CN112329092A - 3D clothing design method, system and device based on computer graphics - Google Patents

3D clothing design method, system and device based on computer graphics Download PDF

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CN112329092A
CN112329092A CN202011343512.XA CN202011343512A CN112329092A CN 112329092 A CN112329092 A CN 112329092A CN 202011343512 A CN202011343512 A CN 202011343512A CN 112329092 A CN112329092 A CN 112329092A
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CN112329092B (en
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武大治
肖洁
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Wuhan Glinsun Intelligent Technology Co ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/10Geometric CAD
    • G06F30/12Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
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    • G06F2111/00Details relating to CAD techniques
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    • G06F2113/00Details relating to the application field
    • G06F2113/12Cloth
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

The invention relates to a3D clothing design method, system and device based on computer graphics, the method includes, make the project file of the template; establishing a mapping relation from a plate to a part; generating plate symmetrical linkage information and key point linkage information; loading the corresponding plate according to the mapping relation; generating an editing control for each key point, editing the corresponding key point, and converting 3D modification into equivalent 2D modification according to key point linkage information; editing the 2D edition according to the symmetrical linkage information; re-gridding the edited 2D plate and rendering the 2D plate into 3D to generate a shape-preserved 3D plate; simulating the 3D plate; and updating the position and the orientation of the editing control in the 3D film. The method and the device can directly display the virtual garment on the 3D interface and modify the virtual garment, the modification is intuitively embodied in the 2D edition, the use is convenient, and the consistency of the modification in the 3D garment and the modification in the 2D edition can be ensured.

Description

3D clothing design method, system and device based on computer graphics
Technical Field
The invention relates to the field of garment design, in particular to a3D garment design method, a system and a device based on computer graphics.
Background
With the progress of science and technology and the development of economy, the clothing industry in China is facing to the structural adjustment, and especially the digitization of clothing is coming and is also receiving more and more attention of people. The technology in which clothing CAD is the core of comparison has been proposed to be widespread. The clothing CAD (Computer AIDED Design) technology, namely the Computer AIDED clothing Design technology, is a comprehensive high-tech technology integrating Computer graphics, databases, network communication and other field knowledge into a whole and is used for realizing the technical development and engineering Design of products. The clothing CAD technology integrates the thought and the technical experience of a designer, and through the powerful calculation function of a computer, the clothing design is more scientific and efficient, and a modernized tool is provided for the clothing designer.
The CAD solves the problems of edition making, code setting and layout of a platemaker in a plate room, but not only the modern plate room work also relates to links such as a process edition list, a pattern, cost and the like, and the extension application is realized by connecting the key data of each technical link of design, edition type and plate with the data of the plate room opened from the top in series and cooperating with the management of product data such as pattern, cost, KPI and the like. Meanwhile, the full-line digital design (style design, layout design and process design) is important product basic data for driving a supply chain. Intelligent manufacturing has achieved high intelligent achievement in the manufacturing ring, but to achieve the intelligence that is more intelligent in the whole line, support of source end data of the digital design (style design, layout design, process design) of the whole line that is more required to be driven by intelligent design, intelligent manufacturing and intelligent commerce needs to be achieved.
As three-dimensional simulation software of clothes, the three-dimensional simulation software needs to restore the clothes manufacturing process and present the three-dimensional effect of the clothes as true as possible. The program comprises related functions of drawing a graph (a plate drawing), sewing simulation, process (open lines, buttons, buttonholes and zippers), detail editing of fabric textures and the like, the functions are more in variety, the existing selection editing mechanism is unreasonable in design and insufficient to meet selection and editing of multiple entity functions from the perspective of experience and rationality, and therefore a selection editing document is drawn. The selection editing function classifies different entities according to functions and needs different selection editing tools to perform selection editing operation. The edition editing belongs to one of the selection editing functions and is provided with an independent tool button.
The existing garment CAD software in the market does not support modification on a3D interface and is automatically embodied in a2D interface, and the existing software method is that 3D is visually modified and displayed, and then corresponding modification is carried out in the 2D edition. The current technology has the problems of inconvenient use and incapability of ensuring that the modification in the 3D clothes and the 2D prints keeps consistent. During the use process, subsequent problems are caused by neglecting subtle differences.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a3D clothing design method, a system and a device based on computer graphics, which can directly display virtual clothing on a3D interface and modify the virtual clothing, and the modifications are intuitively embodied in a2D edition, so that the use is convenient and fast, and the consistency of the modification in the 3D clothing and the 2D edition can be ensured.
