CN108133116A - CAD floor plan wall thickness automatic identifying methods and system - Google Patents
CAD floor plan wall thickness automatic identifying methods and system Download PDFInfo
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- CN108133116A CN108133116A CN201810037523.1A CN201810037523A CN108133116A CN 108133116 A CN108133116 A CN 108133116A CN 201810037523 A CN201810037523 A CN 201810037523A CN 108133116 A CN108133116 A CN 108133116A
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- 101150064138 MAP1 gene Proteins 0.000 claims description 6
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- 239000004020 conductor Substances 0.000 claims description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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Abstract
The invention discloses a kind of CAD floor plans wall thickness automatic identifying methods.This method includes：Upload CAD house type formatted files；Backstage Service is called to parse cad file, returns to the parallel segment group classified；The endpoint of loaded and displayed base map and all line segments；Line drawing wall tool in startup captures first endpoint；It attempts to capture second endpoint, starts automatic wall thickness algorithm；According to the direction of current line segment and wall thickness generation wall.The method of the present invention is capable of the thickness of automatic identification house type wall when drawing wall, so as to accelerate to copy the speed of house type, and ensure that the accuracy of thickness of wall body.The present invention also proposes a kind of corresponding CAD floor plans wall thickness automatic recognition system with the above method.
Description
Technical field
The present invention relates to engineering drawing management technical field, more particularly to a kind of CAD floor plans wall thickness automatic identifying method
And system.
Background technology
CAD (Computer-aided design, CAD) is as outstanding engineering achievement, extensively
It is applied to architectural design field generally, designer is in dress design software to accelerate the speed of establishment house type, can pass through CAD
Figure creates house type as figure is copied.During establishment, since wall thickness differs, more change the wall thickness be easy to cause mistake manually, and
It is inefficient.The method for copying house type generation wall can not facilitated according to CAD diagram currently on the market.
Have in patent application, CN201410211041.5 proposes the recognition methods of wall and floor plan in a kind of floor plan
Length ratio auto-correction method, however the wall recognition methods based on image identify, take image denoising, image enhancement and
Gradation conversion identifies to carry out the appearance profile of floor plan, and hough is carried out to edge image and converts to obtain the identification wall straight line that arrives.
This method identification wall depends on the gray scale of file, thus discrimination is low, and the thickness low LCL of wall is accurate.But when very much
It waits, indoor design is very sensitive to thickness of wall body error, therefore how to accurately identify the thickness of the wall in engineering drawing
Degree is a problem to be solved.In addition, wall identification needs to carry out a large amount of image procossing to drawing in this method, to user's
Computer performance is more demanding, when drawing is larger, it may appear that the problem of processing time is long, inefficiency.
Invention content
In order to overcome deficiency of the prior art, efficiency is low when solving imitation house type and the inaccurate of thickness of wall body is asked
Topic, the present invention provide a kind of CAD floor plans wall thickness automatic identifying method and system.It, can be automatic when drawing wall using the present invention
The thickness of house type wall is identified, so as to accelerate to copy the speed of house type, and ensure that the accuracy of thickness of wall body.
The first aspect of the invention proposes a kind of CAD floor plans wall thickness automatic identifying method, includes the following steps：
Upload CAD house type formatted files；
Backstage Service is called to parse the CAD house types formatted file；
Return to base map and the parallel segment group classified, i.e. wall information；
The endpoint of base map described in loaded and displayed and all parallel segment group middle conductors；
Line drawing wall tool in startup captures first endpoint；
It attempts to capture second endpoint, starts automatic wall thickness algorithm；
According to the direction of current line segment and wall thickness generation wall.
The second aspect of the invention proposes a kind of CAD floor plans wall thickness automatic recognition system, including headend equipment and Web
Server, the headend equipment include processor and memory, and the processor obtains the number of server by network communication
According to computer-readable instruction being stored in memory, when the computer-readable instruction is performed by the processor so that described
Processor holds following steps：
Upload CAD house type formatted files；
Backstage Service is called to parse the CAD house types formatted file；
Return to base map and the parallel segment group classified, i.e. wall information；
The endpoint of base map described in loaded and displayed and all parallel segment group middle conductors；
Line drawing wall tool in startup captures first endpoint；
It attempts to capture second endpoint, starts automatic wall thickness algorithm；
According to the direction of current line segment and wall thickness generation wall.
