CN107369205A - A kind of three-dimensional linkage display methods of mobile terminal city two - Google Patents
A kind of three-dimensional linkage display methods of mobile terminal city two Download PDFInfo
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- CN107369205A CN107369205A CN201710536521.2A CN201710536521A CN107369205A CN 107369205 A CN107369205 A CN 107369205A CN 201710536521 A CN201710536521 A CN 201710536521A CN 107369205 A CN107369205 A CN 107369205A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/05—Geographic models
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/40—Filling a planar surface by adding surface attributes, e.g. colour or texture
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/04—Texture mapping
Abstract
The invention discloses a kind of three-dimensional linkage display methods of mobile terminal city two, comprise the following steps：1st, three dimensional file data are parsed and organized, establish three-dimensional scenic, show 3-D view；2nd, current visual angle point and direction point in three-dimensional scenic are obtained, real-time delivery is to two dimension view；3rd, two dimension view parsing two-dimensional vector data, with reference to current visual angle point in three-dimensional scenic and direction point in the projection value of horizontal plane, real-time rendering two dimension view.This method can realize two three-dimensional linkage displays, play advantage of the two-dimensional map in terms of the positioning of position, realize and have complementary advantages, while three-dimensional city scene is browsed, positioning and the direction of observation of current visual angle can be seen on two-dimensional scene.
Description
Technical field
The invention belongs to field of virtual reality, and in particular to a kind of in the side that mobile terminal two three-dimensional linkages of progress are shown
Method.
Background technology
In recent years, although moving three dimension GIS continuous development further improves the expression of geography information, its
Still in developing stage, it is more suitable that the solutions of some problems is started with from the two-dimension GIS of maturation.This just needs to realize two three-dimensional collection
Into giving full play to the respective advantage of two-dimension GIS and three-dimension GIS.Simultaneously with " smart city ", " concept such as digital earth carries
Go out, the three-dimensional city Visualization Study of mobile terminal is particularly important.
Two-dimensional display windows and the principle of three-dimensional display windows linkage are realized by the response mechanism of certain message.
And that realizes two-dimensional map coordinate and three-dimensional scenic coordinate maps the basic premise being in response to one by one, while Two-dimensional electron map
Reference projection coordinate system should be consistent with the coordinate system of three-dimensional scenic construction.System mutually transmits realization by two three-dimensional coordinates
The synchronization that two-dimentional three dimensional window is shown.In order to fully demonstrate the respective advantage of two-dimension GIS and three-dimension GIS, GIS bis- or three is being realized
The research process of linkage display are tieed up, it is necessary to take into full account some associated specifications, main requirement is listed below：
(1) data demand
Two three-dimensional linkages show in Data Model Designing, must fully take into account in terms of data tissue and storage two dimension,
Three dimensional characteristic, it is desirable to accomplish that source data shares a set of geographical spatial data.In showing occasion in part, at least also have to
Ask 2-D data and three-dimensional data can be relevant, corresponding ratio is consistent.
(2) display and operation requirement
Same regular and same human-computer interaction module should be used in the manipulation of two and three dimensions environment Visualization, is needed
Keep scene domain and the uniformity of scene manipulation under two and three dimensions display environment.The operation of scene include advance, retreat,
Rotation, amplification, reduce etc., when carrying out visualized operation, the visual angle of scene, content, scope are all changing, another window it is each
Item index will also change.
Certainly, need the content that is consistent also many during two three-dimensional linkages, but due to mobile terminal platform
Ability is relatively limited, and the content of worry about uniformity will necessarily cause the fluency of real-time, interactive, should be directed to application characteristic
The necessary linkage demand of primary study.Realize that the prior art of two three-dimensional linkages has subject matter and had at present：1st, platform is realized
Mainly based on desktop end, mobile terminal is then relatively fewer；2nd, most of two three-dimensional linkages show that the exploitation of software by means of the 3rd
Fang Pingtai, dependence is stronger, and implementation process is opaque, and data tissue is unintelligible.
The content of the invention
Goal of the invention：For problems of the prior art, the invention provides a kind of mobile terminal city two is three-dimensional
Interlocked display method, this method can realize two three-dimensional linkage displays in mobile terminal, for " high building stand in great numbers, cover all the sky "
City scenarios feature, play advantage of the two-dimensional map in terms of the positioning of position, realize and have complementary advantages, browsing three-dimensional city field
While scape, positioning and the direction of observation of current visual angle can be seen on two-dimensional scene.