The technical scheme for solving the technical problems is as follows: A3D costume designing method based on computer graphics comprises the following steps,
s1, manufacturing a3D basic template and generating a template engineering file;
s2, identifying and marking the parts to which the plates of the 3D basic template belong in the template engineering file, and establishing a mapping relation between the plates and the parts;
s3, identifying and marking key points of the 3D basic template in the template engineering file, and generating layout symmetry linkage information and key point linkage information;
s4, importing the template engineering file, selecting parts connected with the template engineering file according to the body of the 3D basic template, and loading corresponding prints according to the mapping relation;
s5, for the loaded print, generating an editing control for each key point in the 3D basic template, editing the corresponding key point by using the editing control, converting 3D modification into equivalent 2D modification according to the key point linkage information, and generating a corresponding 2D print;
s6, editing the 2D prints by utilizing a2D print editing function according to the symmetrical linkage information, and keeping the stitching relation of the 2D prints;
s7, re-gridding and rendering the edited 2D plate into 3D to generate a conformal 3D plate;
s8, simulating the conformal 3D plate;
and S9, updating the position and the orientation of the editing control in the 3D edition according to the position change of the 3D edition due to the simulation.
Based on the 3D clothing design method based on the computer graphics, the invention also provides a3D clothing design system based on the computer graphics.
A3D dress designing system based on computer graphics comprises the following modules,
the template engineering file generation module is used for manufacturing a3D basic template and generating a template engineering file;
the mapping relation establishing module is used for identifying and marking the part to which the plate of the 3D basic template belongs in the template engineering file and establishing the mapping relation between the plate and the part;
the linkage information generation module is used for identifying and marking key points of the 3D basic template in the template engineering file and generating plate symmetrical linkage information and key point linkage information;
the plate loading module is used for importing the template engineering file, selecting a part connected with the template engineering file according to the body of the 3D basic template, and loading a corresponding plate according to the mapping relation;
the 3D modification equivalent 2D modification module is used for generating an editing control for each key point in the 3D basic template for the loaded plate, editing the corresponding key point by using the editing control, converting the 3D modification into equivalent 2D modification according to the key point linkage information and generating a corresponding 2D plate;
the 2D edition editing module is used for editing the 2D edition by utilizing a2D edition editing function according to the symmetrical linkage information and keeping the stitching relation of the 2D edition;
the 3D plate conformal module is used for re-gridding and rendering the edited 2D plate into 3D to generate a conformal 3D plate;
the 3D film simulation module is used for simulating the conformal 3D film;
and the editing control updating module is used for updating the position and the orientation of the editing control in the 3D film according to the position change of the 3D film caused by simulation.
Based on the 3D clothing design method based on the computer graphics, the invention also provides a3D clothing design device based on the computer graphics.
A3D garment design apparatus based on computer graphics, comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the computer program when running implementing the 3D garment design method as described above.
The invention has the beneficial effects that: by utilizing the 3D clothing design method, the system and the device based on computer graphics, a designer can directly display virtual clothing on a3D interface and modify the virtual clothing, so that the steps of the designer and a platemaker in the manufacturing process are greatly facilitated; by simply dragging the garment in the 3D virtual garment, the modified style can be directly observed, and the subsequent modification can be easily carried out; and the modifications are intuitively embodied in the 2D plate, so the use is convenient, the consistency of the modifications in the 3D clothes and the 2D plate can be ensured, and the plate can be directly provided to a production end for production.
Drawings
FIG. 1 is a flow chart of a3D garment design method based on computer graphics according to the present invention;
fig. 2 is a block diagram of a3D garment design system based on computer graphics according to the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a3D costume designing method based on computer graphics includes the following steps,
s1, manufacturing a3D basic template and generating a template engineering file;
the 3D template adjusting technology starts from a template engineering file, and obtains personalized clothes through a series of edits of a user in a3D view. The template file is a manufactured virtual garment and comprises basic elements of the garment, and the sewing relation of the plate is also processed in advance. The template engineering file should select a basic, classical, strong universality and good expansibility style, and remove personalized and asymmetric elements.