Background server is then similar with general computer architecture including processor, hard disk, memory, system bus etc., but
It is that server needs to provide highly reliable service, and needs work without interruption for 7x24 hours, to provide service for headend equipment
It supports.
The invention has the advantages that wall recognizer proposed by the present invention is more accurate to the identification of thickness of wall body,
And the present invention optimizes wall recognizer, the operand of each step in wall recognizer is analyzed, by operation
It measures larger step and distributes to server completion, the operation pressure of user terminal is reduced using network architecture.Using the present invention
Wall thickness automatic identifying method, user can efficiently copy house type, remove the operation for being manually entered different wall thickness from, and ensure that
The accuracy of thickness of wall body has been accomplished fast and accurate.
Description of the drawings
Fig. 1 is the schematic diagram of wall in CAD diagram paper；
Fig. 2 is the drawing of the drafting in AutoCAD in one embodiment；
Fig. 3 is the schematic diagram that line segment endpoint is created in one embodiment；
Fig. 4 is the schematic diagram that wall is created in one embodiment；
Fig. 5 is that there are schematic diagrames during door and window in one embodiment；
Fig. 6 is to the schematic diagram of door and window line segment processing effect in one embodiment；
Fig. 7 is the flow chart of wall thickness automatic identifying method in one embodiment；
Fig. 8 is the flow chart of automatic wall thickness algorithm in one embodiment.
Specific embodiment
Structural principle of the present invention and functional characteristics are described further in conjunction with the drawings and specific embodiments, but not as
Limitation of the invention.
In CAD diagram paper, the main pel for forming wall is exactly line segment, and wall is one formed by several line segments
Closed area, the closed interval that wall is surrounded are a room.For example, in drawing shown in Fig. 1, comprising a room,
There are 4 walls (being respectively labeled as 1~wall of wall 4), wherein wall 1 is represented by interior line segment 11 and outer line segment 12.
In one embodiment, CAD floor plan wall thickness automatic identifying methods of the invention include the following steps：
(1) house type drawing is drawn in AutoCAD, as shown in Figure 2；
(2) front end imports the cad file for drawing house type drawing and is uploaded to Web server, and Web server parses
Cad file, specific resolving are then illustrating.The wall data in house type are returned to front end later.
(3) front end is created that all endpoints of line segment to come.As shown in figure 3, open cad file is shown as Background
31, and create the endpoint 32 of each line segment on it, i.e., shown in small circle；
(4) mural painting wall order in starting, selects starting point of any one endpoint as wall；
(5) when selecting another endpoint, automatic wall thickness algorithm is called to obtain wall thickness angle value, according to the wall thickness returned
The direction of value and wall creates wall.In a kind of preferred mode, another endpoint may be used close to absorption mode into
Row selection, to facilitate user's fast selecting.As shown in figure 4, the wall that wherein each grey rectangle expression has created (is marked respectively
It is denoted as 41~wall of wall 45).It can be seen that these walls are completely superposed with the wall in Background, it is seen that automatic wall thickness algorithm is accurate
True calculates wall thickness.If two endpoints of selection there is no suitable wall, can according to acquiescence wall thickness angle value and
Direction creates.
In some cad files, door and window on wall can also be represented with line segment, as shown in figure 5, have respectively window 51~
Window 53, if window 51 is represented by 4 line segments, the outer profile of window is represented by the rectangle that 1~endpoint of endpoint 4 forms.Therefore
In a preferred embodiment, need to filter out the endpoint of door and window in the thickness algorithms for calculating wall automatically, i.e., not window
Endpoint as the wall thickness angle value calculated.It therefore, should not be window as shown in fig. 6, when selecting wall endpoint 1 and wall endpoint 2
The line segment endpoint of the lower edge at family 61 as reference, and should reasonably automatically identify wall thickness side 1000mm to generate wall.
