今天翻官方案例看到这个不错的功能 地形组件也有导入高度图的功能 但试了下没成功
这个脚本直接自建模型 放入张贴图(最好是灰度图,尺寸是2的次方)
做联机游戏可以考虑用高度图来共享地形
可惜是js写的 以后有空再翻译成C#吧
// This script is placed in public domain. The author takes no responsibility for any possible harm. var heightMap : Texture2D; var material : Material; var size = Vector3(200, 30, 200); function Start () { GenerateHeightmap(); } function GenerateHeightmap () { // Create the game object containing the renderer gameObject.AddComponent(MeshFilter); gameObject.AddComponent.<MeshRenderer>(); if (material) GetComponent.<Renderer>().material = material; else GetComponent.<Renderer>().material.color = Color.white; // Retrieve a mesh instance var mesh : Mesh = GetComponent(MeshFilter).mesh; var width : int = Mathf.Min(heightMap.width, 255); var height : int = Mathf.Min(heightMap.height, 255); var y = 0; var x = 0; // Build vertices and UVs var vertices = new Vector3[height * width]; var uv = new Vector2[height * width]; var tangents = new Vector4[height * width]; var uvScale = Vector2 (1.0 / (width - 1), 1.0 / (height - 1)); var sizeScale = Vector3 (size.x / (width - 1), size.y, size.z / (height - 1)); for (y=0;y<height;y++) { for (x=0;x<width;x++) { var pixelHeight = heightMap.GetPixel(x, y).grayscale; var vertex = Vector3 (x, pixelHeight, y); vertices[y*width + x] = Vector3.Scale(sizeScale, vertex); uv[y*width + x] = Vector2.Scale(Vector2 (x, y), uvScale); // Calculate tangent vector: a vector that goes from previous vertex // to next along X direction. We need tangents if we intend to // use bumpmap shaders on the mesh. var vertexL = Vector3( x-1, heightMap.GetPixel(x-1, y).grayscale, y ); var vertexR = Vector3( x+1, heightMap.GetPixel(x+1, y).grayscale, y ); var tan = Vector3.Scale( sizeScale, vertexR - vertexL ).normalized; tangents[y*width + x] = Vector4( tan.x, tan.y, tan.z, -1.0 ); } } // Assign them to the mesh mesh.vertices = vertices; mesh.uv = uv; // Build triangle indices: 3 indices into vertex array for each triangle var triangles = new int[(height - 1) * (width - 1) * 6]; var index = 0; for (y=0;y<height-1;y++) { for (x=0;x<width-1;x++) { // For each grid cell output two triangles triangles[index++] = (y * width) + x; triangles[index++] = ((y+1) * width) + x; triangles[index++] = (y * width) + x + 1; triangles[index++] = ((y+1) * width) + x; triangles[index++] = ((y+1) * width) + x + 1; triangles[index++] = (y * width) + x + 1; } } // And assign them to the mesh mesh.triangles = triangles; // Auto-calculate vertex normals from the mesh mesh.RecalculateNormals(); // Assign tangents after recalculating normals mesh.tangents = tangents; }