The S1 specifically includes the following steps,
s11, making a basic garment model;
s12, appointing a stitching relation for the basic garment model and stitching the pieces to generate a3D basic template;
and S13, saving the 3D basic template and generating a template engineering file.
S2, identifying and marking the parts to which the plates of the 3D basic template belong in the template engineering file, and establishing a mapping relation between the plates and the parts;
from the designer's perspective, a garment is made up of multiple pieces, such as a shirt including a front, collar, sleeves, cuffs, hem, and the like. From the perspective of a stylist or clothing CAD software, the clothing is formed by sewing a plurality of plates. Generally, each part contains a plurality of slices, and a slice belongs to only one part. There is a one-to-many relationship between parts and plates. The 3D layout function allows the user to selectively load the garment assembly, so a layout-to-part mapping needs to be established. According to the arrangement position of the plate on the 3D human body, the part of the plate is determined.
S3, identifying and marking key points of the 3D basic template in the template engineering file, and generating layout symmetry linkage information and key point linkage information;
wherein, the key points are points capable of marking the clothing contour.
The human body is bilaterally symmetrical, so the garment has high symmetry. When modifying one side of the garment, the other side often needs to be modified by the same modification, depending on symmetry. In addition, points on different plates may be stitched together, they may be multiple different points in 2D, but in 3D they merge into one point, editing one point in 3D is equivalent to editing multiple associated points on a2D plate at the same time. And the transformation rules for these 2D points may not be the same. Although the rules are relatively complex, the rules are determined for a given garment, the template project is preprocessed at present, the information (the plate symmetry linkage information and the key point linkage information) is extracted and recorded into a special file, and the information is loaded together when the template project file is loaded.
S4, importing the template engineering file, selecting parts connected with the template engineering file according to the body of the 3D basic template, and loading corresponding prints according to the mapping relation;
when initially introduced, the garment defaults to only a straight body, and from which the user expands the garment by selecting the part to which it is attached, such as adding a sleeve, collar, hem, etc. After the sleeves are added, the cuff pieces can be further loaded, and so on. In fact, whether loaded or not, these components are present in the template engineering file, and only special processing is performed on the unloaded plate, that is, the unloaded plate is not displayed and does not participate in the simulation.
S5, for the loaded print, generating an editing control for each key point in the 3D basic template, editing the corresponding key point by using the editing control, converting 3D modification into equivalent 2D modification according to the key point linkage information, and generating a corresponding 2D print;
each key point has a fixed adjustment direction, and an editing control is dynamically generated according to the adjustment direction of each key point, for example, for a key point which is only limited to be adjusted in the length direction, a pair of arrow controls which face up and down are generated to indicate that the adjustment direction of the key point is upward (shortened) or downward (lengthened);
the adjustment of the key points in 3D is finally converted into the adjustment of some edges or some corners of the 2D plate, and the modification of the key points into edges or corners is related to the positions of the key points in the garment, for example, when the corners of the fly are stretched downwards, the modified key points are the edges below the fly cutting piece in the 2D plate; according to the key point linkage information, when some edges or some corners in the plate are modified, the associated edges or corners are correspondingly modified;
editing corresponding key points by using an editing control, and converting 3D modification into equivalent 2D modification according to the key point linkage information, wherein the method specifically comprises the following steps: the method comprises the steps of dragging an editing control of a key point, calculating a dragging vector of the key point from an original position to a dragging position according to the dragging distance and direction of the key point in 3D, projecting the dragging vector to the arrow direction of the editing control, obtaining a modification vector of the key point, namely the length and direction of stretching/shortening, feeding the modification vector back to a2D edition, adjusting the 2D edition in the 2D edition according to key point linkage information and the modification vector, achieving the purposes of 3D operation and 2D modification, and generating a corresponding 2D edition.
S6, editing the 2D prints by utilizing a2D print editing function according to the symmetrical linkage information, and keeping the stitching relation of the 2D prints;
designers modify clothes in 3D, the 3D converts the modification into equivalent 2D modification, the plate can be automatically modified in 2D, and finally, the processing result is synchronized to 3D. The 2D main processing functions include adjusting single plates and symmetrical linkage plates, keeping plate stitching relation and the like.
The 2D film editing function mainly comprises two functions of editing points and editing lines. The interaction of the two functions can achieve the purpose of editing and modifying the plate into any style.
