CN104765905B - Plan view and the first visual angle split screen synchronous display method based on BIM and system - Google Patents
Plan view and the first visual angle split screen synchronous display method based on BIM and system Download PDFInfo
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Abstract
The present invention provides a kind of plan view based on BIM and the first visual angle split screen synchronous display method and systems, including：Loaded and displayed BIM three-dimensional models；Navigation mould side is matched with model orientation；It generates corresponding plan view and assigns virtual camera；Corresponding first person figure is generated according to the position of camera, Viewing-angle information；By the magic square that navigates come the orientation of intuitive display view angle, and has compass functional；According to the visual angle of the instruction adjustment first person figure of user, and according to the view directions of virtual camera projection in the current visual angle data point reuse plan view；By the plan view and virtual camera projection as a part, using the first person figure as another part, the simultaneous display in same screen.The present invention is combined plane drawing with first person stereogram, model orientation is combined with compass, more intuitive observation and searching details component, the more intuitive matching problem for determining live Practical Project component and model component, convenient construction management, the requirement for personnel's technology is reduced simultaneously, and according to the image viewing of Display on the same screen, record and details component can be found common laborer.
Description
Technical field
The present invention relates to BIM application technologies and IT fields, act on intelligent engineering management, more particularly to one kind in movement
The technology and methods of BIM models are shown in client.
Background technology
BIM, that is, Building Information Modeling (Building Information Model), one as construction project are complete
Whole information carrier, it is a kind of architectural design of innovation, construction and management method.It is mainly characterized by continue immediately
Ground provides high-quality, consistent, reliable Project design scale, process and cost information.Architect, structure teacher and the full mistake of engineering project
Thread management each side realizes seamless connection, shared data and information by BIM collaborative platforms.Fining pipe is promoted using BIM technology
Reason reduces resource consumption, energy consumption.BIM has become the important technological means of building field project Whole Course Management.At present
The Revit of autodesk, inc. is BIM modelings and the project management software of mainstream the most.But there are some are apparent by Revit
Defect：1, hardware device is required and personnel's technology requires all very high, cause the high of facility cost and personnel cost；2、
Model in Revit can not be effectively combined together with live construction management well；3, pc client, Wu Fa are only limitted to
It is checked on mobile terminal (tablet, mobile phone etc.).
At traditional construction scene, generally a large amount of plan view of each profession is used to make however, when monitoring at the scene
Also there is certain requirement for personnel with plan view, when a large amount of plan view finds that accurately figure can also expend many in control
Between, and the orientation of drawing is also unclear, causes drawing to match hardly possible with site operation, under efficiency is relatively low.
Along with rapid economic development, construction project is increased, and big and small engineering project is innumerable, another party
Face, construction quality require further raising, engineering complexity to rise, and the multi-specialized crossed construction of multiplexing kind, these are all implied
Original each independent project management system of profession cannot meet present engineering management demand, a set of novel efficient comprehensive
The project management system needs of conjunction are established.A kind of technical solution is to establish engineering management on unified integrated platform
System covers the overall process of engineering, the project plan is formulated and is tracked, and each department can cooperate with work on platform
Make.The disadvantage is that service side is single, it is typically only Construction Party, does not consider more construction units, supplier, operator, management
The cooperation of side can not carry out engineering project whole comprehensive management.For this defect, Shanghai Telecom engineering finite is public
Department develops a kind of project management system, it is intended that the method by establishing mega project construction headquarters, headquarter concentrate
Decision, construction unit's flow are checked on, to improve the efficiency of project management.But still there are some defects among these：1, needle
More for the monitoring of progress and safety, can not be for construction site the problem of, is effectively managed, and 2, cannot intuitively see
Entire engineering, and management 3 in time is carried out for detailed problem, must be equipped with computer, and need a large amount of entire systems of equipment support
System, it is with high costs.
