CN112346581A - Method and device for drawing movement track and computer readable storage medium - Google Patents
Method and device for drawing movement track and computer readable storage medium Download PDFInfo
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- CN112346581A CN112346581A CN201910724614.7A CN201910724614A CN112346581A CN 112346581 A CN112346581 A CN 112346581A CN 201910724614 A CN201910724614 A CN 201910724614A CN 112346581 A CN112346581 A CN 112346581A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
- G06F3/0483—Interaction with page-structured environments, e.g. book metaphor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/80—Creating or modifying a manually drawn or painted image using a manual input device, e.g. mouse, light pen, direction keys on keyboard
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/048—Indexing scheme relating to G06F3/048
- G06F2203/04808—Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
Abstract
Disclosed herein are a method, an apparatus and a computer-readable storage medium for drawing a movement trajectory, including: the terminal receives a touch movement event for drawing a movement track by using a local frame layer of the terminal; wherein the touch movement event comprises coordinate information of a touch point; and drawing a moving track according to the coordinate information of the touch point every time a touch moving event is received. The method and the device realize the instant drawing of the moving track, thereby greatly shortening the drawing time delay of the moving track and improving the user experience.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method and an apparatus for drawing a movement trajectory, and a computer-readable storage medium.
Background
In the video conference system, the electronic whiteboard can effectively improve the communication of the multi-end users of the conference and improve the experience of the participants of the video conference.
In the related art, when a movement track is drawn, a Linux-based android system with free and open source codes receives a touch movement event for drawing the movement track, and draws the movement track according to the touch movement event.
However, since the android system has a complex moving trajectory drawing mechanism, the moving trajectory cannot be drawn according to the touch moving event in real time, and when the terminal draws the moving trajectory, there may be a plurality of touch moving events, so that there is a long time delay in drawing the moving trajectory, and the user experience is reduced.
Disclosure of Invention
The embodiment of the invention provides a method and a device for drawing a moving track and a computer readable storage medium, which can greatly shorten the drawing time delay of the moving track and improve the user experience.
The embodiment of the invention provides a method for drawing a moving track, which comprises the following steps:
the terminal receives a touch movement event for drawing a movement track by using a local frame layer of the terminal; wherein the touch movement event includes coordinate information of a touch point;
and when a touch movement event is received, the terminal draws a movement track according to the coordinate information of the touch point.
An embodiment of the present invention further provides a terminal, including:
the receiving module is used for receiving a touch movement event for drawing a movement track by utilizing a local frame layer of the terminal; wherein the touch movement event includes coordinate information of a touch point;
and the processing module is used for drawing a moving track according to the coordinate information of the touch point when a touch moving event is received.
The embodiment of the present invention further provides a device for drawing a movement trajectory, including: a processor and a memory, wherein the memory has stored therein the following commands executable by the processor:
receiving a touch movement event for drawing a movement track by using a local frame layer of a terminal; wherein the touch movement event includes coordinate information of a touch point;
and drawing a moving track according to the coordinate information of the touch point every time a touch moving event is received.
The embodiment of the invention also provides a computer-readable storage medium, wherein a computer executable command is stored on the storage medium, and the computer executable command is used for executing the following steps:
receiving a touch movement event for drawing a movement track by using a local frame layer of a terminal; wherein the touch movement event includes coordinate information of a touch point;
and drawing a moving track according to the coordinate information of the touch point every time a touch moving event is received.
The terminal receives the touch moving event for drawing the moving track by using the local frame layer of the terminal, and when a touch moving event is received, the moving track is drawn according to the coordinate information of the touch point included in the touch moving event, so that the moving track is drawn immediately, the drawing time delay of the moving track is greatly shortened, and the user experience is improved.
Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the application do not constitute a limitation of the embodiments of the invention.
Fig. 1 is a schematic flow chart of a method for drawing a movement trajectory according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for drawing a movement trajectory according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
An embodiment of the present invention provides a method for drawing a movement trajectory, as shown in fig. 1, including:
101, a terminal receives a touch movement event for drawing a movement track by using a local frame layer of the terminal; wherein the touch movement event includes coordinate information of the touch point.
In an exemplary embodiment, the touch movement event received by the embodiment of the present invention is directly obtained from the touch device hardware through a native layer (JNI) in a native framework layer. The touch move event is a type of touch event, which further includes: a touch down event and a touch release event.
And 102, drawing a moving track by the terminal according to the coordinate information of the touch point when a touch moving event is received.
In an exemplary embodiment, the method for drawing the movement track provided by the embodiment of the present invention is implemented in a local framework layer (native layer) by a JNI.
In an exemplary embodiment, the terminal performs drawing of the movement track according to the coordinate information of the touch point, and the drawing includes:
and drawing a moving track by the terminal on the Overlay layer according to the coordinate information of the touch point.
In an exemplary embodiment, drawing of a movement track at the Overlay layer instead of drawing a movement track at the OSD layer can improve the drawing speed, because drawing of a movement track at the OSD layer requires the android system to draw by using the interface display function surfactin, which has a delay of about 2 frames, and drawing of a movement track at the Overlay layer is direct drawing without using the surfactin, thereby improving the drawing speed.
