WO2017128893A1

WO2017128893A1 - Keyframe animation creation device and method

Info

Publication number: WO2017128893A1
Application number: PCT/CN2016/111479
Authority: WO
Inventors: 马登富
Original assignee: 努比亚技术有限公司
Priority date: 2016-01-27
Filing date: 2016-12-22
Publication date: 2017-08-03
Also published as: CN105578184A; CN105578184B

Abstract

Disclosed are a keyframe animation creation device and method. The keyframe animation creation device comprises: an acquisition module (10) configured to acquire, upon reception of a keyframe animation creation command, a nonlinear temporal interpolator model between two adjacent keyframes; a scaling module (20) configured to perform, according to a preset ratio, scaling on the acquired nonlinear temporal interpolator model to obtain a temporal interpolator model associated with the two adjacent keyframes; and an interpolation module (30) configured to perform, according to the associated temporal interpolator model, interpolation on the two adjacent keyframes to create a keyframe animation.

Description

Key frame animation generating device and method

Technical field

The present application relates to, but is not limited to, the field of animation processing, and in particular, to a device and method for generating key frame animation.

Background technique

With the development of science and technology, various technologies in the field of animation processing are becoming more and more mature. In the field of animation processing, the key frame refers to the frame in which the object changes in motion state, by setting nonlinearity between two key frames. The interpolator combines two keyframes to create a smooth animation.

However, the key frame animation generated now, due to the non-linear interpolator set between the key frames, may cause the generated animation to be skipped smoothly; and the current technology, the key frame animation is generated by Manually write code to splicing property animations between each two keyframes. If there are N keyframes, you need to set N-1 property animations. For example, when the keyframe is 3 frames, this includes two For a non-linear interpolator, you need to use a property animation for each of the two keyframes separately, and then stitch the two property animations to generate a keyframe animation. However, setting the attribute animation between each two key frames is not only complicated, but also the animation generated by the stitched key frames is poorly read, and the generated key frame animation is not smooth enough.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a device and a method for generating a key frame animation, which aims to solve the technical problem that the key frame animation is generated and the generated key frame animation is not smooth enough.

The apparatus for generating a key frame animation provided by the embodiment of the present invention includes:

An acquisition module configured to acquire a nonlinear time interpolator model between two adjacent key frames upon receiving a generation instruction of a key frame animation;

a scaling module configured to scale the obtained nonlinear time interpolator model according to a preset ratio to obtain a time interpolator model associated with two adjacent key frames, wherein the scaling manner includes a nonlinear time interpolator The attribute values are scaled such that the attribute values of the non-linear time interpolator boundary are the same as the attribute values of adjacent non-linear time interpolator boundaries;

An interpolation module configured to interpolate two adjacent key frames according to the associated time interpolator model to generate a key frame animation.

In an exemplary embodiment, the scaling module includes:

Obtaining a submodule configured to acquire a nonlinear time interpolator model between two adjacent key frames;

The acquiring sub-module is further configured to acquire the first preset time point and the second preset time point corresponding to the non-linear time interpolator model in the preset time interval;

a calculation sub-module configured to calculate, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval;

And a scaling submodule configured to scale the nonlinear time interpolator model according to the ratio to obtain a time interpolator model associated with two adjacent key frames.

In an exemplary embodiment, the scaling submodule includes:

An obtaining unit configured to acquire an abscissa and an ordinate of each point in the nonlinear time interpolator model;

a multiplying unit configured to multiply the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

And a processing unit configured to process the scaled nonlinear time interpolator model to obtain a time interpolator model associated with two adjacent key frames.

In an exemplary embodiment, the processing unit is configured to update a starting time point of the non-linear time interpolator model according to the first preset time point, and update the non-according according to the second preset time point The end time point of the linear time interpolator model is obtained as a time interpolator model associated with two adjacent key frames.

In an exemplary embodiment, the key frame animation generating apparatus further includes: a binding module configured to perform a time interpolator model associated with two of the key frames and two adjacent the key frames Bind.

In an exemplary embodiment, the calculation submodule is configured to calculate a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval by:

Calculating a duration between the first preset time point and the second preset time point of the nonlinear time interpolator model; calculating a ratio of the duration to the preset time interval.

In addition, the embodiment of the present invention further provides a method for generating a key frame animation, and the method for generating the key frame animation includes the following steps:

Obtaining a nonlinear time interpolator model between two adjacent key frames when receiving a generation instruction of a key frame animation;

The obtained nonlinear time interpolator model is scaled according to a preset ratio, and a time interpolator model associated with two adjacent key frames is obtained, wherein the scaling manner includes scaling the attribute value of the nonlinear time interpolator So that the attribute value of the boundary of the nonlinear time interpolator is the same as the attribute value of the boundary of the adjacent nonlinear time interpolator;

Two adjacent key frames are interpolated according to the associated time interpolator model to generate a key frame animation.

In an exemplary embodiment, the step of scaling the acquired nonlinear time interpolator model according to a preset ratio to obtain a time interpolator model associated with two adjacent key frames includes:

Obtaining a nonlinear time interpolator model between two adjacent said key frames;

Obtaining a first preset time point and a second preset time point corresponding to the non-linear time interpolator model in a preset time interval;

Calculating, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the time interval;

The nonlinear time interpolator model is scaled according to the ratio to obtain a time interpolator model associated with two adjacent key frames.

In an exemplary embodiment, the step of scaling the non-linear time interpolator model according to the ratio to obtain a time interpolator model associated with two adjacent key frames includes:

Obtaining an abscissa and an ordinate of each point in the nonlinear time interpolator model;

Multiplying the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

The scaled nonlinear time interpolator model is processed to obtain a time interpolator model associated with two adjacent key frames.

In an exemplary embodiment, the step of processing the scaled nonlinear time interpolator model to obtain a time interpolator model associated with two adjacent key frames includes:

Updating a start time point of the nonlinear time interpolator model according to the first preset time point, and updating a termination time point of the nonlinear time interpolator model according to the second preset time point to obtain an adjacent A time interpolator model associated with two of the key frames.

