public override bool applyToDstImg(BTerrainQuadNode node, int x, int z, bool selectionMode, bool alternate)
{
BTerrainLayerContainer layers = node.mLayerContainer;
BTerrainActiveDecalContainer decal = TerrainGlobals.getTexturing().getActiveDecal(TerrainGlobals.getTerrainFrontEnd().SelectedDecalIndex);
bool changed = false;
return(changed);
}
public bool init(int decalIndex)
{
mDecalArrayIndex = decalIndex;
BTerrainActiveDecalContainer decal = TerrainGlobals.getTexturing().getActiveDecal(TerrainGlobals.getTerrainFrontEnd().SelectedDecalIndex);
SurfaceDescription sd = decal.mTexChannels[0].mTexture.GetLevelDescription(0);
mDecalRadius = sd.Width / 2;
mDecalWidth = sd.Width;
mDecalHeight = sd.Height;
return(true);
}
public void computeDecalLayerAlphaContrib(int layerIndex, int minXVertex, int minZVertex)
{
if (layerIndex < 0 || layerIndex >= mLayers.Count)
{
return;
}
//grab our decal instance
if (mLayers[layerIndex].mLayerType != BTerrainTexturingLayer.eLayerType.cLayer_Decal)
{
return;
}
float vertsToHighResPixelSpaceRatio = BTerrainTexturing.getTextureWidth() / BTerrainQuadNode.cMaxWidth;
BTerrainDecalInstance dcli = TerrainGlobals.getTexturing().getActiveDecalInstance(mLayers[layerIndex].mActiveTextureIndex);
BTerrainActiveDecalContainer dcl = TerrainGlobals.getTexturing().getActiveDecal(dcli.mActiveDecalIndex);
//scale, rotate, translate us
int h = dcl.mHeight;
int w = dcl.mWidth;
int nW = (int)(w * ((1.0f / dcli.mUScale) / vertsToHighResPixelSpaceRatio));
int nH = (int)(h * ((1.0f / dcli.mVScale) / vertsToHighResPixelSpaceRatio));
int tW = 0;
int tH = 0;
byte[] tImgResized = null;
byte[] tImgRotated = null;
byte[] imgDat = new byte[h * w];
imgDat = ImageManipulation.valueGreyScaleImg(imgDat, w, h, ImageManipulation.eValueOperation.cValue_Set, 255);
tImgResized = ImageManipulation.resizeGreyScaleImg(imgDat, w, h, nW, nH, ImageManipulation.eFilterType.cFilter_Linear);
tImgRotated = ImageManipulation.rotateGreyScaleImg(tImgResized, nW, nH, (float)(-dcli.mRotation * (180.0f / Math.PI)), false, out nW, out nH, ImageManipulation.eFilterType.cFilter_Nearest);
byte[] tImg = tImgRotated;
int startX = (int)((dcli.mTileCenter.X / vertsToHighResPixelSpaceRatio) - (nW >> 1) - minXVertex);
int startY = (int)((dcli.mTileCenter.Y / vertsToHighResPixelSpaceRatio) - (nH >> 1) - minZVertex);
clearLayerAlpha(layerIndex);
//copy back to masking
for (int i = 0; i < nW; i++)
{
for (int j = 0; j < nH; j++)
{
int iS = startX + i;
if (iS < 0 || iS >= BTerrainTexturing.getAlphaTextureWidth())
{
continue;
}
int jS = startY + j;
if (jS < 0 || jS >= BTerrainTexturing.getAlphaTextureHeight())
{
continue;
}
int srcIndex = j + i * nW;
int dstIndex = (int)(iS + BTerrainTexturing.getAlphaTextureHeight() * jS);
byte val = tImg[srcIndex];
mLayers[layerIndex].mAlphaLayer[dstIndex] = val;
}
}
//also, walk any layers that exist above us, and subtract out their values as well
for (int k = layerIndex + 1; k < mLayers.Count; k++)
{
if (mLayers[k].mLayerType == BTerrainTexturingLayer.eLayerType.cLayer_Splat)
{
for (int i = 0; i < BTerrainTexturing.getAlphaTextureWidth() * BTerrainTexturing.getAlphaTextureHeight(); i++)
{
mLayers[layerIndex].mAlphaLayer[i] = (byte)BMathLib.Clamp(mLayers[layerIndex].mAlphaLayer[i] - mLayers[k].mAlphaLayer[i], 0, 255);
}
}
}
imgDat = null;
tImgResized = null;
tImgRotated = null;
tImg = null;
}
