Frame selection method, system and electronic device based on key point ray collision detection
A collision detection and key point technology, which is applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve problems such as the inability to achieve 3D scene circle selection effect, save a lot of redundant calculation, and achieve efficient circle selection. The effect of selecting the effect and improving the execution efficiency
Active Publication Date: 2016-06-29
TCL CORPORATION
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[0004] The technical problem to be solved by the present invention is to provide a frame selection method, system and electronic equipment based on the key point ray collision detection for the above-mentioned defects of the prior art, so as to solve the problem that the existing 2D discriminant algorithm cannot divide the region. The problem of realizing the circle selection effect of the 3D scene
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[0044] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0045] see figure 1 , figure 1 It is a flow chart of the frame selection method based on key point ray collision detection provided by the present invention, comprising the following steps:
[0046] Step S100 , sampling the moving position of the user's operating focus on the screen at a predetermined step, and acquiring a plurality of first collision detection points.
[0047] Wherein, before step S100 is performed, firstly, a predetermined step size of the sampling interval is calculated according to the height and width of the 3D object on the screen. Since the size of a 3D object ...
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The invention discloses a frame selection method, system and electronic equipment based on key point ray collision detection. The method includes: sampling the moving position of the user's operation focus on the screen with a predetermined step length, and obtaining a plurality of first collision detection points ; Obtain a pick-up ray according to the first collision detection point and the origin of the virtual camera; detect whether the pick-up ray intersects with a 3D object, and if so, select the 3D object and render it. The invention not only realizes efficient 3D area circle selection effect, but also optimizes the selection of 3D space ray points, saves a lot of redundant calculations, and improves the execution efficiency of 3D space detection algorithms.
Description
technical field [0001] The invention relates to a frame selection technology of 3D icons, in particular to a frame selection method, system and electronic equipment based on key point ray collision detection. Background technique [0002] In the development of the 3DLauncher scene, sometimes you may encounter the situation of using the mouse to draw lines to circle icons in any irregular closed area. The traditional circle selection technology uses the algorithm of 2D plane rectangular area division. Because the closed area selected by the user is an uncertain convex-convex polygon, the method generally adopted is the parity and evenness discrimination method of plane ray intersection points. Since the elements in the 3DUI scene may be 3D objects or 2D objects, the 2D discrimination algorithm is simply used. , dividing the area cannot realize the circle selection effect of the 3D scene. [0003] Therefore, the prior art still needs to be improved and developed. Contents o...
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IPC IPC(8): G06F3/0346
Inventor 卢伟超李星赵智宝张颖姬锐锋
Owner TCL CORPORATION