In an exemplary embodiment, after the step of scaling the acquired nonlinear time interpolator model according to a preset ratio to obtain a time interpolator model associated with two adjacent key frames, the key frame The animation generation method also includes:

The time interpolator model associated with the two key frames is bound to two adjacent key frames.

In an exemplary embodiment, the calculating, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval, include:

An embodiment of the present invention further provides a key frame animation generating apparatus, including: a memory and a processor; the memory configured to store a program for generating a key frame animation; the program for generating a key frame animation is processed When the reader reads execution, do the following:

Obtaining a nonlinear time interpolator model between two adjacent key frames when receiving a key frame animation generation instruction; scaling the obtained nonlinear time interpolator model according to a preset ratio to obtain two adjacent a time interpolator model associated with the key frame, wherein the scaling manner comprises scaling an attribute value of the nonlinear time interpolator to interpolate the attribute value of the nonlinear time interpolator boundary with an adjacent nonlinear time The attribute values of the device boundary are the same; according to the associated time The interpolator model interpolates two adjacent keyframes to generate a keyframe animation.

The time-interpolator model of the two adjacent key frames is obtained by scaling the acquired time-interpolator model according to the preset ratio, which may include:

Obtaining a nonlinear time interpolator model between two adjacent key frames; acquiring a first preset time point and a second preset time point corresponding to the non-linear time interpolator model in a preset time interval; Calculating, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the time interval; and the nonlinear time interpolator model according to the The ratio is scaled to obtain a time interpolator model associated with two adjacent key frames.

The method for scaling the nonlinear time interpolator model according to the ratio to obtain a time interpolator model associated with two adjacent key frames may include:

Obtaining the abscissa and the ordinate of each point in the nonlinear time interpolator model; respectively multiplying the abscissa and the ordinate of each point by the ratio, to obtain the scaled nonlinear time interpolator model; The scaled nonlinear time interpolator model is processed to obtain a time interpolator model associated with two adjacent key frames.

The method of processing the scaled non-linear time interpolator model to obtain a time interpolator model associated with two adjacent key frames may include:

The program for generating a key frame animation may also perform the following operations when the processor reads and executes: binding the time interpolator model associated with the two key frames to two adjacent key frames. set.

The calculating the ratio of the duration of the non-linear time interpolator model to the preset time interval according to the first preset time point and the second preset time point may include:

The device for generating a key frame animation may further include: a user input unit configured to receive a generation instruction of the key frame animation.

The embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above-described key frame animation generating apparatus.

The apparatus and method for generating a key frame animation according to an embodiment of the present invention comprise: an acquisition module, a scaling module, and an interpolation module. When receiving a generation instruction of a key frame animation, the acquiring module acquires between two adjacent key frames. a non-linear time interpolator model, the scaling module scales the obtained nonlinear time interpolator model according to a preset ratio, and obtains a time interpolator model associated with two adjacent key frames, wherein the scaling mode To scale the attribute values of the non-linear time interpolator such that the attribute values of the non-linear time interpolator boundary are the same as the attribute values of adjacent non-linear time interpolator boundaries, the interpolation module is based on the association The time interpolator model interpolates two adjacent keyframes to generate keyframe animations, instead of generating keyframe animations, only by manually writing code, using one property animation for each of the two keyframes, and then Splicing two property animations. In this embodiment, the attribute value of the non-linear time interpolator is scaled so that the boundary value of the non-linear time interpolator is the same as the attribute value of the adjacent non-linear time interpolator, and finally the smooth key is generated. Frame animation. The embodiment of the invention does not need to separately use one attribute animation for each two key frames, which not only improves the efficiency and intelligence of key frame animation generation, but also improves the fluency of key frame animation generation.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic structural diagram of hardware of an exemplary mobile terminal embodying an embodiment of the present invention;

2 is a schematic diagram of functional modules of a first embodiment of a key frame animation generating apparatus of the present application;

3 is a schematic diagram of a nonlinear time interpolator model according to an embodiment of the present invention;

4 is a schematic diagram of a nonlinear time interpolator model between two key frames when a conventional key frame animation is generated;

5 is a schematic diagram of a time interpolator model associated with two key frames when the key frame animation of the present application is generated;

6 is a schematic diagram of a refinement function module of the zoom module in FIG. 2;

7 is a schematic diagram of a refinement function module of the scaling submodule in FIG. 6;

8 is a schematic diagram of functional modules of a second embodiment of a key frame animation generating apparatus of the present application;

9 is a schematic flowchart of a first embodiment of a method for generating a key frame animation according to the present application;

10 is a schematic flowchart of an exemplary embodiment of a time interpolator model obtained by scaling the obtained nonlinear time interpolator model according to a preset ratio according to a preset ratio;

FIG. 11 is a schematic flowchart diagram of an exemplary embodiment of a time interpolator model in which the nonlinear time interpolator model is scaled according to the ratio to obtain two adjacent key frames;

FIG. 12 is a schematic flowchart diagram of a second embodiment of a method for generating a key frame animation according to the present application.

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

Embodiments of the invention

It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

A mobile terminal embodying an embodiment of the present invention will now be described with reference to the accompanying drawings. In the following description, the use of suffixes such as "module", "component" or "unit" for indicating an element is merely an explanation for facilitating the present application, and does not have a specific meaning per se. Therefore, "module" and "component" can be used in combination.

The mobile terminal can be implemented in various forms. For example, the terminal described in the embodiments of the present invention may include, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (Personal Digital Assistant), a PAD (Tablet), a PMP (Portable Multimedia Player), a navigation device Mobile terminals of the like and fixed terminals such as digital TVs, desktop computers, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, those skilled in the art will appreciate that configurations in accordance with embodiments of the present application can be applied to fixed type terminals in addition to elements that are specifically for mobile purposes.

FIG. 1 is a schematic diagram showing the hardware structure of an exemplary mobile terminal embodying an embodiment of the present invention.

