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  1. Chapter 7. Rendering Countless Blades of Waving Grass

    • Now let us see how to build a texture for the task we have to solve. The required texture has to cluster several blades of grass; otherwise, it will have large transparent areas. We obtain this simply by draw… See more

    2 Grass Objects

    This section explains how to combine some polygons, mapped with the grass texture built in … See more

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    1 The General Idea

    In order to achieve a highly realistic animation, we are going to use a calculation based on trigonometric functions, especially sine and cosine. This calculation … See more

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    2 Animation Per Cluster of Grass Objects

    The following method was used in the Codecreatures Benchmark and produces a realistic look with gusting winds that constantly change strength and direction. Here, the s… See more

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    Pros

    Complex animation calculations are made through CPU-based algorithms.
    There are no distortions, because of the constant distance of the upper vertices of a polygon.… See more

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