CN103995644A - Method for achieving linkage fusion of three-dimensional geographic information system and three-dimensional graphic system - Google Patents
Method for achieving linkage fusion of three-dimensional geographic information system and three-dimensional graphic system Download PDFInfo
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- CN103995644A CN103995644A CN201410222496.7A CN201410222496A CN103995644A CN 103995644 A CN103995644 A CN 103995644A CN 201410222496 A CN201410222496 A CN 201410222496A CN 103995644 A CN103995644 A CN 103995644A
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Abstract
The invention relates to the field of computer software application and discloses a method for achieving linkage fusion of a three-dimensional geographic information system and a three-dimensional graphic system. By adopting the method, view point linkage between the three-dimensional GIS and the three-dimensional graphic system is achieved, accordingly the bounce sense of a user performing the three-dimensional GIS and the three-dimensional graphic system switching operation is decreased or eliminated, and the smooth transition experience effect during system switching is achieved. The method enables windows of the three-dimensional GIS and the three-dimensional graphic system to be overlapped, and a window of one system is displayed by judging a distance between a view point and an observed object and through dynamic switching. In addition, by synchronizing the view point positions and directions of two systems, the view point in the novel system is identical to the view point of the system before switching in position and direction. The method is suitable for integration of the three-dimensional geographic information system and the three-dimensional graphic system, different three-dimensional geographic information systems and different three-dimensional graphic systems.
Description
Technical field
The present invention relates to computer software application field, particularly a kind of method that realizes three-dimensional geographic information system and 3 d graphics system interlock fusion.
Background technology
At present, three-dimensional geographic information system (GIS) is commonly used to show macroscopical geographical image coordinate and geography information parameter, and 3 d graphics system is used for showing three-dimensional model and the interactive operation to model becoming more meticulous.In some practical applications, conventionally both needed to show macroscopical geography information, need again to show careful three-dimensional model, if being combined to use, the two can reach this user demand.
At present, based on two-dimensional map and more with the system of the interlock fusion of three-dimensional geographic information system, two-dimensional map and three-dimensional picture interlock.But also there is not the method that between three-dimensional geographic information system and 3 d graphics system, interlock is merged.
Summary of the invention
Technical matters to be solved by this invention is: propose a kind of method that realizes three-dimensional geographic information system and 3 d graphics system interlock fusion, realize viewpoint interlock between three-dimension GIS and 3 d graphics system, thereby reduce or eliminate the beat sensation of user when operation three-dimension GIS and three-dimensional picture switching, reach the experience effect seamlessly transitting while switching between system.
The present invention solves the problems of the technologies described above adopted scheme:
Realize the method that three-dimensional geographic information system and 3 d graphics system interlock are merged, comprise the following steps:
A. three-dimension GIS and three-dimensional picture are integrated in to same viewport region, the two display position is identical with area size;
B. set a reference point, if when current view point is greater than certain setting value D2 to the distance between reference point, is switched to three-dimension GIS window and shows; If current view point between reference point distance while being less than certain setting value D1, be switched to three-dimensional picture window and show, wherein D2 > D1;
C. when carrying out three-dimension GIS and three-dimensional picture windows exchange, current view point position and direction are transformed in the system of new switching, and in the new system of switching, viewpoint position and direction are set, make the position of viewpoint in the new system of switching consistent with position and the direction of the front place of direction and switching system.
Concrete, in step b, described setting value D2 is the threshold value from three-dimensional picture windows exchange to three-dimension GIS window, described setting value D1 is the threshold value from three-dimension GIS windows exchange to three-dimensional picture window.
Concrete, in step c, when carrying out three-dimension GIS and three-dimensional picture windows exchange, by the respective coordinates conversion between two systems, make the position of viewpoint in the new system of switching consistent with position and the direction of the front place of direction and switching system.
Concrete, in step b, the switching between three-dimension GIS window and three-dimensional picture window can also realize by manual switchover.
The invention has the beneficial effects as follows: realized the interlock of three-dimension GIS and three-dimensional picture, thereby reduced or eliminate the beat sensation of user when operation three-dimension GIS and three-dimensional picture switching, reach the experience effect seamlessly transitting while switching between system; For integrated three-dimension GIS system macroscopic view scene and the 3 d graphics system scene that becomes more meticulous provides a kind of supporting method.
Embodiment
The present invention is intended to propose a kind of three-dimensional geographic information system and 3 d graphics system interlock fusion method.The method is by the windows overlay of three-dimensional geographic information system and 3 d graphics system, by the distance between judgement viewpoint and observed object, dynamically switch the window that shows one of them system, thereby reach the geography information that can check summary, can check again meticulous three-dimensional model information object.Meanwhile, by viewpoint position and direction in synchronous two systems, make the position of viewpoint in new system consistent with position and the direction of the front place of direction and switching system.Reach the experience effect seamlessly transitting while switching between system.For the three-dimensional geographic information system scene of integrated demonstration macroscopic view and the 3 d graphics system scene that becomes more meticulous provides a kind of supporting method.
Its specific implementation step comprises:
1, three-dimension GIS and three-dimensional picture are integrated in to same viewport region, the two display position is identical with area size;
2, set a reference point as target, when the distance of user's current view point distance reference point is greater than certain setting value, show three-dimension GIS window; When the distance of user's current view point distance reference point position is less than certain setting value, show three-dimensional picture window;
3, when carrying out three-dimension GIS and three-dimensional picture windows exchange, viewpoint position and direction are transformed in new system, and in new system, viewpoint position and direction are set, make the position of viewpoint in new system consistent with position and the direction of the front place of direction and switching system.