The mobile terminal 100 may include a wireless communication unit 110, an A/V (Audio/Video) input unit 120, The user input unit 130, the sensing unit 140, the output unit 150, the memory 160, the interface unit 170, the controller 180, the power supply unit 190, and the like. Figure 1 illustrates a mobile terminal having various components, but it should be understood that not all illustrated components are required to be implemented. More or fewer components can be implemented instead. The elements of the mobile terminal will be described in detail below.

Wireless communication unit 110 typically includes one or more components that permit radio communication between mobile terminal 100 and a wireless communication device or network.

The A/V input unit 120 is for receiving an audio or video signal.

The user input unit 130 may generate key input data according to a command input by the user to control various operations of the mobile terminal. The user input unit 130 allows the user to input various types of information, and may include a keyboard, a pot, a touch pad (eg, a touch sensitive component that detects changes in resistance, pressure, capacitance, etc. due to contact), a scroll wheel , rocker, etc. In particular, when the touch panel is superimposed on the display unit 151 in the form of a layer, a touch screen can be formed.

The sensing unit 140 detects the current state of the mobile terminal 100 (eg, the open or closed state of the mobile terminal 100), the location of the mobile terminal 100, the presence or absence of contact (ie, touch input) by the user with the mobile terminal 100, and the mobile terminal. The orientation of 100, the acceleration of the mobile terminal 100 or the speed of movement and direction, and the like, and generates a command or signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is implemented as a slide type mobile phone, the sensing unit 140 can sense whether the slide type phone is turned on or off. In addition, the sensing unit 140 can detect whether the power supply unit 190 provides power or whether the interface unit 170 is coupled to an external device.

The interface unit 170 serves as an interface through which at least one external device can connect with the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, and an audio input/output. (I/O) port, video I/O port, headphone port, and more. The identification module may be stored to verify various information used by the user using the mobile terminal 100 and may include a User Identification Module (UIM), a Customer Identification Module (SIM), a Universal Customer Identity Module (USIM), and the like. In addition, the device having the identification module (hereinafter referred to as "identification device") may take the form of a smart card, and thus the identification device may be connected to the mobile terminal 100 via a port or other connection device. The interface unit 170 can be configured to receive input (eg, data information, power, etc.) from an external device and transmit the received input to one or more components within the mobile terminal 100 or can be used to move Data is transferred between the mobile terminal and an external device.

In addition, when the mobile terminal 100 is connected to the external base, the interface unit 170 may function as a path through which power is supplied from the base to the mobile terminal 100 or may be used as a transmission of various command signals allowing input from the base to the mobile terminal 100 The path to the terminal. Various command signals or power input from the base can be used as signals for identifying whether the mobile terminal is accurately mounted on the base. Output unit 150 is configured to provide an output signal (eg, an audio signal, a video signal, an alarm signal, a vibration signal, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151.

The display unit 151 can display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 can display a user interface (UI) or a graphical user interface (GUI) related to a call or other communication (eg, text messaging, multimedia file download, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or image and related functions, and the like.

Meanwhile, when the display unit 151 and the touch panel are superposed on each other in the form of a layer to form a touch screen, the display unit 151 can function as an input device and an output device. The display unit 151 may include at least one of a liquid crystal display (LCD), a thin film transistor LCD (TFT-LCD), an organic light emitting diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as a transparent display, and a typical transparent display may be, for example, a TOLED (Transparent Organic Light Emitting Diode) display or the like. According to a particular desired embodiment, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown) . The touch screen can be used to detect touch input pressure as well as touch input position and touch input area.

The memory 160 may store a software program or the like that performs processing and control operations performed by the controller 180, or may temporarily store data (for example, a phone book, a message, a still image, a video, and the like) that has been output or is to be output. Moreover, the memory 160 can store data regarding vibrations and audio signals of various manners that are output when a touch is applied to the touch screen.

The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (eg, SD or DX memory, etc.), random access storage. (RAM), static random access memory (SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disk, optical disk, etc. . Moreover, the mobile terminal 100 can cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.

The controller 180 typically controls the overall operation of the mobile terminal. For example, the controller 180 performs the control and processing associated with voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for reproducing (or playing back) multimedia data, which may be constructed within the controller 180 or may be configured to be separate from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.

The power supply unit 190 receives external power or internal power under the control of the controller 180 and provides appropriate power required to operate the various components and components.

The various embodiments described herein can be implemented in a computer readable medium using, for example, computer software, hardware, or any combination thereof. For hardware implementations, the embodiments described herein may be through the use of application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays ( An FPGA, a processor, a controller, a microcontroller, a microprocessor, at least one of the electronic units designed to perform the functions described herein, in some cases, such an embodiment may be at the controller 180 Implemented in the middle. For software implementations, implementations such as procedures or functions may be implemented with separate software modules that permit the execution of at least one function or operation. The software code can be implemented by a software application (or program) written in any suitable programming language, which can be stored in memory 160 and executed by controller 180.

So far, the mobile terminal has been described in terms of its function. Hereinafter, for the sake of brevity, a slide type mobile terminal among various types of mobile terminals such as a folding type, a bar type, a swing type, a slide type mobile terminal, and the like will be described as an example. Therefore, the embodiment of the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.

Based on the above-described hardware structure of the mobile terminal, an embodiment of the apparatus for generating a key frame animation of the present application is proposed.

Referring to FIG. 2, FIG. 2 is a function of a first embodiment of a key frame animation generating apparatus of the present application. Module schematic.

It should be emphasized that, for those skilled in the art, the functional block diagram shown in FIG. 2 is merely an exemplary diagram of an embodiment, and those skilled in the art surround the functional modules of the key frame animation generating apparatus shown in FIG. 2, The new functional modules can be easily supplemented; the name of each functional module is a custom name, and is only used to assist in understanding each program function block of the key frame animation generating device, and is not used to limit the technical solution of the present application. At the heart of the technical solution is the function to be achieved by each functional module of a custom name.

