CN102999945B - A kind of grid surface region partitioning method for embossment model modeling - Google Patents
A kind of grid surface region partitioning method for embossment model modeling Download PDFInfo
- Publication number
- CN102999945B CN102999945B CN201110272992.XA CN201110272992A CN102999945B CN 102999945 B CN102999945 B CN 102999945B CN 201110272992 A CN201110272992 A CN 201110272992A CN 102999945 B CN102999945 B CN 102999945B
- Authority
- CN
- China
- Prior art keywords
- embossment
- dough sheet
- border
- attribute
- grid surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Image Generation (AREA)
Abstract
The invention discloses a kind of grid surface region partitioning method for embossment model modeling, comprising: traversal is used for the embossment dough sheet of embossment model modeling; Be positioned at embossment border not homonymy embossment dough sheet give different attribute, be positioned at embossment border homonymy embossment dough sheet give same alike result; The embossment dough sheet with same alike result is merged into embossment region.The present invention is by setting corresponding area attribute to the embossment dough sheet being positioned at embossment boundaries on either side, achieve the Region dividing of grid surface, each region independently can be operated, record the modelling operability of embossment model simultaneously, improve the efficiency of embossment modeling and editor.
Description
Technical field
The present invention relates to the Region dividing technology of the grid surface of field of computer aided design, particularly a kind of grid surface region partitioning method for embossment model modeling.
Background technology
Embossment is a kind of sculpture of the concavo-convex image that rises and falls of carve in the plane, is a kind of artistic expression between circular engravure and drawing.Computer carries out embossment modeling, and traditional method is exactly on the rectangular node dot matrix of a sheet of planar, utilizing plane curve or bitmap to calculate the z value knots modification of each net point, by changing the z value of each net point, constructing the shape of embossment.The method of this structure embossment, simple and flexible.The external software supporting relief shape and processing at present, as the Artcam of Britain, the MasterCAMArt etc. of the U.S. represent embossment by the z value of amendment rectangular node.This modeling method, owing to only revising the z value of net point, at precipitous place or boundary, can sawtooth be produced, cause obscure boundary clear, although reduce mesh spacing by overall or local, boundary effect can be made better, but add data volume, and sawtooth is exist all the time, can not meet border and the higher modeling of straight sidewall effect requirements and processing needs.Simultaneously traditional embossment modeling method, does not record the parameter of each moulding mostly, is difficult to any single job before amendment, affects the efficiency of moulding and editor after modeling.
Summary of the invention
The object of the present invention is to provide a kind of grid surface region partitioning method for embossment model modeling, for solving the problem of the grid surface Region dividing in embossment model modeling process.
According to an aspect of the present invention, provide a kind of grid surface region partitioning method for embossment model modeling, comprise the following steps:
A, traversal are used for the embossment dough sheet of embossment model modeling;
B, be positioned at embossment border not homonymy embossment dough sheet give different attribute, be positioned at embossment border homonymy embossment dough sheet give same alike result;
C, the embossment dough sheet with same alike result is merged into embossment region.
Preferably, step B comprises:
B1, search the embossment dough sheet being positioned at side, embossment border and the embossment dough sheet being positioned at embossment border opposite side;
B2, the embossment dough sheet being positioned at side, embossment border found is set identical first area attribute;
B3, the embossment dough sheet being positioned at embossment border opposite side found is set identical second area attribute.
Preferably, step B2 and step B3 is specially:
When traversing i-th embossment dough sheet, judge whether to i-th embossment dough sheet setting regions attribute;
If to i-th embossment dough sheet setting regions attribute, then judged the i-th+1 embossment dough sheet;
If not to i-th embossment dough sheet setting regions attribute, then give described i-th embossment dough sheet setting regions attribute, and travel through by the common limit embossment dough sheet adjacent with i-th embossment dough sheet;
Give the embossment dough sheet setting regions attribute by non-setting regions attribute in the embossment dough sheet adjacent with i-th embossment dough sheet of common limit;
Wherein, i is natural number, and for the limit of all embossment dough sheets of grid surface, the limit belonging to embossment border is embossment limit, and the limit not belonging to embossment border is common limit.
Preferably, before steps A, also comprise:
Discrete processes is carried out to the two-dimensional curve of the relief pattern drawn or input, obtains the end to end straight-line segment corresponding to two-dimensional curve;
Gridding process is carried out to straight-line segment place plane, obtains grid surface and form multiple grid curve unit;
Grid surface carries out tiled process to multiple grid curve unit, obtains embossment dough sheet;
Grid surface is searched for straight-line segment and obtains embossment border.
