WO2024008142A1 - 一种动画渲染方法、装置、设备及存储介质 - Google Patents

一种动画渲染方法、装置、设备及存储介质 Download PDF

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Publication number
WO2024008142A1
WO2024008142A1 PCT/CN2023/106047 CN2023106047W WO2024008142A1 WO 2024008142 A1 WO2024008142 A1 WO 2024008142A1 CN 2023106047 W CN2023106047 W CN 2023106047W WO 2024008142 A1 WO2024008142 A1 WO 2024008142A1
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WIPO (PCT)
Prior art keywords
image frame
rendered
target
triangulation
adjacent previous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2023/106047
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English (en)
French (fr)
Inventor
李洋
姚晓鹏
田百登
李博
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Beijing Zitiao Network Technology Co Ltd
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Beijing Zitiao Network Technology Co Ltd
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Priority to US18/861,509 priority Critical patent/US20250292476A1/en
Publication of WO2024008142A1 publication Critical patent/WO2024008142A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T13/00—Animation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T13/00—Animation
    • G06T13/20—Three-dimensional [3D] animation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T13/00—Animation
    • G06T13/80—Two-dimensional [2D] animation, e.g. using sprites
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
    • G06T7/248—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments involving reference images or patches
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2213/00—Indexing scheme for animation
    • G06T2213/12—Rule based animation

Definitions

  • the present disclosure relates to the field of data processing, and in particular to an animation rendering method, device, equipment and storage medium.
  • Lottie is a cross-platform animation solution that can parse AE (Adobe After Effects, dynamic graphics software) and export to generate JSON files through the Bodymovin plug-in, and realize animation effects on IOS, Android, Web, and React Native.
  • embodiments of the present disclosure provide an animation rendering method.
  • an animation rendering method which method includes:
  • the graphics drawing mode of the target graphic object is the fill drawing mode
  • the triangulation state of the target graphics object if it is determined that the image frame to be rendered has not changed compared with the adjacent previous image frame, then based on the relationship between the adjacent previous image frame and the target The triangulation data of the graphics object corresponding to the graphics object, for all the images on the image frame to be rendered.
  • the target graphics object is rendered.
  • determining whether the image frame to be rendered has changed compared with the previous adjacent image frame for the triangulation state of the target graphics object including:
  • the left and right states of the ear apex of the target graphic object determine whether the image frame to be rendered has changed compared with the adjacent previous image frame, wherein the left and right states of the ear apex indicate the left and right states of the ear apex. Is the successor vector to the left or right of the predecessor vector of the ear tip vertex.
  • determining whether the image frame to be rendered has changed compared with the previous adjacent image frame for the left and right status of the ear tip vertex of the target graphic object includes:
  • determining whether the image frame to be rendered has changed compared with the previous adjacent image frame for the number of vertices of the target graphics object includes:
  • determining whether the image frame to be rendered has changed compared with the adjacent previous image frame for the left and right status of the ear tip vertex of the target graphic object includes:
  • the method further includes:
  • the graphics drawing mode of the target graphic object is the stroke drawing mode
  • the target graphics object on the image frame to be rendered is rendered based on the triangulation data of the target graphics object.
  • the target graphic object is triangulated based on the triangulation data of the adjacent previous image frame of the image frame to be rendered, and the corresponding target graphic object is obtained.
  • triangulation data including:
  • the triangulation data corresponding to the repeated drawing data and the new triangulation data are determined as the triangulation data corresponding to the target graphics object on the image frame to be rendered.
  • an animation rendering device which includes:
  • the first determination module is used to determine the target graphics object on the image frame to be rendered in the target graphics animation and the graphics drawing method of the target graphics object;
  • the second determination module is used to determine that when the graphics drawing mode of the target graphic object is the fill drawing mode, based on the triangulation state of the target graphic object, determine the phase between the image frame to be rendered and the adjacent previous image frame. Whether the ratio changes; wherein, the adjacent previous image frame is the previous frame adjacent to the to-be-rendered image frame in the target graphics animation;
  • a first rendering module configured to, for the triangulation state of the target graphics object, if it is determined that the image frame to be rendered has not changed compared with the adjacent previous image frame, based on the adjacent previous image frame
  • the triangulation data of the graphic object corresponding to the target graphic object on the image frame is used to render the target graphic object on the image frame to be rendered.
  • the present disclosure provides a non-transitory computer-readable storage medium, the computer-readable storage medium stores instructions, and when the instructions are run on a terminal device, the instructions are caused to cause the The terminal device implements the above method.
  • the present disclosure provides an animation rendering device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor executing the computer program , implement the above method.
  • the present disclosure provides a computer program product.
  • the computer program product includes a computer program/instruction. When the computer program/instruction is executed by a processor, the above method is implemented.
  • the present disclosure provides a computer program, which when executed by a processor causes the processor to implement the above method.
  • Figure 1 is a flow chart of an animation rendering method provided by an embodiment of the present disclosure
  • Figure 2 is a schematic diagram of a graphic object provided by an embodiment of the present disclosure
  • Figure 3 is a schematic diagram of another graphic object provided by an embodiment of the present disclosure.
  • Figure 4 is a polygonal schematic diagram provided by an embodiment of the present disclosure.
  • Figure 5 is a schematic diagram of another graphic object provided by an embodiment of the present disclosure.
  • Figure 6 is a schematic diagram of stroke drawing provided by an embodiment of the present disclosure.
  • Figure 7 is another schematic diagram of stroke drawing provided by an embodiment of the present disclosure.
  • Figure 8 is a schematic structural diagram of an animation rendering device provided by an embodiment of the present disclosure.
  • Figure 9 is a schematic structural diagram of an animation rendering device provided by an embodiment of the present disclosure.
  • the present disclosure provides an animation rendering method. First, the target graphic object on the image frame to be rendered in the target graphic animation and the graphic drawing mode of the target graphic object are determined. If it is determined that the graphic drawing mode of the target graphic object is the fill drawing mode, then Based on the triangulation state of the target graphics object, determine whether the image frame to be rendered has changed compared with the adjacent previous image frame, where the adjacent previous image frame is the upper image frame adjacent to the image frame to be rendered in the target graphics animation.
  • the triangulation data is used to render the target graphics object on the image frame to be rendered.
  • the embodiment of the present disclosure compares the triangulation state of the image frame to be rendered of the target graphics object with the adjacent previous image frame, and compares the target graphics object based on the triangulation data of the target graphics object in the adjacent previous image frame.
  • the rendering method avoids repeated triangulation of the target graphics object and improves rendering performance.
  • an embodiment of the present disclosure provides an animation rendering method.
  • Figure 1 is a flow chart of an animation rendering method provided by an embodiment of the present disclosure. The method includes:
  • S101 Determine the target graphics object on the image frame to be rendered in the target graphics animation and the graphics drawing method of the target graphics object.
  • the target graphic animation may be any continuous frame graphic animation, and each frame of the continuous frame animation includes at least one graphic object, and the same graphic object on each frame of the graphic animation has similarities.
  • the image frame to be rendered can be any frame of graphics animation in consecutive frames of graphics animation.
  • Graphic objects refer to elements on the image that are drawn based on the graphics drawing method. As shown in Figure 2, each letter in “HAPPY” can be drawn based on the graphics drawing method, so they all belong to the graphics object.
  • the target graphics object can be any graphics object on the image frame to be rendered in the target graphics animation.
  • Graphic drawing method refers to the drawing method of graphics, such as fill drawing method, stroke drawing method, etc.
  • the fill drawing method refers to filling the graphic object, for example, the graphic object can be filled with different colors;
  • the stroke drawing method refers to filling the outline of the graphic object, for example, the outline of the picture object can be filled with different backgrounds. Pattern.
  • the graphics drawing mode of the target graphics object can be determined according to the drawing instruction. Specifically, after the target graphics object on the image frame to be rendered is determined, the graphics drawing mode of the target graphics object is determined according to the drawing instruction.