The present embodiment provides a device for generating a key frame animation, and the device for generating the key frame animation includes:

The obtaining module 10 is configured to acquire a nonlinear time interpolator model between two adjacent key frames when receiving a generation instruction of the key frame animation;

In this embodiment, the acquiring module 10 acquires a nonlinear time interpolator model between two adjacent key frames, and then analyzes the nonlinear time interpolator model.

It can be understood that the time interpolator is used to specify the change rule of an attribute of the animation over time, and the time interval is normalized, and the start value of the time interpolator model can be set to 0, and the end value is set to 1. . Therefore, when acquiring the nonlinear time interpolator model, first look at the source code of the nonlinear time interpolator model between two adjacent key frames. Assuming that there are 3 keyframes now, two nonlinear time interpolator models are needed. The two nonlinear time interpolator models refer to Figure 3, which are the two curves in Figure 3, and the three keyframes at this time, There are three key frames k0, k1 and k2 respectively. For three key frames, reference may be made to FIG. 4. The time point corresponding to the k0 key frame is the origin in the abscissa, and the time point corresponding to the k2 key frame is 1 in the abscissa. A nonlinear time interpolator model Ti1 is set between k0 and k1, and a nonlinear time interpolator model Ti2 is set again for the k1 and k2 time segments. At this time, the system will think that the time starting point of Ti1 and Ti2 is k0 and the time ending point is k2, which will cause the system to use nonlinearity when doing animation in the k0 to k1 time period when doing key frame animation. The k0 to k1 time curve of the time interpolator Ti1, and the k1 to k2 time curve of the nonlinear time interpolator Ti2 when animating in the k1 to k2 time period, that is, the properties of two nonlinear time interpolators The values at the k1 position are not the same, that is, the curves corresponding to the two non-linear time interpolators are discontinuous at k1, which causes an animation jam and frame skipping.

The scaling module 20 is configured to acquire the nonlinear time interpolator model according to a preset ratio pair Performing scaling to obtain a time interpolator model associated with two adjacent key frames, wherein the scaling manner is to scale the attribute values of the nonlinear time interpolator so that the attribute values of the nonlinear time interpolator boundary are The attribute values of adjacent nonlinear time interpolator boundaries are the same.

In this embodiment, the acquiring module 10 first acquires a nonlinear time interpolator model between any two adjacent key frames, and then the scaling module 20 obtains the nonlinear time interpolator according to a preset ratio pair. The model is scaled to obtain a time interpolator model associated with two adjacent key frames, and the scaling method is to scale the attribute values of the nonlinear time interpolator so that the attribute values of the nonlinear time interpolator boundary are The attribute values of adjacent nonlinear time interpolator boundaries are the same. That is, the attribute values of the nonlinear time interpolator in FIG. 4 are adjusted to match the attribute values of the nonlinear time interpolator boundary with the attribute values of other adjacent nonlinear time interpolator boundaries, nonlinear time The result of the attribute value of the interpolator boundary being consistent with the attribute values of other adjacent nonlinear time interpolator boundaries can be referred to FIG.

For a better understanding of the embodiment, referring to FIG. 6, the scaling module 20 includes:

The obtaining sub-module 21 is configured to acquire a nonlinear time interpolator model between two adjacent key frames;

In this embodiment, three key frames are exemplified, and it is known that two non-linear time interpolators are included. Referring also to FIG. 3, if two adjacent key frames are k0 and k1, at this time, k0 key frames. The corresponding time point is a time point where the abscissa is 0. Then, the non-linear interpolator model between the key frames k0 and k1 is a curve close to the ordinate.

The acquiring sub-module 21 is further configured to acquire the first preset time point and the second preset time point corresponding to the non-linear time interpolator model in the preset time interval;

After the obtaining sub-module 21 acquires the nonlinear time interpolator model between two adjacent key frames, the acquiring sub-module 21 acquires the corresponding non-linear time interpolator model in a preset time interval. The first preset time point and the second preset time point, and similarly referring to FIG. 3, it can be seen that the non-linear time interpolator model has a corresponding first preset time point of 0 in the preset time interval, and the second preset The time point is k1.

The calculation sub-module 22 is configured to calculate, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval;

After the acquiring sub-module 21 acquires the first preset time point and the second preset time point, the calculating sub-module 22 calculates a first preset time point of the nonlinear time interpolator model. And a duration between the second preset time point, and then calculating a ratio of the duration to the preset time interval. If the k1 is 0.3 at this time, it is known that the nonlinear time interpolator model corresponds to The duration is 0.3, and the ratio of the duration to the preset time interval is (k1-0)/1=k1, and the calculation result is 0.3; similarly, in the two adjacent key frames When the nonlinear time interpolator model is the curve near the abscissa in FIG. 3, at this time, the starting time point of the nonlinear time interpolator model is k1, and the end time point is 1, then the nonlinearity The time interpolator model has a duration of 1-k1, and the ratio of the duration to the preset time interval is (1-k1)/1=1-k1. If k1 is 0.3, the calculation result is 0.7.

The scaling sub-module 23 is configured to scale the nonlinear time interpolator model according to the ratio to obtain a time interpolator model associated with two adjacent key frames.

In this embodiment, after the ratio is obtained, the scaling sub-module 23 may scale the nonlinear time interpolator model according to the ratio to obtain the time associated with two adjacent key frames. Interpolator model.

Referring to FIG. 7, the scaling submodule 23 includes:

The obtaining unit 231 is configured to acquire an abscissa and an ordinate of each point in the nonlinear time interpolator model;

The multiplying unit 232 is configured to multiply the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

The processing unit 233 is configured to process the scaled nonlinear time interpolator model to obtain a time interpolator model associated with two adjacent key frames.

In this embodiment, the acquiring unit 231 first acquires the abscissa and the ordinate of each point in the nonlinear time interpolator model, and then the multiplying unit 232 respectively sets the abscissa and the vertical of each point. The coordinate is multiplied by the ratio to obtain the scaled nonlinear time interpolator model. Finally, the processing unit 233 processes the scaled nonlinear time interpolator model to obtain two adjacent keys. Frame-associated time interpolator model. Further, the processing unit 233 is configured to update a start time point of the nonlinear time interpolator model according to the first preset time point, and update the nonlinear time according to the second preset time point The end time point of the interpolator model, A time interpolator model associated with two adjacent said key frames is obtained.

