/// <summary>
/// Draws this object to the <see cref="T:EscherTiler.Graphics.IGraphics" /> provided.
/// </summary>
/// <param name="graphics">The graphics object to use to draw this object.</param>
public override void Draw(IGraphics graphics)
{
if (_resourceManager == null)
{
throw new ObjectDisposedException(nameof(ShapeController));
}
graphics.ResourceManager = _resourceManager;
foreach (Shape shape in Shapes)
{
using (IGraphicsPath path = graphics.CreatePath())
{
bool first = true;
foreach (Vertex vertex in shape.Vertices)
{
if (first)
{
path.Start(vertex.Location);
}
else
{
path.AddLine(vertex.Location);
}
first = false;
}
path.End();
graphics.DrawPath(path);
}
}
}
/// <summary>
/// Populates the graphics path given from this tile.
/// </summary>
/// <param name="path">The path.</param>
public void PopulateGraphicsPath([NotNull] IGraphicsPath path)
{
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
bool first = true;
Matrix3x2 lastTransform = Matrix3x2.Identity;
Edge lastEdge = null;
foreach (EdgePartShape partShape in PartShapes)
{
Matrix3x2 edgeTransform = partShape.Edge == lastEdge
? lastTransform
: partShape.GetLineTransform() * Transform;
lastTransform = edgeTransform;
lastEdge = partShape.Edge;
IEnumerable <ILine> lines = partShape.Lines;
foreach (ILine line in partShape.Part.IsClockwise ? lines : lines.Reverse())
{
if (first)
{
first = false;
path.Start(Vector2.Transform(partShape.Part.IsClockwise ? line.Start : line.End, edgeTransform));
}
line.AddToPath(path, edgeTransform, !partShape.Part.IsClockwise);
}
}
path.End();
}