  • the adjacent previous image frame is the previous frame in the target graphics animation adjacent to the image frame to be rendered.
  • the triangulation status is used to reflect whether the triangulation data changes. That is, the triangulation status can reflect whether the triangulation data changes.
  • the triangulation data can be obtained after triangulation processing of the graphic object. data.
  • Triangulation refers to dividing a graphical object into several triangles. It should be noted that this disclosure does not place any restrictions on the triangulation method.
  • the triangulation state can characterize the way a graphics object is triangulated.
  • the triangulation status includes the number of vertices of the target graphics object and/or the left and right status of the ear tip vertices, that is, the number of vertices of the target graphics object and/or the left and right status of the ear tip vertices can be used to reflect whether the triangulation data changes.
  • the number of vertices of the target graphics object refers to the number of all vertices that constitute the target graphics object;
  • the ear tip vertex refers to the vertex corresponding to the convex angle in the target graphics object on the image frame to be rendered, and is formed based on the convex angle.
  • the triangle contains no other vertices.
  • the number of vertices of the target graphics object of the image frame to be rendered is determined based on the drawing command and the number of vertices of the adjacent previous image. Whether the number of vertices of the target graphics object of the frame has changed. If the number of vertices of the target graphics object of the image frame to be rendered is different from the number of vertices of the target graphics object of the adjacent previous image frame, it means that the target graphics of the image frame to be rendered is different. The object's triangulation state has changed compared to the target graphics object on the adjacent previous image frame.
  • the number of vertices of the target graphics object of the image frame to be rendered is equal to that of the adjacent If the number of vertices of the target graphics object on the previous image frame is different, it means that the triangulation state of the target graphics object of the image frame to be rendered has changed compared with the target graphics object on the adjacent previous image frame, that is, the repetition cannot continue. Triangulate data using the target graphics object on the adjacent previous image frame.
  • the left and right states of each ear tip vertex of the target graphics object of the image frame to be rendered are determined. Whether the left and right states of each ear tip vertex of the target graphic object on the adjacent previous image frame have changed compared to the previous image frame. If it is determined that the left and right states of each ear tip vertex of the target graphic object of the image frame to be rendered have not changed compared with the left and right states of each ear tip vertex of the target graphic object on the adjacent previous image frame, then it is determined that the image frame to be rendered is consistent with the corresponding ear tip point. There is no change compared to the previous image frame. Otherwise, the image frame to be rendered has changed compared to the previous image frame.
  • the number of vertices of the target graphics object of the image frame to be rendered is A
  • the number of vertices of the target graphics object has not changed compared with the number of vertices of the target graphics object on the adjacent previous image frame, then continue to determine the left and right states of each ear tip vertex of the target graphics object in the image frame to be rendered and the number of vertices on the adjacent previous image. Whether the left and right states of each ear tip vertex of the target graphic object on the frame have changed compared to each other.
  • each ear tip vertex of the target graphic object of the image frame to be rendered are different from those of the target graphic object on the adjacent previous image frame. If the left and right states of each ear tip vertex have not changed, it is determined that the image frame to be rendered has not changed compared with the adjacent previous image frame, that is, the target graphics object triangulation on the adjacent previous image frame can continue to be reused. data, otherwise, the image frame to be rendered has changed compared with the adjacent previous image frame, that is, the triangulation data of the target graphics object on the adjacent previous image frame cannot be continued to be reused.
  • the number of vertices of the target graphics object of the image frame to be rendered is determined based on the drawing command and the number of vertices of the target graphics object on the adjacent previous image frame. Whether the number of vertices of the graphics object has changed, thereby determining whether the image frame to be rendered has changed compared to the adjacent previous image frame.
  • the image frame to be rendered has changed compared with the previous image frame; if If the number of vertices of the target graphics object of the rendered image frame is the same as the number of vertices of the target graphics object on the adjacent previous image frame, it means that the image frame to be rendered has not changed compared with the previous adjacent image frame.
  • the drawing command of the target graphics object on the image frame to be rendered and the drawing command on the adjacent previous image frame are respectively determined as the first drawing command and the second drawing command, and the first drawing command is extracted according to the preset rules.
  • the characteristics of the drawing command and the second drawing command determine whether the image frame to be rendered has changed compared with the adjacent previous image frame based on the comparison result of the characteristics of the first drawing command and the characteristics of the second drawing command.
  • the drawing command can be composed of multiple commands, such as move To, line To, etc.
  • the first drawing command is a drawing command of the target graphics object on the image frame to be rendered.
  • the second drawing command is a drawing command on an adjacent previous image frame of the target graphics object.
  • the preset rules are preset feature extraction rules, which can be set as needed.
  • the preset rules can be set to extract the first letter of each drawing command corresponding to the target graphics object on the image frame, and add each first letter to Characteristics of the drawing command corresponding to the target graphics object on the image frame are combined according to the drawing order.
  • This disclosure does not place any limitation on the setting method of the preset rules.
  • the characteristic of the drawing command may be an abbreviation of the drawing command, for example, the first letter of the drawing command is used as the characteristic of the drawing command. As shown in the code of the following drawing command, the characteristics of the corresponding drawing command are mlll.
  • Figure 3 is a schematic diagram of another graphic object provided by the embodiment of the present disclosure. It is assumed that the target graphic object of the image frame to be rendered is on the adjacent previous image frame. is the rectangle shown in Figure 3, where W1, B1, A1, and Z1 respectively correspond to the four vertices of the rectangle, and the coordinates corresponding to the four vertices are (W1.x, W1.y), (B1.x, B1.y), (A1.x,A1.y), (Z1.x,Z1.y).
  • the corresponding drawing command is as shown in the following code: moveTo(W1.x,W1.y);//m lineTo(B1.x,B1.y); //l lineTo(A1.x,A1.y); //l lineTo(Z1.x,Z1.y); //l
  • the characteristics of the second drawing command corresponding to the target graphics object on the adjacent previous image frame of the target graphics object of the image frame to be rendered are mlll. If the first drawing command corresponding to the target graphics object of the image frame to be rendered is If the characteristics of the drawing command are the same as the above-mentioned second drawing command, it is determined that the image frame to be rendered has not changed compared with the previous adjacent image frame.
  • the left and right states of the ear tip vertex of the target graphic object of the image frame to be rendered are determined based on the cross product of the predecessor vector and the successor vector of the ear tip vertex. Whether the left and right states of the ear tip vertices of the target graphic object on the adjacent previous image frame have changed compared to the adjacent previous image frame, thereby determining whether the image frame to be rendered has changed compared with the adjacent previous image frame.
  • the left and right state of the ear tip vertex of the target graphics object of the image frame to be rendered changes compared with the left and right status of the ear tip vertex of the target graphics object of the adjacent previous image frame, it means that the image frame to be rendered is compared with the adjacent previous image frame. has changed; if the left and right states of the ear apex of the target graphics object in the image frame to be rendered have not changed compared with the left and right states of the ear apex of the target graphic object in the adjacent previous image frame, it means that the image frame to be rendered is different from the adjacent apex. No changes from the previous image frame.
  • the ear tip vertex of the target graphic object of the image frame to be rendered is determined, and the intersection of the predecessor vector and the successor vector of the ear tip vertex is calculated.
  • Product based on the comparison result of the cross product corresponding to the ear tip vertex and the cross product corresponding to the corresponding ear tip vertex on the adjacent previous image frame, determine whether the image frame to be rendered has changed compared with the adjacent previous image frame.
  • triangulation refers to dividing the graphic object into several triangles. It should be noted that this disclosure does not place any limitations on the triangulation method.
  • the ear tip vertex refers to the vertex corresponding to the convex angle in the target graphics object of the image frame to be rendered, and the triangle formed by the convex angle does not contain other vertices.
  • the precursor vector and the successor vector refer to the order in which vectors are drawn.