The 2D film processing is in symmetrical linkage, namely when designers modify one film, the symmetrical film of the film can be modified correspondingly. For example, when designers modify the length of a left sleeve of a garment, the length of the right sleeve of the garment may follow the corresponding change without requiring the designers to readjust the length of the right sleeve.
After the 2D keeps the stitching relationship, namely the style or the shape of the 2D plate is changed, the stitching relationship between the plates still exists and can be updated in time along with the change of the style or the shape of the plate, and a designer does not need to reestablish the stitching relationship for the modified plate.
S7, re-gridding and rendering the edited 2D plate into 3D to generate a conformal 3D plate;
when the 2D plate is modified, the 2D plate can be rendered in 3D only by re-gridding, and for the simulated clothing plate, the shape and position of the plate in 3D can be maintained after re-gridding, so that the efficiency loss caused by repeated arrangement and simulation is avoided.
Each version has its corresponding 2D grid, the 2D grid is generated during gridding, which is equivalent to the initial state of the 2D version when the 2D version is not simulated, when a certain version A is re-gridded, its 3D grid before re-gridding is set as A3D _0, the 2D grid is set as A2D _0, after re-gridding, its 2D grid is A2D _1, we need to calculate its 3D grid A3D _1 after re-gridding, and then can render;
the S7 specifically includes the following steps,
s71, aligning A2d _0 with A2d _ 1;
in the present invention, only a certain point on the edge of the plate a that is not modified needs to be found, that is, a certain point that is changed can be used as the alignment point, and A2d _1 is translated to a place where A2d _0 is aligned. Assuming that a certain point on the unmodified side in A is v0, its coordinates before re-gridding is pt0 and the coordinates after re-gridding is pt1, then the translation amount is (pt 1-pt 0).
S72, calculating the grid position of any grid point p in A2D _0 in A2D _1 based on the aligned A2D _0 and A2D _1, and calculating the 3D position of the grid point p after re-gridding according to the grid position of the grid point p in A2D _ 0;
assuming that the grid point p is located within the triangle triIdx in A2D _0, let the grid position of the grid point p in A2D _0 be represented by the barycentric coordinates u, v, and w of the triangle, and the three vertex indices of the triangle triIdx are vertex0, vertex1, and vertex2, respectively, then the 3D position of the grid point p after re-gridding is,
pt_p=A3d_0[vertex0]*u+A3d_0[vertex1]*v+A3d_0[vertex2]*w;
when the grid point p is not in any one of the triangles of A2D _0, finding the triangle triedx 0 closest to the grid point p in A2D _0, calculating the barycentric coordinates of the grid point p in the triedx 0, which are denoted by u ', v' and w ', the three vertex indexes of the triangle triedx 0 are vertex 0', vertex1 'and vertex 2', respectively, then the 3D position of the grid point p after being re-gridded is as,
pt_p=A3d_0[vertex0’]*u’+A3d_0[vertex1’]*v’+A3d_0[vertex2’]*w’。
s73, traversing all grid points in A2D _1, obtaining the 3D positions of all grid points in A2D _1 after re-gridding by adopting the method of S72, namely obtaining the 3D grid of the plate A after re-gridding,
s74, traversing each of the 2D plates, and obtaining a3D grid of all the plates in the 2D plates after re-gridding by adopting the method of S71-S73;
and S75, rendering the 3D garment with the 2D prints adjusted in the 3D interface based on the 3D grids of all the prints in the 2D prints after re-meshing.
S8, simulating the conformal 3D plate;
the 3D prints are conformal, only to ensure that the re-produced 3D prints are still in the original position, but the newly created garment will be less realistic in form and will likely interleave with a virtual model or other prints. This time the simulation needs to be rerun to correct these problems. The garment simulation engine needs to have the untangle characteristic to extrude the inserted garment from the human body.
The simulation can solve the problems of the insertion of clothes and human bodies caused by editing and the distortion of 3D shapes of the clothes.
And S9, updating the position and the orientation of the editing control in the 3D edition according to the position change of the 3D edition due to the simulation.
After the position of the 3D film is changed, the position and the orientation of the 3D editing control are required to be updated, and after the step is completed, the single-step 3D film adjusting editing is completed to wait for the user to perform the next editing operation.
Based on the 3D clothing design method based on the computer graphics, the invention also provides a3D clothing design system based on the computer graphics.