Preferably, after step c, also comprise:
Respectively corresponding operating is carried out to the embossment region with different attribute on grid surface and generate embossment model.
Preferably, after step c, also comprise:
To grid surface each step operation note embossment history tree on.
Compared with prior art, beneficial effect of the present invention is: the present invention is by setting corresponding area attribute to the embossment dough sheet being positioned at embossment boundaries on either side, achieve the Region dividing of grid surface, each region can independently be operated, record the modelling operability of embossment model simultaneously, improve the efficiency of embossment modeling and editor.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the grid surface region partitioning method for embossment model modeling provided by the invention;
Fig. 2 is the process flow diagram of the embossment dough sheet zoning to grid surface that the embodiment of the present invention provides;
Fig. 3 is used to explain the schematic diagram generated with the embossment of straight sidewall effect;
Fig. 4 is used to the schematic diagram of explanation region segmentation;
Fig. 5 is the implementing procedure figure of the grid surface region partitioning method that provides of the embodiment of the present invention for the embossment model modelling approach of border subregion;
Fig. 6 is used to the schematic diagram explaining the lap removing curve;
Fig. 7 is used to explain the schematic diagram carrying out discrete processes according to action error amount;
Fig. 8 is used to explain the schematic diagram to the process of the straight-line segment intersected after curve discrete;
Fig. 9 is used to explain the schematic diagram for disjoint straight-line segment process after the curve discrete originally intersected;
Figure 10 is used to explain the schematic diagram according to creating mesh lines to fixed step size;
Figure 11 is used to explain that mesh lines and straight-line segment ask for the schematic diagram of intersection point;
The schematic diagram of tiled when Figure 12 is used to explain that the mesh lines of straight-line segment and a grid curve unit only has two intersection points;
Figure 13 is used to the schematic diagram of tiled when there is a multistage straight-line segment explanation grid curve unit inside.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 1 shows the flow process signal of the grid surface region partitioning method for embossment model modeling provided by the invention, as shown in Figure 1:
Step S101, traversal is used for the embossment dough sheet of embossment model modeling.
The process obtaining embossment dough sheet is: carry out discrete processes to the two-dimensional curve of the relief pattern drawn or input, obtain the end to end straight-line segment corresponding to two-dimensional curve, gridding process is carried out to straight-line segment place plane, obtain grid surface and form multiple grid curve unit, grid surface carries out tiled process to multiple grid curve unit, obtains embossment dough sheet.
Wherein, grid surface is searched for the embossment border that straight-line segment obtains for embossment model modeling.
Step S102, be positioned at embossment border not homonymy embossment dough sheet give different attribute, be positioned at embossment border homonymy embossment dough sheet give same alike result.
Search the embossment dough sheet being positioned at side, embossment border and the embossment dough sheet being positioned at embossment border opposite side, the embossment dough sheet being positioned at side, embossment border found is set identical first area attribute, the embossment dough sheet being positioned at embossment border opposite side found is set identical second area attribute.
As follows to the method for embossment dough sheet setting regions attribute: when traversing i-th embossment dough sheet, judge whether to i-th embossment dough sheet setting regions attribute; If to i-th embossment dough sheet setting regions attribute, then judged the i-th+1 embossment dough sheet; If not to i-th embossment dough sheet setting regions attribute, then give i-th embossment dough sheet setting regions attribute, and travel through by the common limit embossment dough sheet adjacent with i-th embossment dough sheet; Give the embossment dough sheet setting regions attribute by non-setting regions attribute in the embossment dough sheet adjacent with i-th embossment dough sheet of common limit; Wherein, i is natural number, and for the limit of all embossment dough sheets of grid surface, the limit belonging to embossment border is embossment limit, and the limit not belonging to embossment border is common limit.
Step S103, is merged into embossment region the embossment dough sheet with same alike result, and carries out corresponding operating generation embossment model to the embossment region with different attribute on grid surface respectively.
After carrying out Region dividing to embossment dough sheet, region segmentation independently can be carried out in each region, to obtain the high-quality details in local.
Meanwhile, to grid surface each step operation note embossment history tree on.
Fig. 2 shows the flow process of the embossment dough sheet zoning to grid surface that the embodiment of the present invention provides, as shown in Figure 2:
Step S201, all embossment dough sheets of order traversal grid surface, judge whether all embossment dough sheets have traveled through, in this way, then termination algorithm; As no, then perform step S202.