By above-mentioned multiple embodiments it is found that after front end importing cad file, method automatic fitration of the invention has been fallen on wall
Door and window, can accurately identify real wall, be calculated automatically from wall thickness angle value.According to Background come when copying floor plan,
It can accelerate it and copy the speed of house type, and the precision of automatic identification thickness of wall body can reach grade.
Web server will be illustrated next to parse the process of cad file.The process includes：
(1) using ObjectARX, house type information is read；
(2) all line segments and multi-line section in cad file are read, including the line segment stored in Block, these line segments are pressed
Classify according to direction and parallel condition, specifically include：
Step 1：Initialization mapping is denoted as Map1, and wherein key is line segment direction, is worth the array for line segment；
Step 2：For current line segment L1, Map1 is searched, is seen with the presence or absence of the key identical with L1 directions.It such as finds, then
L1 is added in line segment array.Otherwise, it creates the direction of L1 and the key of line segment L1 is added to value to value, and this key
In Map1；
Step 3：Next line segment is set as current line segment L1, repeats Step2, until traversing all line segments, Map1 is turned
Change the storage of Json data into.
(3) AutoCAD base maps and the line segment group classified are returned into front end.
The process of above parsing cad file is packaged into WebService, and be set on terminal or remote server.
In another embodiment, as described in Figure 7, CAD floor plan wall thicknesses automatic identifying method of the invention includes following
Step；
(1) CAD house type formatted files are uploaded；
(2) backstage Service is called to parse cad file；
(3) base map and the parallel segment group classified, i.e. wall information are returned；
(4) endpoint of loaded and displayed base map and all line segments；
(5) line drawing wall tool in starting, captures first endpoint；
(6) it attempts to capture second endpoint, starts automatic wall thickness algorithm, direction and d according to L1 generate wall.
The processing procedure of automatic wall thickness algorithm will be illustrated next.Various known walls, which may be used, in automatic wall thickness algorithm knows
Other algorithm obtains wall, then automatic measurement thickness.In a kind of preferred embodiment, the automatic wall thickness algorithm as shown in figure 8,
Include the following steps：
1) line segment that two points are formed currently is captured, is denoted as L1, and it is 1000mm to initialize wall thickness d, wall thickness is effective
Value is set as 30mm~1000mm
2) all parallel segment groups are traversed, check whether current line segment group is parallel with L1, it is such as parallel, preserve current line segment group
For PL1 and jump out cycle.Otherwise, algorithm is exited；
3) parallel lines PL1 is searched, L1 or conllinear line segment can be found in parallel lines.It is to continue with, otherwise, exits calculation
Method；
4) relevant parallel lines line segment group PL1 is traversed, current line segment is denoted as L2, performs following Step1~Step3,
Step 1：Judge whether line segment L1 and L2 are conllinear, and whether Projection Line Segment is overlapped, this time recycled if then jumping out；
Step 2：Check in PL1 whether have it is conllinear with L1, and Projection Line Segment be overlapped, if can find, L2 is alternative line
Section, and L1 and L2 can form the internal and external line of wall.Otherwise it jumps out and this time recycles；
Step 3：Note the distance between L1, L2 is dist；
Step 4：If dist is between virtual value, and smaller than d, then d is denoted as dist, at the same record L1 to L2 it
Between direction；
4) wall thickness d and direction are finally returned to.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, which can be stored in a computer-readable storage and be situated between
In matter, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, aforementioned storage medium can be
The non-volatile memory mediums such as magnetic disc, CD, read-only memory (Read-Only Memory, ROM) or random storage note
Recall body (Random Access Memory, RAM) etc..
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention is subject to claim.
Claims (9)
1. a kind of CAD floor plans wall thickness automatic identifying method, includes the following steps：
Upload CAD house type formatted files；
Backstage Service is called to parse the CAD house types formatted file；
Return to base map and the parallel segment group classified；
The endpoint of base map described in loaded and displayed and all parallel segment group middle conductors；
Line drawing wall tool in startup captures first endpoint；
It attempts to capture second endpoint, starts automatic wall thickness algorithm；
According to the direction of current line segment and wall thickness generation wall.
