| 摘要 |
A method for producing a two-dimensional (2D) animated character sequence is provided. The method includes producing a set of 2D drawings that represent one or more views of the body parts of the character being represented, analyzing an animated sequence of a three-dimensional (3D) armature in order to determine the motion of an animated character in 3D space over time, using a selection operation to determine which particular view of each body part to use to best represent that body part at any particular moment in time in the animated sequence, performing a projection operation for each bone of the armature in order to determine where, on a 2D plane, the selected drawing should be placed in a 2D animation frame, and assembling the selected body part drawings in order to produce the frames of a 2D animated character. |
| 主权项 |
1. A method for producing a 2D animated character sequence comprising:
a. producing a set of 2D drawings or art assets that represent one or more views of each body part of the character being represented, b. performing a computer-implemented production operation to produce multiple frames of said 2D animated character sequence by analyzing a 3D animated sequence of a 3D armature comprised of primary bones in order to determine the motion, position, and orientation of said primary bones of said armature in 3D space over time using a specific virtual camera location in 3D space, said analysis step being carried out for each said primary bone in said 3D armature at each particular moment in time or frame of a 2D animated character sequence, and rendering each 2D frame in said 2D animated character sequence to produce a sequence of frames comprising said 2D animated character sequence, said production operation comprising the following steps,
Step 1. for a primary bone in said 3D armature, performing a computer-implemented selection operation to determine which of a collection of 2D drawings of a body part produced in (a) corresponding to said primary bone in said 3D armature to use to best represent said body part corresponding to said primary bone of said armature being analyzed as viewed from said virtual camera in 3D space at said particular moment in time during said 2D animated character sequence, and repeating this computer-implemented selection process for each said primary bone in said 3D armature for each particular moment of time during said 2D animated character sequence,Step 2. performing a computer-implemented projection operation for said primary bone of said armature being analyzed in order to determine where, on a 2D plane, the 2D drawing representing said body part corresponding to said primary bone being analyzed should be placed, rotated and scaled at said particular moment in time during said 2D animated character sequence, and repeating said computer-implemented projection for each said primary bone in said 3D armature for each particular moment in time in said 2D animated character sequence, andStep 3. performing a computer-implemented ordering operation to determine an order in which to render said 2D drawings comprising the frames of said 2D animated character sequence in order to ensure that body parts that are closer to said virtual camera are rendered after body parts that are further away from said virtual camera, andStep 4. for each said moment in time of said 2D character animated sequence, in a computer-implemented process, rendering all said body part drawings selected in step 1 representing said primary bones in said 3D armature in a rendering plane according to the placement, rotation and scaling information derived in step 2 and the ordering information derived in step 3 so as to generate a frame in said 2D animated character sequence, and repeating said rendering process for each moment in time in said 2D animated character sequence so as to produce a sequence of frames comprising said 2D animated character sequence. |
