Three-dimensional character loop animation automatic accumulation method

Abstract

The invention discloses a three-dimensional character loop animation automatic accumulation method. The method includes the steps of calculating relative location Qk of a controller Ck corresponding to every portion of a character with an abdomen center point of the character as the origin of a coordinate for a three-dimensional character model completing frame binding; performing spaced sampling along a character movement path S, and calculating the normal Nn and the tangent Tn of a path curve of every sampling point; calculating a rotational transformation matrix Mn between two consecutive sampling points according to the normal Nn and the tangent Tn; calculating a step conversion factor Stepn of the controller Ck corresponding to every portion of the three-dimensional character; calculating displacement and rotation animation data of the controller Ck corresponding to every portion of the character during the movement along the movement path S after taking step accumulation into consideration according to the step conversion factor Stepn. The three-dimensional character loop animation automatic accumulation method provides a quick automatic generation method for common animation of characters moving along paths of three-dimensional animation.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional animation design, and in particular relates to an automatic accumulation method of three-dimensional character cycle animation. Background technique [0002] Three-dimensional animation technology is a new technology that has emerged with the development of computer software and hardware technology in recent years. It can conveniently and quickly produce three-dimensional animation or film and television special effects shots that meet the needs of directors. [0003] The production principle of 3D animation is generally as follows: First, use 3D software (such as 3ds Max, Maya or Houdini) to build a virtual world in the computer; then, add scenes and 3D models such as 3D cartoon characters to the virtual 3D world ; Finally, set the animation curve of the model, the trajectory of the virtual camera and other animation parameters, and render the character animation. [0004] Because 3D a...

AI Technical Summary

Problems solved by technology

[0007] However, just looping will make the character stand still

In addition, in order to make the character's walking, running and other animations not look like mechanical movements, it is necessary to add more detailed changes in the cycle, so that the character's movements are not completely mechanically repeating the actions of the previous cycle during the entire movement process.

At present, 3D animation production tools do not provide a perfect solution, requiring the animator to manually update the position of the character to avoid staying in place, and to manually correct the movement of each part of the character according to the movement path of the character, such as The displacement and angle changes of the two feet are slightly different when moving along the curve

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