CN106951624B - A kind of cable-assembly virtual design wiring space preprocess method - Google Patents

A kind of cable-assembly virtual design wiring space preprocess method Download PDF

Info

Publication number
CN106951624B
CN106951624B CN201710151120.5A CN201710151120A CN106951624B CN 106951624 B CN106951624 B CN 106951624B CN 201710151120 A CN201710151120 A CN 201710151120A CN 106951624 B CN106951624 B CN 106951624B
Authority
CN
China
Prior art keywords
point
plane
equation
coordinate
space
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
Application number
CN201710151120.5A
Other languages
Chinese (zh)
Other versions
CN106951624A (en
Inventor
张丹
杜海遥
展阔杰
左敦稳
徐锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing University of Aeronautics and Astronautics
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201710151120.5A priority Critical patent/CN106951624B/en
Publication of CN106951624A publication Critical patent/CN106951624A/en
Application granted granted Critical
Publication of CN106951624B publication Critical patent/CN106951624B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2113/00—Details relating to the application field
    • G06F2113/16—Cables, cable trees or wire harnesses

Abstract

A kind of space preprocess method for cable-assembly self routing, it is characterized in that firstly generating a series of space lattice divisional planes, secondly, the spatial discrete points with different attribute are generated by mesh segmentation face, and spatial discrete points and its information classification are stored, pretreated wiring space is made of discrete point.Preprocess method of the present invention is easy to operate, the wiring space being made of spatial discrete points generated, have the characteristics that easy to operate, wiring technique is good, data volume is small, the efficiency of cable-assembly Automated Design algorithm can be improved, and can satisfy the craftsmanship requirement of cable-assembly design.Meet the algorithm requirements that cable self routing designs in three-dimensional virtual environment.

