/*public Vector2 GetAreaNormal (int cx, int cz, int range)
{
CoordRect areaRect = new CoordRect(cx-range-1, cz-range-1, cx+range, cz+range);
CoordRect intersection = CoordRect.Intersect(rect, areaRect);
float nx = 0; float nz = 0;
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
nx +=
}
}*/
#endregion
#region Sorting
// ???
public bool[] InRect (CoordRect area = new CoordRect())
{
Matrix2<bool> result = new Matrix2<bool>(rect);
CoordRect intersection = CoordRect.Intersect(rect,area);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
result[x,z] = true;
return result.array;
}
public void Add(Vector3 pos, float radius)
{
//adding heights
float pixelSize = terrain.terrainData.size.x / terrain.terrainData.heightmapResolution;
CoordRect rect = (pos - terrain.transform.localPosition).ToCoordRect(radius, pixelSize);
CoordRect intersection = CoordRect.Intersect(rect, new CoordRect(0, 0, terrain.terrainData.heightmapResolution, terrain.terrainData.heightmapResolution));
if (intersection.size.x > 0 && intersection.size.z > 0)
{
int numHeightCells = Mathf.CeilToInt(1f * terrain.terrainData.heightmapResolution / cellSize);
if (heights == null)
{
heights = new Matrix2 <float[, ]>(numHeightCells, numHeightCells);
}
foreach (Coord cellCoord in intersection.Cells(cellSize))
{
if (heights[cellCoord] != null)
{
continue;
}
heights[cellCoord] = terrain.terrainData.SafeGetHeights(cellCoord.x * cellSize, cellCoord.z * cellSize, cellSize, cellSize);
}
}
//adding splats
if (terrain.terrainData.alphamapLayers == 0)
{
return;
}
pixelSize = terrain.terrainData.size.x / terrain.terrainData.alphamapResolution;
rect = (pos - terrain.transform.localPosition).ToCoordRect(radius, pixelSize);
intersection = CoordRect.Intersect(rect, new CoordRect(0, 0, terrain.terrainData.alphamapResolution, terrain.terrainData.alphamapResolution));
if (intersection.size.x > 0 && intersection.size.z > 0)
{
int numSplatCells = Mathf.CeilToInt(1f * terrain.terrainData.alphamapResolution / cellSize);
if (splats == null)
{
splats = new Matrix2 <float[, , ]>(numSplatCells, numSplatCells);
}
foreach (Coord cellCoord in intersection.Cells(cellSize))
{
if (splats[cellCoord] != null)
{
continue;
}
splats[cellCoord] = terrain.terrainData.SafeGetAlphamaps(cellCoord.x * cellSize, cellCoord.z * cellSize, cellSize, cellSize);
}
}
}
static public void AddSplatmaps (TerrainData data, Matrix[] matrices, int[] channels, float[] opacity, float[,,] array=null, float brushFallof=0.5f)
{
int numChannels = data.alphamapLayers;
bool[] usedChannels = new bool[numChannels];
for (int i=0; i<channels.Length; i++) usedChannels[channels[i]] = true;
float[] slice = new float[numChannels];
Coord dataSize = new Coord(data.alphamapResolution, data.alphamapResolution);
CoordRect dataRect = new CoordRect(new Coord(0,0), dataSize);
CoordRect intersection = CoordRect.Intersect(dataRect, matrices[0].rect);
if (array==null) array = data.GetAlphamaps(intersection.offset.x, intersection.offset.z, intersection.size.x, intersection.size.z);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
//calculating fallof and opacity
float fallofFactor = matrices[0].Fallof(x,z,brushFallof);
if (Mathf.Approximately(fallofFactor,0)) continue;
//reading slice
for (int c=0; c<numChannels; c++) slice[c] = array[z-min.z, x-min.x, c];
//converting matrices to additive
for (int i=0; i<matrices.Length; i++) matrices[i][x,z] = Mathf.Max(0, matrices[i][x,z] - slice[channels[i]]);
//apply fallof
for (int i=0; i<matrices.Length; i++) matrices[i][x,z] *= fallofFactor * opacity[i];
//calculating sum of adding values
