WPF-based three-dimensional terrain high-efficiency gradient coloring method

Abstract

The invention relates to a WPF-based three-dimensional terrain high-efficiency gradient coloring method. The method comprises: S1, according to a customized gradient color tape color grade, a gradientbitmap with the size of 64*64 is generated in a memory based on a specific algorithm and the generated bitmap is used as an image source of an image brush; S2, a mapping function of the color valuescorresponding to different elevation values and the position in the gradient bitmap is constructed; S3, according to terrain elevation information, a triangular surface forming a three-dimensional terrain model is generated, a texture corresponding to each triangle unit is generated based on the image brush and the mapping function that are obtained at the S1 and S2, and a Geometry Model 3D instance of the three-dimensional terrain model is constructed; and S4, with the formed Geometry Model 3D instance, a three-dimensional canvas, a perspective, lighting and other elements are set in WPF tocomplete construction of a three-dimensional terrain model with gradient coloring based on elevation information. According to the invention, on the basis of the WPF framework, system resources are saved greatly; the three-dimensional rendering efficiency is improved obviously; the color transition processing method of the adjacent triangular units forming the three-dimensional terrain model is simple; and the color transition effect is good.

Description

technical field [0001] The invention relates to a WPF-based high-efficiency gradient coloring method for three-dimensional terrain, which belongs to the field of computer three-dimensional display. Background technique [0002] WPF (Windows Presentation Foundation) is a new generation of graphics system from Microsoft. WPF is further encapsulated on the basis of the DirectX graphics engine, and provides a set of classes for easily building three-dimensional graphics and user interfaces. Compared with the underlying graphics APIs such as OpenGL and DirectX, WPF can be used to construct a 3D display system more conveniently and quickly. However, due to the high degree of encapsulation of WPF, the three-dimensional rendering efficiency is lost. [0003] In the practical application of informatization in industries such as water conservancy, geology, transportation, and land, it is often necessary to display terrain elements in three-dimensional space and to perform gradient c...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a three-dimensional graphics gradient coloring method based on the WPF framework, to solve the problems of large system resource consumption and low rendering efficiency when performing gradient coloring on a large number of triangle units, and to achieve efficient and beautiful three-dimensional terrain display

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