A 3D Model Stakeout Method Based on Computer Geometric Offset Algorithm

A geometric offset and computer technology, applied in the field of 3D model lofting based on the computer geometric offset algorithm, can solve the problem of high cost of optimization processing, and achieve the effect of reducing the amount of calculation, 3D grid or 2D grid

Active Publication Date: 2022-08-02
JIANGSU UNIV
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Problems solved by technology

This optimization is often expensive

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  • A 3D Model Stakeout Method Based on Computer Geometric Offset Algorithm
  • A 3D Model Stakeout Method Based on Computer Geometric Offset Algorithm
  • A 3D Model Stakeout Method Based on Computer Geometric Offset Algorithm

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Embodiment Construction

[0085] The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0086] The 3D model lofting method based on the computer geometric offset algorithm according to the present invention comprises the following steps:

[0087] (1) According to hardware device input / interaction with other software, a cross-sectional polyline with M vertices and a polyline to be offset are obtained;

[0088] (2) Obtain an initial offset vector group whose length is equal to the number of vertices M according to the cross-sectional polyline and the first vertex of the polyline to be offset, and the specific implementation of step (2) is as follows:

[0089] (21) Declare the counter k=0, and set the coordinate of the first vertex of the polyline to be offset as p0;

[0090] (22) Obtain the coordinate p of the k+1th vertex of the cross-section polyline;

[0091] (23) assigning the k+1th element of the offset vector group as a vect...

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Abstract

The invention discloses a 3D model staking method based on a computer geometric offset algorithm, comprising the following steps: (1) according to hardware device input / interaction with other software, obtain a cross-sectional polyline with M vertices and a to-be-offset line Polyline; (2) According to the cross-section polyline and the first vertex of the polyline to be offset, obtain the initial offset vector group whose length is equal to the number of vertices M; (3) Use the offset algorithm to obtain the corresponding M vertex in the cross-section polyline respectively. M offset polylines, M offset polylines constitute a polyline group; (4) use the offset polylines and the polylines to be offset to generate triangular patch data; (5) use the triangular patch data to mesh to generate a 3D model. The invention overcomes the overlapping problem formed by the expansion operation of the input polyline, and reduces the amount of calculation; the invention can not only be used to generate loft grids, but also can be used as any grid generation calculation scheme, so that the generated 3D grids or 2D grids can be generated. Grid is better.

Description

technical field [0001] The invention relates to the field of computer graphics, 3D modeling and game animation, and in particular to a 3D model lofting method based on a computer geometric offset algorithm. Background technique [0002] Common animation generation methods include skinning animation and lofting technology. [0003] The two core pieces of data in skinned animation are bones and models. Skeletal data describes the parent-child relationship for subsequent pose freeze and animation production; model data describes a static object that wants to drive it. The artist will configure everything in the model data, including the image of the object described by the model, the number of bones that drive the model, and the description of the effect of the drive. The animation software generates the position sequence of the model's bones, and interpolates them to obtain a coherent skeletal animation. Skeletal animation will use bone binding and deformation weight data t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/20
CPCG06T11/203
Inventor 刘梦祈赵岩
Owner JIANGSU UNIV
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