Technical scheme：The present invention adopts the following technical scheme that：A kind of three-dimensional linkage display methods of mobile terminal city two, bag
Include following steps：
(1) three dimensional file data are parsed and organized, establish three-dimensional scenic, show 3-D view；
(2) current visual angle point and direction point in three-dimensional scenic are obtained, real-time delivery is to two dimension view；
(3) two dimension view parsing two-dimensional vector data；With reference to current visual angle point in three-dimensional scenic and direction point in horizontal plane
Projected position, real-time rendering two dimension view.
Three dimensional file data include three-dimensional coordinate data, three-dimensional coordinate data projection value in the horizontal plane and two-dimensional vector
Data are into corresponding proportionate relationship.
Three dimensional file data are obtained by GIS two-dimension vector maps；Height attributes are added in ArcGIS, and utilize Sketch
Up plug-in units are stretched as threedimensional model file, are opened in Sketch Up and carry out model editing, add texture, and export is three-dimensional general
Obj formatted files as three dimensional file data.
Step (1) establishes three-dimensional scenic using OpenGL ES in the present invention, shows 3-D view.Step (2) specifically includes
Following steps：
(2.1) according to the parameter and camera parameters of the OpenGL ES projection view frustums set, the lower bound of hither plane is chosen
Central point chooses the direction point of video camera as the direction point transmitted as the visual angle point transmitted；
(2.2) gone out using scene change inverse of a matrix matrix computations corresponding non-transformed with current visual angle point and direction point
Three-dimensional location coordinates；
(2.3) the three-dimensional home position coordinate that step (2.2) is calculated passes to two dimension in the projection value of horizontal plane
View.
The display of 3-D view and the display of two dimension view are completed by different threads；Step (2) realizes line by singleton class
Communicated between journey, current visual angle point in the three-dimensional scenic got and direction point real-time delivery are shown into thread to two dimension view.
Above-mentioned mobile terminal is the mobile embedded type equipment based on android system or IOS systems.
Beneficial effect：Compared with prior art, the three-dimensional linkage display methods of mobile terminal city two tool disclosed by the invention
Have the advantage that：1st, two three-dimensional linkages are shown, can be played advantage of the two-dimensional map in terms of the positioning of position, be realized that advantage is mutual
Mend, while three-dimensional city scene is browsed, positioning and the direction of observation of current visual angle can be seen on two-dimensional scene；2nd, may be used
On two-dimension vector map, to mark position and the view directions in the three-dimensional scenic roam procedure of current city in real time.
Brief description of the drawings
Fig. 1 is the three-dimensional scenic linkage display block diagram of mobile terminal city two；
Fig. 2 is two three-dimensional scenics linkage implementation process figure；
Fig. 3 is the three-dimensional linkage display renderings of mobile terminal two；
Fig. 4 is the flow chart that D Urban model is realized based on two-dimension vector map and 3 d modeling software；
Fig. 5 is the visual angle point schematic diagram transmitted；
Fig. 6 is three-dimensional original coordinates and two-dimensional vector coordinate proportional zoom schematic diagram；
Embodiment
The invention discloses a kind of three-dimensional linkage display methods of mobile terminal city two, comprise the following steps：
(1) three dimensional file data are parsed and organized, establish three-dimensional scenic, show 3-D view；
(2) current visual angle point and direction point in three-dimensional scenic are obtained, real-time delivery is to two dimension view；
(3) two dimension view parsing two-dimensional vector data；With reference to current visual angle point in three-dimensional scenic and direction point in horizontal plane
Projected position, real-time rendering two dimension view.