Step S202, takes out the i-th+1 embossment dough sheet, and wherein, i is natural number.
Step S203, judges whether i-th dough sheet has divided region, in this way, then goes to step S201; As no, then perform step S204.
Step S204, arranges the area attribute of dough sheet i, stacked to all common limit of dough sheet i.
Step S205, judges whether storehouse is empty, in this way, then goes to step S201; As no, then perform step S206.
Step S206, ejects the common limit e of stack top.
Step S207, judges whether the embossment dough sheet f that the common limit e of stack top connects has divided region, in this way, then goes to step S205, as no, then performs step S208.
Step S208, arranges the area attribute of embossment dough sheet f, and stacked to the common limit of embossment dough sheet f, then performs step S205.
Fig. 3 is used to explain the signal generated with the embossment of straight sidewall effect, as shown in Figure 3, to every bar embossment limit, structure degeneration dough sheet, and with original dough sheet building topology relation, for the embossment limit of whole appearance profile, suppose that two points on it are p1, p2, copy this two points, be designated as pCopy1, pCopy2; Utilize this four points, construct four limit dough sheets, now deteriorate to straight line, when having straight sidewall effect, overlapping point separately.
Fig. 4 is used to the signal of explanation region segmentation, as shown in figure 13, certain region is segmented: the limit traveling through all embossment dough sheets, to the limit belonged in this region, add mid point, following traversal embossment dough sheet, re-starts tiled to the dough sheet added a little, and the last new point according to adding carries out local updating to embossment border.
Fig. 5 shows grid surface region partitioning method that the embodiment of the present invention the provides implementing procedure for the embossment model modelling approach of border subregion, as shown in Figure 5:
Step S501, the two-dimensional curve of rendering model.
Step S502, checks in Drawing of Curve process whether have heavy line, removes the lap of curve.
Step S503, carries out discrete processes to two-dimensional curve.According to action error, the two-dimensional curve of drafting is carried out discrete processes and obtain end to end straight-line segment, for discrete rear crossing straight-line segment, intersection point need be asked for the straight-line segment that these intersect, interrupt straight-line segment in point of intersection and form node, for the curve originally intersected, discrete rear non-intersect, need the node of mobile straight-line segment, make it crossing with contiguous straight-line segment, in point of intersection straight-line segment interrupted and form node, thus forming new straight-line segment.
Step S504, creates uniform rectangular node, forms grid surface, the vertical mesh lines of level is created according to fixed step size, mesh lines joining is for sharing point, and mesh lines and straight-line segment form grid curve unit, i.e. grid and form a grid curve unit by the multi-section-line of this grid.
Step S505, to the Intersection of line segments point after the mesh lines of rectangular node and discrete processes, interrupts straight-line segment in point of intersection and forms node.
Step S506, carries out tiled at each grid curve unit.
Inner at some grid curve unit, the mesh lines of straight-line segment and a grid curve unit only has two intersection points and grid inside does not have straight-line segment node, the tiled method adopted for such grid curve unit is: with the line segment that these two intersection points are linked to be, grid is divided into two convex polygons, adopt moral labor Triangle IDization rule to carry out tiled to two convex polygons to these two convex polygons again, build tri patch.
And there is multistage straight-line segment some grid curve unit inside, for such grid adopt tiled method be: using all straight-line segments in grid as binding side, adopt the moral labor Triangle ID rule of two-dimentional belt restraining to carry out tiled, build tri patch.
The grid curve unit passed through for not having straight-line segment, forms four limit dough sheets by the shared point of grid curve unit.
Step S507, search for discrete after straight-line segment and transfer embossment border to.
Step S508, the embossment dough sheet zoning to grid surface: the embossment dough sheet in grid surface is divided in different regions, makes dough sheet have area attribute.Wherein, adjacent by common limit between two embossment dough sheets, be called that these two embossment dough sheets are communicated with, adjacent by embossment limit between two embossment dough sheets, be called this two embossment dough sheet non-interconnected.All embossment dough sheets of traversal grid surface, from the embossment dough sheet of wherein certain non-setting area attribute, its area attribute is set, using this embossment dough sheet as the 1st embossment dough sheet, find with the 2nd of its connection the embossment dough sheet and arrange and the 1st area attribute that embossment dough sheet is identical to the 2nd embossment dough sheet, and then find the 3rd the embossment dough sheet be communicated with the 2nd embossment dough sheet also to arrange and the 2nd area attribute that embossment dough sheet is identical to the 3rd embossment dough sheet, until find K the embossment dough sheet be communicated with K-1 embossment dough sheet, and the embossment dough sheet be communicated with any one embossment dough sheet in K embossment dough sheet is all till setting regions attribute.So just mark off a region; Similarly, then by the embossment dough sheet of the next one non-setting area attribute, find the embossment dough sheet belonging to and be interconnected in same subregion, complete second subregion, until all embossment dough sheets have divided region.Thus all embossment dough sheet subregions completed grid surface.Wherein, K is natural number.
