public static PaintContext BeginPaintTexture(Terrain terrain, Rect boundsInTerrainSpace, TerrainLayer inputLayer, int extraBorderPixels = 0)
{
if (inputLayer == null)
{
return(null);
}
int resolution = terrain.terrainData.alphamapResolution;
PaintContext ctx = InitializePaintContext(terrain, resolution, resolution, RenderTextureFormat.R8, boundsInTerrainSpace, extraBorderPixels);
ctx.GatherAlphamap(inputLayer, true);
return(ctx);
}
public static PaintContext BeginPaintTexture(Terrain terrain, Rect boundsInTerrainSpace, TerrainLayer inputLayer, int extraBorderPixels = 0)
{
bool flag = inputLayer == null;
PaintContext result;
if (flag)
{
result = null;
}
else
{
int alphamapResolution = terrain.terrainData.alphamapResolution;
PaintContext paintContext = TerrainPaintUtility.InitializePaintContext(terrain, alphamapResolution, alphamapResolution, RenderTextureFormat.R8, boundsInTerrainSpace, extraBorderPixels, true);
paintContext.GatherAlphamap(inputLayer, true);
result = paintContext;
}
return(result);
}
public static PaintContext BeginPaintTexture(Terrain terrain, Rect boundsInTerrainSpace, TerrainLayer inputLayer, int extraBorderPixels = 0)
{
if (inputLayer == null)
{
return(null);
}
int terrainLayerIndex = FindTerrainLayerIndex(terrain, inputLayer);
if (terrainLayerIndex == -1)
{
terrainLayerIndex = AddTerrainLayer(terrain, inputLayer);
}
Texture2D inputTexture = GetTerrainAlphaMapChecked(terrain, terrainLayerIndex >> 2);
PaintContext ctx = InitializePaintContext(terrain, inputTexture, RenderTextureFormat.R8, boundsInTerrainSpace, extraBorderPixels);
ctx.GatherAlphamap(inputLayer);
return(ctx);
}
public static PaintContext BeginPaintTexture(Terrain terrain, Rect bounds, TerrainLayer inputLayer)
{
if (inputLayer == null)
{
return(null);
}
int terrainLayerIndex = FindTerrainLayerIndex(terrain, inputLayer);
if (terrainLayerIndex == -1)
{
terrainLayerIndex = AddTerrainLayer(terrain, inputLayer);
}
Texture2D inputTexture = GetTerrainAlphaMapChecked(terrain, terrainLayerIndex >> 2);
PaintContext ctx = InitializePaintContext(terrain, bounds, inputTexture.width, inputTexture.height, RenderTextureFormat.R8);
ctx.GatherAlphamap(terrain, inputLayer);
return(ctx);
}
public static void BuildTransformPaintContextUVToPaintContextUV(PaintContext src, PaintContext dst, out Vector4 scaleOffset)
{
// for example:
// src = alphaUV
// dst = normalUV
// dst.uv = src.u * scales.xy + src.v * scales.zw + offset
// terrainspace.xz = srcOrigin + src.uv * srcSize
// terrainspace.xz = dstOrigin + dst.uv * dstSize
// dstOrigin + dst.uv * dstSize = srcOrigin + src.uv * srcSize
// dst.uv * dstSize = src.uv * srcSize + srcOrigin - dstOrigin
// dst.uv = (src.uv * srcSize + srcOrigin - dstOrigin) / dstSize
// dst.uv = (src.uv * srcSize) / dstSize + (srcOrigin - dstOrigin) / dstSize
// scales.x = srcSize.x / dstSize.x
// scales.yz = 0.0f;
// scales.w = srcSize.y / dstSize.y
// offset.xy = (srcOrigin.xy - dstOrigin.xy) / dstSize.xy
// paint context origin in terrain space
// (note this is the UV space origin and size, not the mesh origin & size)
float srcOriginX = (src.pixelRect.xMin - 0.5f) * src.pixelSize.x;
float srcOriginZ = (src.pixelRect.yMin - 0.5f) * src.pixelSize.y;
float srcSizeX = (src.pixelRect.width) * src.pixelSize.x;
float srcSizeZ = (src.pixelRect.height) * src.pixelSize.y;
// paint context origin in terrain space
// (note this is the UV space origin and size, not the mesh origin & size)
float dstOriginX = (dst.pixelRect.xMin - 0.5f) * dst.pixelSize.x;
float dstOriginZ = (dst.pixelRect.yMin - 0.5f) * dst.pixelSize.y;
float dstSizeX = (dst.pixelRect.width) * dst.pixelSize.x;
float dstSizeZ = (dst.pixelRect.height) * dst.pixelSize.y;
scaleOffset = new Vector4(
srcSizeX / dstSizeX,
srcSizeZ / dstSizeZ,
(srcOriginX - dstOriginX) / dstSizeX,
(srcOriginZ - dstOriginZ) / dstSizeZ
);
}
public static void EndPaintTexture(PaintContext ctx, string editorUndoName)
{
ctx.ScatterAlphamap(editorUndoName);
ctx.Cleanup();
}
public static void EndPaintHeightmap(PaintContext ctx, string editorUndoName)
{
ctx.ScatterHeightmap(editorUndoName);
ctx.Cleanup();
}
public static void ReleaseContextResources(PaintContext ctx)
{
ctx.Cleanup();
}
public static void EndPaintSurfaceMask(PaintContext ctx, string editorUndoName)
{
ctx.ScatterSurfaceMask(editorUndoName);
ctx.Cleanup();
}
public static void BuildTransformPaintContextUVToPaintContextUV(PaintContext src, PaintContext dst, out Vector4 scaleOffset)
{
float num = ((float)src.pixelRect.xMin - 0.5f) * src.pixelSize.x;
float num2 = ((float)src.pixelRect.yMin - 0.5f) * src.pixelSize.y;
float num3 = (float)src.pixelRect.width * src.pixelSize.x;
float num4 = (float)src.pixelRect.height * src.pixelSize.y;
float num5 = ((float)dst.pixelRect.xMin - 0.5f) * dst.pixelSize.x;
float num6 = ((float)dst.pixelRect.yMin - 0.5f) * dst.pixelSize.y;
float num7 = (float)dst.pixelRect.width * dst.pixelSize.x;
float num8 = (float)dst.pixelRect.height * dst.pixelSize.y;
scaleOffset = new Vector4(num3 / num7, num4 / num8, (num - num5) / num7, (num2 - num6) / num8);
}
public static void EndPaintHoles(PaintContext ctx, string editorUndoName)
{
ctx.ScatterHoles(editorUndoName);
ctx.Cleanup(true);
}