As shown in fig. 2, a3D costume designing system based on computer graphics includes the following modules,
the template engineering file generation module is used for manufacturing a3D basic template and generating a template engineering file;
the mapping relation establishing module is used for identifying and marking the part to which the plate of the 3D basic template belongs in the template engineering file and establishing the mapping relation between the plate and the part;
the linkage information generation module is used for identifying and marking key points of the 3D basic template in the template engineering file and generating plate symmetrical linkage information and key point linkage information;
the plate loading module is used for importing the template engineering file, selecting a part connected with the template engineering file according to the body of the 3D basic template, and loading a corresponding plate according to the mapping relation;
the 3D modification equivalent 2D modification module is used for generating an editing control for each key point in the 3D basic template for the loaded plate, editing the corresponding key point by using the editing control, converting the 3D modification into equivalent 2D modification according to the key point linkage information and generating a corresponding 2D plate;
the 2D edition editing module is used for editing the 2D edition by utilizing a2D edition editing function according to the symmetrical linkage information and keeping the stitching relation of the 2D edition;
the 3D plate conformal module is used for re-gridding and rendering the edited 2D plate into 3D to generate a conformal 3D plate;
the 3D film simulation module is used for simulating the conformal 3D film;
and the editing control updating module is used for updating the position and the orientation of the editing control in the 3D film according to the position change of the 3D film caused by simulation.
Based on the 3D clothing design method based on the computer graphics, the invention also provides a3D clothing design device based on the computer graphics.
A3D garment design apparatus based on computer graphics, comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the computer program when running implementing the 3D garment design method as described above.
By utilizing the 3D clothing design method, the system and the device based on computer graphics, a designer can directly display virtual clothing on a3D interface and modify the virtual clothing, so that the steps of the designer and a platemaker in the manufacturing process are greatly facilitated; by simply dragging the garment in the 3D virtual garment, the modified style can be directly observed, and the subsequent modification can be easily carried out; and the modifications are intuitively embodied in the 2D plate, so the use is convenient, the consistency of the modifications in the 3D clothes and the 2D plate can be ensured, and the plate can be directly provided to a production end for production.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A3D clothing design method based on computer graphics is characterized in that: comprises the following steps of (a) carrying out,
s1, manufacturing a3D basic template and generating a template engineering file;
s2, identifying and marking the parts to which the plates of the 3D basic template belong in the template engineering file, and establishing a mapping relation between the plates and the parts;
s3, identifying and marking key points of the 3D basic template in the template engineering file, and generating layout symmetry linkage information and key point linkage information;
s4, importing the template engineering file, selecting parts connected with the template engineering file according to the body of the 3D basic template, and loading corresponding prints according to the mapping relation;
s5, for the loaded print, generating an editing control for each key point in the 3D basic template, editing the corresponding key point by using the editing control, converting 3D modification into equivalent 2D modification according to the key point linkage information, and generating a corresponding 2D print;
s6, editing the 2D prints by utilizing a2D print editing function according to the symmetrical linkage information, and keeping the stitching relation of the 2D prints;
s7, re-gridding and rendering the edited 2D plate into 3D to generate a conformal 3D plate;
s8, simulating the conformal 3D plate;
and S9, updating the position and the orientation of the editing control in the 3D edition according to the position change of the 3D edition due to the simulation.
2. A computer graphics-based 3D garment design method according to claim 1, characterized by: the S1 specifically includes the following steps,
s11, making a basic garment model;
s12, appointing a stitching relation for the basic garment model and stitching the pieces to generate a3D basic template;
and S13, saving the 3D basic template and generating a template engineering file.
3. A computer graphics-based 3D garment design method according to claim 1, characterized by: in S2, there is a one-to-many relationship between the parts and the plates.
4. A computer graphics-based 3D garment design method according to claim 1, characterized by: in S3, the key points are specifically points for marking the contour of the garment.
5. A computer graphics-based 3D garment design method according to claim 1, characterized by: in S5, each of the key points has a fixed adjustment direction, and an editing control in the form of an arrow is generated according to the adjustment direction of the key point;
editing the corresponding key points by using the editing control, converting the 3D modification into equivalent 2D modification according to the key point linkage information,
the method comprises the steps of dragging an editing control of a key point, calculating a dragging vector of the key point from an original position to a dragging position according to the dragging distance and direction of the key point in 3D, projecting the dragging vector to the arrow direction of the editing control to obtain a modification vector of the key point, feeding the modification vector back to a2D edition, adjusting the 2D edition in the 2D edition according to key point linkage information and the modification vector to achieve the purposes of 3D operation and 2D modification, and generating a corresponding 2D edition.