In an exemplary embodiment, the terminal draws a moving track according to coordinate information of a touch point on an Overlay layer, and the drawing process includes:
and the terminal draws a moving track by using a third-order Bezier curve according to the coordinate information of the touch point on the Overlay layer.
In an exemplary embodiment, a third order bezier curve may be plotted in real time to the coordinate information of the touch point, as opposed to a second order bezier curve, which adds a predicted point, thereby making the trace plot more accurate.
In one illustrative example, when the terminal is in a system that includes other terminals in addition to itself, the touch movement event originates from the terminal itself or from other terminals in the system.
In an exemplary embodiment, when the terminal is in a system including other terminals besides the terminal itself, and the touch movement event is originated from other terminals in the system, the method further includes:
the terminal marks the touch movement event so that the terminal determines that the touch movement event is not a self-generated touch movement event.
In an exemplary embodiment, the touch movement event is originated from the terminal itself, and when the terminal is in a system including other terminals besides the terminal itself, the terminal receives the touch movement event for drawing the movement track by using its local frame layer, the method further includes:
the terminal transmits the touch movement event to other terminals in the system.
In an exemplary embodiment, if the terminal is in a video conference system, the terminal sends the touch movement event to other terminals in the system, so that the other terminals receive the touch movement event for drawing the movement track by using their own local frame layer, and when receiving a touch movement event, the terminal draws the movement track according to the coordinate information of the touch point, thereby drawing the movement track in real time.
According to the method for drawing the moving track provided by the embodiment of the invention, the terminal receives the touch moving event for drawing the moving track by using the local frame layer of the terminal, and when the touch moving event is received, the terminal draws the moving track according to the coordinate information of the touch point included in the touch moving event, so that the moving track is drawn immediately, the time delay for drawing the moving track is greatly shortened, and the user experience is improved.
An embodiment of the present invention further provides a terminal, as shown in fig. 2, where the terminal 2 includes:
a receiving module 21, configured to receive, by using a local framework layer of the terminal, a touch movement event for drawing a movement trajectory; wherein the touch movement event includes coordinate information of a touch point.
And the processing module 22 is configured to draw a movement track according to the coordinate information of the touch point every time a touch movement event is received.
In an exemplary embodiment, the processing module 22 is specifically configured to perform movement trace drawing on the Overlay layer according to the coordinate information of the touch point, and perform drawing by using a third-order bezier curve.
In an illustrative example, when the terminal is in a system that includes other terminals in addition to itself, the touch movement event originates from the terminal itself or other terminals in the system.
In an illustrative example, when the touch movement event originates from the terminal itself and when the terminal is in a system that includes other terminals in addition to itself, the processing module 22 is further configured to send the touch movement event to other terminals in the system.
According to the terminal provided by the embodiment of the invention, the local frame layer of the terminal is utilized to receive the touch moving event for drawing the moving track, and when a touch moving event is received, the terminal draws the moving track according to the coordinate information of the touch point included in the touch moving event, so that the moving track is drawn immediately, the drawing time delay of the moving track is greatly shortened, and the user experience is improved.
In practical applications, the receiving module 21 and the Processing module 22 are implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like, which are located in the terminal.
An embodiment of the present invention further provides a device for drawing a movement trajectory, as shown in fig. 3, where the device 3 for drawing a movement trajectory includes: a touch receiving module 31, a touch processing module 32 and a track display module 33.
The touch receiving module 31 is configured to receive a touch event of an affiliated terminal or a touch event sent by a non-affiliated terminal.
A touch processing module 32 for processing the touch event and transmitting to the trace display module 33,
and a track display module 33, configured to draw coordinate information of the touch point in real time, so as to display a moving track.
In an exemplary example, the touch receiving module 31, the touch processing module 32 and the track displaying module 33 are all started by the Android installation package APK.
The embodiment of the present invention further provides a device for drawing a movement trajectory, including: the system comprises a memory, a processor and a computer program which is stored on the memory and can be run by the processor, wherein the processor executes the computer program to realize the drawing method of the movement track in any one of the above embodiments.
The embodiment of the invention also provides a computer-readable storage medium, wherein a computer-executable command is stored on the storage medium, and the computer-executable command is used for executing the drawing method of any one of the movement tracks in the above embodiments.
Although the embodiments of the present invention have been described above, the descriptions are only used for understanding the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims.
Claims (10)
1. A method for drawing a moving track comprises the following steps:
the terminal receives a touch movement event for drawing a movement track by using a local frame layer of the terminal; wherein the touch movement event includes coordinate information of a touch point;
and when a touch movement event is received, the terminal draws a movement track according to the coordinate information of the touch point.
2. The drawing method according to claim 1, wherein the drawing of the movement trajectory by the terminal according to the coordinate information of the touch point comprises:
and the terminal draws the moving track on a display layer Overlay layer according to the coordinate information of the touch point.