Behind the embossment dough sheet zoning of grid surface, give different area attributes to each region, as given color attribute, each color represents a region.
Simultaneously, the embossment with straight sidewall effect can be generated for convenience of each region, to every bar embossment limit, structure degeneration dough sheet, and with original dough sheet building topology relation: for the embossment limit of whole appearance profile, copy two points on it, then there are four points, the point of overlap separately, construct four limit dough sheets, occur straight sidewall effect.
Step S509, local mesh subdivision in region, the high-quality details in structure local.
Certain region is segmented: the limit traveling through all embossment dough sheets, to the embossment limit belonging to this region, add mid point, next again embossment dough sheet is traveled through, again tiled is carried out for the tri patch adding mid point, obtains new tri patch, grid subdivision is carried out for the four limit dough sheets adding mid point, obtain new four limit dough sheets, the last new point according to adding carries out local updating to embossment border.
Step S510, operates each region of grid surface respectively, generates required embossment model; For ease of modeling and amendment, the various operations carried out grid surface are all recorded on embossment history tree.
Fig. 6 is used to the signal explaining the lap removing curve, as shown in Figure 6, given registration accuracy T, for the P0 point in curve A, the closest approach P1 point of detection range P0 point in curve B, if the distance of P0 point and P1 point is less than given precision T, then P0 point and P1 point overlap, each point in cyclic search curve A, the point that curve B and curve A meet the condition of coincidence forms lap, coincidence condition is curve B exists be less than given precision T with the distance of the point in curve A, point overlapping with curve B in curve A is deleted one by one, then delete the lap of curve.
Fig. 7 is used to explain the signal carrying out discrete processes according to action error amount, as shown in Figure 7, curve is approached this curve with a series of straight-line segment becomes multi-section-line, and discrete precision action error controls, action error is also called bow high level error, is the ultimate range of the point on curve to straight-line segment.Fig. 7 (a) illustrates the action error of curve and straight-line segment, Fig. 7 (b) is primary curve, Fig. 7 (c) to be action error be 0.025 millimeter discrete after end to end straight-line segment, Fig. 7 (d) to be action error be 0.04 millimeter discrete after end to end straight-line segment.
Fig. 8 is used to the signal of the process explaining the discrete rear straight-line segment to intersecting, as shown in Figure 8, ask for intersection point to the straight-line segment intersected, interrupt straight-line segment and form node in point of intersection, two crossing straight-line segments become four straight-line segments after point of intersection interrupts and forms node.Fig. 8 (a) is discrete rear two crossing straight-line segments, and Fig. 8 (b) asks for intersection point, four straight-line segments formed after point of intersection interrupts and forms node.
Fig. 9 is used to explain the signal for disjoint straight-line segment process after the curve discretization originally intersected, as shown in Figure 9, Fig. 9 (a) is the closed figure that two curves are formed, Fig. 9 (b) is the partial enlarged drawing that this closed figure centre circle lives part, crossing, Fig. 9 (c) be this closed figure discrete after enlarged drawing, can find out that becoming of originally intersecting is non-intersect, now, the end points of mobile straight-line segment makes it crossing with contiguous straight-line segment, as shown in Fig. 9 (d), the end points of mobile straight-line segment, make it crossing with contiguous straight-line segment, then intersection point is asked for, interrupt the straight-line segment of this vicinity and form node.
Figure 10 is used to explain the signal according to creating mesh lines to fixed step size, as shown in Figure 10, horizontal gridlines and vertical mesh lines is created according to fixed step size, mesh lines point of crossing is for sharing point, Figure 10 (a) is step-length is 0.5 millimeter of mesh lines created, and Figure 10 (b) is step-length is 0.25 millimeter of mesh lines created.
Figure 11 is used to explain that mesh lines and straight-line segment ask for the signal of intersection point, as shown in figure 11, when mesh lines is crossing with straight-line segment, asks for intersection point, interrupts straight-line segment and form node in point of intersection.