In this embodiment, after compressing the nonlinear time interpolator model, a compressed time interpolator model is obtained, and at this time, the processing unit 233 is updated according to the first preset time point. a start time point of the nonlinear time interpolator model, and updating a termination time point of the nonlinear time interpolator model according to the second preset time point, to obtain an association between two adjacent key frames Time interpolator model.

Among them, the entire calculation process can be realized by inheriting the TimeInterpolator class of the android system, adding a constructor, and passing in related parameters. The constructor is configured to initialize an object when the object is created, and the incoming related parameter includes a first preset time point and a second preset time point corresponding to the non-linear time interpolator model in the preset time interval. The first preset time point is the start time point k1, the second preset time point is the end time point k2, and the re-introduction time interpolator mInterpolator rewrites the getInterpolation(float input) interface to implement a new The interpolator class KFTimeInterpolator, in the interpolation generation algorithm, is equivalent to improving the original interpolator model, and the input interpolator model scales the input and output according to the ratio, as follows:

If(input<=k1)

Return mInterpolator.getInterpolation(0.0f)*(k2–k1)+k1

Elseif(input>=k2)

Return mInterpolator.getInterpolation(1.0f)*(k2–k1)+k1

Else

Return mInterpolator.getInterpolation((input–k1)/(k2–k1))*(k2–k1)+k1

That is, the object KFTi of a new time interpolator KFTimeInterpolator is generated by the start time point k1 of the incoming time interpolator, the end time point k2, and the TimeInterpolator model Ti, and finally the key frames are interpolated according to the newly generated time interpolator model. To generate keyframe animations.

The interpolation module 30 is configured to interpolate two adjacent key frames according to the associated time interpolator model to generate a key frame animation.

In this embodiment, after obtaining the time interpolator model associated with two adjacent key frames, the interpolation module 30 interpolates two adjacent key frames according to the associated time interpolator model. Generate keyframe animations.

The apparatus for generating a key frame animation according to an embodiment of the present invention includes: an obtaining module, a scaling module, and an interpolation module. When receiving a generation instruction of a key frame animation, the acquiring module acquires a nonlinear time between two adjacent key frames. An interpolator model, the scaling module scales the obtained nonlinear time interpolator model according to a preset ratio, and obtains a time interpolator model associated with two adjacent key frames, wherein the scaling mode is to interpolate the nonlinear time The attribute value of the device is scaled such that the attribute value of the nonlinear time interpolator boundary is the same as the attribute value of the adjacent nonlinear time interpolator boundary, and the interpolation module according to the associated time interpolator model pairs adjacent two The keyframes are interpolated to generate keyframe animations, rather than when generating keyframe animations, only by manually writing code, using one property animation for each of the two keyframes, and then stitching the two property animations. In this embodiment, the attribute value of the non-linear time interpolator is scaled so that the boundary value of the non-linear time interpolator is the same as the attribute value of the adjacent non-linear time interpolator, and finally the smooth key is generated. In the frame animation, the embodiment of the present invention does not need to separately use one attribute animation for each two key frames, which not only improves the efficiency and intelligence of key frame animation generation, but also improves the fluency of key frame animation generation.

Further, in order to improve the flexibility of key frame animation generation, referring to FIG. 8, a second embodiment of the key frame animation generating apparatus of the present application is proposed based on the first embodiment. In this embodiment, the key frame animation is The generating device further includes:

The binding module 40 is configured to bind the time interpolator model associated with the two key frames to two adjacent key frames.

In this embodiment, after obtaining the time interpolator model associated with two adjacent key frames, the binding module 40 compares the time interpolator model associated with the two key frames with two adjacent key frames. The binding is performed, and finally, according to the binding relationship, the time interpolator model can perform interpolation on the bound key frames to generate an animation.

In this embodiment, for better understanding, an example application scenario is as follows:

In the key frame is 3 frames, and the time interpolator model between each two key frames is a nonlinear time interpolator model. In this case, referring to FIG. 3, the three key frames are k0 (starting frame), K1 (middle a frame), an end frame (k2), a time interpolator (kft1, a curve near the ordinate) between k0 and k1, and a time interpolator (kft2, a curve near the abscissa) between k1 and k2, then After scaling the above-mentioned nonlinear time interpolator according to the ratio, the kft1 and kft2 curves appear as the same value at the time of the key frame k1, and the time interpolator curve of the entire animation is as shown in FIG. 5, the whole animation process. There will be no jumps in the animation, and the animation will be smooth.

For the same reason, when the key frame includes 4 frames or more, the method is the same as the key frame including 3 frames, and details are not described herein.

The application further provides a method for generating a key frame animation.

Referring to FIG. 9, FIG. 9 is a schematic flowchart diagram of a first embodiment of a method for generating a key frame animation according to the present application.

This embodiment provides a method for generating a key frame animation, and the method for generating the key frame animation includes the following steps:

Step S10, when receiving the generation instruction of the key frame animation, acquiring a nonlinear time interpolator model between two adjacent key frames;

In this embodiment, a nonlinear time interpolator model between two adjacent key frames is first acquired, and then the nonlinear time interpolator model is analyzed.