The patent of invention of Ou Teke is " for modeling the system and the side that carry out construction site management and operation with architecture information
Method " (application number：201180023129.9), it is contemplated that loopholes of the BIM for site construction management --- BIM models can not be by
The working site operation of Field Force outside.A kind of system and method are developed by the data structure and data set of BIM models
It is supplied to the technical staff at scene.But it there are some defects：1, can only transmission data and 2D pictures rather than intuitive 3D it is vertical
Body Model conveniently intuitively cannot be managed and operate for engineering site；2, the personnel in different majors post are needed
It selectes specific data to interact, relative inefficiencies.
Invention content
The defects of for the above-mentioned prior art, the technical problem to be solved in the present invention is embodied in the following：
1) by the complicated complicated model simplifications of the ends PC BIM, so as to be shown on common mobile terminal, for hardware
It is required that substantially reducing.
2) traditional plane construction drawing and BIM three-dimensional models are combined into display, it is more intuitive convenient for profession and layman
Observe engineering project entirety and details Local Members in ground.
3) cost for saving engineering site management does not need special instrument, the mobile visitor such as common smart mobile phone, tablet
Family end can all meet hsrdware requirements.
4) structure is suitable for the platform that all professions (structure, electromechanical, building etc.) scene cooperates.
According to a kind of plan view and the first visual angle split screen synchronous display method based on BIM provided by the invention, including such as
Lower step：
Loaded and displayed BIM three-dimensional models；
The magic square that navigates generates model orientation, and have before direction be north compass functional；
According to the BIM three-dimensional models of calling, corresponding plan view is generated, wherein the plan view is by being arranged in BIM
The 3D models acquired in scene camera at the top of three-dimensional model；
At the location point that user inputs on plan view, assign virtual camera, and show virtual camera in plan view
On projection, according to virtual camera project position obtain position data D A, according to virtual camera project view directions obtain
Perspective data DB；
Corresponding first person figure is generated according to the position data D A and perspective data DB, and visual angle orientation is assigned
Give navigation magic square；
According to the visual angle of the instruction adjustment first person figure of user, and according to the current visual angle data point reuse plane
The view directions that virtual camera projects in figure；
By the plan view and virtual camera projection as a part, using the first person figure as another portion
Point, the simultaneous display in same screen.
Preferably, the floor height and/or profession specified according to user generate corresponding plan view.
Preferably, position data D A and perspective data DB synchronous transfers.
Preferably, loaded and displayed passes through the BIM three-dimensional models after light-weight technologg.
Preferably, further include following steps：
Step i：Navigation magic square is shown in the first visual angle figure；
Wherein, the navigation magic square is synchronous with the matching of BIM three-dimensional models orientation, assigns compass functional, works as model view
When changing, the intuitive reaction in relation to model current view is provided；Or according to the instruction of user by first person figure
Visual angle assign navigation magic square.
According to a kind of plan view and the first visual angle split screen synchronous display system based on BIM provided by the invention, including such as
Lower module：
BIM three-dimensional model load-on modules are used for loaded and displayed BIM three-dimensional models；
Navigate magic square matching module, for matching BIM three-dimensional model load-on modules, assigns model compass functional.
BIM plan view automatically-generating modules generate corresponding plan view for the BIM three-dimensional models according to calling,
In, the plan view is by the 3D models acquired in the scene camera that is arranged at the top of BIM three-dimensional models；
The quick locating module of plan view, at the location point that user inputs on plan view, assigning virtual camera, and
The projection on plan view for showing virtual camera, the position projected according to virtual camera obtains position data D A, according to virtual
The view directions of camera projection obtain perspective data DB, and position data D A and perspective data DB are sent to BIM models first
People claims visual angle generation module；
BIM model first person generation modules, for generating phase according to the position data D A and perspective data DB
The first person figure answered；
Visual angle navigation module, the visual angle for adjusting first person figure according to the instruction of user, visual angle orientation is assigned
Navigation magic square matching module is given, while the current visual angle data transmission of first person figure is automatically generated into mould to BIM planes
Block；The visual angle side that BIM plan views automatically-generating module is projected according to virtual camera in the current visual angle data point reuse plan view
To；
BIM split screen simultaneous display modules, for by the plan view and virtual camera projection as a part, by described the
One people claims visual angle figure as another part, the simultaneous display in same screen.