Description

A kind of cable-assembly virtual design wiring space preprocess method
Technical field
The invention belongs to field of computer aided design, especially a kind of wiring space table of cable-assembly virtual design Show method and generation method, which is suitable for path and the structural planning of cable-assembly, and algorithm for design can be improved The validity of efficiency and design result, specifically a kind of wiring space pretreatment side of cable-assembly virtual design Method.
Background technique
The design of cable-assembly includes the design of cable trails and the design of cable-assembly topological structure under virtual environment.Closely Nian Lai is much by way of algorithm, in use algorithm to cable-assembly to the design of cable-assembly under virtual environment Before design, first has to pre-process entire wiring environment, generate the wiring space identified for algorithm, and and pretreated Wiring space is also required to consider the actual process requirement of wiring.
The spatial spreading of usual wiring environment is using uniformly discrete method, using equally distributed grid to wiring Space is divided, obtained discrete point equidistant arrangement on XYZ axis, then by determining various discrete point, according to The position of discrete point in actual products assigns its corresponding process attribute.The advantages of this discrete method is easy to operate, but It is not account for actual product itself in departure process, has ignored cable in wiring technique and need the requirement laid along outer wall, The discrete discrete point that obtains only a small number of just on the outer wall that cable needs to lay, may will affect the calculated cable of algorithm The application effect of component design result in practice.
For the shortcoming of uniform discrete space model, domestic and foreign scholars propose a variety of preprocess methods.It is with good grounds The position of assembling assembly carries out macro-plan to routing path and establishes wiring major trunk roads, although this method is easy, wiring topology The precision of diameter planning is not high enough, is detailed in document: a kind of three towards complete electronic set of Liu Zhenyu, Zhou Dejian, Wu Zhaohua, Li Chunquan It ties up Routing Algorithm research and realizes [J] electronics manufacturing engineering, 2010,31 (1): 6-25；Have and utilizes chaos grid pre-processing model As wiring space, this method pretreatment when can relatively reduce it is discrete after put quantity, but final discrete point need by Iterative calculation show that calculating process is complex, is detailed in document: Fu Yili, Feng Haibo, Sun Jianxun, Ma Yulin are calculated based on chaos The electronic product auto-routing of method studies [J] computer integrated manufacturing system, 2007,13 (3): 497-510.
External aspect, Liu Q and Wang C. are proposed a kind of based on product model when studying circuit design The grid dividing method of itself is carried out grid dividing to space with plane where all outer surfaces of product component model, is obtained with this Discrete point heterogeneous, but the discrete point substantial amounts being achieved in that are obtained, the requirement to storage is very high, it is detailed in document: Liu Q, Wang C.A discrete particle swarm optimization algorithm for rectilinear Branch pipe routing [J] .Assembly Automation, 2011,31 (4): 363-368.Yanfeng Qu and Dan Jiang et al. is improved on this basis, has cast out the unwanted point in part in discrete point, reduce after spatial spreading from The quantity of scatterplot.But since cable is different from pipeline, pipeline path is generally-straight or forms right angle, but cable is as flexible body Its path shape is changeable, therefore although this method reduces discrete point quantity, but is not particularly suited for the discrete of wiring environment, is detailed in Document: Qu Y, Jiang D, Yang Q.Branch pipe routing based on 3D connection graph and concurrent ant colony optimization algorithm[J].Journal of Intelligent Manufacturing,2016:1-11.
Cable-assembly is designed in three-dimensional virtual environment at present, there are no a kind of more complete and easy sides Method pre-processes wiring space, obtains that the wiring sky that virtual design requires and is able to satisfy actual process requirement can either be met Between.
Summary of the invention
The purpose of the present invention is for being at present designed in three-dimensional virtual environment to cable-assembly, there are no one kind compared with Wiring space is pre-processed for complete and easy method, virtual design can either be met by, which obtaining, requires and be able to satisfy reality The problem of wiring space that border technique requires, a kind of wiring space preprocess method of cable-assembly virtual design is designed, is Electronic product cable-assembly parametric modeling provides parameterized model, and by reading and the parameter letter in processing parameter model Breath carries out cable-assembly Geometric Modeling using CREO secondary development tool PRO/TOOLKIT.
The technical scheme is that
A series of a kind of space preprocess method for cable-assembly self routing, it is characterized in that firstly generating space networks Lattice divisional plane, secondly, generating the spatial discrete points with different attribute by mesh segmentation face；Finally, being made of pre- place discrete point Wiring space after reason.
The space lattice divisional plane generation method the following steps are included:
Step 1: input will carry out the electronic product three-dimensional CAD entire assembly model of wires design, establish the base for wiring Conventional coordinates；
Step 2: the OBB bounding box of each component in Product Assembly body Model is established using second development interface, and acquires packet Plane equation of the plane under the frame of reference, the side for indicating each outer surface is acquired according to plane equation where enclosing box outer surfac The equation group that journey group and expression OBB bounding box are taken up space.
Step 3: acquiring 12 ribs of OBB bounding box according to outer surface plane equation calculation, screens parallel for reference axis Straight line linear equation where rib simultaneously acquires, finds out that every straight line institute is parallel with coordinate plane in the planes to be put down according to linear equation Face equation,
Step 4: coordinate of all of the port position under the frame of reference in model is obtained, and finds out and passes through port position And the plane parallel with coordinate plane, record plane equation；