float addedSum = 0; //the sum of adding channels
for (int i=0; i<matrices.Length; i++) addedSum += matrices[i][x,z];
//if (addedSum < 0.00001f) continue; //no need to do anything
//if addedsum exceeds 1 - equalizing matrices
if (addedSum > 1f)
{ for (int i=0; i<matrices.Length; i++) matrices[i][x,z] /= addedSum; addedSum=1; }
//multiplying all values on a remaining amount
float multiplier = 1-addedSum;
for (int c=0; c<numChannels; c++) slice[c] *= multiplier;
//adding matrices
for (int i=0; i<matrices.Length; i++) slice[channels[i]] += matrices[i][x,z];
//saving slice
for (int c=0; c<numChannels; c++) array[z-min.z, x-min.x, c] = slice[c];
}
data.SetAlphamaps(intersection.offset.x, intersection.offset.z, array);
}
public void Fill(Matrix2 <T> m, bool removeBorders = false)
{
CoordRect intersection = CoordRect.Intersect(rect, m.rect);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x = min.x; x < max.x; x++)
{
for (int z = min.z; z < max.z; z++)
{
this[x, z] = m[x, z];
}
}
if (removeBorders)
{
RemoveBorders(intersection);
}
}
/*public void FromTexture (Texture2D texture, Coord textureOffset=new Coord(), bool fillBorders=false)
{
Coord textureSize = new Coord(texture.width, texture.height);
CoordRect textureRect = new CoordRect(textureOffset, textureSize);
CoordRect intersection = CoordRect.Intersect(textureRect, rect);
Color[] colors = texture.GetPixels(intersection.offset.x - textureOffset.x, intersection.offset.z - textureOffset.z, intersection.size.x, intersection.size.z);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
int tx = x-min.x; int tz = z-min.z;
Color col = colors[tz*(max.x-min.x) + tx];
this[x,z] = (col.r+col.g+col.b)/3;
}
if (fillBorders) RemoveBorders(intersection);
}*/
public void FromTexture (Texture2D texture)
{
CoordRect textureRect = new CoordRect(0,0, texture.width, texture.height);
CoordRect intersection = CoordRect.Intersect(textureRect, rect);
Color[] colors = texture.GetPixels(intersection.offset.x, intersection.offset.z, intersection.size.x, intersection.size.z);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
int tx = x-min.x; int tz = z-min.z;
Color col = colors[tz*(max.x-min.x) + tx];
this[x,z] = (col.r+col.g+col.b)/3;
}
}
public float[,,] ReadSplatmap (TerrainData data, int channel, float[,,] array=null)
{
CoordRect intersection = CoordRect.Intersect(rect, new CoordRect(0,0,data.alphamapResolution, data.alphamapResolution));
//get heights
if (array==null) array = data.GetAlphamaps(intersection.offset.x, intersection.offset.z, intersection.size.x, intersection.size.z); //returns x and z swapped
//reading array
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
this[x,z] = array[z-min.z, x-min.x, channel];
//removing borders
RemoveBorders(intersection);
return array;
}
public float[,] ReadHeighmap (TerrainData data, float height=1)
{
CoordRect intersection = CoordRect.Intersect(rect, new CoordRect(0,0,data.heightmapResolution, data.heightmapResolution));
//get heights
float[,] array = data.GetHeights(intersection.offset.x, intersection.offset.z, intersection.size.x, intersection.size.z); //returns x and z swapped
//reading 2d array
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
this[x,z] = array[z-min.z, x-min.x] * height;
//removing borders
RemoveBorders(intersection);
return array;
}
public void WriteHeightmap (TerrainData data, float[,] array=null, float brushFallof=0.5f)
{
CoordRect intersection = CoordRect.Intersect(rect, new CoordRect(0,0,data.heightmapResolution, data.heightmapResolution));
//checking ref array