Preferably, the floor height and/or profession specified according to user generate corresponding plan view.
Preferably, position data D A and perspective data DB synchronize be sent to BIM model first person generation modules.
Preferably, BIM three-dimensional models load-on module passes through the BIM solid moulds after light-weight technologg for loaded and displayed
Type.
Preferably, further include following device：
Navigation magic square module, for showing navigation magic square in the first visual angle figure；
Wherein, the navigation magic square is synchronous with the matching of BIM three-dimensional models orientation, assigns compass functional, works as model view
When changing, the intuitive reaction in relation to model current view is provided；Or according to the instruction of user by first person figure
Visual angle assign navigation magic square.
Compared with prior art, the present invention has following advantageous effect：
1) it overcomes that BIM model informations are huge, the difficulty of operation can not be shown on mobile terminal (mobile phone, tablet etc.),
Solve the problems, such as not being managed and operate in engineering site, facilitate external staff at the scene model check and
Operation.
2) not high for hardware requirement, it can be run on common mobile terminal (mobile phone, tablet etc.), the current overwhelming majority
People is owned by the equipment that can be run, and thus greatly reduces equipment cost.
3) the problem of plane drawing is various, and searching is not easy, inefficiency in conventional on-site management is solved, by each profession
The plane drawing of (building, structure, electromechanics etc.) concentrates into program, only need to select floor height and professional domain, can show at once
Corresponding plan view drawing, quickness and high efficiency.At the same time, each professional can check the useful letter for oneself as needed
Breath, and be managed and operate at the scene.
4) plane drawing is combined with first person stereogram, more intuitive observation and searching details component, just
Prompt construction management, while the requirement for personnel's technology is reduced, it can be according to the image of Display on the same screen common laborer
Observation, record and searching details component.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is split screen simultaneous display flow chart.
Fig. 2 is split screen display available design sketch.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Include such as lower die according to the plan view provided by the invention based on BIM and the first visual angle split screen synchronous display system
Block：
BIM three-dimensional model load-on modules are used for loaded and displayed by the BIM three-dimensional models after light-weight technologg, including
The every attribute and data of BIM models.Preferably, by introducing graphics engine that model picture and data classification reading realization is light
The BIM three-dimensional models of quantization realize the light-weight technologg to BIM three-dimensional models.
Navigate magic square matching module, for matching BIM three-dimensional model load-on modules, assigns model compass functional.
BIM plan view automatically-generating modules have invoked the size of BIM models, coordinate in BIM three-dimensional model load-on modules
Data etc. automatically generate corresponding plan view from above, can generate in three-dimensional model different floor height different majors (structure, building,
Electromechanics etc.) sectional view.Determine show which plan view during, can floor be determined according to the instruction of user first,
Then it shows that the corresponding plan view of the floor, the plan view are not 2D drawings, but a camera is added at top, to obtain
Rectangular projection of the BIM three-dimensional models to plane where the floor, be actually still 3D models.
The quick locating module of plan view can select specific on the plan view that BIM plan view automatically-generating modules generate
Location point, assign a virtual camera, according to the visual angle of the acquiescence set in system, virtual camera projection on plan view
Position data D A and perspective data DB is by synchronous driving to BIM model first person generation modules.
BIM model first person generation modules, the module by the quick locating module of plan view obtain plan view with
And virtual camera the position data D A that is projected on plan view and perspective data DB, correspond to position data D A's to show
First person image on position, cooperation visual angle navigation module assign visual angle orientation to navigation magic square matching module, to
Details component can quickly and easily be found to be observed, handled, label etc..