  • the vector drawn first is called the precursor.
  • Figure 4 is a polygon schematic diagram provided by an embodiment of the present disclosure. As shown in Figure 4, assuming that the ear tip vertex is vertex B2, then its corresponding precursor vector is The successor vector is
  • the left and right state of the ear apex refers to the left and right state of the successor vector of the ear apex relative to the predecessor vector, that is, whether the successor vector of the ear apex is to the left or right of the predecessor vector.
  • the ear apex is vertex W2, which corresponds to The precursor vector of is The successor vector is It can be seen from Figure 4 that the successor vector in the precursor vector on the right side, so the vertex state of the ear tip of vertex W2 is on the right side, and its corresponding vertex is a concave angle.
  • the ear tip vertex of the target graphic object of the image frame to be rendered is determined, and the predecessor vector and successor of the ear tip vertex are calculated.
  • the cross product of vectors is calculated.
  • the target on the adjacent previous image frame of the image frame to be rendered will If the cross product of the predecessor vector and the successor vector of the corresponding ear tip vertex of the graphic object is less than 0 (or greater than 0), it is determined that the left and right status of the ear tip vertex has changed, thereby determining the difference between the image frame to be rendered and the adjacent previous image.
  • the positive and negative states of the cross product of the predecessor vector and the successor vector of the ear tip vertex C of the target graphics object of the image frame to be rendered are compared to the The positive and negative states of the cross product of the predecessor vector and the successor vector of the ear tip vertex C of the target graphics object on the adjacent previous image frame of the dyed image frame change, and the predecessor of the ear tip vertex D of the target graphics object in the image frame to be rendered changes.
  • the positive and negative states of the cross product of the vector and the successor vector change compared to the positive and negative states of the cross product of the predecessor vector and the successor vector of the ear tip vertex D of the target graphic object on the adjacent previous image frame of the image frame to be rendered, Then it is determined that the image frame to be rendered has changed compared with the adjacent previous image frame.
  • the triangulation state of the target graphics object of the image frame to be rendered and the triangulation state of the adjacent previous image frame are determined based on the number of vertices of the target graphics object and the left and right states of the ear tip vertices.
  • the triangulation state of the target graphic object is more accurate than whether it has changed.
  • the data obtained after triangulating any graphic object on any image frame is the triangulation data of the graphic object.
  • the target graphics object of the image frame to be rendered does not need to be triangulated again, and the adjacent adjacent graphics objects are directly used.
  • the triangulation data of the graphics object corresponding to the target graphics object on the previous image frame and the vertex coordinate data of the target graphics object can be used to render the target graphics object on the image frame to be rendered, avoiding duplication of the target graphics object. Triangulation, improved rendering performance.
  • Figure 5 is a schematic diagram of another graphic object provided by an embodiment of the present disclosure
  • the target graphic object is a rectangle W2B2A2Z2 as shown in Figure 5
  • its adjacent previous image frame is a rectangle W1B1A1Z1 as shown in Figure 3.
  • the rectangle W2B2A2Z2 can be rendered based on the triangulation data of rectangle W1B1A1Z1 and the vertex coordinate data of rectangle W2B2A2Z2.
  • the animation rendering method first determine the target graphics object on the image frame to be rendered in the target graphics animation and the graphics drawing method of the target graphics object. If the target graphics object is determined If the graphics drawing mode of the target graphic object is the fill drawing mode, then according to the triangulation state of the target graphic object, determine whether the image frame to be rendered has changed compared with the adjacent previous image frame, where the adjacent previous image frame is The previous frame in the target graphics animation adjacent to the image frame to be rendered, and then for the triangulation state of the target graphics object, if it is determined that the image frame to be rendered has not changed compared with the adjacent previous image frame, based on the adjacent The triangulation data of the graphics object corresponding to the target graphics object on the previous image frame is rendered to the target graphics object on the image frame to be rendered.
  • the embodiment of the present disclosure compares the triangulation state of the image frame to be rendered of the target graphics object with the adjacent previous image frame, and compares the target graphics object based on the triangulation data of the target graphics object in the adjacent previous image frame.
  • the rendering method avoids repeated triangulation of the target graphics object and improves rendering performance.
  • the target graphics object is triangulated based on the triangulation data of the adjacent previous image frame of the image frame to be rendered.
  • the stroke drawing method refers to filling the outline of the picture object.
  • Figure 6 is a schematic diagram of a stroke drawing provided by an embodiment of the present disclosure. As shown in Figure 6, the rectangle OPQR is a stroke drawing of the line segment MN. .
  • the triangulation data of the adjacent previous image frame of the target graphics object is first obtained, and then the triangulation data is multiplexed into the target graphics object.
  • the corresponding triangular part in the graphic object is triangulated, and then the triangular part of the target graphic object that is different from the adjacent previous image frame is triangulated.
  • the target graphic is obtained.
  • the triangulation data corresponding to the object is rendered based on the triangulation data of the target graphics object, and the target graphics object on the image frame to be rendered is rendered.
  • the triangulation data corresponding to the target graphics object is as follows:
  • the repeated drawing data of the drawing data of the target graphic object compared with the adjacent previous image frame is first determined, and the drawing data corresponding to the drawing data of the target graphic object except the repeated drawing data is determined.
  • triangulation processing is performed to obtain new triangulation data.
  • the triangulation data corresponding to the repeated drawing data and the new triangulation data are determined as the data to be drawn. Renders the triangulation data corresponding to the target graphics object on the graphics frame.
  • the figure shows the line segment MN and its corresponding stroked rectangle OPQR.
  • the stroke width is 10 pixels
  • four rectangle OPQR can be obtained
  • the vertex coordinates are then triangulated to obtain 2 triangles, namely triangle OPQ and triangle OQR.
  • Figure 7 is another schematic diagram of stroke drawing provided by an embodiment of the present disclosure.
  • Figure 7 is a newly added rectangular SQTU based on Figure 6.
  • the triangulation data in Figure 7 can be split into the triangulation data of the rectangle O1P1Q1R1 (that is, the triangulation data corresponding to the repeated drawing data) and the triangulation data of the rectangle SQTU Triangulation data (that is, new triangulation data), so that only the rectangular SQTU needs to be triangulated, realizing the reuse of repeated drawing data and improving rendering performance.
  • the present disclosure also provides an animation rendering device.
  • Figure 8 is a schematic structural diagram of an animation rendering device provided by an embodiment of the present disclosure.
  • the device includes:
  • the first determination module 801 is used to determine the target graphics object on the image frame to be rendered in the target graphics animation and the graphics drawing method of the target graphics object;
  • the second determination module 802 is used to determine the image frame to be rendered and the adjacent previous image frame based on the triangulation state of the target graphic object when it is determined that the graphics drawing mode of the target graphic object is the fill drawing mode. Whether the comparison has changed; wherein, the adjacent previous image frame is the previous frame adjacent to the to-be-rendered image frame in the target graphics animation;
  • the first rendering module 803 is configured to, for the triangulation state of the target graphics object, if it is determined that the image frame to be rendered has not changed compared with the adjacent previous image frame, based on the adjacent previous image frame
  • the triangulation data of the graphic object corresponding to the target graphic object on an image frame is used to render the target graphic object on the image frame to be rendered.
  • the second determination module includes:
  • the first determination sub-module is used to determine whether the image frame to be rendered has changed compared with the adjacent previous image frame with respect to the number of vertices of the target graphics object;
  • the second determination sub-module is used to determine whether the image frame to be rendered has changed compared with the adjacent previous image frame with respect to the left and right status of the ear tip vertex of the target graphic object.
  • the second determination sub-module is specifically used to:
  • the first determination sub-module includes:
  • the third determination sub-module is used to determine the drawing command of the target graphics object on the image frame to be rendered and the drawing command on the adjacent previous image frame as the first drawing command and the second drawing command respectively.
