public void ApplyBrush(Rect worldRect, bool useFallof = true, bool newUndo = false)
{
TerrainData data = terrain.terrainData;
//preparing useful values
bool paintSplat = preset.paintSplat;
if (data.alphamapLayers == 0)
{
paintSplat = false;
}
//finding minimum resolution
int smallerRes = Mathf.Min(data.heightmapResolution - 1, data.alphamapResolution);
int largerRes = Mathf.Max(data.heightmapResolution - 1, data.alphamapResolution);
int downscaledRes = largerRes / preset.downscale;
int minRes = Mathf.Min(smallerRes, downscaledRes);
//scale factors (relative to min res)
int heightFactor = (data.heightmapResolution - 1) / minRes;
int splatFactor = data.alphamapResolution / minRes;
int downscaledFactor = downscaledRes / minRes;
//creating rects
CoordRect minRect = new CoordRect(worldRect.x * minRes, worldRect.y * minRes, worldRect.width * minRes, worldRect.height * minRes);
CoordRect heightsRect = minRect * heightFactor;
CoordRect splatsRect = minRect * splatFactor;
CoordRect downscaledRect = minRect * downscaledFactor;
//checking stackers
if (heights == null || heights.smallRect != downscaledRect || heights.bigRect != heightsRect)
{
heights = new Matrix.Stacker(downscaledRect, heightsRect);
}
if (splats == null || splats.smallRect != downscaledRect || splats.bigRect != splatsRect)
{
splats = new Matrix.Stacker(downscaledRect, splatsRect);
}
if (sediments == null || sediments.smallRect != downscaledRect || sediments.bigRect != splatsRect)
{
sediments = new Matrix.Stacker(downscaledRect, splatsRect);
}
heights.preserveDetail = preserveDetail; splats.preserveDetail = preserveDetail; sediments.preserveDetail = preserveDetail;
//creating original arrays
heights.matrix.ChangeRect(heightsRect);
float[,] heights2d = heights.matrix.ReadHeighmap(data);
splats.matrix.ChangeRect(splatsRect); sediments.matrix.ChangeRect(splatsRect);
float[,,] splats3d = null;
if (paintSplat)
{
splats3d = splats.matrix.ReadSplatmap(data, preset.foreground.num);
sediments.matrix.ReadSplatmap(data, preset.background.num, splats3d);
}
//downscaling arrays
heights.ToSmall();
if (paintSplat)
{
splats.ToSmall(); sediments.ToSmall();
}
//generating
if (!preset.isErosion)
{
Matrix heightsMatrix = heights.matrix; Matrix splatsMatrix = splats.matrix; Matrix sedimentsMatrix = sediments.matrix;
Coord min = heightsMatrix.rect.Min; Coord max = heightsMatrix.rect.Max;
for (int x = min.x; x < max.x; x++)
{
for (int z = min.z; z < max.z; z++)
{
float noise = Noise.Fractal(x, z, preset.noise_size);
//noise = 1f*(x-min.x)/(max.x-min.x);
noise = (noise - (1 - preset.noise_uplift)) * preset.noise_amount;
heightsMatrix[x, z] += noise / data.size.y;
if (paintSplat)
{
float splatNoise = Mathf.Max(0, noise);
splatsMatrix[x, z] = Mathf.Sqrt(splatNoise) * 0.3f;
float sedimentNoise = Mathf.Max(0, -noise);
sedimentsMatrix[x, z] = Mathf.Sqrt(sedimentNoise) * 0.3f;
}
//test
//splatsMatrix[x,z] += 0.5f; //1f * (x-min.x) / (max.x-min.x);
//sediments.matrix[x,z] += 0.5f;// 1f * (z-min.z) / (max.z-min.z);
}
}
}
else
{
//ErosionBrushPlugin.Erosion.ErosionIteration (heights.matrix.array, paintSplat? splats.matrix.array:null, paintSplat? sediments.matrix.array:null,
// heights.matrix.rect.size.x, heights.matrix.rect.size.z,
// erosionDurability:preset.erosion_durability, erosionAmount:preset.erosion_amount, sedimentAmount:preset.sediment_amount, erosionFluidityIterations:preset.erosion_fluidityIterations);
//blurring heights
//heights.matrix.Blur(intensity:preset.erosion_smooth);
//increasing splat
//splats.matrix.Multiply(1.3f);
//sediments.matrix.Multiply(1.3f);
}
//upscaling arrays (+blur)
heights.ToBig(); splats.ToBig(); sediments.ToBig();
//record undo. Undo.RecordObject and SetDirty are done in editor
if (recordUndo)
{
if (newUndo)
{
if (undoList.Count > 10)
{
undoList.RemoveAt(0);
}
undoList.Add(new List <UndoStep>());
}
if (undoList.Count == 0)
{
undoList.Add(new List <UndoStep>());
}
undoList[undoList.Count - 1].Add(new UndoStep(heights2d, splats3d, heightsRect.offset.x, heightsRect.offset.z, splatsRect.offset.x, splatsRect.offset.z));
}
//apply
heights.matrix.WriteHeightmap(data, heights2d, (useFallof ? preset.brushFallof : -1));
if (paintSplat)
{
Matrix.AddSplatmaps(data,
new Matrix[] { splats.matrix, sediments.matrix },
new int[] { preset.foreground.num, preset.background.num },
new float[] { preset.foreground.apply?preset.foreground.opacity: 0, preset.background.apply? preset.background.opacity:0 },
brushFallof: (useFallof ? preset.brushFallof : -1),
