Terrains

Unity Engine
1

Okay I’m training with Unity on the walker boys site, right now I’m just taking an angry birds break. I am on the interface app tutorial(learning unity), I’ve been stuck on the Terrain Tutorials for about five… six hours, because I can’t find a .RAW file on my local hard drive, I’m not sure if Unity already installed the terrains (.RAW files), but I’m not sure where I can find a software to convert Height Map .PNG files into .RAW files.

2 
@MenuItem ("Terrain/Heightmap From Texture")



static function ApplyHeightmap () {

    var heightmap : Texture2D = Selection.activeObject as Texture2D;

    if (heightmap == null) { 

        EditorUtility.DisplayDialog("No texture selected", "Please select a texture.", "Cancel"); 

        return; 

    }

    Undo.RegisterUndo (Terrain.activeTerrain.terrainData, "Heightmap From Texture");



    var terrain = Terrain.activeTerrain.terrainData;

    var w = heightmap.width;

    var h = heightmap.height;

    var w2 = terrain.heightmapWidth;

    var heightmapData = terrain.GetHeights(0, 0, w2, w2);

    var mapColors = heightmap.GetPixels();

    var map = new Color[w2 * w2];



    if (w2 != w || h != w) {

        // Resize using nearest-neighbor scaling if texture has no filtering

        if (heightmap.filterMode == FilterMode.Trilinear) {

            var dx : float = parseFloat(w)/w2;

            var dy : float = parseFloat(h)/w2;

            for (y = 0; y < w2; y++) {

                if (y%20 == 0) {

                    EditorUtility.DisplayProgressBar("Resize", "Calculating texture", Mathf.InverseLerp(0.0, w2, y));

                }

                var thisY = parseInt(dy*y)*w;

                var yw = y*w2;

                for (x = 0; x < w2; x++) {

                    map[yw + x] = mapColors[thisY + dx*x];

                }

            }

        }

        // Otherwise resize using bilinear filtering

        else {

            var ratioX = 1.0/(parseFloat(w2)/(w-1));

            var ratioY = 1.0/(parseFloat(w2)/(h-1));

            for (y = 0; y < w2; y++) {

                if (y%20 == 0) {

                    EditorUtility.DisplayProgressBar("Resize", "Calculating texture", Mathf.InverseLerp(0.0, w2, y));

                }

                var yy = Mathf.Floor(y*ratioY);

                var y1 = yy*w;

                var y2 = (yy+1)*w;

                yw = y*w2;

                for (x = 0; x < w2; x++) {

                    var xx = Mathf.Floor(x*ratioX);

        

                    var bl = mapColors[y1 + xx];

                    var br = mapColors[y1 + xx+1]; 

                    var tl = mapColors[y2 + xx];

                    var tr = mapColors[y2 + xx+1];

                    

                    var xLerp = x*ratioX-xx;

                    map[yw + x] = Color.Lerp(Color.Lerp(bl, br, xLerp), Color.Lerp(tl, tr, xLerp), y*ratioY-yy);

                }

            }

        }

        EditorUtility.ClearProgressBar();

    }

    else {

        // Use original if no resize is needed

        map = mapColors;

    }

 

    // Assign texture data to heightmap

    for (y = 0; y < w2; y++) {

        for (x = 0; x < w2; x++) {

            heightmapData[y,x] = map[y*w2+x].grayscale;

        }

    }

    terrain.SetHeights(0, 0, heightmapData);

}
3

wait I think you misunderstood me, I just needed a to find a .RAW Height map file… I haven’t written any code yet(I’m learning the interface of Unity)