Embodiment:
In this example, three-dimension GIS and three-dimensional picture are integrated in to same viewport region, the position that three-dimensional picture window presents with three-dimension GIS window is identical with size, and the same time only shows wherein some windows; By control, show that three-dimension GIS window and three-dimensional picture window reach the effect that scene is switched.
The condition of switching between three-dimension GIS and three-dimensional picture is set: the threshold value D1 that three-dimension GIS is switched to three-dimensional picture is set, and three-dimensional picture is switched to three-dimension GIS threshold value D2, wherein D2>D1.Calculate in real time current view point position to the distance D t of reference point locations, when Dt<D1, by three-dimension GIS windows exchange to three-dimensional picture window; When Dt>D2, by three-dimensional picture windows exchange to three-dimension GIS window.
Aim at three-dimension GIS coordinate and three-dimensional picture coordinate: conventionally, three-dimension GIS adopts the geodetic coordinate system of Gauss's coordinate or sphere, and 3 d graphics system adopts the three-dimensional Cartesian coordinates of self.Therefore when windows exchange, carry out coordinate and change mutually, make the position of viewpoint in new system consistent with position and the direction of the front place of direction and switching system.
It should be noted that, if D1≤Dt≤D2, the state that keeps current window, do not switch, if current view point position to the distance between reference point locations between D1 and D2, maintain so current window state, even current window state is that three-dimension GIS window just also keeps this Window state not switch, if current window state is three-dimensional picture window, just also keeps this Window state not switch.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (4)
1. realize the method that three-dimensional geographic information system and 3 d graphics system interlock are merged, it is characterized in that, comprise the following steps:
A. three-dimension GIS and three-dimensional picture are integrated in to same viewport region, the two display position is identical with area size;
B. set a reference point, if when current view point is greater than certain setting value D2 to the distance between reference point, is switched to three-dimension GIS window and shows; If current view point between reference point distance while being less than certain setting value D1, be switched to three-dimensional picture window and show, wherein D2 > D1;
C. when carrying out three-dimension GIS and three-dimensional picture windows exchange, current view point position and direction are transformed in the system of new switching, and in the new system of switching, viewpoint position and direction are set, make the position of viewpoint in the new system of switching consistent with position and the direction of the front place of direction and switching system.
2. the method for claim 1, is characterized in that, in step b, described setting value D2 is the threshold value from three-dimensional picture windows exchange to three-dimension GIS window, and described setting value D1 is the threshold value from three-dimension GIS windows exchange to three-dimensional picture window.
3. the method for claim 1, is characterized in that, in step b, the switching between three-dimension GIS window and three-dimensional picture window can also realize by manual switchover.
4. the method as described in claim 1 or 2 or 3, it is characterized in that, in step c, when carrying out three-dimension GIS and three-dimensional picture windows exchange, by the respective coordinates conversion between two systems, make the position of viewpoint in the new system of switching consistent with position and the direction of the front place of direction and switching system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104881421A (en) * | 2014-12-15 | 2015-09-02 | 深圳市腾讯计算机系统有限公司 | Three-dimensional image switching method and three-dimensional image switching 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 |
| CN113626899A (en) * | 2021-07-27 | 2021-11-09 | 北京优比智成建筑科技有限公司 | Navisthrocks-based model and drawing synchronous display method, device, equipment and medium |
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| JP2006084184A (en) * | 2004-09-14 | 2006-03-30 | Ntt Docomo Inc | Three-dimensional gis navigation method, three-dimensional gis navigation server and three-dimensional gis navigation system |
| CN103399928A (en) * | 2013-08-07 | 2013-11-20 | 中国水电顾问集团成都勘测设计研究院 | Method for achieving linkage between two-dimensional map and three-dimensional map on Web page |
| CN103440118B (en) * | 2013-08-30 | 2016-11-09 | 天津市测绘院 | The multi-level display packing of paging based on three-dimensional digital city system model |
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| 谢文辉等: "C#实现上海海洋功能区划二维、三维地理信息系统", 《华东六省一市测绘学会第十一次学术交流会论文集》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881421A (en) * | 2014-12-15 | 2015-09-02 | 深圳市腾讯计算机系统有限公司 | Three-dimensional image switching method and three-dimensional image switching device |
| CN104881421B (en) * | 2014-12-15 | 2018-04-27 | 深圳市腾讯计算机系统有限公司 | The switching method and device of a kind of 3-D graphic |
| 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 |
| 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 |
| CN113626899A (en) * | 2021-07-27 | 2021-11-09 | 北京优比智成建筑科技有限公司 | Navisthrocks-based model and drawing synchronous display method, device, equipment and medium |
| CN113626899B (en) * | 2021-07-27 | 2022-07-26 | 北京优比智成建筑科技有限公司 | Navisthrocks-based model and drawing synchronous display method, device, equipment and medium |
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Inventor after: Zhong Weiming Inventor after: Zhang Zhiwei Inventor after: Chen Wantao Inventor after: Zhu Chen Inventor after: Huang Zhipeng Inventor after: Liang Jixin Inventor before: Zhong Weiming Inventor before: Zhang Zhiwei Inventor before: Chen Wantao Inventor before: Huang Zhipeng Inventor before: Liang Jixin |
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Effective date of registration: 20220424 Address after: 511400 rooms 2001, 2002, 2003, 2004, 2005, 2006, 2007 and 2008, No. 8, Jingang Avenue, Nansha street, Nansha District, Guangzhou City, Guangdong Province (office only) Patentee after: China Power Construction Group Urban Planning and Design Institute Co.,Ltd. Address before: No.1 Huanhua North Road, Qingyang District, Chengdu, Sichuan 610072 Patentee before: POWERCHINA Chengdu Engineering Co.,Ltd. |