private static void DrawCollisionLayer(SKCanvas canvas, TmxLayer tmxLayer, SKColor polyColor, SKColor lineColor)
{
LayerClipper.TransformPointFunc xfFunc = (x, y) => new ClipperLib.IntPoint(x, y);
LayerClipper.ProgressFunc progFunc = (prog) => { }; // do nothing
ClipperLib.PolyTree solution = LayerClipper.ExecuteClipper(tmxLayer.TmxMap, tmxLayer, xfFunc, progFunc);
using (SKPaint paint = new SKPaint())
{
// Draw all closed polygons
// First, add them to the path
// (But are we using convex polygons are complex polygons?
using (SKPath path = new SKPath())
{
var polygons = tmxLayer.IsExportingConvexPolygons() ? LayerClipper.SolutionPolygons_Simple(solution) : LayerClipper.SolutionPolygons_Complex(solution);
foreach (var pointfArray in polygons)
{
var pts = pointfArray.ToSkPointArray();
path.AddPoly(pts, true);
}
// Then, fill and draw the path full of polygons
if (path.PointCount > 0)
{
paint.Style = SKPaintStyle.Fill;
paint.Color = polyColor;
canvas.DrawPath(path, paint);
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = StrokeWidthThick;
paint.Color = lineColor;
canvas.DrawPath(path, paint);
}
}
// Draw all lines (open polygons)
using (SKPath path = new SKPath())
{
foreach (var points in ClipperLib.Clipper.OpenPathsFromPolyTree(solution))
{
var pts = points.Select(pt => new SKPoint(pt.X, pt.Y)).ToArray();
path.AddPoly(pts, false);
}
if (path.PointCount > 0)
{
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = StrokeWidthThick;
paint.Color = lineColor;
canvas.DrawPath(path, paint);
}
}
}
}
private static void DrawLayerColliders(Graphics g, TmxLayer tmxLayer, Color polyColor, Color lineColor, float scale)
{
LayerClipper.TransformPointFunc xfFunc = (x, y) => new ClipperLib.IntPoint(x, y);
LayerClipper.ProgressFunc progFunc = (prog) => { }; // do nothing
ClipperLib.PolyTree solution = LayerClipper.ExecuteClipper(tmxLayer.TmxMap, tmxLayer, xfFunc, progFunc);
float inverseScale = 1.0f / scale;
if (inverseScale > 1)
{
inverseScale = 1;
}
using (GraphicsPath path = new GraphicsPath())
using (Pen pen = new Pen(lineColor, 2.0f * inverseScale))
using (Brush brush = TmxHelper.CreateLayerColliderBrush(polyColor))
{
// Draw all closed polygons
// First, add them to the path
// (But are we using convex polygons are complex polygons?
var polygons = tmxLayer.IsExportingConvexPolygons() ? LayerClipper.SolutionPolygons_Simple(solution) : LayerClipper.SolutionPolygons_Complex(solution);
foreach (var pointfArray in polygons)
{
path.AddPolygon(pointfArray);
}
// Then, fill and draw the path full of polygons
if (path.PointCount > 0)
{
g.FillPath(brush, path);
g.DrawPath(pen, path);
}
// Draw all lines (open polygons)
path.Reset();
foreach (var points in ClipperLib.Clipper.OpenPathsFromPolyTree(solution))
{
var pointfs = points.Select(pt => new PointF(pt.X, pt.Y));
path.StartFigure();
path.AddLines(pointfs.ToArray());
}
if (path.PointCount > 0)
{
g.DrawPath(pen, path);
}
}
}