Step 5: screening plane equation acquired in step 3 and step 4, obtains all unduplicated flat Face equation, these planes are space lattice divisional plane.
The acquisition methods of the spatial discrete points the following steps are included:
Step 1: the intersection point intersected in all mesh segmentation faces is acquired according to all mesh segmentation facial plane equations and is sat Mark；
Step 2: it according to mesh segmentation face equation and component OBB bounding box, acquires in mesh segmentation face and OBB bounding box The not intersecting point coordinate that the outer surface parallel with coordinate plane is intersected；
Step 3: according to the point obtained in step 1 and step 2, all different points are filtered out；According to the seat of each point It is marked with and equation group that model OBB bounding box is taken up space and its outer surface equation group judges position of each point in component model It sets, and assigns each point different attribute values according to its present position difference, the point being suspended in wiring environment is suspension point, attribute Value is 1, is barrier point in the point of component internal, and attribute value 2, the point on component OBB bounding box surface is surface point, wherein with The point that port position is overlapped is port point, and it is 4 that attribute value 3, which is noise spot attribute value in the point of interference source assembly surface, remaining Point is general point, attribute value 5.These points are the spatial discrete points of wiring space after composition pretreatment.
With the storage of xls form document format, discrete point is divided into two form documents and stores the spatial discrete points, and one In the intersection point that save mesh divisional plane intersects i.e. regular point, save mesh divisional plane and OBB bounding box not with coordinate The intersection point i.e. irregular point that the parallel outer surface of plane is intersected.The information of regular point storage includes: that regular point is sat in benchmark Coordinate under mark system, the attribute value of regular point, the quantity of adjacent irregular point and in irregular point table around regular point Number.The information of irregular point storage includes: coordinate of the irregular point under the frame of reference, adjacent non-around irregular point The quantity of regular point and the number in irregular point table, the equation in six adjacent mesh segmentation faces around irregular point.
The beneficial effects of the present invention are:
Preprocess method of the invention is easy to operate, the wiring space of generation being made of spatial discrete points, has operation Simply, the features such as wiring technique is good, data volume is small can be improved the efficiency of cable-assembly Automated Design algorithm, and can expire The craftsmanship requirement of sufficient cable-assembly design.The algorithm requirements that cable self routing designs in three-dimensional virtual environment are met, both The wiring space that virtual design requires and is able to satisfy actual process requirement can be met.
Detailed description of the invention
Fig. 1 is wait be routed electromechanical product model.
Fig. 2 is that the OBB of product model component surrounds BOX Model.
Fig. 3 is the mesh segmentation face generated.
Fig. 4 is the intersection point that mesh segmentation face is intersected.
Fig. 5 is mesh segmentation face and the outer surface parallel with coordinate plane is not intersected in OBB bounding box.
Fig. 6 is the pretreated wiring space being made of discrete point.
Fig. 7 is the classification of discrete point.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As shown in figs. 1-7.
A kind of space preprocess method for cable-assembly self routing firstly generates a series of space lattice segmentations Face, secondly, generating the spatial discrete points with different attribute by mesh segmentation face, spatial discrete points are with xls form document format Storage, discrete point are divided into two form documents and store, the intersection point i.e. regular point that a save mesh divisional plane intersects, and one Save mesh divisional plane and the intersection point i.e. irregular point that outer surface parallel with coordinate plane is not intersected in OBB bounding box. The information of regular point storage includes: coordinate of the regular point under the frame of reference, the attribute value of regular point, adjacent around regular point Irregular point quantity and the number in irregular point table.The information of irregular point storage includes: irregular point in base Coordinate under conventional coordinates, the quantity and the number in irregular point table of adjacent irregular point, non-rule around irregular point Then put the equation in six adjacent mesh segmentation faces around；Finally, being made of pretreated wiring space discrete point.
Wherein: space lattice divisional plane generation method the following steps are included:
Step 1: input will carry out the electronic product three-dimensional CAD entire assembly model of wires design, establish the base for wiring Conventional coordinates；
Step 2: the OBB bounding box of each component in Product Assembly body Model is established using second development interface, and acquires packet Plane equation of the plane under the frame of reference, the side for indicating each outer surface is acquired according to plane equation where enclosing box outer surfac The equation group that journey group and expression OBB bounding box are taken up space.
Step 3: acquiring 12 ribs of OBB bounding box according to outer surface plane equation calculation, screens parallel for reference axis Straight line linear equation where rib simultaneously acquires, finds out that every straight line institute is parallel with coordinate plane in the planes to be put down according to linear equation Face equation,
Step 4: coordinate of all of the port position under the frame of reference in model is obtained, and finds out and passes through port position And the plane parallel with coordinate plane, record plane equation；
Step 5: screening plane equation acquired in step 3 and step 4, obtains all unduplicated flat Face equation, these planes are space lattice divisional plane.
The acquisition methods of spatial discrete points the following steps are included:
