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
}