Question

JavaScript => public function SetDetailLayer(xBase: int, yBase: int, layer: int, details: int[,]): void;
C# => public void SetDetailLayer(int xBase, int yBase, int layer, int[,] details);

Parameters 参数

Description 描述

Sets the detail layer density map.
设置细节层的密度图。

The Terrain system uses detail layer density maps. Each map is essentially a grayscale image where each pixel value denotes the number of detail objects that will be procedurally placed terrain area that corresponds to the pixel. Since several different detail types may be used, the map is arranged into “layers” - the array indices of the layers are determined by the order of the detail types defined in the Terrain inspector (ie, when the Paint Details tool is selected).
地形系统使用细节层密度图。每贴图实际上是每像素值表示的地形区域中程序放置的细节对象数量的灰度图。对应的像素，可能被几个不同的细节类型使用，贴图被排列成‘层’，数组的索引的层是由地形面板中细节类型的定义的顺序决定的(即当油漆细节工具被选中)。

JavaScript:

// Set all pixels in a detail map below a certain threshold to zero.
	function DetailMapCutoff(t: Terrain, threshold: float) {
		// Get all of layer zero.
		var map = t.terrainData.GetDetailLayer(0, 0, t.terrainData.detailWidth, t.terrainData.detailHeight, 0);
 
		// For each pixel in the detail map...
		for (var y = 0; y < t.terrainData.detailHeight; y++) {
			for (var x = 0; x < t.terrainData.detailWidth; x++) {
				// If the pixel value is below the threshold then
				// set it to zero.
				if (map[x, y] < threshold) {
					map[x, y] = 0.0;
				}
			}
		}
 
		// Assign the modified map back.
		t.terrainData.SetDetailLayer(0, 0, 0, map);
	}

C#:

	// Set all pixels in a detail map below a certain threshold to zero.
	void DetailMapCutoff(Terrain t, float threshold) {
		// Get all of layer zero.
		var map = t.terrainData.GetDetailLayer(0, 0, t.terrainData.detailWidth, t.terrainData.detailHeight, 0);
 
		// For each pixel in the detail map...
		for (int y = 0; y < t.terrainData.detailHeight; y++) {
			for (int x = 0; x < t.terrainData.detailWidth; x++) {
				// If the pixel value is below the threshold then
				// set it to zero.
				if (map[x, y] < threshold) {
					map[x, y] = 0.0;
				}
			}
		}
 
		// Assign the modified map back.
		t.terrainData.SetDetailLayer(0, 0, 0, map);
	}

terraindata