The present embodiment in mobile terminal by building two three-dimensional linkage display interfaces come the present invention is furture elucidated.Such as Fig. 1
It is shown, establish 3-D view in mobile terminal and show that thread and two dimension view show thread, then to two-dimentional window and three-dimensional window
The initial work that is shown respectively of mouth, while will also parse two-dimentional SHP data and three-dimensional obj data respectively and organize to being
In system internal memory.After initial work, it will enter and refresh the drafting stage in real time.Under normal circumstances, two-dimentional window is real-time
Drafting utilizes 2-D data, and three dimensional window real-time rendering utilizes three-dimensional data, do not interfere with each other each other.In the three-dimensional connection of scene two
In dynamic, when 3-D view thread draws corresponding scene each time, it is required for resolving visual angle and being delivered to two dimension in real time
In the thread of drafting, and draw out current visual angle point in real time by two dimension view, realize the scene linkage between them.This reality
Apply in example and inter-thread communication is realized by singleton class, by current visual angle point in the three-dimensional scenic got and direction point real-time delivery
Thread is shown to two dimension view.
The present invention establishes three-dimensional scenic using OpenGL ES, shows 3-D view.OpenGL ES are OpenGL graphics
Shape API subset, design specifically for embedded devices such as mobile phone, PDA and game hosts, and established based on OpenGL ES
Three-dimensional scenic is also the effective means that mobile end equipment carries out three-dimension developing, and it is flexibly easily special also to have given full play to mobile terminal
Point.
Current visual angle point and direction point, real-time delivery in three-dimensional scenic is obtained to concretely comprise the following steps to two dimension view：
(2.1) according to the parameter and camera parameters of the OpenGL ES projection view frustums set, the lower bound of hither plane is chosen
Central point chooses the direction point of video camera as the direction point transmitted as the visual angle point transmitted；
(2.2) gone out using scene change inverse of a matrix matrix computations corresponding non-transformed with current visual angle point and direction point
Three-dimensional location coordinates；
(2.3) the three-dimensional home position coordinate that step (2.2) is calculated passes to two dimension in the projection value of horizontal plane
View.
Two dimension view according to current visual angle point in two-dimensional vector data, three-dimensional scenic and direction point horizontal plane projection
Value, two dimension view is drawn, as shown in Figure 2.
As shown in figure 3, the three-dimensional linkage display renderings of mobile terminal city two realized by the present embodiment, right figure is real
When three-dimensional scenic, left figure is real-time two-dimensional scene, while marks current three-dimensional view angle point in two-dimensional scene by round dot,
The direction of the current visual angle point observation of arrow mark.
As shown in figure 4, three-dimensional data file used in the present embodiment, can be conventional three-dimensional data form ---
Obj files；The XOZ planes of coordinate data in file, the i.e. projection of horizontal plane and two-dimensional vector data will have corresponding proportionate relationship.
The present embodiment combines GIS two-dimension vector maps and 3 d modeling software realizes the foundation of D Urban model.In ArcGIS
Height attributes are added, and threedimensional model file is stretched as using Sketch Up plug-in units, is opened in Sketch Up and carries out model
Editor, add texture, the three-dimensional general obj formatted files of export.
As shown in figure 5, in order to be bonded actual conditions, the present embodiment is chosen and calculates the lower bound central point of hither plane as biography
The visual angle point passed.1 is direction of observation in Fig. 5, and 2 be camera views, and 3 be hither plane, and 4 be far plane, and 5 be that direction point is closely being put down
The projection in face, 6 be the lower bound central point of hither plane.
Because projection of the scene on hither plane 3 in cone is finally shown in 3-D view, if by video camera
Position as the visual angle point transmitted, then the visual angle point position that is shown in two dimension view is inevitable behind current 3-D view,
There is very big error.The present embodiment also meets the visual theory of interactive person using the principle so chosen very much, it also avoid
Certain error.
As shown in fig. 6, three-dimensional original coordinates are sat in XOZ planes, the i.e. projection of horizontal plane with two-dimensional vector in the present embodiment
Mark meets corresponding relation, i.e., between the least surrounding boxes of the floor projection of three-dimensional scenic and the least surrounding boxes of two-dimensional scene
With certain proportionate relationship.Behind position of the present embodiment under the original coordinate system for obtaining three-dimensional scenic, the position is calculated
Away from three-dimensional scenic on the least surrounding boxes left side that horizontal plane projects and following distance △ X and △ Z, and proportional zoom is carried out,
△ X ' and the △ Y " of formation；△ X ' and △ Y ' are the least surrounding boxes left side and following distance away from two-dimensional vector figure；By
This can draw visual angle point, direction point corresponding position coordinates in two-dimension vector map in three-dimensional scenic.