It can be understood that the time interpolator is used to specify the change rule of an attribute of the animation over time, and the time interval is normalized, and the start value of the time interpolator model can be set to 0, and the end value is set to 1. . Therefore, when acquiring the nonlinear time interpolator model, first look at the source code of the nonlinear time interpolator model between two adjacent key frames. Assuming that there are 3 keyframes now, two nonlinear time interpolator models are needed. The two nonlinear time interpolator models refer to Figure 3, which are the two curves in Figure 3, and the three keyframes at this time, There are three key frames k0, k1 and k2 respectively. For three key frames, refer to Figure 4. The time point corresponding to the k0 key frame is the origin in the abscissa, and the time point corresponding to the k2 key frame is 1 in the abscissa. A nonlinear time interpolator model Ti1 is set between k0 and k1, and a nonlinear time interpolator model Ti2 is set again for the k1 and k2 time segments. At this time, the system will think that the time starting point of Ti1 and Ti2 is k0 and the time ending point is k2, which will cause the system to use nonlinearity when doing animation in the k0 to k1 time period when doing key frame animation. The time k1 to k1 time curve of the time interpolator Ti1, and the k1 to k2 time curve of the nonlinear time interpolator Ti2 when animating in the k1 to k2 time period, that is, two non- The value of the linear time interpolator's attribute value is different at the k1 position, that is, the curve corresponding to the two non-linear time interpolators is discontinuous at k1, which causes an animation jam and frame skipping phenomenon.

Step S20: The obtained nonlinear time interpolator model is scaled according to a preset ratio, and a time interpolator model associated with two adjacent key frames is obtained, wherein the scaling mode includes attributes of the nonlinear time interpolator. The values are scaled such that the attribute values of the non-linear time interpolator boundary are the same as the attribute values of adjacent non-linear time interpolator boundaries;

In this embodiment, the nonlinear time interpolator model between any two adjacent key frames is first obtained, and then the obtained nonlinear time interpolator model is scaled according to a preset ratio to obtain two adjacent stations. The time interpolator model associated with the key frame is scaled by scaling the attribute values of the nonlinear time interpolator such that the attribute values of the boundary of the nonlinear time interpolator are adjacent to the boundary of the adjacent nonlinear time interpolator The attribute values are the same. That is to say, the attribute value of the nonlinear time interpolator in FIG. 4 is adjusted so that the attribute value of the nonlinear time interpolator boundary is consistent with the attribute value of other adjacent nonlinear time interpolator boundaries, and the nonlinear time interpolation See Figure 5 for the results of the attribute values of the boundary of the device being consistent with the values of the attributes of other adjacent nonlinear time interpolator boundaries.

For a better understanding of the embodiment, referring to FIG. 10, the step S20 includes:

Step S21, acquiring a nonlinear time interpolator model between two adjacent key frames;

Step S22, acquiring a first preset time point and a second preset time point corresponding to the non-linear time interpolator model in the preset time interval;

After acquiring the nonlinear time interpolator model between the two adjacent key frames, acquiring the first preset time point and the second preset time in the preset time interval of the nonlinear time interpolator model Point, similarly referring to FIG. 3, it can be seen that the non-linear time interpolator model has a corresponding first preset time point of 0 in the preset time interval, and the second preset time point is k1.

Step S23, calculating, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval;

After obtaining the first preset time point and the second preset time point, calculating a duration between the first preset time point and the second preset time point of the nonlinear time interpolator model, Then calculating a ratio of the duration to the preset time interval; if the k1 is 0.3 at this time, it can be known that the duration of the nonlinear time interpolator model corresponds to 0.3, and the duration is the pre- Let the ratio of the time interval be (k1-0)/1=k1, and the calculation result is 0.3; similarly, the nonlinear time interpolator model between two adjacent key frames is Figure 3. In the curve near the abscissa, at this time, the starting time point of the nonlinear time interpolator model is k1, and the ending time point is 1, then the duration of the nonlinear time interpolator model is 1-k1, Then, the ratio of the duration to the time interval is calculated as (1-k1)/1=1-k1, and if k1 is 0.3, the calculation result is 0.7.

Step S24: The nonlinear time interpolator model is scaled according to the ratio, and a time interpolator model associated with two adjacent key frames is obtained.

In this embodiment, after the ratio is obtained, the nonlinear time interpolator model may be scaled according to the ratio to obtain a time interpolator model associated with two adjacent key frames.

Referring to FIG. 11, the step S24 includes:

Step S241, acquiring an abscissa and an ordinate of each point in the nonlinear time interpolator model;

Step S242, multiplying the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

Step S243, processing the scaled nonlinear time interpolator model to obtain a time interpolator model associated with two adjacent key frames.

In this embodiment, the abscissa and the ordinate of each point in the nonlinear time interpolator model are first acquired, and then the abscissa and the ordinate of each point are respectively multiplied by the ratio to obtain a scaled position. The nonlinear time interpolator model is described. Finally, the scaled nonlinear time interpolator model is processed to obtain a time interpolator model associated with two adjacent key frames.

The step S243 may include:

In this embodiment, after compressing the nonlinear time interpolator model, a compressed time interpolator model is obtained, and at this time, the nonlinear time is updated according to the first preset time point. At the start time point of the interpolator model, the end time point of the nonlinear time interpolator model is updated according to the second preset time point, and a time interpolator model associated with two adjacent key frames is obtained.

Wherein, the entire calculation process can be implemented by inheriting the TimeInterpolator class of the android system, adding a constructor, and passing in related parameters, wherein the constructor is used to initialize the object when the object is created, and the incoming related parameters include the The non-linear time interpolator model corresponds to a first preset time point and a second preset time point in a preset time interval, where the first preset time point is a start time point k1 and a second preset time point is End time point k2, and re-introduction time interpolator mInterpolator, rewrite the getInterpolation(float input) interface to implement a new interpolator class KFTimeInterpolator, which is equivalent to the original interpolator model in the interpolation generation algorithm. The incoming interpolator model is scaled to the input and output according to the ratio, as follows:

If(input<=k1)

Return mInterpolator.getInterpolation(0.0f)*(k2–k1)+k1

Elseif(input>=k2)

Return mInterpolator.getInterpolation(1.0f)*(k2–k1)+k1

Else

Return mInterpolator.getInterpolation((input–k1)/(k2–k1))*(k2–k1)+k1

Step S30, interpolating two adjacent key frames according to the associated time interpolator model to generate a key frame animation.

