Real landform fast modeling method and landslide visualization technology

Abstract

The invention discloses a visualized landslide simulation method for fast generating a real landform model, simulating a real landform environment and, on the basis of that, performing Boolean operation and rigid body breaking. The visualized landslide simulation method comprises steps of importing a landform elevation grey-scale map into a Blender to obtain a landform model grids and performing adjustment on the grids, automatically synthesizing a texture image to draw UV maps for a landform curve surface to simulate different landforms, (2) designing a fragment generation pipeline, wherein the fragment generation pipeline designing comprises steps of using a landslide body obtained through the Boolean operation based on a Sutherland-Hodgman algorithm to transform the collided rigid body into a point cloud on a fundamental basis, performing triangularization on the point cloud to obtain a Thiessen polygon and generating a Voronoi cells to simulate landside fragments, and (3) fitting the landform data to generate fragment interactive blocking surfaces, performing a combination operation with the fragments and generating a successive frame animation.

Description

technical field [0001] The invention belongs to the field of computer image processing technology and computer animation generation, and relates to a fast modeling method of real terrain and a landslide simulation method based on Boolean operation and rigid body breaking. Background technique [0002] The initial simulation of the terrain is to read the data in the DEM file, convert the coordinates of the real environment into the coordinates in the computer 3D world and display them on the screen one by one, thus obtaining the point cloud model of the terrain. However, the model obtained by this method is discrete, which is not conducive to observation and further correction, and when the amount of data is large, this method is slow. Therefore, 3D modeling software is often used to build terrain models now. [0003] In 3D modeling software, the color data of the image can be converted into 3D coordinate data. Using this, the terrain elevation map can be converted into a 3D...

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Problems solved by technology

[0004] For the simulation of landforms, natural landscape models such as vegetation, soil and rocks can be added to the surface. The results obtained by this method are usually very close to the real natural environment, but it is difficult. At the same time, these models will also affect the simulation of the landslide process, resulting in rendering speed. slow down

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