private void _initBlendMaps(Axiom.Components.Terrain.Terrain terrain)
{
var blendMap0 = terrain.GetLayerBlendMap(1);
var blendMap1 = terrain.GetLayerBlendMap(2);
Real minHeight0 = 70;
Real fadeDist0 = 40;
Real minHeight1 = 70;
Real fadeDist1 = 15;
var pBlend1 = blendMap1.BlendPointer;
var blendIdx = 0;
for (var y = 0; y < terrain.LayerBlendMapSize; y++)
{
for (var x = 0; x < terrain.LayerBlendMapSize; x++)
{
Real tx = 0;
Real ty = 0;
blendMap0.ConvertImageToTerrainSpace(x, y, ref tx, ref ty);
Real height = terrain.GetHeightAtTerrainPosition(tx, ty);
Real val = (height - minHeight0) / fadeDist0;
val = Utility.Clamp(val, 0, 1);
val = (height - minHeight1) / fadeDist1;
val = Utility.Clamp(val, 0, 1);
pBlend1[blendIdx++] = val;
}
}
blendMap0.Dirty();
blendMap1.Dirty();
blendMap0.Update();
blendMap1.Update();
}
public void DoTerrainModify(Axiom.Components.Terrain.Terrain terrain, Vector3 centrepos, Real timeElapsed)
{
var tsPos = Vector3.Zero;
terrain.GetTerrainPosition(centrepos, ref tsPos);
#if !(WINDOWS_PHONE || XBOX || XBOX360 || ANDROID || IOS)
if (Keyboard.IsKeyDown(SIS.KeyCode.Key_EQUALS) || Keyboard.IsKeyDown(SIS.KeyCode.Key_ADD) ||
Keyboard.IsKeyDown(SIS.KeyCode.Key_MINUS) || Keyboard.IsKeyDown(SIS.KeyCode.Key_SUBTRACT))
{
switch (this.mode)
{
case Mode.EditHeight:
{
// we need point coords
Real terrainSize = (terrain.Size - 1);
var startx = (long)((tsPos.x - this.brushSizeTerrainSpace) * terrainSize);
var starty = (long)((tsPos.y - this.brushSizeTerrainSpace) * terrainSize);
var endx = (long)((tsPos.x + this.brushSizeTerrainSpace) * terrainSize);
var endy = (long)((tsPos.y + this.brushSizeTerrainSpace) * terrainSize);
startx = Utility.Max(startx, 0L);
starty = Utility.Max(starty, 0L);
endx = Utility.Min(endx, (long)terrainSize);
endy = Utility.Min(endy, (long)terrainSize);
for (long y = starty; y <= endy; ++y)
{
for (long x = startx; x <= endx; ++x)
{
Real tsXdist = (x / terrainSize) - tsPos.x;
Real tsYdist = (y / terrainSize) - tsPos.y;
Real weight = Utility.Min((Real)1.0,
Utility.Sqrt(tsYdist * tsYdist + tsXdist * tsXdist) /
(Real)(0.5 * this.brushSizeTerrainSpace));
weight = 1.0 - (weight * weight);
var addedHeight = weight * 250.0 * timeElapsed;
float newheight;
if (Keyboard.IsKeyDown(SIS.KeyCode.Key_EQUALS) || Keyboard.IsKeyDown(SIS.KeyCode.Key_ADD))
{
newheight = terrain.GetHeightAtPoint(x, y) + addedHeight;
}
else
{
newheight = terrain.GetHeightAtPoint(x, y) - addedHeight;
}
terrain.SetHeightAtPoint(x, y, newheight);
}
}
if (this.heightUpdateCountDown == 0)
{
this.heightUpdateCountDown = this.heightUpdateRate;
}
}
break;
case Mode.EditBlend:
{
var layer = terrain.GetLayerBlendMap(this.layerEdit);
// we need image coords
Real imgSize = terrain.LayerBlendMapSize;
var startx = (long)((tsPos.x - this.brushSizeTerrainSpace) * imgSize);
var starty = (long)((tsPos.y - this.brushSizeTerrainSpace) * imgSize);
var endx = (long)((tsPos.x + this.brushSizeTerrainSpace) * imgSize);
var endy = (long)((tsPos.y + this.brushSizeTerrainSpace) * imgSize);
startx = Utility.Max(startx, 0L);
starty = Utility.Max(starty, 0L);
endx = Utility.Min(endx, (long)imgSize);
endy = Utility.Min(endy, (long)imgSize);
for (var y = (int)starty; y <= endy; ++y)
{
for (var x = (int)startx; x <= endx; ++x)
{
Real tsXdist = (x / imgSize) - tsPos.x;
Real tsYdist = (y / imgSize) - tsPos.y;
Real weight = Utility.Min((Real)1.0,
Utility.Sqrt(tsYdist * tsYdist + tsXdist * tsXdist) /
(Real)(0.5 * this.brushSizeTerrainSpace));
weight = 1.0 - (weight * weight);
float paint = weight * timeElapsed;
var imgY = (int)(imgSize - y);
float val;
if (Keyboard.IsKeyDown(SIS.KeyCode.Key_EQUALS) || Keyboard.IsKeyDown(SIS.KeyCode.Key_ADD))
{
val = layer.GetBlendValue(x, imgY) + paint;
}
else
{
val = layer.GetBlendValue(x, imgY) - paint;
}
val = Utility.Clamp(val, 1.0f, 0.0f);
layer.SetBlendValue(x, imgY, val);
}
}
layer.Update();
}
break;
case Mode.Normal:
case Mode.Count:
default:
break;
}
;
}
#endif
}