void IManipulator.Render(ViewControl vc)
{
TerrainGob terrain = m_terrainEditor.TerrainEditorControl.SelectedTerrain;
TerrainBrush brush = m_terrainEditor.TerrainEditorControl.SelectedBrush;
TerrainMap terrainMap = m_terrainEditor.TerrainEditorControl.SelectedTerrainMap;
if (brush == null || (!brush.CanApplyTo(terrain) && !brush.CanApplyTo(terrainMap)))
{
return;
}
Vec2F drawscale = new Vec2F(1.0f, 1.0f);
if (brush.CanApplyTo(terrainMap))
{
ImageData mapImg = terrainMap.GetSurface();
ImageData hmImg = terrain.GetSurface();
drawscale.X = (float)hmImg.Width / (float)mapImg.Width;
drawscale.Y = (float)hmImg.Height / (float)mapImg.Height;
}
Point scrPt = vc.PointToClient(Control.MousePosition);
if (!vc.ClientRectangle.Contains(scrPt))
{
return;
}
Ray3F rayw = vc.GetWorldRay(scrPt);
TerrainGob.RayPickRetVal retval;
if (terrain.RayPick(rayw, out retval))
{
terrain.DrawBrush(brush, drawscale, retval.hitpos);
}
}
public override void Apply(ITerrainSurface target, int x, int y, out TerrainOp op)
{
op = null;
if (!CanApplyTo(target))
{
return;
}
Bound2di outRect;
TerrainMap tmap = target.As <TerrainMap>();
ImageData mask = tmap.GetSurface();
ComputeBound(mask, x, y, out outRect);
bool validArgs = outRect.isValid && mask.Format == ImageDataFORMAT.R8_UNORM;
System.Diagnostics.Debug.Assert(validArgs);
if (validArgs == false)
{
return;
}
op = new TerrainOp(target, outRect);
var brushOp = GetBrushOp();
float minheight = tmap.MinHeight;
float maxheight = tmap.MaxHeight;
float minslope = tmap.MinSlope;
float maxslope = tmap.MaxSlope;
ImageData hmImg = tmap.Parent.GetSurface();
float dx = (float)hmImg.Width / (float)mask.Width;
float dy = (float)hmImg.Height / (float)mask.Height;
int pixelstrength = (int)Math.Round(255.0f * Strength);
Func <int, int, byte> ops = null;
if (brushOp == BrushOps.Paint)
{
ops = (px, py) =>
{
if (px >= pixelstrength)
{
return((byte)px);
}
else
{
return((byte)Math.Min(pixelstrength, px + py));
}
};
}
else
{
ops = (px, py) => (byte)MathUtil.Clamp <int>(px - py, 0, 255);
}
// start point in kernel space.
int bx0 = x - Radius;
int by0 = y - Radius;
float run = 2.0f * tmap.Parent.CellSize;
int size = 2 * Radius + 1;
for (int cy = outRect.y1; cy < outRect.y2; cy++)
{
int by = cy - by0;
for (int cx = outRect.x1; cx < outRect.x2; cx++)
{
int bx = cx - bx0;
// test for height and slope.
// xform px and py to heightmap space hx, hy.
if (brushOp == BrushOps.Paint)
{
int hx = (int)Math.Round(cx * dx);
int hy = (int)Math.Round(cy * dy);
float height = hmImg.GetPixelFloat(hx, hy);
if (height < minheight || height > maxheight)
{
continue;
}
// check slope
float slopex = hmImg.GetPixelFloat(hx + 1, hy) - hmImg.GetPixelFloat(hx - 1, hy);
float slopeY = hmImg.GetPixelFloat(hx, hy + 1) - hmImg.GetPixelFloat(hx, hy - 1);
float slope = Math.Max(Math.Abs(slopex), Math.Abs(slopeY)) / run;
float deg = MathHelper.ToDegree((float)Math.Atan(slope));
if (deg < minslope || deg > maxslope)
{
continue;
}
}
float scrPixel = Kernel[size * by + bx];
byte *destPixel = mask.GetPixel(cx, cy);
* destPixel = ops(*destPixel, (int)Math.Round(scrPixel * 255.0f));
}
}
tmap.ApplyDirtyRegion(outRect);
}