  • An extraction submodule configured to respectively extract features of the first drawing command and the second drawing command according to preset rules
  • the fourth determination sub-module is used to determine whether the image frame to be rendered has changed compared with the adjacent previous image frame based on the comparison result of the characteristics of the first drawing command and the characteristics of the second drawing command.
  • the second determination sub-module includes:
  • the fifth determination sub-module is used to determine the ear tip vertex of the target graphic object based on the triangulation data of the adjacent previous image frame;
  • the calculation submodule is used to calculate the cross product of the predecessor vector and the successor vector of the ear tip vertex;
  • the sixth determination sub-module is used to determine that the image frame to be rendered is the same as the adjacent one based on the comparison result between the cross product corresponding to the ear tip vertex and the cross product corresponding to the ear tip vertex of the adjacent previous image frame. Whether there have been changes compared to the previous image frame.
  • the device further includes:
  • a processing module configured to, when it is determined that the graphics drawing mode of the target graphic object is the stroke drawing mode, perform a processing on the target graphic object based on the triangulation data of the adjacent previous image frame of the image frame to be rendered. Perform triangulation processing to obtain triangulation data corresponding to the target graphic object;
  • the second rendering module is configured to render the target graphic object on the image frame to be rendered based on the triangulation data of the target graphic object.
  • the processing module includes:
  • the seventh determination sub-module is used to determine the difference between the drawing data of the target graphic object and the adjacent upper Repeated drawing data compared to an image frame;
  • a processing submodule configured to perform triangulation processing on the graphics portion corresponding to the drawing data in the drawing data of the target graphic object except the repeated drawing data, to obtain newly added triangulation data;
  • the eighth determination sub-module is used to determine the triangulation data corresponding to the repeated drawing data and the new triangulation data as the triangulation corresponding to the target graphics object on the image frame to be rendered. data.
  • the target graphic object on the image frame to be rendered in the target graphic animation and the graphic drawing mode of the target graphic object are first determined. If it is determined that the graphic drawing mode of the target graphic object is the fill drawing mode, Then based on the triangulation state of the target graphics object, determine whether the image frame to be rendered has changed compared with the adjacent previous image frame, where the adjacent previous image frame is the image frame adjacent to the image frame to be rendered in the target graphics animation.
  • the embodiment of the present disclosure compares the triangulation state of the image frame to be rendered of the target graphics object with the adjacent previous image frame, and compares the target graphics object based on the triangulation data of the target graphics object in the adjacent previous image frame.
  • the rendering method avoids repeated triangulation of the target graphics object and improves rendering performance.
  • embodiments of the present disclosure also provide a computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are run on a terminal device, the terminal device enables the terminal device to implement the present invention. The animation rendering method described in the embodiment is disclosed.
  • An embodiment of the present disclosure also provides a computer program product.
  • the computer program product includes a computer program/instruction.
  • the animation rendering method described in the embodiment of the present disclosure is implemented.
  • An embodiment of the present disclosure also provides a computer program, which when executed by a processor causes the processor to implement the animation rendering method described in the embodiment of the present disclosure.
