public void Draw(LogicState state, DrawingWindowState drawingWindowState)
{
_stopwatch.Restart();
using (Bitmap.GetBitmapContext())
{
Bitmap.Clear();
var renderer = new MapRenderer(16, 16);
renderer.Render(state.Map, Bitmap, ImageProvider, drawingWindowState);
}
var elapsed = _stopwatch.ElapsedMilliseconds;
if (elapsed > 150)
{
Logger.Write($"Drawing takes {elapsed}ms! Consider disabling it!");
}
}
public void Render <TNode>(IMap2D <TNode> map, WriteableBitmap target, ImageProvider <TNode> imageProvider, DrawingWindowState drawingWindowState)
{
if (drawingWindowState.Z >= 1200 - _minZoom * 1200.0)
{
drawingWindowState.Z = (int)(1200 - _minZoom * 1200.0);
}
if (drawingWindowState.Z < 0)
{
drawingWindowState.Z = 0;
}
var scale = (1200 - drawingWindowState.Z) / 1200.0;
var xOffset = drawingWindowState.X / (_cellWidth * scale);
var yOffset = drawingWindowState.Y / (_cellHeight * scale);
var cellWidth = (int)(_cellWidth * scale);
var cellHeight = (int)(_cellHeight * scale);
var xCellsAmount = target.PixelWidth / cellWidth;
var yCellsAmount = target.PixelHeight / cellHeight;
var xPixelOffset = (int)((xOffset - Math.Truncate(xOffset)) * cellWidth);
var yPixelOffset = (int)((yOffset - Math.Truncate(yOffset)) * cellHeight);
var targetRect = new Rect(0, 0, cellWidth, cellHeight);
for (var y = 0; y <= yCellsAmount; y++)
{
for (var x = 0; x <= xCellsAmount; x++)
{
var node = map.SafeNodeAt(x - (int)xOffset, y - (int)yOffset);
if (ReferenceEquals(node, null))
{
continue;
}
targetRect.X = x * cellWidth + xPixelOffset;
targetRect.Y = y * cellHeight + yPixelOffset;
foreach (var image in imageProvider(node, x, y))
{
target.Blit(targetRect, image, _sourceRect);
}
}
}
}