BIM split screen simultaneous display modules, the module are the first from BIM plan views automatically-generating module and BIM models respectively
Claim visual angle generation module to call image information, screen is divided in same screen into two parts, simultaneous display BIM plan views are automatic
Generate and correspond to first person figure.
Visual angle navigation module can change visual angle in first person figure, which extracts the BIM model first persons
Perspective data in the generation module of visual angle, then it is transferred to the visual angle projected in display plane figure in BIM plane automatically-generating modules
Direction.
As shown in Figure 1, first, light-weighted BIM models will have been made and imported, to which mobile client can load engineering
BIM models and obtain the information such as its attribute.Then, taps screen, can enter span mode, and screen display will be cut into
Two parts, a part are plan view, and another part is 3D solid BIM models, as shown in Figure 2.In the split screen part of plan view
Floor height can be switched, to have the function that all plane construction drawings of concentration to show the section plan of different height.
Plan view screen portions can click specific location on plan view, to which a camera be arranged at click, according to regarding for acquiescence
Feel that angle, the right meeting simultaneous display go out the 3D stereo-pictures for the first person put in the position.It visual angle can be in three-dimensional BIM
It is arbitrarily adjusted in model split screen, so as to observe location point concrete condition front and back up and down, and can be accurate
True finds detailed component, and every processing of operating mode is checked or added to it.Both view angle adjustment in 3D solid BIM models can be
The direction in the plane of plan view Zhong Tong Walk projection view angles.Corresponding relationship is synchronized between two screens.
Further, BIM model informations amount is big, even if having done lightweight, on screen both sides split screen synchronize or for
Configure born for relatively low mobile terminal it is bigger, so on mobile terminals can smooth display operation BIM models be
One difficult point.Common engineering software is run using industrial engine, and we use game engine UNITY 3D to handle BIM moulds
Type.It is 3D models after all, is exactly interim card in the maximum problem of tablet operation, the simultaneous display for keeping it smooth is most important to be exactly
FPS values, FPS values are higher, and system operation is more smooth.The method for improving FPS values is exactly to reduce to render object as far as possible, in order to
Realize that this effect, the render for the object that section cuts open are set to closed state, to reduce the consumption of GPU, general building
The structural model FPS of layer can reach 40 frames or so.And the technology of split screen display available is by the way that two cameras (scene camera and void are arranged
Quasi- camera), change the parameter of camera, two camera appearing pictures of modification shared ratio on the screen.
The split screen simultaneous display of electronic game is run at the ends PC mostly, and the performance of computer is far superior to the hard of mobile terminal
Part performance, and now can Display on the same screen on mobile terminals large-scale 3D game it is very few.But the present invention can be in performance phase
To not high two 3D models of mobile middle-end Display on the same screen, (since plan view is the rectangular projection of 3D models in fact).Game
Small map, which was generally done, simplifies processing, and the BIM models of the present invention did not did any simplified processing, 100% reduction original appearance.And have
Standby section function can check the plan view of a certain specific floor, rather than simple CAD plan views.
In order to run double-screen synchronous on mobile terminals, once encountered problems in split screen method, and intended directly to lead at the beginning
Enter CAD diagram paper as plan view to realize, but plan view and first person synchronize bring prodigious problem, and it is another
Aspect will increase data capacity.So after experimental study is multiple, it has been found that new method, is exactly split screen
Two figures are all 3D models.Plan view by disposing scene camera at top, realize by the rectangular projection to obtain 3D models.But
This brings another problem again, how to show the sectional view of different floor heightsRectangular projection is only able to display the projection at top, nothing
Method layering is checked.By largely testing trial, this problem is also resolved, and gives each structure of entire BIM three-dimensional models
The attached material of part, material is there are two types of state, and a kind of state is normally to show, another state is not show, passes through and defines one
The attribute of offset can be completed normally to show in the component material quality status of offset plane one side, the component material quality status of another side
The effect not shown.When floor converts, by changing offset value, the material quality status of changing section component makes to be not required to
Floor to be shown is hidden, to reach the visual effect of section.
