一个粒子系统可以模拟并渲染许多称为粒子的小图像或网格以产生视觉效果。系统中的每个粒子代表效果中的单个图形元素。系统共同模拟每个粒子以产生完整效果的印象。
需要创建诸如火、烟或液体之类的动态对象时,由于很难用网格 (3D) 或精灵 (2D) 描绘这种对象,因此粒子系统非常有用。网格和精灵更适合于描绘诸如房屋或汽车之类的实体对象。
本节包含以下相关信息:
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