if (array == null || array.Length != intersection.size.x*intersection.size.z) array = new float[intersection.size.z,intersection.size.x]; //x and z swapped
//write to 2d array
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
float fallofFactor = Fallof(x,z,brushFallof);
if (Mathf.Approximately(fallofFactor,0)) continue;
array[z-min.z, x-min.x] = this[x,z]*fallofFactor + array[z-min.z, x-min.x]*(1-fallofFactor);
//array[z-min.z, x-min.x] += this[x,z];
}
data.SetHeights(intersection.offset.x, intersection.offset.z, array);
}
public void ToTexture (Texture2D texture=null, Color[] colors=null, float rangeMin=0, float rangeMax=1, bool resizeTexture=false)
{
//creating or resizing texture
if (texture == null) texture = new Texture2D(rect.size.x, rect.size.z);
if (resizeTexture) texture.Resize(rect.size.x, rect.size.z);
//finding matrix-texture intersection
Coord textureSize = new Coord(texture.width, texture.height);
CoordRect textureRect = new CoordRect(new Coord(0,0), textureSize);
CoordRect intersection = CoordRect.Intersect(textureRect, rect);
//checking ref color array
if (colors == null || colors.Length != intersection.size.x*intersection.size.z) colors = new Color[intersection.size.x*intersection.size.z];
//filling texture
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
float val = this[x,z];
//adjusting value to range
val -= rangeMin;
val /= rangeMax-rangeMin;
//making color gradient
float byteVal = val * 256;
int flooredByteVal = (int)byteVal;
float remainder = byteVal - flooredByteVal;
float flooredVal = flooredByteVal/256f;
float ceiledVal = (flooredByteVal+1)/256f;
//saving to colors
int tx = x-min.x; int tz = z-min.z;
colors[tz*(max.x-min.x) + tx] = new Color(flooredVal, remainder>0.333f ? ceiledVal : flooredVal, remainder>0.666f ? ceiledVal : flooredVal);
}
texture.SetPixels(intersection.offset.x, intersection.offset.z, intersection.size.x, intersection.size.z, colors);
texture.Apply();
}
public void GetHeight(Matrix matrix, Terrain terrain)
{
CoordRect terrainRect = terrain.GetHeightRect();
CoordRect intersection = CoordRect.Intersect(terrainRect, matrix.rect);
if (intersection.size.x <= 0 || intersection.size.z <= 0)
{
return;
}
float[,] heights = terrain.terrainData.GetHeights(intersection.offset.x - terrainRect.offset.x, intersection.offset.z - terrainRect.offset.z, intersection.size.x, intersection.size.z);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x = min.x; x < max.x; x++)
{
for (int z = min.z; z < max.z; z++)
{
matrix[x, z] = heights[z - min.z, x - min.x]; //x and z switched
}
}
}
public void AddSplat(Matrix matrix, Terrain terrain, int channel)
{
CoordRect terrainRect = terrain.GetSplatRect();
CoordRect intersection = CoordRect.Intersect(terrainRect, matrix.rect);
if (intersection.size.x <= 0 || intersection.size.z <= 0)
{
return;
}
float[,,] splats = terrain.terrainData.GetAlphamaps(intersection.offset.x - terrainRect.offset.x, intersection.offset.z - terrainRect.offset.z, intersection.size.x, intersection.size.z);
int numSplats = splats.GetLength(2);
Coord min = intersection.Min; Coord max = intersection.Max;
for (int x = min.x; x < max.x; x++)
{
for (int z = min.z; z < max.z; z++)
{
int sx = z - min.z; int sz = x - min.x; //x and z switched
float val = matrix[x, z];
float invVal = 1 - matrix[x, z];
//multiplying all splats on inverse value
for (int s = 0; s < numSplats; s++)
{
splats[sx, sz, s] *= invVal;
}
//adding val
splats[sx, sz, channel] += val;
}
}
terrain.terrainData.SetAlphamaps(intersection.offset.x - terrainRect.offset.x, intersection.offset.z - terrainRect.offset.z, splats);
}