In split screen simultaneous display, it is synchronous that can make all information all, since the image of split screen shows in fact
It is the same object, only scene camera is different with the angle of the camera lens of virtual camera.For label, then marked by extracting
The three-dimensional coordinate and corresponding plane coordinates of point, by linking the relationship of the two, respectively in plan view and first person figure
Corresponding position adds label respectively.But the label on plan view is marked mainly to be connected to first person corresponding position
The practical browsing of note, which needs to trigger in first person, to be realized.
Wherein, by the light-weighted method of BIM models, include the following steps：
Step 1：First BIM models (the first BIM models are to wait for light-weighted BIM models) are exported as into the 2nd BIM models,
And preserve the component color material information of component in the first BIM models；Wherein, run and show that the configuration of the 2nd BIM models is wanted
It asks less than the configuration requirement for running and showing the first BIM models；
Step 2：The physical grid of 2nd BIM models is simplified, and handles boundary representation, obtains the 3rd BIM models；
Step 3：3rd BIM models are rendered according to point-line-surface information and the component color material information.Third
BIM models are light-weighted BIM models.
Preferably, the first BIM models are Revit release formats, and the mobile terminal operating system is mobile phone operation system
Unite TOS.
Preferably, the step 2 includes the following steps：
Step 2.1：The maximum allowable angle A for increasing each pair of adjacent polygons face in the 2nd BIM models, by the 2nd BIM moulds
Mutual angle merges into a polygon facet less than the adjacent polygons face of the maximum allowable angle in type；Increase by the
Angle mutual in 2nd BIM models is less than described by the maximum allowable angle B of each pair of adjacent segments in two BIM models
The adjacent segments of maximum allowable angle B merge into a line segment；
Step 2.2：Maximum allowable absolute error between grid and entity solid is adjusted to the 2nd BIM models so that
Component in first BIM models will not lack in the 2nd BIM models.
Preferably, in step 3, to combined polygon facet and the corresponding multiple components of combined lines, difference root
It is rendered respectively according to respective component color material information.
Preferably, the format of the 2nd BIM models is the 3D formats of the operation and the display requirement that meet mobile terminal operating system.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (8)
1. a kind of plan view and the first visual angle split screen synchronous display method based on BIM, which is characterized in that include the following steps：
For loaded and displayed by the BIM three-dimensional models after light-weight technologg, BIM three-dimensional models include BIM in mobile client
The every attribute and data of model；Wherein, model picture and data classification are read and realizes lightweight by introducing graphics engine
BIM three-dimensional models；The attached material of each component of BIM three-dimensional models, for material there are two types of state, a kind of state is normal aobvious
Show, another state is not show, by defining the attribute of an offset, completes the component material quality status in offset plane one side
Normal display, the effect that the component material quality status of another side is not shown；When floor converts, by changing offset value,
The material quality status of changing section component makes to be not required to floor to be shown and hides, to reach the visual effect of section；
According to the BIM three-dimensional models of calling, corresponding plan view is generated, wherein the plan view is by setting in BIM solids
The 3D models acquired in scene camera at the top of model；Wherein, switch floor height in the split screen part of plan view, to show
The section plan of different height has the function that all plane construction drawings of concentration；
At the location point that user inputs on plan view, assign virtual camera, and show virtual camera on plan view
Projection, the position projected according to virtual camera obtain position data D A, and the view directions projected according to virtual camera obtain visual angle
Data DB；
Corresponding first person figure is generated according to the position data D A and perspective data DB；
According to the visual angle of the instruction adjustment first person figure of user, and according to virtual in current visual angle data point reuse plan view
The view directions of camera projection；
By the plan view and virtual camera projection as a part, using the first person figure as another part,
Simultaneous display in same screen；What the image of split screen showed is the same object；