2. a kind of CAD floor plans wall thickness automatic identifying method as described in claim 1, it is characterised in that described in the parsing
CAD house type formatted files include：
(1) using ObjectARX, house type information is read；
(2) all line segments and multi-line section in the CAD house types formatted file are read, by these line segments according to direction and parallel feelings
Condition is classified, and is specifically included：
Step 1：Initialization mapping is denoted as Map1, and wherein key is line segment direction, is worth the array for line segment；
Step 2：Check in PL1 whether have it is conllinear with L1, and Projection Line Segment be overlapped, if can find, L2 is alternative line segment,
And L1 and L2 can form the internal and external line of wall.Otherwise it jumps out and this time recycles；
Step 3：Next line segment is set as current line segment L1, repeats Step2, until traversing all line segments, Map1 is converted into
Json data store.
(3) AutoCAD base maps and the line segment group classified are returned into front end.
3. a kind of CAD floor plans wall thickness automatic identifying method as described in claim 1, it is characterised in that the automatic wall thickness is calculated
Method includes the following steps：
The line segment that two points are formed currently is captured, is denoted as L1, and it is 1000mm to initialize wall thickness d, wall thickness virtual value is set
For 30mm~1000mm；
All parallel segment groups are traversed, check whether current line segment group is parallel with L1, such as parallel, it is PL1 to preserve current line segment group
And jump out cycle.Otherwise, algorithm is exited；
Parallel lines PL1 is searched, L1 or conllinear line segment can be found in parallel lines.It is to continue with, otherwise, exits algorithm；
Relevant parallel lines line segment group PL1 is traversed, current line segment is denoted as L2, performs following Step1~Step3,
Step 1：Judge whether line segment L1 and L2 are conllinear, and whether Projection Line Segment is overlapped, this time recycled if then jumping out；
Step 2：Check in PL1 whether have it is conllinear with L1, and Projection Line Segment be overlapped.If can find, continue, at this point, L2 is
Alternative line segment, i.e. L1 and L2 can form the internal and external line of wall, otherwise jump out and this time recycle；
Step 3：Note the distance between L1, L2 is dist；
Step 4：If dist is between virtual value, and smaller than d, then d is denoted as dist, while recorded between L1 to L2
Direction；
Finally return to the direction of wall thickness d and wall.
4. a kind of CAD floor plans wall thickness automatic identifying method as described in claim 1, it is characterised in that described to attempt to capture the
Two endpoints are specially to be selected using close to by the way of absorption.
5. a kind of CAD floor plans wall thickness automatic identifying method as described in claim 1, it is characterised in that the automatic wall thickness is calculated
Method can filter out the endpoint of door and window.
6. a kind of CAD floor plans wall thickness automatic recognition system, including headend equipment and Web server, it is characterised in that：
The headend equipment includes processor and memory, and computer-readable instruction, the calculating are stored in the memory
When machine readable instruction is performed by the processor, and the processor is caused to perform any one of claim 1-5 institutes
The each step of CAD floor plan wall thickness automatic identifying methods stated.
A kind of 7. CAD floor plans wall thickness automatic recognition system as claimed in claim 6, it is characterised in that the Web server
Including processor and memory, work without interruption within described server 7x24 hours.
8. a kind of CAD floor plans wall thickness automatic recognition system as claimed in claim 6, it is characterised in that described in the parsing
The process of CAD house type formatted files is packaged into WebService, and be set in terminal.
9. a kind of CAD floor plans wall thickness automatic recognition system as claimed in claim 6, it is characterised in that described in the parsing
The process of CAD house type formatted files is packaged into WebService, and be set on remote server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810037523.1A CN108133116B (en) | 2018-01-15 | 2018-01-15 | Method and system for automatically identifying wall thickness of CAD house type graph |
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| CN201810037523.1A CN108133116B (en) | 2018-01-15 | 2018-01-15 | Method and system for automatically identifying wall thickness of CAD house type graph |
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| CN112270739A (en) * | 2020-07-15 | 2021-01-26 | 深圳市华橙数字科技有限公司 | Indoor area confirmation method and device based on two dimensions, terminal and storage medium |
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| Publication number | Publication date |
|---|---|
| CN108133116B (en) | 2021-08-24 |
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