The signal of tiled when Figure 12 is used to explain that the mesh lines of straight-line segment and a grid curve unit only has two intersection points, as shown in figure 12, Figure 12 (a) is the situation that two intersection points are adjacent, the straight-line segment that two intersection points are linked to be divide into a triangle and a pentagon a grid curve unit, adopts moral labor Triangle IDization rule tiled pentagon.Figure 12 (b) is the situation that two intersection points are relative, and the straight-line segment that two intersection points are linked to be divide into two quadrilaterals grid, adopts moral labor Triangle IDization rule tiled two quadrilaterals.
Figure 13 is used to the signal of tiled when there is a multistage straight-line segment explanation grid curve unit inside, as shown in figure 13, using all straight-line segments in grid curve unit as binding side, the moral labor Triangle IDization rule of two-dimentional belt restraining is adopted to build tri patch, the mesh lines of what Figure 13 (a) represented is straight-line segment and a grid curve unit has the situation of two intersection points, the mesh lines of what Figure 13 (b) represented is straight-line segment and a grid curve unit has the situation of three intersection points, the mesh lines of what Figure 13 (c) represented is straight-line segment and a grid curve unit has the situation of four intersection points.
In sum, the present invention has following technique effect: the present invention is by setting corresponding area attribute to the embossment dough sheet being positioned at embossment boundaries on either side, achieve the Region dividing of grid surface, after grid surface subregion, each region can independent local mesh subdivision, and namely each region can independently operate, and records the modelling operability of embossment model simultaneously, be convenient to modeling and amendment, improve the efficiency of embossment modeling and editor.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (4)
1., for a grid surface region partitioning method for embossment model modeling, it is characterized in that, comprise the following steps:
Steps A, to draw or the two-dimensional curve of relief pattern of input carries out discrete processes, obtain the end to end straight-line segment corresponding to described two-dimensional curve;
Step B, gridding process is carried out to described straight-line segment place plane, obtain grid surface and form multiple grid curve unit;
Step C, on described grid surface, tiled process is carried out to described multiple grid curve unit, obtain embossment dough sheet; And on described grid surface, search for straight-line segment obtain embossment border;
Step D, traversal are used for the embossment dough sheet of embossment model modeling;
Step e, be positioned at embossment border not homonymy embossment dough sheet give different attribute, be positioned at embossment border homonymy embossment dough sheet give same alike result; And
Step F, the embossment dough sheet with same alike result is merged into embossment region;
Step G, to each step operation note of grid surface on embossment history tree.
2. method according to claim 1, is characterized in that, described step e comprises:
Step e 1, search the embossment dough sheet being positioned at side, embossment border and the embossment dough sheet being positioned at embossment border opposite side;
Step e 2, the embossment dough sheet being positioned at side, embossment border found is set identical first area attribute; And
Step e 3, the embossment dough sheet being positioned at embossment border opposite side found is set identical second area attribute.
3. method according to claim 2, is characterized in that, described step e 2 and step e 3 are specially:
When traversing i-th embossment dough sheet, judge whether to described i-th embossment dough sheet setting regions attribute;
If to described i-th embossment dough sheet setting regions attribute, then judged the i-th+1 embossment dough sheet;
If not to described i-th embossment dough sheet setting regions attribute, then give described i-th embossment dough sheet setting regions attribute, and travel through by the common limit embossment dough sheet adjacent with described i-th embossment dough sheet; And
To the embossment dough sheet setting regions attribute of non-setting regions attribute in the described embossment dough sheet adjacent with described i-th embossment dough sheet by common limit;
Wherein, i is natural number, and for the limit of all embossment dough sheets of grid surface, the limit belonging to embossment border is embossment limit, and the limit not belonging to embossment border is common limit.