The light-weighted method of BIM models, includes the following steps：
Step 1：First BIM models are exported as into the 2nd BIM models, and preserve the component color material of component in the first BIM models
Matter information；Wherein, run and show that configuration of the configuration requirement less than the first BIM models of operation and display of the 2nd BIM models is wanted
It asks；
Step 2：The physical grid of 2nd BIM models is simplified, and handles boundary representation, obtains the 3rd BIM models；
Step 3：3rd BIM models are rendered according to point-line-surface information and the component color material information；3rd BIM moulds
Type is light-weighted BIM models；
The step 2 includes the following steps：
Step 2.1：The maximum allowable angle A for increasing each pair of adjacent polygons face in the 2nd BIM models, will be in the 2nd BIM models
A polygon facet is merged into the adjacent polygons face that mutual angle is less than the maximum allowable angle；Increase by second
The maximum allowable angle B of each pair of adjacent segments in BIM models, less than described in most by angle mutual in the 2nd BIM models
The big adjacent segments for allowing angle B merge into a line segment；
Step 2.2：Maximum allowable absolute error between grid and entity solid is adjusted to the 2nd BIM models so that first
Component in BIM models will not lack in the 2nd BIM models；
In step 3, to combined polygon facet and the corresponding multiple components of combined lines, respectively according to respective component
Color material information is rendered respectively；
The format of 2nd BIM models is the 3D formats of the operation and the display requirement that meet mobile terminal operating system；
By the three-dimensional coordinate for extracting mark point and corresponding plane coordinates, by linking the relationship of the two, respectively in plan view
Label is added respectively with first person figure corresponding position；Label on plan view, to be connected to first person pair
Position is answered, the practical browsing of label, which needs to trigger in first person, to be realized.
2. plan view and the first visual angle split screen synchronous display method, feature according to claim 1 based on BIM exist
In the floor height and/or profession specified according to user generate corresponding plan view.
3. plan view and the first visual angle split screen synchronous display method, feature according to claim 1 based on BIM exist
In position data D A and perspective data DB synchronous transfers.
4. plan view and the first visual angle split screen synchronous display method, feature according to claim 1 based on BIM exist
In further including following steps：
Step i：Navigation magic square is shown in the first visual angle figure；
Wherein, the navigation magic square is synchronous with the matching of BIM three-dimensional models orientation；Or the first person is regarded according to the instruction of user
The visual angle of angle figure assigns navigation magic square.
5. a kind of plan view and the first visual angle split screen synchronous display system based on BIM, which is characterized in that including following module：
BIM three-dimensional model load-on modules, for the loaded and displayed BIM three-dimensional models in mobile client；BIM three-dimensional models include
The every attribute and data of BIM models；Wherein, model picture and data classification are read and realizes light weight by introducing graphics engine
The BIM three-dimensional models of change；The attached material of each component of BIM three-dimensional models, for material there are two types of state, a kind of state is normal aobvious
Show, another state is not show, by defining the attribute of an offset, completes the component material quality status in offset plane one side
Normal display, the effect that the component material quality status of another side is not shown；When floor converts, by changing offset value,
The material quality status of changing section component makes to be not required to floor to be shown and hides, to reach the visual effect of section；
BIM plan view automatically-generating modules generate corresponding plan view, wherein institute for the BIM three-dimensional models according to calling
It is by the 3D models acquired in the scene camera that is arranged at the top of BIM three-dimensional models to state plan view；Wherein, in point of plan view
Screen switches floor height in part, to reach the work for concentrating all plane construction drawings to show the section plan of different height
With；
The quick locating module of plan view, at the location point that user inputs on plan view, assigning virtual camera, and show
The projection on plan view of virtual camera, the position projected according to virtual camera obtains position data D A, according to virtual camera
The view directions of projection obtain perspective data DB, and position data D A and perspective data DB are sent to the BIM model first persons
