koobas.hobune.stream
Can i save the mesh generated by the heighmap texture and material?and iff so how?
I dont know scripting(I am just an copy-paste guy :)because it's hard to learn c# or javascrip and its not in my language..I'm Romanian) and a good explanation on how to do it would be very helpful .. Here is the script.Thanx..
// 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) renderer.material = material; else 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;
}
it is (all that code is above the code box) - you just need to select all the code and hit the code button (the little button with 0s and 1s on)
You just need to do something along the lines of this:
AssetDatabase.CreateAsset(mesh, meshPrefabPath);
AssetDatabase.SaveAssets();
Where meshPrefabPath is a path as string which is relative to the project folder, and needs the .asset extension
e.g. var meshPrefabPath = "Assets/MyNewMesh.asset";
Note that if you do that, your script has to be an editor script, not a runtime script.
which bit don't you understand? the code above should work as it is just pasted in, and the editor script part is a little more complex, but can be added in
lets say i whant to make a wall with the proper texture and material and make a relief on it and then save it ..because i think that bumped shaders dont work on my computer (i dont have vertex shader supported idk iff thats the cause) and at the graphics emulation i have just S$$anonymous$$ 1.4 idk...sounds poor.
you'd paste those lines at the very bottom. and yes, your graphics card is pretty old :P