4. method according to claim 1, is characterized in that, after described step F, also comprises:
Respectively corresponding operating is carried out to the embossment region with different attribute on grid surface and generate embossment model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272992.XA CN102999945B (en) | 2011-09-15 | 2011-09-15 | A kind of grid surface region partitioning method for embossment model modeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272992.XA CN102999945B (en) | 2011-09-15 | 2011-09-15 | A kind of grid surface region partitioning method for embossment model modeling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102999945A CN102999945A (en) | 2013-03-27 |
| CN102999945B true CN102999945B (en) | 2016-01-06 |
Family
ID=47928473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110272992.XA Active CN102999945B (en) | 2011-09-15 | 2011-09-15 | A kind of grid surface region partitioning method for embossment model modeling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102999945B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082739A (en) * | 1992-04-17 | 1994-02-23 | 计算机设计公司 | Generate the system and the two-dimentional curved surface planarization system of two dimension and three-dimension curved surface grid |
| CN101872488A (en) * | 2009-04-27 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Curved surface rendering system and method |
| CN102096948A (en) * | 2011-03-01 | 2011-06-15 | 西安邮电学院 | Meshsing method suitable for graphics hardware |
-
2011
- 2011-09-15 CN CN201110272992.XA patent/CN102999945B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082739A (en) * | 1992-04-17 | 1994-02-23 | 计算机设计公司 | Generate the system and the two-dimentional curved surface planarization system of two dimension and three-dimension curved surface grid |
| CN101872488A (en) * | 2009-04-27 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Curved surface rendering system and method |
| CN102096948A (en) * | 2011-03-01 | 2011-06-15 | 西安邮电学院 | Meshsing method suitable for graphics hardware |
Non-Patent Citations (4)
| Title |
|---|
| 《ThinkDesign的概念设计过程》;李慧;《CAD/CAM与制造业信息化》;20090731(第7期);全文 * |
| 《基于区域划分的刀具方向控制方法》;李炳林等;《中国机械工程》;20100228;第21卷(第4期);全文 * |
| 《曲面细分模式的分类研究》;李继等;《沈阳师范大学学报》;20090131;第27卷(第1期);全文 * |
| 《烤瓷冠基底冠模型重构方法研究》;张翔等;《东南大学学报》;20090731;第25卷(第1期);第2页右栏第3－5段 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102999945A (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Takayama et al. | Sketch-based generation and editing of quad meshes. | |
| Loseille et al. | Unique cavity-based operator and hierarchical domain partitioning for fast parallel generation of anisotropic meshes | |
| CN109377561A (en) | A kind of digital-to-analogue surface mesh generation method based on conformal geometry | |
| CN103559374B (en) | A kind of method carrying out face disintegrated type surface subdivision on plurality of subnets lattice model | |
| JP2010176347A (en) | Shortest path retrieval method and device | |
| CN103136790A (en) | Creating a surface from a plurality of 3d curves | |
| CN102298795A (en) | Three-dimensional segmenting method for STL (Standard Template Library) triangular network model | |
| JP2005038219A (en) | Method for generating volume data from boundary expression data and program therefor | |
| CN103914865A (en) | Groups of faces that form a geometrical pattern | |
| CN104966317A (en) | Automatic three-dimensional modeling method based on contour line of ore body | |
| CN103236088A (en) | Three-dimensional geological structure modeling method and system based on composite grid | |
| CN110033519A (en) | Three-dimensional modeling method, device, system and storage medium based on Implicitly function | |
| Fisher et al. | An algorithm for the construction of intrinsic Delaunay triangulations with applications to digital geometry processing | |
| CN102298787A (en) | Control method and control system for animation object motion | |
| CN102999944B (en) | The embossment model modelling approach of a kind of border subregion | |
| CN108170990B (en) | Curve reference dividing method based on BIM technology | |
| KR101586765B1 (en) | 3 Dimensional Modeling Method for Object Producted through Semiconductor Manufacturing Process | |
| CN102999945B (en) | A kind of grid surface region partitioning method for embossment model modeling | |
| CN102999515B (en) | A kind of method for obtaining embossment model modeling dough sheet | |
| Hossain et al. | Good spanning trees in graph drawing | |
| CN105574903A (en) | Geometric texture synthesis method and system based on GPU (Graphics Processing Unit) acceleration | |
| CN108280292B (en) | BIM technology-based single-side wall pit guiding method for tunnel excavation | |
| CN108280293B (en) | BIM technology-based double-side-wall tunnel excavation unit division method | |
| Guo et al. | Adaptive surface mesh remeshing based on a sphere packing method and a node insertion/deletion method | |
| CN108170988B (en) | Three-step seven-step method for tunnel excavation based on BIM technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190109 Address after: 102308 No. 10 Yongan Road, Shilong Industrial Zone, Mentougou District, Beijing Patentee after: Beijing finishing impression science and technology Group Co., Ltd Address before: Room 1507 and 1508, Tianhangjian Business Building, 47 Fuxing Road, Haidian District, Beijing, 100036 Patentee before: Beijing Enterprising Persons Software Technology Co.,Ltd. |