Claims (6)
1. a kind of three-dimensional linkage display methods of mobile terminal city two, it is characterised in that comprise the following steps：
(1) three dimensional file data are parsed and organized, establish three-dimensional scenic, show 3-D view；
(2) current visual angle point and direction point in three-dimensional scenic are obtained, real-time delivery is to two dimension view；
(3) two dimension view parsing two-dimensional vector data；With reference to current visual angle point in three-dimensional scenic and direction point horizontal plane throwing
Shadow position, real-time rendering two dimension view.
2. the three-dimensional linkage display methods of mobile terminal city two according to claim 1, it is characterised in that three dimensional file number
According to including three-dimensional coordinate data, three-dimensional coordinate data projection value in the horizontal plane and two-dimensional vector data are into corresponding ratio
Relation.
3. the three-dimensional linkage display methods of mobile terminal city two according to claim 1, it is characterised in that in step (1)
Three-dimensional scenic is established using OpenGL ES, shows 3-D view；Step (2) specifically comprises the following steps：
(2.1) according to the parameter and camera parameters of the OpenGL ES projection view frustums set, the lower bound center of hither plane is chosen
Point chooses the direction point of video camera as the direction point transmitted as the visual angle point transmitted；
(2.2) non-transformed three-dimensional corresponding with current visual angle point and direction point is gone out using scene change inverse of a matrix matrix computations
Position coordinates；
(2.3) the three-dimensional home position coordinate that step (2.2) is calculated passes to two dimension view in the projection value of horizontal plane.
4. the three-dimensional linkage display methods of mobile terminal city two according to claim 1, it is characterised in that three Balakrishnan
Number of packages evidence is obtained by GIS two-dimension vector maps；Height attributes are added in ArcGIS, and are stretched as using Sketch Up plug-in units
Threedimensional model file, opened in Sketch Up and carry out model editing, add texture, the three-dimensional general obj formatted files of export
As three dimensional file data.
5. the three-dimensional linkage display methods of mobile terminal city two according to claim 1, it is characterised in that 3-D view
Show that the display with two dimension view is completed by different threads；Step (2) realizes inter-thread communication by singleton class, by what is got
Current visual angle point and direction point real-time delivery show thread to two dimension view in three-dimensional scenic.
6. the three-dimensional linkage display methods of mobile terminal city two according to claim 1-5, it is characterised in that the movement
Terminal is the mobile embedded type equipment based on android system or IOS systems.
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| CN110222111A (en) * | 2019-05-30 | 2019-09-10 | 东南大学 | A kind of target characteristic data library visual analysis system |
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| CN108986212A (en) * | 2018-06-21 | 2018-12-11 | 东南大学 | Three-dimensional virtual terrain L OD model generation method based on crack elimination |
| CN108986212B (en) * | 2018-06-21 | 2022-05-13 | 东南大学 | Three-dimensional virtual terrain LOD model generation method based on crack elimination |
| CN109582752A (en) * | 2018-12-02 | 2019-04-05 | 甘肃万维信息技术有限责任公司 | One kind realizing two three-dimensional linkage methods based on map |
| CN109885369B (en) * | 2019-02-22 | 2022-04-29 | 北京知道创宇信息技术股份有限公司 | Image linkage method and device |
| CN109885369A (en) * | 2019-02-22 | 2019-06-14 | 北京知道创宇信息技术股份有限公司 | Image interlock method and device |
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| CN111643897A (en) * | 2020-04-26 | 2020-09-11 | 完美世界(北京)软件科技发展有限公司 | Information processing method, device, system and equipment |
| CN111643897B (en) * | 2020-04-26 | 2023-10-13 | 完美世界(北京)软件科技发展有限公司 | Information processing method, device, system and equipment |
| WO2022077790A1 (en) * | 2020-10-12 | 2022-04-21 | SZ DJI Technology Co., Ltd. | Representation data generation of three-dimensional mapping data |
| CN112269618A (en) * | 2020-11-12 | 2021-01-26 | 中煤航测遥感集团有限公司 | Method, device and equipment for switching two-dimensional scene and three-dimensional scene of station and storage medium |
| CN112269618B (en) * | 2020-11-12 | 2024-01-26 | 中煤航测遥感集团有限公司 | Station two-dimensional scene switching method, device, equipment and storage medium |
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