Step 1: the intersection point intersected in all mesh segmentation faces is acquired according to all mesh segmentation facial plane equations and is sat Mark；
Step 2: it according to mesh segmentation face equation and component OBB bounding box, acquires in mesh segmentation face and OBB bounding box The not intersecting point coordinate that the outer surface parallel with coordinate plane is intersected；
Step 3: according to the point obtained in step 1 and step 2, all different points are filtered out；According to the seat of each point It is marked with and equation group that model OBB bounding box is taken up space and its outer surface equation group judges position of each point in component model It sets, and assigns each point different attribute values according to its present position difference, the point being suspended in wiring environment is suspension point, attribute Value is 1, is barrier point in the point of component internal, and attribute value 2, the point on component OBB bounding box surface is surface point, wherein with The point that port position is overlapped is port point, and it is 4 that attribute value 3, which is noise spot attribute value in the point of interference source assembly surface, remaining Point is general point, attribute value 5.These points are the spatial discrete points of wiring space after composition pretreatment.
Details are as follows:
A kind of space preprocess method for cable-assembly self routing, is first directed to the threedimensional model to place-and-route product As shown in Figure 1, establishing frame of reference CS0.The OBB bounding box of all components in product is obtained by way of secondary development, The OBB bounding box of two parts is as shown in Figure 2 in the product.And it acquires and surrounds box outer surfac place plane under the frame of reference Plane equation, the equation group that indicates each outer surface is acquired according to plane equation and indicates that OBB bounding box is taken up space Equation group.
Secondly, surrounding linear equation where box outer surfac equation finds out 12 ribs of each component bounding box, screening according to OBB For the parallel rib of reference axis, and finding out its place plane equation parallel with coordinate plane according to linear equation is ax+by+cz =d.Each outer surface of bounding box can indicate by an equation group, such as:
a1x+b1y+c1z<d1
a2x+b2y+c2z<d2
a3x+b3y+c3z<d3
a4x+b4y+c4z<d4
Ax+by+cz=d
OBB bounding box, which takes up space, to be indicated by equation group, such as:
a1x+b1y+c1z<d1
a2x+b2y+c2z<d2
a3x+b3y+c3z<d3
a4x+b4y+c4z<d4
ax+by+cz<d
Obtain model in coordinate of all of the port position under the frame of reference, and find out by port position and with 3 3 parallel planes of coordinate plane, record plane equation.
Finally, screening to the plane of all acquisitions, these planes are the pretreated space networks in wiring environment space Lattice divisional plane, it is as shown in Figure 3 in a model.
Spatial discrete points are determined according to the mesh segmentation face of acquisition and defendance box.Spatial discrete points are divided into two classes, a kind of Intersect to obtain by each divisional plane, another kind of point is by not parallel with coordinate plane outer in divisional plane and component model OBB bounding box Intersect to obtain in surface.
Spatial discrete points arrived that divisional plane intersects with divisional plane are and vertical as shown in figure 4, three divisional planes are vertical two-by-two In different reference axis, when the equation of three divisional planes is x=a, when y=b, z=c, this is sat by the discrete point intersected Mark is (a, b, c).In wiring space, there are j, k respectively perpendicular to the divisional plane of 3 reference axis, at l, is intersected by divisional plane Obtained discrete point shares j*k*l.
Divisional plane with the discrete point that outer surface parallel with coordinate plane is not intersected in OBB bounding box as shown in figure 5, Assuming that plane equation where the outer surface of OBB bounding box is ax+by+zc=d, other two divisional plane equation is x=n, y=m When, the coordinate of intersection gained discrete point is (n, m, (d-na-bm)/c).
Obtained spatial discrete points are screened, obtain and store all unduplicated discrete points, the discrete point finally obtained is such as Shown in Fig. 6.Discrete point is judged according to the equation group that each discrete point coordinate and encirclement box outer surfac and bounding box are taken up space Locating relative position in a model, and the difference of relative position according to locating for it, classify to it and assign its corresponding attribute. The classification of discrete point and attribute value are as shown in Figure 7.It is divided into suspension point, barrier point, three kinds of surface point, the point that suspends is to be suspended in cloth Discrete point in thread environment, not in any assembly surface or inside, barrier point is the point in component internal, and surface point is in component The point on OBB bounding box surface according to the difference of the position and component, and is divided into port point, noise spot and general point, wherein with The point that port is overlapped is port point, is noise spot in the point of interference source such as heat source electromagnet source assembly surface, remaining point is General point.Each corresponding attribute value of point is assigned according to the result of judgement, the point that suspends is 1, and barrier point 2, port point 3 is done Disturbing a little is 4, general point 5.
For spatial discrete points with the storage of xls form document format, discrete point is divided into two form document storages, a storage net It is not flat with coordinate plane in the intersection point that lattice divisional plane intersects i.e. regular point, save mesh divisional plane and OBB bounding box The intersection point that capable outer surface is intersected i.e. irregular point.The information of regular point storage includes: regular point under the frame of reference Coordinate, the attribute value of regular point, the quantity and the number in irregular point table of adjacent irregular point around regular point. The information of irregular point storage includes: coordinate of the irregular point under the frame of reference, adjacent irregular point around irregular point Quantity and the number in irregular point table, the equation in six adjacent mesh segmentation faces around irregular point.Final The regular point table and irregular point table arrived
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.