3. The drawing method of claim 2, wherein the terminal draws the movement track on the display layer Overlay layer according to the coordinate information of the touch point, and the drawing method comprises the following steps:
and the terminal draws the moving track by a three-order Bezier curve on an Overlay layer according to the coordinate information of the touch point.
4. The rendering method according to claim 1, wherein when the terminal is in a system including other terminals in addition to itself, the touch movement event is originated from the terminal itself or other terminals in the system.
5. The method according to claim 1, wherein when the touch movement event originates from the terminal itself and when the terminal is in a system that includes other terminals besides the terminal itself, the terminal receives the touch movement event for drawing the movement trace by using its local framework layer, further comprising:
and the terminal sends the touch movement event to other terminals in the system.
6. A terminal, comprising:
the receiving module is used for receiving a touch movement event for drawing a movement track by utilizing a local frame layer of the terminal; wherein the touch movement event includes coordinate information of a touch point;
and the processing module is used for drawing a moving track according to the coordinate information of the touch point when a touch moving event is received.
7. A terminal according to claim 6, wherein when the terminal is in a system that includes other terminals in addition to itself, the touch movement event originates from the terminal itself or from other terminals in the system.
8. The terminal according to claim 6, wherein the processing module is specifically configured to draw the movement track according to coordinate information of the touch point on an Overlay layer.
9. An apparatus for drawing a movement trajectory, comprising: a processor and a memory, wherein the memory has stored therein the following commands executable by the processor:
receiving a touch movement event for drawing a movement track by using a local frame layer of a terminal; wherein the touch movement event includes coordinate information of a touch point;
and drawing a moving track according to the coordinate information of the touch point every time a touch moving event is received.
10. A computer-readable storage medium having computer-executable instructions stored thereon for performing the steps of:
receiving a touch movement event for drawing a movement track by using a local frame layer of a terminal; wherein the touch movement event includes coordinate information of a touch point;
and drawing a moving track according to the coordinate information of the touch point every time a touch moving event is received.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724614.7A CN112346581A (en) | 2019-08-07 | 2019-08-07 | Method and device for drawing movement track and computer readable storage medium |
| PCT/CN2020/106228 WO2021023110A1 (en) | 2019-08-07 | 2020-07-31 | Method for drawing movement path, terminal, device, and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724614.7A CN112346581A (en) | 2019-08-07 | 2019-08-07 | Method and device for drawing movement track and computer readable storage medium |
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| Publication Number | Publication Date |
|---|---|
| CN112346581A true CN112346581A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910724614.7A Pending CN112346581A (en) | 2019-08-07 | 2019-08-07 | Method and device for drawing movement track and computer readable storage medium |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112346581A (en) |
| WO (1) | WO2021023110A1 (en) |
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| CN104636049A (en) * | 2011-02-10 | 2015-05-20 | 夏普株式会社 | Display apparatus, operation method thereof, and controller for the display apparatus |
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| CN105807966A (en) * | 2014-12-30 | 2016-07-27 | 鸿合科技有限公司 | Touch screen event acquisition method and apparatus |
| CN106933486A (en) * | 2017-03-13 | 2017-07-07 | 广州视源电子科技股份有限公司 | For the touch-control implementation method and device of Android system |
| CN109101171A (en) * | 2017-06-21 | 2018-12-28 | 北京易真学思教育科技有限公司 | A method of generating sliding trace in touch panel device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7138983B2 (en) * | 2000-01-31 | 2006-11-21 | Canon Kabushiki Kaisha | Method and apparatus for detecting and interpreting path of designated position |
| CN106919316A (en) * | 2017-02-21 | 2017-07-04 | 广州视源电子科技股份有限公司 | For the control method and control device of electronic whiteboard |
| CN108009033B (en) * | 2017-12-25 | 2021-07-13 | 北京奇虎科技有限公司 | Touch simulation method and device and mobile terminal |
-
2019
- 2019-08-07 CN CN201910724614.7A patent/CN112346581A/en active Pending
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2020
- 2020-07-31 WO PCT/CN2020/106228 patent/WO2021023110A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104636049A (en) * | 2011-02-10 | 2015-05-20 | 夏普株式会社 | Display apparatus, operation method thereof, and controller for the display apparatus |
| US20150234522A1 (en) * | 2014-02-19 | 2015-08-20 | Hisense Electric Co., Ltd | Touch event scan method, electronic device and storage medium |
| CN105807966A (en) * | 2014-12-30 | 2016-07-27 | 鸿合科技有限公司 | Touch screen event acquisition method and apparatus |
| CN106933486A (en) * | 2017-03-13 | 2017-07-07 | 广州视源电子科技股份有限公司 | For the touch-control implementation method and device of Android system |
| CN109101171A (en) * | 2017-06-21 | 2018-12-28 | 北京易真学思教育科技有限公司 | A method of generating sliding trace in touch panel device |
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| WO2021023110A1 (en) | 2021-02-11 |
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