| xBase | 要设置的高度贴图样本的第一个 x 索引。 |
| yBase | 要设置的高度贴图样本的第一个 y 索引。 |
| heights | 要设置的高度贴图样本数组（值的范围为 0 到 1，数组的索引为 [y,x]）。 |
设置一个高度贴图样本数组。
使用一个二维的高度贴图样本数组设置高度贴图数据。样本使用范围从 0 到 1 的浮点值表示。受影响的区域由数组维度和 xBase 及 yBase 的起点定义。高度数组的索引为 [y,x]。
每次调用时，该方法重新计算地形的所有 LOD 和植被信息（可能需要较多的计算资源）。在交互式编辑场景中，最好在用户完成编辑操作时调用 TerrainData.SetHeightsDelayLOD，然后调用 TerrainData.SyncHeightmap。
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