public FloatRectangle Intersection(FloatRectangle o)
{
if (!Intersects(o))
{
return(new FloatRectangle(float.NaN, float.NaN, float.NaN, float.NaN));
}
var x1 = (float)Math.Max(X, o.X);
var x2 = (float)Math.Min(X + Width, o.X + o.Width);
var y1 = (float)Math.Max(Y, o.Y);
var y2 = (float)Math.Min(Y + Height, o.Y + o.Height);
return(new FloatRectangle(x1, y1, x2 - x1, y2 - y1));
}
public bool ContainsCompletely(FloatRectangle o) => X <= o.X && Y <= o.Y && X + Width >= o.X + o.Width && Y + Height >= o.Y + o.Height;
public bool Intersects(FloatRectangle o) => !(X > o.X + o.Width || o.X > X + Width || Y > o.Y + o.Height || o.Y > Y + Height);
public bool StrictlyIntersects(FloatRectangle o) => !(X >= o.X + o.Width || o.X >= X + Width || Y >= o.Y + o.Height || o.Y >= Y + Height);
private FloatRectangle DeriveBoundingBox()
{
// Find the curve's bounding box
float minx = float.PositiveInfinity;
float maxx = float.NegativeInfinity;
float miny = float.PositiveInfinity;
float maxy = float.NegativeInfinity;
for (int i = 0; i < NumDrawings; i++)
{
for (int j = DrawingIndicesStartingIds[i]; j < DrawingIndicesStartingIds[i + 1]; j++)
{
var v = Vector4.Transform(AllVertices[DrawingIndices[j]], DrawingTransforms[i]);
minx = Math.Min(minx, v.X);
maxx = Math.Max(maxx, v.X);
miny = Math.Min(miny, v.Y);
maxy = Math.Max(maxy, v.Y);
}
for (int j = DrawingCurveVerticesStartingIds[i]; j < DrawingCurveVerticesStartingIds[i + 1]; j++)
{
var v = Vector4.Transform(DrawingCurveVertices[j].Position, DrawingTransforms[i]);
minx = Math.Min(minx, v.X);
maxx = Math.Max(maxx, v.X);
miny = Math.Min(miny, v.Y);
maxy = Math.Max(maxy, v.Y);
}
for (int j = DrawingDoubleCurveVerticesStartingIds[i]; j < DrawingDoubleCurveVerticesStartingIds[i + 1]; j++)
{
var v = Vector4.Transform(DrawingDoubleCurveVertices[j].Position, DrawingTransforms[i]);
minx = Math.Min(minx, v.X);
maxx = Math.Max(maxx, v.X);
miny = Math.Min(miny, v.Y);
maxy = Math.Max(maxy, v.Y);
}
}
var rectangle = new FloatRectangle(minx, miny, maxx - minx, maxy - miny);
// Adjust it to the aspect ratio
var value = rectangle.Width * 9 - rectangle.Height * 16;
if (value < 0)
{
var oldWidth = rectangle.Width;
rectangle.Width = rectangle.Height * 16 / 9;
rectangle.X -= (rectangle.Width - oldWidth) / 2;
}
else if (value > 0)
{
var oldHeight = rectangle.Height;
rectangle.Height = rectangle.Width * 9 / 16;
rectangle.Y -= (rectangle.Height - oldHeight) / 2;
}
// Enlarge it a bit
var owidth = rectangle.Width;
var oheight = rectangle.Height;
rectangle.Width = rectangle.Width * 6 / 5;
rectangle.Height = rectangle.Height * 6 / 5;
rectangle.X -= (rectangle.Width - owidth) / 2;
rectangle.Y -= (rectangle.Height - oheight) / 2;
return(rectangle);
}