Claims (2)

1. a series of a kind of space preprocess method for cable-assembly self routing, it is characterized in that firstly generating space lattices Divisional plane, secondly, generating the spatial discrete points with different attribute by mesh segmentation face, and to spatial discrete points and its information point Class is stored；Finally, being made of pretreated wiring space discrete point；The space lattice divisional plane generation method packet Include following steps:
Step 1: input will carry out the electronic product three-dimensional CAD entire assembly model of wires design, establish and sit for the benchmark of wiring Mark system；
Step 2: establishing the OBB bounding box of each component in Product Assembly body Model, and acquires encirclement box outer surfac place plane and exist Plane equation under the frame of reference acquires the equation group for indicating each outer surface according to plane equation and indicates that OBB is surrounded The equation group that box is taken up space；
Step 3: 12 ribs of OBB bounding box are acquired according to outer surface plane equation calculation, filter out the rib parallel with reference axis simultaneously The linear equation of straight line where acquiring, according to linear equation find out every straight line the plane parallel with coordinate plane in the planes Equation；
Step 4: obtain model in coordinate of all of the port position under the frame of reference, and find out by port position and with The parallel plane of coordinate plane records plane equation；
Step 5: screening plane equation acquired in step 3 and step 4, obtains all unduplicated plane sides Journey, these planes are space lattice divisional plane；
The acquisition methods of the spatial discrete points the following steps are included:
Step 1: acquiring the intersecting point coordinate that all mesh segmentation faces are intersected according to all mesh segmentation facial plane equations；
Step 2: according to the outer surface equation group of mesh segmentation face equation and component OBB bounding box, acquiring mesh segmentation face and OBB The intersecting point coordinate that outer surface parallel with coordinate plane is not intersected in bounding box；
Step 3: according to the point obtained in step 1 and step 2, filtering out all different points；According to the coordinate of each point with And the equation group that model OBB bounding box is taken up space judges position of each point in component model with its outer surface equation group, and Assign each point different attribute values according to its present position difference, the point being suspended in wiring environment is suspension point, and attribute value is 1；It is barrier point, attribute value 2 in the point of component internal；Point on component OBB bounding box surface is surface point, wherein with port The point that position is overlapped is port point, and attribute value 3 is noise spot, attribute value 4, remaining point in the point of interference source assembly surface For general point, attribute value 5；These points are the spatial discrete points of wiring space after composition pretreatment.
2. according to the method described in claim 1, it is characterized in that the spatial discrete points with xls form document format storage, Discrete point is divided into two file storages, the intersection point i.e. regular point that a save mesh divisional plane intersects, a save mesh Divisional plane and the intersection point i.e. irregular point that outer surface parallel with coordinate plane is not intersected in OBB bounding box；Regular point is deposited The information of storage includes: coordinate of the regular point under the frame of reference, the attribute value of regular point, adjacent irregular around regular point The quantity and the number in irregular point table of point；The information of irregular point storage includes: irregular point in the frame of reference Under coordinate, the quantity and the number in irregular point table of adjacent irregular point around irregular point, around irregular point The equation in six adjacent mesh segmentation faces.
CN201710151120.5A 2017-03-14 2017-03-14 A kind of cable-assembly virtual design wiring space preprocess method Active CN106951624B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710151120.5A CN106951624B (en) 2017-03-14 2017-03-14 A kind of cable-assembly virtual design wiring space preprocess method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710151120.5A CN106951624B (en) 2017-03-14 2017-03-14 A kind of cable-assembly virtual design wiring space preprocess method

