| 基于层次映射的三角形中点位移法 |
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| 引用本文： | 习雅思,张佑生.基于层次映射的三角形中点位移法[J].合肥工业大学学报(自然科学版),2006,29(12):1499-1502. |
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| 作者姓名： | 习雅思 张佑生 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,安徽,合肥,230009 |
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| 摘 要： | 三角形中点位移法生成三维地形时,会产生裂缝,且计算和渲染的实时性不高,计算机内存利用率低下.文章在三角形中点位移法的基础上,提出层次映射的概念,将递归转化为非递归的分层迭代来处理;用该方法能够较好地解决裂缝以及计算和渲染实时性不高的问题,提高系统的空间利用率,并且通过实验找到位移比率的一些取值范围,在不同的范围内设置位移比率,可以模拟多种不同的地形.
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| 关 键 词： | 非递归 层次映射 三角形中点位移法 分形地形 |
| 文章编号： | 1003-5060(2006)12-1499-05 |
| 修稿时间： | 2006年4月19日 |
Triangular midpoint-displacement method based on level-mapping |
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| XI Ya-si,ZHANG You-sheng.Triangular midpoint-displacement method based on level-mapping[J].Journal of Hefei University of Technology(Natural Science),2006,29(12):1499-1502. |
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| Authors: | XI Ya-si ZHANG You-sheng |
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| Abstract: | The triangular midpoint-displacement method of generating 3-D terrain which is recursive may produce cracks,and it is inefficient in real-time calculation and rendering as well as memory space utilization.Based on the triangular fractal-displacement method,the concept of level-mapping is introduced and a non-recursive level-iterative method proposed which can significantly improve the speed of real-time calculation and save computer memory space.Through experiment several ranges are specified within which the displacement parameter can be chosen to simulate different kinds of terrain. |
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| Keywords: | non-recursion level-mapping triangular midpoint-displacement method fractal terrain |
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