Question

JavaScript => public function SetAlphamaps(x: int, y: int, map: float[,,]): void;
C# => public void SetAlphamaps(int x, int y, float[,,] map);

Description 描述

Assign all splat values in the given map area.
在指定的区域内分配溅斑值。

The array supplied to this function determines the width and height of the portion to be replaced. The third dimension of the array corresponds to the number of splatmap textures.
数组提供给这个函数要替换的部分的宽度和高度。该三维数组与splatmap贴图数量相匹配。

JavaScript:

	// Blend the two terrain textures according to the steepness of
	// the slope at each point.
	function Start () {
		var map: float[,,] = new float[t.terrainData.alphamapWidth, t.terrainData.alphamapHeight, 2];
 
		// For each point on the alphamap...
		for (var y = 0; y < t.terrainData.alphamapHeight; y++) {
			for (var x = 0; x < t.terrainData.alphamapWidth; x++) {
				// Get the normalized terrain coordinate that
				// corresponds to the the point.
				var normX = x * 1.0 / (t.terrainData.alphamapWidth - 1);
				var normY = y * 1.0 / (t.terrainData.alphamapHeight - 1);
 
				// Get the steepness value at the normalized coordinate.
				var angle = t.terrainData.GetSteepness(normX, normY);
 
				// Steepness is given as an angle, 0..90 degrees. Divide
				// by 90 to get an alpha blending value in the range 0..1.
				var frac = angle / 90.0;
				map[x, y, 0] = frac;
				map[x, y, 1] = 1 - frac;
			}
		}
 
		t.terrainData.SetAlphamaps(0, 0, map);
	}

C#:

// Blend the two terrain textures according to the steepness of
	// the slope at each point.
	function Start () {
		var map: float[,,] = new float[t.terrainData.alphamapWidth, t.terrainData.alphamapHeight, 2];
 
		// For each point on the alphamap...
		for (var y = 0; y < t.terrainData.alphamapHeight; y++) {
			for (var x = 0; x < t.terrainData.alphamapWidth; x++) {
				// Get the normalized terrain coordinate that
				// corresponds to the the point.
				var normX = x * 1.0 / (t.terrainData.alphamapWidth - 1);
				var normY = y * 1.0 / (t.terrainData.alphamapHeight - 1);
 
				// Get the steepness value at the normalized coordinate.
				var angle = t.terrainData.GetSteepness(normX, normY);
 
				// Steepness is given as an angle, 0..90 degrees. Divide
				// by 90 to get an alpha blending value in the range 0..1.
				var frac = angle / 90.0;
				map[x, y, 0] = frac;
				map[x, y, 1] = 1 - frac;
			}
		}
 
		t.terrainData.SetAlphamaps(0, 0, map);
	}

terraindata