A Realization Method of Skeleton Skinning Animation

Abstract

The invention discloses an implementation method of skinned skeletal animation. The implementation method comprises the following steps: A, constructing a skeleton model and a skinned mesh model which constitute a role model; B, determining a skeleton which influences the mesh vertexes on the skinned mesh model, and determining the influence weight according to a geometrical relationship and a physical relationship between the skeleton and the vertexes; C, carrying out calculus of interpolation between each two adjacent key frames according to a key frame sequence of skeleton movement, which is stored in a role model file, and determining new position and new orientation of each skeleton at certain moment; and D, calculating new position and new orientation of each vertex under a world coordinate system according to skeleton index and corresponding influence weight which influence each vertex and are stored in each vertex on the skinned mesh model, and thus achieving skinned skeleton animation. According to the implementation method disclosed by the invention, the joint problem in skeletal animation is solved, the effect is real and vivid, and is more flexible compared with that of vertex animation, and little memory space is occupied while a favorable animation effect is finished; the skinned skeletal animation can be constructed more easily and rapidly.

Description

technical field [0001] The invention relates to the technical field of computer graphics, in particular to a method for realizing skeleton skin animation. Background technique [0002] At present, real-time animation technologies mainly include joint animation and vertex animation (ie, key frame animation). The space occupied by the joint animation file is relatively small, and many complex animation effects can be realized; but its disadvantages are also obvious. One is that the character model is a hierarchical model. To obtain the position of a certain part relative to the world coordinate system, it must be obtained from The root node starts to traverse all the ancestor nodes of this node. The more critical problem is that there are often obvious seams at different joints, which will seriously affect the realism of the model. The character in the vertex animation is composed of a complete mesh model, which makes the character look more realistic, and there will be no se...

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Problems solved by technology

The space occupied by the joint animation file is relatively small, and many complex animation effects can be realized; but its disadvantages are also obvious. One is that the character model is a hierarchical model. To obtain the position of a certain part relative to the world coordinate system, it must be obtained from The root node starts to traverse all the ancestor nodes of this node. The more critical problem is that there are often obvious seams at different joints, which will seriously affect the realism of the model.

The character in the vertex animation is composed of a complete mesh model, which makes the character look more realistic, and there will be no seam problems. The amount of calculation to obtain the position of the mesh vertices of the model in the world coordinate system is also very small. But its disadvantage is that the adaptability of the animation is very weak and inflexible, and because the key frame needs to store all the vertex information of the mesh model, the space occupied by the animation file is particularly large

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