Publications (2)

Publication Number Publication Date
CN106951624A CN106951624A (en) 2017-07-14
CN106951624B true CN106951624B (en) 2019-11-12

Family

ID=59467496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710151120.5A Active CN106951624B (en) 2017-03-14 2017-03-14 A kind of cable-assembly virtual design wiring space preprocess method

Country Status (1)

Country Link
CN (1) CN106951624B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108288303B (en) * 2018-01-19 2021-09-10 东莞市燕秀信息技术有限公司 Automatic checking method, device, equipment and medium for three-dimensional model purchasing specification
CN109871592B (en) * 2019-01-25 2023-04-07 南京航空航天大学 Modeling method of space discretization model for electromechanical product cable laying layout optimization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104361185A (en) * 2014-11-21 2015-02-18 南京航空航天大学 Wire distribution space automatic generating method for cable virtual design
CN104809309A (en) * 2015-05-14 2015-07-29 北京理工大学 Three-dimensional automatic wiring method and device based on rapidly-exploring random tree
CN106099657A (en) * 2016-07-26 2016-11-09 中航光电科技股份有限公司 A kind of cable-assembly wiring method and frock

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8635770B2 (en) * 2010-11-16 2014-01-28 Allan S. Warner Method for insulating wire terminations
US9847628B2 (en) * 2012-12-30 2017-12-19 Zachary Leonid Braunstein Plug and power distribution and control apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104361185A (en) * 2014-11-21 2015-02-18 南京航空航天大学 Wire distribution space automatic generating method for cable virtual design
CN104809309A (en) * 2015-05-14 2015-07-29 北京理工大学 Three-dimensional automatic wiring method and device based on rapidly-exploring random tree
CN106099657A (en) * 2016-07-26 2016-11-09 中航光电科技股份有限公司 A kind of cable-assembly wiring method and frock

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
虚拟环境下基于离散控制点的线缆装配规划技术;刘检华，等;《机械工程学报》;20060831;第125-130页 *

Also Published As

Publication number Publication date
CN106951624A (en) 2017-07-14

Similar Documents

Publication Publication Date Title
CN109934914B (en) Embedded city design scene simulation method and system
CA2352176C (en) Scalable visualization for interactive geometry modeling
US6980935B2 (en) Method, apparatus and system for constructing and maintaining scenegraphs for interactive feature-based geoscience geometric modeling
CN105808672B (en) The dissemination method of magnanimity three dimensional point cloud based on browser
Gyulassy et al. A practical approach to Morse-Smale complex computation: Scalability and generality
CN105825550B (en) Take the complex three-dimensional building model cutting modeling method of consistency into account
CA2320447C (en) Interactively constructing, editing, rendering and manipulating geoscience models
CN110111410B (en) Two-three-dimensional pipe network data organization and display method based on spatial database
CN106951624B (en) A kind of cable-assembly virtual design wiring space preprocess method
CN103942306A (en) Three-dimensional city model self-adaption scheduling method
CN108765567A (en) A kind of system for building urban design digitlization sand table
AU2014306471A1 (en) Generating representations of recognizable geological structures from a common point collection
CN116486025A (en) Urban geological data processing platform based on big data cloud computing technology
CN104361185A (en) Wire distribution space automatic generating method for cable virtual design
CN109003333A (en) Interactive gridding model cutting method, device and modelling apparatus based on texture
Zehner Constructing geometric models of the subsurface for finite element simulation
CN103279602B (en) The delicate tissues method of the geographical entity space geometric data of a kind of rule
Yang et al. Analysis of visualization technology of 3D spatial geographic information system
Ma et al. Rapid reconstruction of a three-dimensional mesh model based on oblique images in the Internet of Things
Weber et al. Visualization of adaptive mesh refinement data
CN111445569A (en) Sedimentary geological evolution dynamic simulation method
Yin et al. An intelligent 3d printing path planning algorithm 3d printing path planning algorithm: An intelligent sub-path planning algorithm
CN109871592A (en) A kind of spatial discretization model towards electronic product cable laying layout optimization
Scianna et al. 3D GIS data model using open source software
CN112115216A (en) Method for binding attribute data in electronic map model space

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant