与动画绘制顶点的多边形 [英] Animating a polygon drawn with vertices

问题描述

第一关：我有一个问题创建在XNA 二维多边形但我沮丧的研究和测试了一天之后回答了它自己。在那里，你可以找到code我现在。因此，这里是我的下一个问题，因为我无法找到任何关于它。我怎么一个动画 VertexPositionColor [] 。

First off: I had another question Creating a 2D polygon in XNA but I answered it myself after a day of frustrating research and testing. There you can find the code I have right now. So here is my next question, as I can't find anything about it. How do I animate a VertexPositionColor[].

推荐答案

要动画一个VertexPositionColor []，你真正需要做的是适当地修改数组的元素，然后在DrawUserPrimitives使用新的值（）调用

To animate a VertexPositionColor[], all you really need to do is modify the elements of the array appropriately and then use the new values in your DrawUserPrimitives() call.

例如，在你的游戏的更新方法：

For example, in the Update method of your game:

for ( int index = 0; index < vertices.Length; ++index )
{
    vertices[ index ].Color *= (float)System.Math.Sin( gameTime.ElapsedGameTime.Seconds / 60 );
}

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