  • an animation rendering device as shown in Figure 9, which may include:
  • the number of processors 901 in the animation rendering device may be one or more. In FIG. 9 , one processor is taken as an example. In some embodiments of the present disclosure, the processor 901, the memory 902, the input device 903 and the output device 904 may be connected through a bus or other means, wherein the connection through the bus is taken as an example in FIG. 9 .
  • the memory 902 can be used to store software programs and modules.
  • the processor 901 executes various functional applications and data processing of the animation rendering device by running the software programs and modules stored in the memory 902 .
  • the memory 902 may mainly include a program storage area and a data storage area, where the program storage area may store an operating system, at least one application program required for a function, and the like.
  • memory 902 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
  • the input device 903 may be used to receive input numeric or character information, and to generate signal input related to user settings and function control of the animation rendering device.
  • the processor 901 will load the executable files corresponding to the processes of one or more application programs into the memory 902 according to the following instructions, and the processor 901 will run the executable files stored in the memory 902. application to realize various functions of the above animation rendering device.

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Abstract

本公开提供了一种动画渲染方法、装置、设备及存储介质，所述方法包括：首先确定目标图形动画中的待渲染图像帧上的目标图形对象及其图形绘制方式，如果确定其图形绘制方式为填充绘制方式，则针对目标图形对象的三角剖分状态，确定待渲染图像帧与相邻上一图像帧相比是否发生变化，如果未发生变化，则基于相邻上一图像帧上与目标图形对象对应的图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。

Description

一种动画渲染方法、装置、设备及存储介质
相关申请的交叉引用
本申请要求于2022年7月6日提交的名称为“一种动画渲染方法、装置、设备及存储介质”的中国专利申请第202210797333.6号的优先权，该申请的公开通过引用被全部结合于此。
技术领域
本公开涉及数据处理领域，尤其涉及一种动画渲染方法、装置、设备及存储介质。
背景技术
Lottie是一个跨平台动画方案，可以通过Bodymovin插件解析AE(Adobe After Effects，动态图形软件)导出生成JSON文件，并在IOS、安卓、Web、React Native端实现动画效果。
然而，Web端仅提供了Canvas、SVG、HTML渲染，导致开发者使用ThreeJS、PixiJS等渲染引擎时，只能基于创建离屏的Canvas进行间接渲染，渲染性能较差。
发明内容
为了解决上述技术问题，本公开实施例提供了一种动画渲染方法。
第一方面，本公开提供了一种动画渲染方法，所述方法包括：
确定目标图形动画中的待渲染图像帧上的目标图形对象以及所述目标图形对象的图形绘制方式；
如果确定所述目标图形对象的图形绘制方式为填充绘制方式，则针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；其中，所述相邻上一图像帧为所述目标图形动画中与所述待渲染图像帧相邻的上一帧；
针对所述目标图形对象的三角剖分状态，如果确定所述待渲染图像帧与所述相邻上一图像帧相比未发生变化，则基于所述相邻上一图像帧上与所述目标图形对象对应的图形对象的三角剖分数据，对所述待渲染图像帧上的所 述目标图形对象进行渲染。
一种可选的实施方式中，所述针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化，包括：
针对所述目标图形对象的顶点数量，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；
和/或，针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化，其中耳尖顶点的左右状态指示出耳尖顶点的后继向量在耳尖顶点的前驱向量的左侧还是右侧。
一种可选的实施方式中，所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化，包括：
针对所述目标图形对象的顶点数量，如果确定所述待渲染图像帧与相邻上一图像帧相比未发生变化，则执行所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化的步骤。
一种可选的实施方式中，所述针对所述目标图形对象的顶点数量，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化，包括：
将所述目标图形对象在所述待渲染图像帧上的绘制命令以及在相邻上一图像帧上的绘制命令，分别确定为第一绘制命令和第二绘制命令；
按照预设规则分别提取所述第一绘制命令和所述第二绘制命令的特征；
基于所述第一绘制命令的特征和所述第二绘制命令的特征的对比结果，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化。
一种可选的实施方式中，所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化，包括：
基于所述相邻上一图像帧的三角剖分数据，确定所述目标图形对象的耳尖顶点；
计算耳尖顶点的前驱向量与后继向量的叉积；
基于耳尖顶点对应的叉积与所述相邻上一图像帧的相对应的耳尖顶点对应的叉积的比较结果，确定所述待渲染图像帧与所述相邻上一图像帧相比是 否发生变化。
一种可选的实施方式中，所述方法还包括：
如果确定所述目标图形对象的图形绘制方式为描边绘制方式，则基于所述待渲染图像帧的相邻上一图像帧的三角剖分数据，对所述目标图形对象进行三角剖分处理，得到所述目标图形对象对应的三角剖分数据；
基于所述目标图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
一种可选的实施方式中，所述基于所述待渲染图像帧的相邻上一图像帧的三角剖分数据，对所述目标图形对象进行三角剖分处理，得到所述目标图形对象对应的三角剖分数据，包括：
确定所述目标图形对象的绘制数据与所述相邻上一图像帧相比的重复绘制数据；
针对所述目标图形对象的绘制数据中除所述重复绘制数据之外的绘制数据对应的图形部分，进行三角剖分处理，得到新增三角剖分数据；
将所述重复绘制数据对应的三角剖分数据和所述新增三角剖分数据，确定为所述待渲染图像帧上的所述目标图形对象对应的三角剖分数据。
第二方面，本公开提供了一种动画渲染装置，所述装置包括：
第一确定模块，用于确定目标图形动画中的待渲染图像帧上的目标图形对象以及所述目标图形对象的图形绘制方式；
第二确定模块，用于确定所述目标图形对象的图形绘制方式为填充绘制方式时，针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；其中，所述相邻上一图像帧为所述目标图形动画中与所述待渲染图像帧相邻的上一帧；
第一渲染模块，用于针对所述目标图形对象的三角剖分状态，如果确定所述待渲染图像帧与所述相邻上一图像帧相比未发生变化，则基于所述相邻上一图像帧上与所述目标图形对象对应的图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
第三方面，本公开提供了一种非瞬态的计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令在终端设备上运行时，使得所述 终端设备实现上述的方法。
第四方面，本公开提供了一种动画渲染设备，包括：存储器，处理器，及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时，实现上述的方法。
第五方面，本公开提供了一种计算机程序产品，所述计算机程序产品包括计算机程序/指令，所述计算机程序/指令被处理器执行时实现上述的方法。