6. A computer graphics-based 3D garment design method according to claim 1, characterized by: in S6, the 2D film editing function includes two functions of an edit point and an edit line;
the stitching relationship of the 2D plates is maintained specifically, after the style or shape of the 2D plates is changed, the stitching relationship between the plates still exists and is updated in time along with the change of the style or shape of the plates.
7. A computer graphics-based 3D garment design method according to any of claims 1 to 6, characterized in that: each of the 2D plates is provided with a corresponding 2D grid and a corresponding 3D grid before re-gridding; assuming that the plate A is any one of the 2D plates, respectively setting A2D grid and A3D grid of the plate A before re-gridding as A2D _0 and A3D _0, and setting the 2D grid of the plate A after re-gridding as A2D _ 1;
the S7 specifically includes the following steps,
s71, aligning A2d _0 with A2d _ 1;
s72, calculating the grid position of any grid point p in A2D _0 in A2D _1 based on the aligned A2D _0 and A2D _1, and calculating the 3D position of the grid point p after re-gridding according to the grid position of the grid point p in A2D _ 0;
s73, traversing all grid points in A2D _1, obtaining the 3D positions of all grid points in A2D _1 after re-gridding by adopting the method of S72, namely obtaining the 3D grid of the plate A after re-gridding,
s74, traversing each of the 2D plates, and obtaining a3D grid of all the plates in the 2D plates after re-gridding by adopting the method of S71-S73;
and S75, rendering the 3D garment with the 2D prints adjusted in the 3D interface based on the 3D grids of all the prints in the 2D prints after re-meshing.
8. A computer graphics-based 3D garment design method according to claim 7, wherein: in the S72, assuming that the grid point p is located in the triangle triIdx in A2D _0, the grid position of the grid point p in A2D _0 is represented by the barycentric coordinates u, v, and w of the triangle, and the three vertex indexes of the triangle triIdx are vertex0, vertex1, and vertex2, respectively, then the 3D position of the grid point p after re-gridding is,
pt_p=A3d_0[vertex0]*u+A3d_0[vertex1]*v+A3d_0[vertex2]*w;
when the grid point p is not in any one of the triangles of A2D _0, finding the triangle triedx 0 closest to the grid point p in A2D _0, calculating the barycentric coordinates of the grid point p in the triedx 0, which are denoted by u ', v' and w ', the three vertex indexes of the triangle triedx 0 are vertex 0', vertex1 'and vertex 2', respectively, then the 3D position of the grid point p after being re-gridded is as,
pt_p=A3d_0[vertex0’]*u’+A3d_0[vertex1’]*v’+A3d_0[vertex2’]*w’。
9. A3D dress designing system based on computer graphics is characterized in that: comprises the following modules which are used for realizing the functions of the system,
the template engineering file generation module is used for manufacturing a3D basic template and generating a template engineering file;
the mapping relation establishing module is used for identifying and marking the part to which the plate of the 3D basic template belongs in the template engineering file and establishing the mapping relation between the plate and the part;
the linkage information generation module is used for identifying and marking key points of the 3D basic template in the template engineering file and generating plate symmetrical linkage information and key point linkage information;
the plate loading module is used for importing the template engineering file, selecting a part connected with the template engineering file according to the body of the 3D basic template, and loading a corresponding plate according to the mapping relation;
the 3D modification equivalent 2D modification module is used for generating an editing control for each key point in the 3D basic template for the loaded plate, editing the corresponding key point by using the editing control, converting the 3D modification into equivalent 2D modification according to the key point linkage information and generating a corresponding 2D plate;
the 2D edition editing module is used for editing the 2D edition by utilizing a2D edition editing function according to the symmetrical linkage information and keeping the stitching relation of the 2D edition;
the 3D plate conformal module is used for re-gridding and rendering the edited 2D plate into 3D to generate a conformal 3D plate;
the 3D film simulation module is used for simulating the conformal 3D film;
and the editing control updating module is used for updating the position and the orientation of the editing control in the 3D film according to the position change of the 3D film caused by simulation.
10. A3D dress designing device based on computer graphics, its characterized in that: comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the computer program when executed implementing the 3D garment design method according to any one of claims 1 to 8.
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