public void Render(ICanvas canvas, int width, int height, IPixelMapper pixelMapper)
{
if (pixelMapper.CellSize != _lastCellSize)
{
_imageCache.Clear();
_lastCellSize = pixelMapper.CellSize;
}
foreach (T entity in _layout)
{
var renderer = _renderers.FirstOrDefault(r => r.ShouldRender(entity));
if (renderer is null)
{
// TODO: Fill with Red to indicate error?
continue;
}
(int x, int y, bool onScreen) = pixelMapper.CoordsToViewPortPixels(entity.Column, entity.Row);
if (!onScreen)
{
continue;
}
string key = $"{entity.GetType().Name}.{entity.Identifier}";
if (_imageCache.IsDirty(key))
{
using IImageCanvas imageCanvas = _imageFactory.CreateImageCanvas(pixelMapper.CellSize, pixelMapper.CellSize);
float scale = pixelMapper.CellSize / 100.0f;
imageCanvas.Canvas.Scale(scale, scale);
renderer.Render(imageCanvas.Canvas, entity);
_imageCache.Set(key, imageCanvas.Render());
}
using (canvas.Scope())
{
canvas.Translate(x, y);
canvas.ClipRect(new Rectangle(0, 0, pixelMapper.CellSize, pixelMapper.CellSize), false, false);
canvas.DrawImage(_imageCache.Get(key) !, 0, 0);
}
}
}
public IImage GetTerrainImage()
{
if (_imageCache.IsDirty(this))
{
int width = _pixelMapper.Columns;
int _height = _pixelMapper.Rows;
using IImageCanvas textureImage = _imageFactory.CreateImageCanvas(width, _height);
foreach (Terrain terrain in _terrainMap)
{
Color colour = GetTerrainColour(terrain);
PaintBrush paint = GetPaint(colour);
textureImage.Canvas.DrawRect(terrain.Column, terrain.Row, 1, 1, paint);
}
_imageCache.Set(this, textureImage.Render());
Changed?.Invoke(this, EventArgs.Empty);
}
return(_imageCache.Get(this) !);
}
