Method for efficiently generating free curves in 3D modeling

A technology for 3D modeling and curve generation, applied in 2D image generation, 3D modeling, image data processing and other directions, it can solve the problems of free curve model distortion, occupying a lot of resources, affecting the authenticity of core business, etc.

Inactive Publication Date: 2018-11-27
赵慧卿
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Problems solved by technology

[0002] When performing 3D modeling tasks, if the free curve of the object shape is to be as close as possible to the actual radian and smoothness, it needs to consume additional computer resources, and the accumulation of many curved curves will take up a lot of resources and affect the core business of modeling running
The existing technology mostly adopts the broken line approximation method to save as many resources as possible to complete the core business, which causes the distortion of the free curve model and affects the authenticity of the core business

Method used

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  • Method for efficiently generating free curves in 3D modeling
  • Method for efficiently generating free curves in 3D modeling
  • Method for efficiently generating free curves in 3D modeling

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Embodiment Construction

[0069] Reference figure 1 , The present invention is an efficient free curve generation method in three-dimensional modeling. The method includes four generation methods of G1 continuous free curve, G2 continuous free curve, open G2 continuous free curve, and closed G2 continuous free curve:

[0070] (1) Based on the generation of G1 continuous free curves with two determined endpoints, in modeling, when the continuity of the free curves is not high or only the contour needs to be approximated, the free curve generation method of determining the endpoints and tangents of the curve is adopted :

[0071] Such as figure 2 As shown in (a), suppose P 1 , P 2 Are two characteristic points on the target free curve, then the method of generating a G1 continuous free curve based on these two characteristic points is as follows:

[0072] (1) Pass feature point P 1 And P 2 Point as auxiliary line L o : L o (x,y)=a o x+b o y+c o =0;

[0073] (2) Passing feature point P 1 Make auxiliary line L m ...

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Abstract

The invention discloses a method for efficiently generating free curves in 3D modeling. The method comprises: generating G1 continuous free curves according to two determined endpoints; generating G2continuous free curves according to two free curves in core business; generating open G2 continuous free curves; and generating closed G2 continuous free curves in the overall modeling of key structures. The invention can generate a modal of the free curves on the basis of the minimum computer resource occupancy rate, is low in resource occupancy rate, is fast in calculation speed, and is high inmodeling efficiency.

Description

Technical field [0001] The invention belongs to the field of computer graphics processing, and specifically relates to a method for efficiently generating free curves in three-dimensional modeling. Background technique [0002] When performing 3D modeling tasks, if the free curve of the shape of the object wants to be as close to the actual arc and smoothness as possible, additional computer resources are required, and the accumulation of many curved curves will take up a lot of resources and affect the core business of modeling Run. The existing technology mostly adopts the polyline approximation method to save as much resources as possible to complete the core business, which causes the distortion of the free curve model, but affects the authenticity of the core business. Summary of the invention [0003] In order to solve the above problems, the present invention proposes an efficient free-form curve generation method in three-dimensional modeling, which not only guarantees th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T11/20
CPCG06T17/00G06T11/203
Inventor 赵慧卿王慧黄佳敏
Owner 赵慧卿
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