第六方面，本公开提供了一种计算机程序，当所述计算机程序被处理器执行时使得所述处理器实现上述的方法。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例提供的一种动画渲染方法的流程图；
图2为本公开实施例提供的一种图形对象示意图；
图3为本公开实施例提供的另一种图形对象示意图；
图4为本公开实施例提供的一种多边形示意图；
图5为本公开实施例提供的又一种图形对象示意图；
图6为本公开实施例提供的一种描边绘制示意图；
图7为本公开实施例提供的另一种描边绘制示意图；
图8为本公开实施例提供的一种动画渲染装置的结构示意图；
图9为本公开实施例提供的一种动画渲染设备的结构示意图。
具体实施方式
为了能够更清楚地理解本公开的上述目的、特征和优点，下面将对本公开的方案进行进一步描述。需要说明的是，在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本公开，但本公开还可以采用其他不同于在此描述的方式来实施；显然，说明书中的实施例只是本公开的一部分实施例，而不是全部的实施例。
本公开提供了一种动画渲染方法，首先确定目标图形动画中的待渲染图像帧上的目标图形对象以及目标图形对象的图形绘制方式，如果确定目标图形对象的图形绘制方式为填充绘制方式，则针对目标图形对象的三角剖分状态，确定待渲染图像帧与相邻上一图像帧相比是否发生变化，其中，相邻上一图像帧为目标图形动画中与待渲染图像帧相邻的上一帧，然后针对目标图形对象的三角剖分状态，如果确定待渲染图像帧与相邻上一图像帧相比未发生变化，则基于相邻上一图像帧上与目标图形对象对应的图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。
可见，本公开实施例通过将目标图形对象待渲染图像帧的三角剖分状态与相邻上一图像帧相比较，基于相邻上一图像帧中目标图形对象的三角剖分数据对目标图形对象进行渲染的方式，避免了对目标图形对象进行重复三角剖分，提升了渲染性能。
基于此，本公开实施例提供了一种动画渲染方法，参考图1，为本公开实施例提供的一种动画渲染方法的流程图，该方法包括：
S101：确定目标图形动画中的待渲染图像帧上的目标图形对象以及目标图形对象的图形绘制方式。
其中，目标图形动画可以为任一连续帧图形动画，并且该连续帧动画中的每帧动画上包括至少一个图形对象，每帧图形动画上的同一个图形对象之间具有相似性。
待渲染图像帧可以为连续帧图形动画中的任一帧图形动画。
图形对象是指基于图形绘制方式进行绘制的图像上的元素，如图2所示，“HAPPY”中的各个字母均可以基于图形绘制方式进行绘制，因此均属于图形对象。
目标图形对象可以为目标图形动画中的待渲染图像帧上的任意一个图形对象。
图形绘制方式是指图形的绘制方法，如填充绘制方式、描边绘制方式等。
具体地，填充绘制方式是指对图形对象进行填充，如可以将图形对象填充为不同颜色；描边绘制方式是指对图形对象的轮廓进行填充，如可以将图片对象的轮廓填充为不同的底纹。
一种可选的实施方式中，可以根据绘制指令确定目标图形对象的图形绘制方式，具体的，在确定待渲染图像帧上的目标图形对象后，根据绘制指令确定目标图形对象的图形绘制方式。
S102：如果确定目标图形对象的图形绘制方式为填充绘制方式，则针对目标图形对象的三角剖分状态，确定待渲染图像帧与相邻上一图像帧相比是否发生变化。
其中，相邻上一图像帧为目标图形动画中与待渲染图像帧相邻的上一帧。
三角剖分状态用于反映三角剖分数据是否发生变化，即三角剖分状态能够反映出三角剖分数据是否发生变化，所述三角剖分数据可以是对图形对象进行三角剖分处理后得到的数据。
三角剖分是指将图形对象切分为若干个三角形，需要说明的是，本公开对三角剖分的方法不做任何限定。三角剖分状态可以表征对图形对象进行三角形分割的方式。
三角剖分状态包括目标图形对象的顶点数量和/或耳尖顶点的左右状态，即目标图形对象的顶点数量和/或耳尖顶点的左右状态能够用于反映三角剖分数据是否发生变化。
具体地，目标图形对象的顶点数量是指构成目标图形对象的全部顶点的数量；耳尖顶点是指待渲染图像帧上的目标图形对象中，凸角所对应的顶点，并且基于该凸角所构成的三角形不包含其他顶点。
一种可选的实施方式中，若三角剖分状态包括目标图形对象的顶点数量和耳尖顶点的左右状态，则基于绘制命令确定待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧的目标图形对象的顶点数量相比是否发生变化，如果待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧的目标图形对象顶点数量不同，则说明待渲染图像帧的目标图形对象的三角剖分状态与相邻上一图像帧上的目标图形对象相比已发生变化。
本公开实施例中，如果待渲染图像帧的目标图形对象的顶点数量与相邻 上一图像帧上的目标图形对象顶点数量不同，则说明待渲染图像帧的目标图形对象的三角剖分状态与相邻上一图像帧上的目标图形对象相比已发生变化，即不能继续复用相邻上一图像帧上的目标图形对象的三角剖分数据。
如果确定待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧上的目标图形对象顶点数量相比未发生变化，则确定待渲染图像帧的目标图形对象的各个耳尖顶点的左右状态与相邻上一图像帧上的目标图形对象的各个耳尖顶点的左右状态相比是否发生变化。如果确定待渲染图像帧的目标图形对象的各个耳尖顶点的左右状态与相邻上一图像帧上的目标图形对象的各个耳尖顶点的左右状态相比未发生变化，则确定待渲染图像帧与相邻上一图像帧相比未发生变化，否则，待渲染图像帧与相邻上一图像帧相比已发生变化。
本公开实施例中，假设待渲染图像帧的目标图形对象的顶点数量为A，相邻上一图像帧上的目标图形对象的顶点数量为B，若A＝B，则说明待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧上的目标图形对象顶点数量相比未发生变化，则继续确定待渲染图像帧的目标图形对象的各个耳尖顶点的左右状态与相邻上一图像帧上的目标图形对象的各个耳尖顶点的左右状态相比是否发生变化，如果确定确定待渲染图像帧的目标图形对象的各个耳尖顶点的左右状态与相邻上一图像帧上的目标图形对象的各个耳尖顶点的左右状态相比未发生变化，则确定待渲染图像帧与相邻上一图像帧相比未发生变化，即可以继续复用相邻上一图像帧上的目标图形对象三角剖分数据，否则，待渲染图像帧与相邻上一图像帧相比已发生变化，即不能继续复用相邻上一图像帧上的目标图形对象的三角剖分数据。
另一种可选的实施方式中，还可以遍历待渲染图像帧的目标图形对象的所有顶点，判断与相邻上一图像帧上的目标图形对象的顶点数量相比，顶点数量是否发生变化，在确定待渲染图像帧的目标图形对象的顶点数量未发生变化后，再根据待渲染图像帧的目标图形对象的耳尖顶点的左右状态判断与相邻上一图像帧上的目标图形对象的耳尖顶点的左右状态相比是否发生变化，从而确定待渲染图像帧与相邻上一图像帧相比是否发生变化。
需要说明的是，目标图形对象的顶点数量以及耳尖顶点的左右状态的计算可参考下述描述，本公开在此不再赘述。
又一种可选的实施方式中，若三角剖分状态仅包括目标图形对象的顶点数量，则基于绘制命令确定待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧上的目标图形对象的顶点数量相比是否发生变化，从而确定待渲染图像帧与相邻上一图像帧相比是否发生变化。
如果待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧中的目标图形对象的顶点数量不同，则说明待渲染图像帧与相邻上一图像帧相比已发生变化；如果待渲染图像帧的目标图形对象的顶点数量与相邻上一图像帧上的目标图形对象的顶点数量相同，则说明待渲染图像帧与相邻上一图像帧相比未发生变化。
具体地，将目标图形对象在待渲染图像帧上的绘制命令以及在相邻上一图像帧上的绘制命令，分别确定为第一绘制命令和第二绘制命令，按照预设规则分别提取第一绘制命令和第二绘制命令的特征，基于第一绘制命令的特征和第二绘制命令的特征的对比结果，确定待渲染图像帧与相邻上一图像帧相比是否发生变化。
其中，绘制命令可由多条命令组成，如move To、line To等。
第一绘制命令为目标图形对象在待渲染图像帧上的绘制命令。
第二绘制命令为目标图形对象的相邻上一图像帧上的绘制命令。
预设规则为预先设置的特征提取规则，可根据需要进行设定，如预设规则可以设置为，分别提取图像帧上的目标图形对象对应的每条绘制命令的首字母，并将各首字母按照绘制顺序组合成该图像帧上的目标图形对象对应的绘制命令的特征。本公开在此对于预设规则的设置方式不做任何限定。
绘制命令的特征可为绘制命令的简写，例如将绘制命令的首字母作为该绘制命令的特征。如下述绘制命令的代码所示，其对应的绘制命令的特征为mlll。
为了更清晰地对本公开实施例进行理解，参考图3，为本公开实施例提供的另一种图形对象示意图，假设待渲染图像帧的目标图形对象的相邻上一图像帧上的目标图形对象为图3所示的矩形，其中，W1、B1、A1、Z1分别对应该矩形的四个顶点，该四个顶点对应的坐标分别为(W1.x,W1.y)、(B1.x,B1.y)、(A1.x,A1.y)、(Z1.x,Z1.y)。
其对应的绘制命令如下代码所示：
moveTo(W1.x,W1.y)；//m
lineTo(B1.x,B1.y)；//l
lineTo(A1.x,A1.y)；//l
lineTo(Z1.x,Z1.y)；//l
由此可知，待渲染图像帧的目标图形对象的相邻上一图像帧上的目标图形对象所对应的第二绘制命令的特征为mlll，若待渲染图像帧的目标图形对象所对应的第一绘制命令的特征与上述第二绘制命令相同，则确定待渲染图像帧与相邻上一图像帧相比未发生变化。
又一种可选的实施方式中，若三角剖分状态仅包括耳尖顶点的左右状态，基于耳尖顶点的前驱向量与后继向量的叉积，确定待渲染图像帧的目标图形对象的耳尖顶点左右状态与相邻上一图像帧上的目标图形对象的耳尖顶点左右状态相比是否发生变化，从而确定待渲染图像帧与相邻上一图像帧相比是否发生变化。
如果待渲染图像帧的目标图形对象的耳尖顶点左右状态与相邻上一图像帧的目标图形对象的耳尖顶点左右状态相比发生变化，则说明待渲染图像帧与相邻上一图像帧相比已发生变化；如果待渲染图像帧的目标图形对象的耳尖顶点左右状态与相邻上一图像帧上的目标图形对象的耳尖顶点左右状态相比未发生变化，则说明待渲染图像帧与相邻上一图像帧相比未发生变化。