Visual angle generation module；
BIM model first person generation modules, it is corresponding for being generated according to the position data D A and perspective data DB
First person figure；
Visual angle navigation module, the visual angle for adjusting first person figure according to the instruction of user, while the first person being regarded
The current visual angle data transmission of angle figure is to BIM plane automatically-generating modules；BIM plan views automatically-generating module is according to described current
Perspective data adjusts the view directions that virtual camera projects in plan view；
BIM split screen simultaneous display modules will be described the first for regarding the plan view and virtual camera projection as a part
Claim visual angle figure as another part, the simultaneous display in same screen；What the image of split screen showed is the same object；
BIM three-dimensional model load-on modules pass through the BIM three-dimensional models after light-weight technologg for loaded and displayed；
The light-weighted method of BIM models, includes the following steps：
Step 1：First BIM models are exported as into the 2nd BIM models, and preserve the component color material of component in the first BIM models
Matter information；Wherein, run and show that configuration of the configuration requirement less than the first BIM models of operation and display of the 2nd BIM models is wanted
It asks；
Step 2：The physical grid of 2nd BIM models is simplified, and handles boundary representation, obtains the 3rd BIM models；
Step 3：3rd BIM models are rendered according to point-line-surface information and the component color material information；3rd BIM moulds
Type is light-weighted BIM models；
The step 2 includes the following steps：
Step 2.1：The maximum allowable angle A for increasing each pair of adjacent polygons face in the 2nd BIM models, will be in the 2nd BIM models
A polygon facet is merged into the adjacent polygons face that mutual angle is less than the maximum allowable angle；Increase by second
The maximum allowable angle B of each pair of adjacent segments in BIM models, less than described in most by angle mutual in the 2nd BIM models
The big adjacent segments for allowing angle B merge into a line segment；
Step 2.2：Maximum allowable absolute error between grid and entity solid is adjusted to the 2nd BIM models so that first
Component in BIM models will not lack in the 2nd BIM models；
In step 3, to combined polygon facet and the corresponding multiple components of combined lines, respectively according to respective component
Color material information is rendered respectively；
The format of 2nd BIM models is the 3D formats of the operation and the display requirement that meet mobile terminal operating system；
By the three-dimensional coordinate for extracting mark point and corresponding plane coordinates, by linking the relationship of the two, respectively in plan view
Label is added respectively with first person figure corresponding position；Label on plan view, to be connected to first person pair
Position is answered, the practical browsing of label, which needs to trigger in first person, to be realized.
6. plan view and the first visual angle split screen synchronous display system, feature according to claim 5 based on BIM exist
In the floor height and/or profession specified according to user generate corresponding plan view.
7. plan view and the first visual angle split screen synchronous display system, feature according to claim 5 based on BIM exist
In, position data D A and perspective data DB synchronize be sent to BIM model first person generation modules.
8. plan view and the first visual angle split screen synchronous display system, feature according to claim 5 based on BIM exist
In further including following device：
Navigation magic square module：For showing navigation magic square in the first visual angle figure；
Wherein, the navigation magic square is synchronous with the matching of BIM three-dimensional models orientation, compass functional is assigned, according to the instruction of user
Assign the visual angle of first person figure to navigation magic square.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080611.6A CN104765905B (en) | 2015-02-13 | 2015-02-13 | Plan view and the first visual angle split screen synchronous display method based on BIM and system |
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| CN201510080611.6A CN104765905B (en) | 2015-02-13 | 2015-02-13 | Plan view and the first visual angle split screen synchronous display method based on BIM and system |
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| CN104765905B true CN104765905B (en) | 2018-08-03 |
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| US11842029B2 (en) | 2018-08-28 | 2023-12-12 | Vivo Mobile Communication Co., Ltd. | Image display method and mobile terminal |
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