array: splats3d); //note that splat and sediments are additive
}
}
public void ApplyBrush(Rect worldRect, bool useFallof=true, bool newUndo=false)
{
TerrainData data = terrain.terrainData;
//preparing useful values
bool paintSplat = preset.paintSplat;
if (data.alphamapLayers==0) paintSplat = false;
//finding minimum resolution
int smallerRes = Mathf.Min(data.heightmapResolution-1, data.alphamapResolution);
int largerRes = Mathf.Max(data.heightmapResolution-1, data.alphamapResolution);
int downscaledRes = largerRes / preset.downscale;
int minRes = Mathf.Min(smallerRes, downscaledRes);
//scale factors (relative to min res)
int heightFactor = (data.heightmapResolution-1) / minRes;
int splatFactor = data.alphamapResolution / minRes;
int downscaledFactor = downscaledRes / minRes;
//creating rects
CoordRect minRect = new CoordRect(worldRect.x*minRes, worldRect.y*minRes, worldRect.width*minRes, worldRect.height*minRes);
CoordRect heightsRect = minRect * heightFactor;
CoordRect splatsRect = minRect * splatFactor;
CoordRect downscaledRect = minRect * downscaledFactor;
//checking stackers
if (heights==null || heights.smallRect!=downscaledRect || heights.bigRect!=heightsRect)
heights = new Matrix.Stacker(downscaledRect, heightsRect);
if (splats==null || splats.smallRect!=downscaledRect || splats.bigRect != splatsRect)
splats = new Matrix.Stacker(downscaledRect, splatsRect);
if (sediments==null || sediments.smallRect != downscaledRect || sediments.bigRect != splatsRect)
sediments = new Matrix.Stacker(downscaledRect, splatsRect);
heights.preserveDetail=preserveDetail; splats.preserveDetail=preserveDetail; sediments.preserveDetail = preserveDetail;
//creating original arrays
heights.matrix.ChangeRect(heightsRect);
float[,] heights2d = heights.matrix.ReadHeighmap(data);
splats.matrix.ChangeRect(splatsRect); sediments.matrix.ChangeRect(splatsRect);
float[,,] splats3d = null;
if (paintSplat)
{
splats3d = splats.matrix.ReadSplatmap(data, preset.foreground.num);
sediments.matrix.ReadSplatmap(data, preset.background.num, splats3d);
}
//downscaling arrays
heights.ToSmall();
if (paintSplat) { splats.ToSmall(); sediments.ToSmall(); }
//generating
if (!preset.isErosion)
{
Matrix heightsMatrix = heights.matrix; Matrix splatsMatrix = splats.matrix; Matrix sedimentsMatrix = sediments.matrix;
Coord min = heightsMatrix.rect.Min; Coord max = heightsMatrix.rect.Max;
for (int x=min.x; x<max.x; x++)
for (int z=min.z; z<max.z; z++)
{
float noise = Noise.Fractal(x, z, preset.noise_size);
//noise = 1f*(x-min.x)/(max.x-min.x);
noise = (noise-(1-preset.noise_uplift)) * preset.noise_amount;
heightsMatrix[x,z] += noise / data.size.y;
if (paintSplat)
{
float splatNoise = Mathf.Max(0,noise);
splatsMatrix[x,z] = Mathf.Sqrt(splatNoise)*0.3f;
float sedimentNoise = Mathf.Max(0,-noise);
sedimentsMatrix[x,z] = Mathf.Sqrt(sedimentNoise)*0.3f;
}
//test
//splatsMatrix[x,z] += 0.5f; //1f * (x-min.x) / (max.x-min.x);
//sediments.matrix[x,z] += 0.5f;// 1f * (z-min.z) / (max.z-min.z);
}
}
else
{
//ErosionBrushPlugin.Erosion.ErosionIteration (heights.matrix.array, paintSplat? splats.matrix.array:null, paintSplat? sediments.matrix.array:null,
// heights.matrix.rect.size.x, heights.matrix.rect.size.z,
// erosionDurability:preset.erosion_durability, erosionAmount:preset.erosion_amount, sedimentAmount:preset.sediment_amount, erosionFluidityIterations:preset.erosion_fluidityIterations);
//blurring heights
//heights.matrix.Blur(intensity:preset.erosion_smooth);
//increasing splat
//splats.matrix.Multiply(1.3f);
//sediments.matrix.Multiply(1.3f);
}
//upscaling arrays (+blur)
heights.ToBig(); splats.ToBig(); sediments.ToBig();
//record undo. Undo.RecordObject and SetDirty are done in editor
if (recordUndo)
{
if (newUndo)
{
if (undoList.Count > 10) undoList.RemoveAt(0);
undoList.Add(new List<UndoStep>());
}
if (undoList.Count == 0) undoList.Add(new List<UndoStep>());
undoList[undoList.Count-1].Add( new UndoStep(heights2d, splats3d, heightsRect.offset.x, heightsRect.offset.z, splatsRect.offset.x, splatsRect.offset.z) );
}
//apply
heights.matrix.WriteHeightmap(data, heights2d, (useFallof ? preset.brushFallof : -1));
if (paintSplat) Matrix.AddSplatmaps(data,
new Matrix[] {splats.matrix, sediments.matrix},
new int[] {preset.foreground.num, preset.background.num},
new float[] {preset.foreground.apply? preset.foreground.opacity:0, preset.background.apply? preset.background.opacity:0},
brushFallof:(useFallof ? preset.brushFallof : -1),
array:splats3d); //note that splat and sediments are additive
}