具体地，基于待渲染图像帧的相邻上一图像帧上的目标图形对象的三角剖分数据，确定待渲染图像帧的目标图形对象的耳尖顶点，计算耳尖顶点的前驱向量与后继向量的叉积，基于耳尖顶点对应的叉积与相邻上一图像帧上的相对应的耳尖顶点对应的叉积的比较结果，确定待渲染图像帧与相邻上一图像帧相比是否发生变化。
其中，三角剖分是指将图形对象切分为若干个三角形，需要说明的是，本公开对三角剖分的方法不做任何限定。
耳尖顶点是指待渲染图像帧的目标图形对象中，凸角所对应的顶点，并且基于由该凸角所构成的三角形不包含其他顶点。
前驱向量与后驱向量是指向量绘制的先后顺序，先绘制的向量称为前驱 向量，后绘制的向量成为后驱向量，参考图4，为本公开实施例提供的一种多边形示意图，如图4所示，假设耳尖顶点为顶点B2，那么其对应的前驱向量为后继向量为
耳尖顶点的左右状态是指耳尖顶点的后继向量相对于前驱向量的左右状态，即耳尖顶点的后继向量在前驱向量的左侧还是右侧，继续参考图4，假设耳尖顶点为顶点W2，其对应的前驱向量为后继向量为由图4可以看出后继向量在前驱向量的右侧，因此顶点W2的耳尖顶点状态为右侧，其对应的顶点为凹角。
本公开实施例中，基于待渲染图像帧的相邻上一图像帧上的目标图形对象的三角剖分数据，确定待渲染图像帧的目标图形对象的耳尖顶点，计算耳尖顶点的前驱向量与后继向量的叉积，若待渲染图像帧的目标图形对象的任一个耳尖顶点的前驱向量与后继向量的叉积大于0(或小于0)，待渲染图像帧的相邻上一图像帧上的目标图形对象的相对应的一个耳尖顶点的前驱向量与后继向量的叉积小于0(或大于0)，则确定这个耳尖顶点的左右状态已发生变化，从而确定待渲染图像帧与相邻上一图像帧相比已发生变化；若待渲染图像帧的目标图形对象的每个耳尖顶点的前驱向量与后继向量的叉积与相邻上一图像帧上的目标图形对象的相对应的耳尖顶点的前驱向量与后继向量的叉积均大于0或均小于0，则确定耳尖顶点的左右状态未发生变化，从而确定待渲染图像帧与相邻上一图像帧相比未发生变化。更具体而言，以图4为例，若待渲染图像帧的目标图形对象的耳尖顶点W2的前驱向量与后继向量的叉积大于0(或小于0)，待渲染图像帧的相邻上一图像帧上的目标图形对象的耳尖顶点W2的前驱向量与后继向量的叉积小于0(或大于0)，则确定这个耳尖顶点W2的左右状态已发生变化，从而确定待渲染图像帧与相邻上一图像帧相比已发生变化。应理解，若待渲染图像帧的目标图形对象的两个或更多个耳尖顶点中的每个耳尖顶点的前驱向量与后继向量的叉积的正负状态相比于待渲染图像帧的相邻上一图像帧上的目标图形对象的相对应的耳尖顶点的前驱向量与后继向量的叉积的正负状态发生变化，则确定待渲染图像帧与相邻上一图像帧相比已发生变化。举例而言，若待渲染图像帧的目标图形对象的耳尖顶点C的前驱向量与后继向量的叉积的正负状态相比于待渲 染图像帧的相邻上一图像帧上的目标图形对象的耳尖顶点C的前驱向量与后继向量的叉积的正负状态发生变化，并且待渲染图像帧的目标图形对象的耳尖顶点D的前驱向量与后继向量的叉积的正负状态相比于待渲染图像帧的相邻上一图像帧上的目标图形对象的耳尖顶点D的前驱向量与后继向量的叉积的正负状态发生变化，则确定待渲染图像帧与相邻上一图像帧相比已发生变化。
需要说明的是，本公开对耳尖顶点左右状态的判定方法不做任何限制。
值得注意的是，将上述两种实施方式相结合，即基于目标图形对象的顶点数量和耳尖顶点的左右状态确定待渲染图像帧的目标图形对象的三角剖分状态与相邻上一图像帧的目标图形对象的三角剖分状态相比是否发生变化更为准确，具体参考S102的描述，本公开在此不做任何赘述。
S103：针对目标图形对象的三角剖分状态，如果确定待渲染图像帧与相邻上一图像帧相比未发生变化，则基于相邻上一图像帧上与目标图形对象对应的图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。
其中，对任一图像帧上的任一图形对象进行三角剖分处理后得到的数据即为该图形对象的三角剖分数据。
本公开实施例中，若待渲染图像帧的目标图形对象的顶点数量和耳尖顶点的左右状态均未发生变化，则待渲染图像帧的目标图形对象无需重新进行三角剖分处理，直接利用相邻上一图像帧上与目标图形对象对应的图形对象的三角剖分数据及目标图形对象的顶点坐标数据等，即可对待渲染图像帧上的目标图形对象进行渲染，避免了对目标图形对象进行重复三角剖分，提升了渲染性能。
参考图5，为本公开实施例提供的又一种图形对象示意图，假设目标图形对象为如图5所示的矩形W2B2A2Z2，其相邻上一图像帧为如图3所示的矩形W1B1A1Z1，通过判断，矩形W2B2A2Z2顶点数量及耳尖顶点左右状态均未发生变化，则可以基于矩形W1B1A1Z1的三角剖分数据及矩形W2B2A2Z2的顶点坐标数据，对矩形W2B2A2Z2进行渲染。
本公开实施例提供的动画渲染方法中，首先确定目标图形动画中的待渲染图像帧上的目标图形对象以及目标图形对象的图形绘制方式，如果确定目 标图形对象的图形绘制方式为填充绘制方式，则针对目标图形对象的三角剖分状态，确定待渲染图像帧与相邻上一图像帧相比是否发生变化，其中，相邻上一图像帧为目标图形动画中与待渲染图像帧相邻的上一帧，然后针对目标图形对象的三角剖分状态，如果确定待渲染图像帧与相邻上一图像帧相比未发生变化，则基于相邻上一图像帧上与目标图形对象对应的图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。
可见，本公开实施例通过将目标图形对象待渲染图像帧的三角剖分状态与相邻上一图像帧相比较，基于相邻上一图像帧中目标图形对象的三角剖分数据对目标图形对象进行渲染的方式，避免了对目标图形对象进行重复三角剖分，提升了渲染性能。
在本公开一些实施例中，如果确定目标图形对象的图形绘制方式为描边绘制方式，则基于待渲染图像帧的相邻上一图像帧的三角剖分数据，对目标图形对象进行三角剖分处理，得到目标图形对象对应的三角剖分数据，然后，基于目标图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。
其中，描边绘制方式是指对图片对象的轮廓进行填充，参考图6，为本公开实施例提供的一种描边绘制示意图，如图6所示，矩形OPQR为对线段MN的描边绘制。
本公开实施例中，如果确定目标图形对象的图形绘制方式为描边绘制方式，首先获取目标图形对象的相邻上一图像帧的三角剖分数据，然后将该三角剖分数据复用于目标图形对象中与之对应的三角部分，再对目标图形对象区别于相邻上一图像帧的三角部分进行三角剖分处理，与相邻上一图像帧的三角剖分数据累加后，得到目标图形对象对应的三角剖分数据，基于目标图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。
具体地，目标图形对象对应的三角剖分数据如下所述：
一种可选的实施方式中，首先确定目标图形对象的绘制数据与相邻上一图像帧相比的重复绘制数据，针对目标图形对象的绘制数据中除重复绘制数据之外的绘制数据对应的图形部分，进行三角剖分处理，得到新增三角剖分数据，将重复绘制数据对应的三角剖分数据和新增三角剖分数据，确定为待 渲染图形帧上的目标图形对象对应的三角剖分数据。
如图6所示，图中显示有线段MN以及其对应的描边后的矩形OPQR，假设描边宽度为10像素，那么根据线段MN的绘制数据及描边宽度，可以得到矩形OPQR的四个顶点坐标，然后通过三角剖分，得到2个三角形，即三角形OPQ、三角形OQR。
假设目标图形对象为图7所示的图形，参考图7，为本公开实施例提供的另一种描边绘制示意图，由图7可知，图7为在图6的基础上新增加了矩形SQTU，由于描边数据为一维数据，其数据可以累积，因此图7的三角剖分数据可拆分为矩形O1P1Q1R1的三角剖分数据(即重复绘制数据对应的三角剖分数据)和矩形SQTU的三角剖分数据(即新增三角剖分数据)，从而只需对矩形SQTU进行三角剖分即可，实现了对重复绘制数据的复用，提高了渲染性能。
基于上述方法实施例，本公开还提供了一种动画渲染装置，参考图8，为本公开实施例提供的一种动画渲染装置的结构示意图，所述装置包括：
第一确定模块801，用于确定目标图形动画中的待渲染图像帧上的目标图形对象以及所述目标图形对象的图形绘制方式；
第二确定模块802，用于确定所述目标图形对象的图形绘制方式为填充绘制方式时，针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；其中，所述相邻上一图像帧为所述目标图形动画中与所述待渲染图像帧相邻的上一帧；
第一渲染模块803，用于针对所述目标图形对象的三角剖分状态，如果确定所述待渲染图像帧与所述相邻上一图像帧相比未发生变化，则基于所述相邻上一图像帧上与所述目标图形对象对应的图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
一种可选的实施方式中，所述第二确定模块包括：
第一确定子模块，用于针对所述目标图形对象的顶点数量，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；
第二确定子模块，用于针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化。
一种可选的实施方式中，所述第二确定子模块具体用于：
针对所述目标图形对象的顶点数量，如果确定所述待渲染图像帧与相邻上一图像帧相比未发生变化，则执行所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化的步骤。
一种可选的实施方式中，所述第一确定子模块包括：
第三确定子模块，用于将所述目标图形对象在所述待渲染图像帧上的绘制命令以及在相邻上一图像帧上的绘制命令，分别确定为第一绘制命令和第二绘制命令；
提取子模块，用于按照预设规则分别提取所述第一绘制命令和所述第二绘制命令的特征；
第四确定子模块，用于基于所述第一绘制命令的特征和所述第二绘制命令的特征的对比结果，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化。
一种可选的实施方式中，所述第二确定子模块包括：
第五确定子模块，用于基于所述相邻上一图像帧的三角剖分数据，确定所述目标图形对象的耳尖顶点；
计算子模块，用于计算耳尖顶点的前驱向量与后继向量的叉积；