In this embodiment, after obtaining the time interpolator model associated with two adjacent key frames, according to The associated time interpolator model interpolates two adjacent key frames to generate a key frame animation.

The method for generating a key frame animation according to an embodiment of the present invention first acquires a nonlinear time interpolator model between two adjacent key frames when receiving a key frame animation generation instruction, and then acquires the preset time ratio pair according to a preset ratio. The nonlinear time interpolator model is scaled to obtain a time interpolator model associated with two adjacent key frames, wherein the scaling manner is to scale the attribute values of the nonlinear time interpolator to make the nonlinearity The attribute value of the time interpolator boundary is the same as the attribute value of the adjacent nonlinear time interpolator boundary, and finally the adjacent two key frames are interpolated according to the associated time interpolator model to generate a key frame animation, and Instead of generating keyframe animations, you can only manually write code, use one property animation for each of the two keyframes, and then stitch the two property animations. In this implementation, the attribute value of the nonlinear time interpolator is scaled so that the boundary value of the nonlinear time interpolator is the same as the attribute value of the adjacent nonlinear time interpolator, and finally a smooth key frame is generated. The animation does not need to separately use one attribute animation for each two key frames, which not only improves the efficiency and intelligence of key frame animation generation, but also improves the fluency of key frame animation generation.

Further, in order to improve the flexibility of the key frame animation generation, referring to FIG. 12, a second embodiment of the method for generating a key frame animation of the present application is proposed based on the first embodiment. In this embodiment, after the step S20, The method for generating the key frame animation further includes:

Step S40, binding the time interpolator model associated with the two key frames to two adjacent key frames.

In this embodiment, after obtaining the time interpolator model associated with two adjacent key frames, the time interpolator model associated with the two key frames is bound to two adjacent key frames, and finally The bound relationship, the time interpolator model can be used to interpolate the bound keyframes to generate animations.

In the key frame is 3 frames, and the time interpolator model between each two key frames is a nonlinear time interpolator model. In this case, referring to FIG. 3, the three key frames are k0 (starting frame), K1 (one frame in the middle), end frame (k2), time interpolator between k0 and k1 (kft1, curve near ordinate), time interpolator between k1 and k2 (kft2, curve near the abscissa) ), that After scaling the above-mentioned nonlinear time interpolator according to the ratio, the kft1 and kft2 curves appear as the same value at the time of the key frame k1, and the time interpolator curve of the entire animation is as shown in FIG. 5, the whole animation. There will be no jumps in the process and the animation will be smooth.

In addition, an embodiment of the present invention further provides a key frame animation generating apparatus, including: a memory and a processor; the memory configured to store a program for generating a key frame animation; the program for generating a key frame animation is When executed by the processor, do the following:

Obtaining a nonlinear time interpolator model between two adjacent key frames when receiving a key frame animation generation instruction; scaling the obtained nonlinear time interpolator model according to a preset ratio to obtain two adjacent a time interpolator model associated with the key frame, wherein the scaling manner comprises scaling an attribute value of the nonlinear time interpolator to interpolate the attribute value of the nonlinear time interpolator boundary with an adjacent nonlinear time The attribute values of the device boundaries are the same; two adjacent key frames are interpolated according to the associated time interpolator model to generate a key frame animation.

Calculating a duration between the first preset time point and the second preset time point of the nonlinear time interpolator model;

Calculating a ratio of the duration to the preset time interval.

It should be noted that the memory of this embodiment may be the memory 160 of FIG. 1, the processor may be the controller 180 of FIG. 1, and the user input unit may be the user input unit 130 of FIG.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above-described key frame animation generation method.

It is to be understood that the term "comprises", "comprising", or any other variants thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or system that comprises a plurality of elements includes not only those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, item, or system. An element defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in a process, method, article, or system that includes the element, without further limitation.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical units; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components work together. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .

The above is only an exemplary embodiment of the present application, and thus does not limit the scope of patents of the present application, and the equivalent structure or equivalent process transformations made by the contents of the specification and the drawings of the present application, or directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of this application.

Industrial applicability

The embodiment of the present invention provides a device and a method for generating a key frame animation, which does not need to separately use one attribute animation for each two key frames, which not only improves the efficiency and intelligence of key frame animation generation, but also improves key frame animation generation. The fluency.

Claims

A key frame animation generating device includes:

An acquisition module configured to acquire a nonlinear time interpolator model between two adjacent key frames upon receiving a generation instruction of a key frame animation;

a scaling module configured to scale the obtained nonlinear time interpolator model according to a preset ratio to obtain a time interpolator model associated with two adjacent key frames, wherein the scaling manner includes a nonlinear time interpolator The attribute values are scaled such that the attribute values of the non-linear time interpolator boundary are the same as the attribute values of adjacent non-linear time interpolator boundaries;

An interpolation module configured to interpolate two adjacent key frames according to the associated time interpolator model to generate a key frame animation.
The apparatus for generating a key frame animation according to claim 1, wherein the scaling module comprises:

Obtaining a submodule configured to acquire a nonlinear time interpolator model between two adjacent key frames;

The acquiring sub-module is further configured to acquire the first preset time point and the second preset time point corresponding to the non-linear time interpolator model in the preset time interval;

a calculation sub-module configured to calculate, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval;

And a scaling submodule configured to scale the nonlinear time interpolator model according to the ratio to obtain a time interpolator model associated with two adjacent key frames.
The apparatus for generating a key frame animation according to claim 2, wherein the scaling sub-module comprises:

An obtaining unit configured to acquire an abscissa and an ordinate of each point in the nonlinear time interpolator model;

a multiplying unit configured to multiply the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

a processing unit configured to process the scaled nonlinear time interpolator model A time interpolator model associated with two adjacent said key frames.
The key frame animation generating apparatus according to claim 3, wherein the processing unit is configured to update a start time point of the nonlinear time interpolator model according to the first preset time point, according to the first The second time point is updated to terminate the time point of the nonlinear time interpolator model, and a time interpolator model associated with two adjacent key frames is obtained.
The device for generating a key frame animation according to any one of claims 1 to 4, wherein the device for generating a key frame animation further comprises:

