/// <summary>
/// Redraw the specified region.
/// Should be used only from the draw() method.
/// </summary>
/// <param name="rectAB">Rectangle in the (A,B) coordinates.</param>
/// <param name="overlay"></param>
public void Draw(Rectangle rectAB, IMapOverlay overlay)
{
// the same rectangle in the client coordinates
Rectangle rectClient = fromABToClient(rectAB);
int waterLevel = world.WaterLevel;
bool noHeightCut = (HeightCutHeight == world.Size.z - 1);
Color waterSurfaceColor = waterSurfaceDayColor;
if (world.ViewOptions.UseNightView)
{
waterSurfaceColor = ColorMap.getNightColor(waterSurfaceColor);
}
rectAB.Inflate(20, 20);
if (rectAB.X < 0)
{
rectAB.X = 0;
}
if (rectAB.Y < 0)
{
rectAB.Y = 0;
}
if ((rectAB.Width + rectAB.X) > offscreenBuffer.Size.Width)
{
rectAB.Width = (rectAB.Width - rectAB.X);
}
if ((rectAB.Height + rectAB.Y) > offscreenBuffer.Size.Height)
{
rectAB.Height = (rectAB.Height - rectAB.Y);
}
//if (rectClient. > offscreenBuffer.clipRect)
//dirtyRect.add(rectClient);
offscreenBuffer.ClipRect = rectAB; // set clipping
Rectangle rectHV = fromABToHV(rectAB); // determine the region to draw
int Hmax = Math.Min(rectHV.Right, world.Size.x - 1);
int Zinit = noHeightCut ? (int)waterLevel : 0; // no need to draw underwater unless in the height cut mode
int Z = HeightCutHeight;
int Vmax = Math.Min(rectHV.Bottom + Z * 2, world.Size.y - 1);
emptyChip = ResourceUtil.GetGroundChip(world);
waterChip = ResourceUtil.UnderWaterChip;
for (int v = Math.Max(0, rectHV.Top); v <= Vmax; v++)
{
for (int h = rectHV.Left; h <= Hmax; h++)
{
int groundLevel = world.getGroundLevelFromHV(h, v);
int zi = Zinit;
if (Zinit <= groundLevel && !shouldDrawGround(h, v, Zinit))
{
zi = Math.Max(zi - 1, 0); // if the surface is being cut, start from one smaller
}
for (int z = zi; z <= Z; z++)
{
Voxel voxel = world.voxelHVD(h, v, z);
// if(voxel!=null)
// Debug.Assert( voxel.location==world.toXYZ(h,v,z) );
// point in the client coordinate to draw
Point pt = fromHVZToClient(h, v, z);
// draw the surface anyway.
if (voxel == null || voxel.Transparent)
{
if (z == groundLevel)
{
if (shouldDrawGround(h, v, z))
{
if (waterLevel <= z)
{
//DateTime start = DateTime.Now;
emptyChip.Draw(drawContext.Surface, pt);
//Debug.WriteLine(z + "[3]: " + (DateTime.Now - start).TotalMilliseconds + "ms, ");
}
else
{
waterChip.Draw(drawContext.Surface, pt);
}
}
}
else
if (z == waterLevel && noHeightCut)
{
emptyChip.DrawShape(drawContext.Surface, pt, waterSurfaceColor);
}
else
if (z == Z && Z < groundLevel)
{
// if the surface voxel is not drawn, draw the "under group" chip
if (shouldDrawGround(h, v, z))
{
ResourceUtil.UnderGroundChip.Draw(drawContext.Surface, pt);
}
}
}
// }
// }
// }
//
// for( int v=Math.Max(0,rectHV.Top); v<=Vmax; v++ )
// {
// for( int h=rectHV.Left; h<=Hmax; h++ )
// {
// int groundLevel = world.getGroundLevelFromHV(h,v);
//
// int zi = Zinit;
// if( Zinit<=groundLevel && !shouldDrawGround(h,v,Zinit) )
// zi = Math.Max(zi-1,0); // if the surface is being cut, start from one smaller
// for( int z=zi; z<=Z; z++ )
// {
// Voxel voxel = world.voxelHVD(h,v,z);
// // if(voxel!=null) Debug.Assert( voxel.location==world.toXYZ(h,v,z) );
//
// if( z<groundLevel && z<heightCutHeight ) continue;
// Point pt = fromHVZToClient(h,v,z);
if (voxel != null)
{
//DateTime start = DateTime.Now;
voxel.DrawVoxel(drawContext, pt, noHeightCut ? -1 : (Z - z + 1));
//Debug.WriteLine("voxel took: " + (DateTime.Now - start).TotalMilliseconds + "ms");
}
if (overlay != null)
{
overlay.DrawVoxel(this, drawContext, world.toXYZ(h, v, z), pt);
}
}
// Debug.WriteLine("outer loop took: " + (DateTime.Now - start).TotalMilliseconds + "ms");
}
}
if (Core.Options.drawBoundingBox)
{
rectAB.Inflate(-1, -1);
offscreenBuffer.DrawBox(rectAB);
}
}