3D Clothes Simulation Shirring Polygon Alignment
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Solution Overview
Problem
Current 3D virtual clothes simulations inadequately express shirring techniques, resulting in unnatural pleat formations due to the simplification of sewing long fabric on short sewing lines, making it difficult to replicate the real shape of clothes.
Innovation Solution
A method that allows users to set specific areas for shirring in 2D patterns, generating inner lines with regular intervals and aligning polygons along these lines to simulate the shirring effect, thereby enhancing the realism of 3D clothes simulations by aligning polygons with virtual inner lines and removing these lines to perform draping simulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If shirring is simulated by simply sewing long fabric on a short sewing line in 3D virtual clothes simulation, then the simulation process is simple, but the pleats are expressed in an awkward manner and the shape does not match real clothes
Solution Approach 1:
The shirring area is divided into multiple segments by generating inner lines at regular intervals perpendicular to the sewing line. Polygons are then aligned along these inner lines to create multiple pleat sections, transforming a single simple sewing operation into a segmented multi-pleat structure that accurately represents real shirring.
Solution Approach 2:
The invention transitions from a simple 2D sewing line representation to a 3D pleat structure by generating inner lines and aligning polygons along these lines. This dimensional transformation creates realistic pleat formations that extend perpendicular to the sewing line, accurately representing the three-dimensional nature of shirring.
2Manufacturing precision
If the mesh size is reduced to express natural pleat details, then the realism of shirring is improved, but the complexity of the simulation increases
Solution Approach 1:
The invention applies local quality by reducing mesh size specifically in the shirring area where pleat details are needed, while maintaining coarser mesh in other areas. This localized refinement allows natural pleat details to be expressed without unnecessarily increasing the complexity of the entire simulation.
Solution Approach 2:
The inner lines are generated and polygons are aligned along these lines before performing the draping simulation. This preliminary structuring of the mesh in the shirring area prepares the geometry to naturally form pleats during simulation, reducing the need for excessively fine mesh throughout the entire garment.
3Manufacturing precision
If polygons are aligned along inner lines generated on a 2D pattern based on user settings for shirring area, interval, and height, then the shape of clothes matches real shape, but the process complexity increases
Solution Approach 1:
The system automatically generates inner lines at regular intervals and performs polygon alignment based on user settings for shirring area, interval, and height. This automation allows the system to self-configure the complex alignment process without requiring manual intervention, achieving accurate clothes shape while keeping the user interface simple.
Solution Approach 2:
The invention uses user-configurable parameters (shirring area, interval, and height) to control the generation of inner lines and alignment of polygons. By changing these parameters, the system can adapt to different shirring designs and automatically adjust the polygon alignment to achieve the desired accurate shape.
Data Source
AI summary
A method and apparatus for simulating clothes receive a user setting for an area in which shirring is to be expressed in a two-dimensional (2D) pattern of clothes modeled with a mesh including a plurality of polygons, obtain a first line and a second line parallel to the first line from the area based on the user setting, generate inner lines that are perpendicular to at least one of the first line and the second line of the area between the first line and the second line and that have regular intervals, align polygons included in the area of the 2D pattern based on the inner lines, and perform a draping simulation of three-dimensional (3D) clothes corresponding to the 2D pattern in which the shirring is expressed by the aligned polygons.