Method and device for switching 2.5-dimensional visual angle
A viewing angle and switching instruction technology, applied in the field of 2.5-dimensional viewing angle switching, can solve the problems of reducing the user's experience and cannot change the effect of the 2.5-dimensional map display, so as to improve the experience and achieve the effect of continuous change.
Active Publication Date: 2014-07-16
SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING CO LTD
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Problems solved by technology
[0003] In the existing map display, the display style switching from 2D to 2.5D map display can be realized, but the viewing angle used to draw the 2.5D map display in the system is fixed, and the viewing angle cannot be switched according to the viewing angle selected by the user , cannot change the effect of the 2.5-dimensional map display, which reduces the user experience
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[0013] Embodiments of the present invention provide a method and device for switching a 2.5-dimensional viewing angle, which are used to change the map display effect according to the map viewing angle selected by the user when the map is displayed in 2.5 dimensions, so as to improve user experience.
[0014] see figure 1 , is an embodiment of a method for switching a 2.5-dimensional viewing angle according to an embodiment of the present invention, including:
[0015] 101. Receive a viewing angle switching command;
[0016] In the embodiment of the present invention, during the process of using the navigation system, the user can switch the map viewing angle at any time to change the 2.5-dimensional display effect of the map. After the user selects 2.5 as the map viewing angle, the system will receive a viewing angle switching instruction, and the viewing angle switching instruction includes The 2.5-dimensional map viewing angle selected by the user within the preset viewing...
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The embodiment of the invention discloses a method and a device for switching a 2.5-dimensional visual angle, in particular for switching a 2.5-dimensional map visual angle. The method comprises the following steps of: receiving a visual angle switching instruction, wherein the visual angle switching instruction comprises the 2.5-dimensional map visual angle selected by a user in a preset visual angle range; constructing a perspective transformation matrix according to the map visual angle and the length and the width of a screen of a display interface; acquiring a data packet corresponding to the current display interface, wherein the data packet comprises two-dimensional map data corresponding to an object to be drawn in the current display interface; performing perspective transformation on the data packet by using the perspective transformation matrix; and displaying a corresponding 2.5-dimensional map on the current display interface according to data acquired by performing the perspective transformation on the data packet. The embodiment of the invention also discloses a device corresponding to the method. According to the method and the device, the map visual angle can be changed continuously, a display effect of the 2.5-dimensional map is changed according to a selection of a client, and the user experience is improved according to the continuous change of the map visual angle.
Description
technical field [0001] The invention relates to the field of navigation map display, in particular to a method and device for switching 2.5-dimensional viewing angles. Background technique [0002] In the navigation system, map display is a very important function. The existing map display styles include 2D, 2.5D, 3D, etc. 2.5D is a map display between 2D and 3D. Style, can show a three-dimensional image, giving users a relatively far-reaching vision and a very realistic experience. [0003] In the existing map display, the display style switching from 2D to 2.5D map display can be realized, but the viewing angle used to draw the 2.5D map display in the system is fixed, and the viewing angle cannot be switched according to the viewing angle selected by the user , the display effect of the 2.5-dimensional map cannot be changed, which reduces the user experience. Contents of the invention [0004] Embodiments of the present invention provide a method and device for switchi...
Claims
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IPC IPC(8): G01C21/26
Inventor 王军
Owner SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING CO LTD