第六确定子模块，用于基于耳尖顶点对应的叉积与所述相邻上一图像帧的相对应的耳尖顶点对应的叉积的比较结果，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化。
一种可选的实施方式中，所述装置还包括：
处理模块，用于在确定所述目标图形对象的图形绘制方式为描边绘制方式时，基于所述待渲染图像帧的相邻上一图像帧的三角剖分数据，对所述目标图形对象进行三角剖分处理，得到所述目标图形对象对应的三角剖分数据；
第二渲染模块，用于基于所述目标图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
一种可选的实施方式中，所述处理模块包括：
第七确定子模块，用于确定所述目标图形对象的绘制数据与所述相邻上 一图像帧相比的重复绘制数据；
处理子模块，用于针对所述目标图形对象的绘制数据中除所述重复绘制数据之外的绘制数据对应的图形部分，进行三角剖分处理，得到新增三角剖分数据；
第八确定子模块，用于将所述重复绘制数据对应的三角剖分数据和所述新增三角剖分数据，确定为所述待渲染图像帧上的所述目标图形对象对应的三角剖分数据。
本公开实施例提供的动画渲染装置中，首先确定目标图形动画中的待渲染图像帧上的目标图形对象以及目标图形对象的图形绘制方式，如果确定目标图形对象的图形绘制方式为填充绘制方式，则针对目标图形对象的三角剖分状态，确定待渲染图像帧与相邻上一图像帧相比是否发生变化，其中，相邻上一图像帧为目标图形动画中与待渲染图像帧相邻的上一帧，然后针对目标图形对象的三角剖分状态，如果确定待渲染图像帧与相邻上一图像帧相比未发生变化，则基于相邻上一图像帧上与目标图形对象对应的图形对象的三角剖分数据，对待渲染图像帧上的目标图形对象进行渲染。
可见，本公开实施例通过将目标图形对象待渲染图像帧的三角剖分状态与相邻上一图像帧相比较，基于相邻上一图像帧中目标图形对象的三角剖分数据对目标图形对象进行渲染的方式，避免了对目标图形对象进行重复三角剖分，提升了渲染性能。
除了上述方法和装置以外，本公开实施例还提供了一种计算机可读存储介质，计算机可读存储介质中存储有指令，当所述指令在终端设备上运行时，使得所述终端设备实现本公开实施例所述的动画渲染方法。
本公开实施例还提供了一种计算机程序产品，所述计算机程序产品包括计算机程序/指令，所述计算机程序/指令被处理器执行时实现本公开实施例所述的动画渲染方法。
本公开实施例还提供了一种计算机程序，当所述计算机程序被处理器执行时使得所述处理器实现本公开实施例所述的动画渲染方法。
另外，本公开实施例还提供了一种动画渲染设备，参见图9所示，可以包括：
处理器901、存储器902、输入装置903和输出装置904。动画渲染设备中的处理器901的数量可以一个或多个，图9中以一个处理器为例。在本公开的一些实施例中，处理器901、存储器902、输入装置903和输出装置904可通过总线或其它方式连接，其中，图9中以通过总线连接为例。
存储器902可用于存储软件程序以及模块，处理器901通过运行存储在存储器902的软件程序以及模块，从而执行动画渲染设备的各种功能应用以及数据处理。存储器902可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序等。此外，存储器902可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。输入装置903可用于接收输入的数字或字符信息，以及产生与动画渲染设备的用户设置以及功能控制有关的信号输入。
具体在本实施例中，处理器901会按照如下的指令，将一个或一个以上的应用程序的进程对应的可执行文件加载到存储器902中，并由处理器901来运行存储在存储器902中的应用程序，从而实现上述动画渲染设备的各种功能。
需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本公开的具体实施方式，使本领域技术人员能够理解或实现本公开。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所述的这些实施例， 而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (12)

  1. 一种动画渲染方法，所述方法包括：
    确定目标图形动画中的待渲染图像帧上的目标图形对象以及所述目标图形对象的图形绘制方式；
    如果确定所述目标图形对象的图形绘制方式为填充绘制方式，则针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；其中，所述相邻上一图像帧为所述目标图形动画中与所述待渲染图像帧相邻的上一帧；
    针对所述目标图形对象的三角剖分状态，如果确定所述待渲染图像帧与所述相邻上一图像帧相比未发生变化，则基于所述相邻上一图像帧上与所述目标图形对象对应的图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
  2. 根据权利要求1所述的方法，其中，所述针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化，包括：
    针对所述目标图形对象的顶点数量，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；
    和/或，针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化，其中耳尖顶点的左右状态指示出耳尖顶点的后继向量在耳尖顶点的前驱向量的左侧还是右侧。
  3. 根据权利要求2所述的方法，其中，所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化，包括：
    针对所述目标图形对象的顶点数量，如果确定所述待渲染图像帧与相邻上一图像帧相比未发生变化，则执行所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化的步骤。
  4. 根据权利要求2所述的方法，其中，所述针对所述目标图形对象的顶 点数量，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化，包括：
    将所述目标图形对象在所述待渲染图像帧上的绘制命令以及在相邻上一图像帧上的绘制命令，分别确定为第一绘制命令和第二绘制命令；
    按照预设规则分别提取所述第一绘制命令和所述第二绘制命令的特征；
    基于所述第一绘制命令的特征和所述第二绘制命令的特征的对比结果，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化。
  5. 根据权利要求2所述的方法，其中，所述针对所述目标图形对象的耳尖顶点的左右状态，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化，包括：
    基于所述相邻上一图像帧的三角剖分数据，确定所述目标图形对象的耳尖顶点；
    计算耳尖顶点的前驱向量与后继向量的叉积；
    基于耳尖顶点对应的叉积与所述相邻上一图像帧的相对应的耳尖顶点对应的叉积的比较结果，确定所述待渲染图像帧与所述相邻上一图像帧相比是否发生变化。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：
    如果确定所述目标图形对象的图形绘制方式为描边绘制方式，则基于所述待渲染图像帧的相邻上一图像帧的三角剖分数据，对所述目标图形对象进行三角剖分处理，得到所述目标图形对象对应的三角剖分数据；
    基于所述目标图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
  7. 根据权利要求6所述的方法，其中，所述基于所述待渲染图像帧的相邻上一图像帧的三角剖分数据，对所述目标图形对象进行三角剖分处理，得到所述目标图形对象对应的三角剖分数据，包括：
    确定所述目标图形对象的绘制数据与所述相邻上一图像帧相比的重复绘制数据；
    针对所述目标图形对象的绘制数据中除所述重复绘制数据之外的绘制数据对应的图形部分，进行三角剖分处理，得到新增三角剖分数据；
    将所述重复绘制数据对应的三角剖分数据和所述新增三角剖分数据，确 定为所述待渲染图像帧上的所述目标图形对象对应的三角剖分数据。
  8. 一种动画渲染装置，所述装置包括：
    第一确定模块，用于确定目标图形动画中的待渲染图像帧上的目标图形对象以及所述目标图形对象的图形绘制方式；
    第二确定模块，用于确定所述目标图形对象的图形绘制方式为填充绘制方式时，针对所述目标图形对象的三角剖分状态，确定所述待渲染图像帧与相邻上一图像帧相比是否发生变化；其中，所述相邻上一图像帧为所述目标图形动画中与所述待渲染图像帧相邻的上一帧；
    第一渲染模块，用于针对所述目标图形对象的三角剖分状态，如果确定所述待渲染图像帧与所述相邻上一图像帧相比未发生变化，则基于所述相邻上一图像帧上与所述目标图形对象对应的图形对象的三角剖分数据，对所述待渲染图像帧上的所述目标图形对象进行渲染。
  9. 一种非瞬态的计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令在终端设备上运行时，使得所述终端设备实现如权利要求1-7中任一项所述的方法。
  10. 一种动画渲染设备，包括：存储器，处理器，及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时，实现如权利要求1-7中任一项所述的方法。
  11. 一种计算机程序产品，所述计算机程序产品包括计算机程序/指令，所述计算机程序/指令被处理器执行时实现如权利要求1-7中任一项所述的方法。
  12. 一种计算机程序，当所述计算机程序被处理器执行时使得所述处理器实现如权利要求1-7中任一项所述的方法。
PCT/CN2023/106047 2022-07-06 2023-07-06 一种动画渲染方法、装置、设备及存储介质 Ceased WO2024008142A1 (zh)

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