And a binding module configured to bind the time interpolator model associated with the two key frames to two adjacent key frames.
The key frame animation generating apparatus according to claim 2, wherein the calculating submodule is configured to calculate a ratio of a duration corresponding to the nonlinear time interpolator model to the preset time interval by:

Calculating a duration between the first preset time point and the second preset time point of the nonlinear time interpolator model;

Calculating a ratio of the duration to the preset time interval.
A method for generating a key frame animation includes the following steps:

Obtaining a nonlinear time interpolator model between two adjacent key frames when receiving a generation instruction of a key frame animation;

The obtained nonlinear time interpolator model is scaled according to a preset ratio, and a time interpolator model associated with two adjacent key frames is obtained, wherein the scaling manner includes scaling the attribute value of the nonlinear time interpolator So that the attribute value of the boundary of the nonlinear time interpolator is the same as the attribute value of the boundary of the adjacent nonlinear time interpolator;

Two adjacent key frames are interpolated according to the associated time interpolator model to generate a key frame animation.
The method for generating a key frame animation according to claim 7, wherein the nonlinear time interpolator model acquired according to a preset ratio is scaled to obtain a time interpolator associated with two adjacent key frames. The steps of the model include:

Obtaining a nonlinear time interpolator model between two adjacent said key frames;

Obtaining a first preset time point and a second preset time point corresponding to the non-linear time interpolator model in a preset time interval;

Calculating, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the time interval;

The nonlinear time interpolator model is scaled according to the ratio to obtain a time interpolator model associated with two adjacent key frames.
The method for generating a key frame animation according to claim 8, wherein said scaling the nonlinear time interpolator model according to said ratio to obtain a time interpolator model associated with two adjacent said key frames The steps include:

Obtaining an abscissa and an ordinate of each point in the nonlinear time interpolator model;

Multiplying the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

The scaled nonlinear time interpolator model is processed to obtain a time interpolator model associated with two adjacent key frames.
The method for generating a key frame animation according to claim 9, wherein the step of processing the scaled nonlinear time interpolator model to obtain a time interpolator model associated with two adjacent key frames include:

Updating a start time point of the nonlinear time interpolator model according to the first preset time point, and updating a termination time point of the nonlinear time interpolator model according to the second preset time point to obtain an adjacent A time interpolator model associated with two of the key frames.
The method for generating a key frame animation according to any one of claims 7 to 10, wherein the nonlinear time interpolator model acquired according to a preset ratio is scaled to obtain two adjacent key frames. After the step of the associated time interpolator model, the method for generating the key frame animation further includes:

The time interpolator model associated with the two key frames is bound to two adjacent key frames.
The method for generating a key frame animation according to claim 8, wherein the calculating the nonlinear time interpolator model pair according to the first preset time point and the second preset time point The ratio of the length of time to the preset time interval, including:

Calculating a duration between the first preset time point and the second preset time point of the nonlinear time interpolator model;

Calculating a ratio of the duration to the preset time interval.
A key frame animation generating device includes: a memory and a processor;

The memory is configured to store a program for generating a keyframe animation; the program for generating a keyframe animation, when executed by the processor, performs the following operations:

Obtaining a nonlinear time interpolator model between two adjacent key frames when receiving a generation instruction of a key frame animation;

The obtained nonlinear time interpolator model is scaled according to a preset ratio, and a time interpolator model associated with two adjacent key frames is obtained, wherein the scaling manner includes scaling the attribute value of the nonlinear time interpolator So that the attribute value of the boundary of the nonlinear time interpolator is the same as the attribute value of the boundary of the adjacent nonlinear time interpolator;

Two adjacent key frames are interpolated according to the associated time interpolator model to generate a key frame animation.
The key frame animation generating apparatus according to claim 13, wherein the nonlinear time interpolator model acquired according to a preset ratio is scaled to obtain a time interpolator associated with two adjacent key frames. Models, including:

Obtaining a nonlinear time interpolator model between two adjacent said key frames;

Obtaining a first preset time point and a second preset time point corresponding to the non-linear time interpolator model in a preset time interval;

Calculating, according to the first preset time point and the second preset time point, a ratio of a duration corresponding to the nonlinear time interpolator model to the time interval;

The nonlinear time interpolator model is scaled according to the ratio to obtain a time interpolator model associated with two adjacent key frames.
The key frame animation generating apparatus according to claim 14, wherein said scaling said nonlinear time interpolator model according to said ratio to obtain two adjacent said key frames The time interpolator model, including:

Obtaining an abscissa and an ordinate of each point in the nonlinear time interpolator model;

Multiplying the abscissa and the ordinate of each point by the ratio, respectively, to obtain the scaled nonlinear time interpolator model;

The scaled nonlinear time interpolator model is processed to obtain a time interpolator model associated with two adjacent key frames.
The key frame animation generating apparatus according to claim 15, wherein said scaling said nonlinear time interpolator model is processed to obtain a time interpolator model associated with two adjacent said key frames, including :

Updating a start time point of the nonlinear time interpolator model according to the first preset time point, and updating a termination time point of the nonlinear time interpolator model according to the second preset time point to obtain an adjacent A time interpolator model associated with two of the key frames.
The key frame animation generating apparatus according to any one of claims 13 to 16, wherein the program for generating a key frame animation further performs the following operations when executed by the processor:

The time interpolator model associated with the two key frames is bound to two adjacent key frames.
The key frame animation generating apparatus according to claim 14, wherein the calculating the duration corresponding to the nonlinear time interpolator model according to the first preset time point and the second preset time point The ratio of the preset time interval includes:

Calculating a duration between the first preset time point and the second preset time point of the nonlinear time interpolator model;

Calculating a ratio of the duration to the preset time interval.
The key frame animation generating apparatus according to claim 13, wherein the key frame animation generating means further comprises: a user input unit configured to receive a key frame animation generating instruction.
A computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the key frame animation generation method of any one of claims 7 to 12.