/// <inheritdoc />
public override IDisposable BeginShape(Color color)
{
path = new Drawing.Path();
return(new ActionDisposable(() =>
{
bitmap.FillPath(color, path);
}));
}
private static Drawing.Path GetDiamond(int x, int y, int cellsize)
{
var path = new Drawing.Path();
path.AddPolygon(new PointF[]
{
new PointF(x, y + cellsize * 2),
new PointF(x + cellsize * 2, y),
new PointF(x + cellsize * 4, y + cellsize * 2),
new PointF(x + cellsize * 2, y + cellsize * 4)
});
path.AddPolygon(new PointF[]
{
new PointF(x + cellsize * 1, y + cellsize * 2),
new PointF(x + cellsize * 0, y + cellsize * 4),
new PointF(x + cellsize * 2, y + cellsize * 3),
new PointF(x + cellsize * 3, y + cellsize * 2),
new PointF(x + cellsize * 2, y + cellsize * 1)
});
return(path);
}
/**
* This application generates a png out of a set of polygons that
* are constructed to cover as many possibilities as possible.
*
* So far the output is not checked automatically. Compare the
* output manually with Expected.svg.
*/
static void Main(string[] args)
{
var bitmap = new Bitmap(100, 100);
// Diamond background, should be clipped to viewport
bitmap.FillPolygon(Color.FromArgb(30, 0, 0, 255), new PointF[]
{
new PointF(10, 10),
new PointF(10, 90),
new PointF(90, 90),
new PointF(90, 10),
new PointF(10, 10)
});
// Entirely contained rectangle
bitmap.FillPolygon(Color.FromArgb(230, 40, 40, 40), new PointF[]
{
new PointF(50, -15),
new PointF(115, 50),
new PointF(50, 115),
new PointF(-15, 50)
});
// Center figures with holes
bitmap.FillPath(Color.Yellow, GetDiamond(20, 30, 10));
bitmap.FillPath(Color.FromArgb(128, 0, 0, 255), GetDiamond(40, 30, 10));
// The following shapes should not be rendered.
bitmap.FillPolygon(Color.Red, new PointF[]
{
new PointF(-10, -15),
new PointF(-5, -10),
new PointF(0, 110),
new PointF(-15, 115)
});
bitmap.FillPolygon(Color.Red, new PointF[]
{
new PointF(115, -15),
new PointF(120, -10),
new PointF(120, 110),
new PointF(115, 115)
});
var surrounding = new Drawing.Path();
surrounding.AddPolygon(new PointF[]
{
new PointF(-20, -20),
new PointF(-20, 120),
new PointF(120, 120),
new PointF(120, -20)
});
// Hole
surrounding.AddPolygon(new PointF[]
{
new PointF(-10, -10),
new PointF(110, -10),
new PointF(110, 110),
new PointF(-10, 110),
});
// Black with antialiasing.
// Used to ensure there are no rounding errors.
bitmap.FillPolygon(Color.Black, new PointF[] {
new PointF(5, 5),
new PointF(15, 5),
new PointF(25, 25),
new PointF(15, 25)
});
bitmap.FillPolygon(Color.Black, new PointF[] {
new PointF(15, 5),
new PointF(25, 5),
new PointF(15, 25),
new PointF(5, 25)
});
// White with antialiasing.
// Used to ensure there are no rounding errors.
bitmap.FillPolygon(Color.White, new PointF[] {
new PointF(5, 75),
new PointF(15, 75),
new PointF(25, 95),
new PointF(15, 95)
});
bitmap.FillPolygon(Color.White, new PointF[] {
new PointF(15, 75),
new PointF(25, 75),
new PointF(15, 95),
new PointF(5, 95)
});
using (var f = File.Create("actual.png"))
{
bitmap.SaveAsPng(f);
}
}
public void Test()
{
using (var testBed = TestBed.Create <RendererTests>(TestContext))
{
var bitmap = new Bitmap(100, 100);
// Diamond background, should be clipped to viewport
bitmap.FillPolygon(Color.FromArgb(30, 0, 0, 255), new PointF[]
{
new PointF(10, 10),
new PointF(10, 90),
new PointF(90, 90),
new PointF(90, 10),
new PointF(10, 10)
});
// Entirely contained rectangle
bitmap.FillPolygon(Color.FromArgb(230, 40, 40, 40), new PointF[]
{
new PointF(50, -15),
new PointF(115, 50),
new PointF(50, 115),
new PointF(-15, 50)
});
// Center figures with holes
bitmap.FillPath(Color.Yellow, GetDiamond(20, 30, 10));
bitmap.FillPath(Color.FromArgb(128, 0, 0, 255), GetDiamond(40, 30, 10));
// The following shapes should not be rendered.
bitmap.FillPolygon(Color.Red, new PointF[]
{
new PointF(-10, -15),
new PointF(-5, -10),
new PointF(0, 110),
new PointF(-15, 115)
});
bitmap.FillPolygon(Color.Red, new PointF[]
{
new PointF(115, -15),
new PointF(120, -10),
new PointF(120, 110),
new PointF(115, 115)
});
var surrounding = new Drawing.Path();
surrounding.AddPolygon(new PointF[]
{
new PointF(-20, -20),
new PointF(-20, 120),
new PointF(120, 120),
new PointF(120, -20)
});
// Hole
surrounding.AddPolygon(new PointF[]
{
new PointF(-10, -10),
new PointF(110, -10),
new PointF(110, 110),
new PointF(-10, 110),
});
// Black with antialiasing.
// Used to ensure there are no rounding errors.
bitmap.FillPolygon(Color.Black, new PointF[] {
new PointF(5, 5),
new PointF(15, 5),
new PointF(25, 25),
new PointF(15, 25)
});
bitmap.FillPolygon(Color.Black, new PointF[] {
new PointF(15, 5),
new PointF(25, 5),
new PointF(15, 25),
new PointF(5, 25)
});
// White with antialiasing.
// Used to ensure there are no rounding errors.
bitmap.FillPolygon(Color.White, new PointF[] {
new PointF(5, 75),
new PointF(15, 75),
new PointF(25, 95),
new PointF(15, 95)
});
bitmap.FillPolygon(Color.White, new PointF[] {
new PointF(15, 75),
new PointF(25, 75),
new PointF(15, 95),
new PointF(5, 95)
});
using (var stream = new MemoryStream())
{
bitmap.SaveAsPng(stream);
stream.Position = 0;
testBed.AssertEqual(stream, "render.png");
}
}
}
