摘要
使用多桩段边坡的角点数据插值生成边坡场景的地形数据,运用OpenGL的自动化技术实现了多桩段边坡的3维建模。使用分块纹理映射的方法,克服了OpenGL渲染机对影像纹理大小的限制。应用低分辨率纹理映射和选择边坡增强纹理分辨率的映射的方法实现了场景的快速建立和漫游,解决了对多桩段边坡的大场景渲染效率与分析时需要的视觉效果的冲突问题。研究成果能够被用于实际工程中,为边坡的辅助设计提供了支持。
In this paper,the vertex data of multi - hub Slopes are used to create the terrain of slope background scene through interpolation method, and the 3D model of slopes can be established by OpenGL. The limit of OpenGL on the size of image texture can be resolved using block texture method. The scene can be established fleetly by means of low resolution texture mapping and the selected enhanced texture mapping,and the conflict between the drawing efficiency of large scene and the visual effect of analysis can also be resolved. The result can be used in practice project and be an assistant tool for hub slopes design.
出处
《测绘与空间地理信息》
2007年第6期101-103,106,共4页
Geomatics & Spatial Information Technology
