public override bool HitTest(PointF point)
{
PointF[] rect = new PointF[4];
rect[0] = new PointF(Pos.X, Pos.Y);
rect[1] = new PointF(Pos.X, Pos.Y + Height);
rect[2] = new PointF(Pos.X + Width, Pos.Y + Height);
rect[3] = new PointF(Pos.X + Width, Pos.Y);
return(CanvasMath.PointInPoly(rect, point));
}
public override bool HitTest(PointF point)
{
PointF[] poly = new PointF[Points.Count];
int idx = 0;
foreach (PointF pathPoint in Points)
{
poly[idx++] = new PointF(pathPoint.X, pathPoint.Y);
}
return(CanvasMath.PointInPoly(poly, point));
}
public static bool PointOnLine(PointF start, PointF end, PointF point, float lineWidth)
{
PointF[] rect = new PointF[4];
if (lineWidth <= 0)
{
return(false);
}
if (end.X < start.X)
{
PointF temp = start;
start = end;
end = temp;
}
if (point.X < start.X || point.X > end.X)
{
return(false);
}
PointF ortho = new PointF(end.X - start.X, end.Y - start.Y);
float len = (float)Math.Sqrt(Math.Pow(ortho.X, 2) +
Math.Pow(ortho.Y, 2));
len = Math.Max(1.0F, len);
PointF rot = CanvasMath.RotatePoint(ortho, -90);
PointF normalized = new PointF(rot.X / len, rot.Y / len);
PointF baseVect = new PointF(normalized.X * (lineWidth / 2),
normalized.Y * (lineWidth / 2));
rect[0].X = baseVect.X + start.X;
rect[0].Y = baseVect.Y + start.Y;
rect[3].X = baseVect.X + end.X;
rect[3].Y = baseVect.Y + end.Y;
rot = CanvasMath.RotatePoint(ortho, +90);
normalized = new PointF(rot.X / len, rot.Y / len);
baseVect = new PointF(normalized.X * (lineWidth / 2),
normalized.Y * (lineWidth / 2));
rect[1].X = baseVect.X + start.X;
rect[1].Y = baseVect.Y + start.Y;
rect[2].X = baseVect.X + end.X;
rect[2].Y = baseVect.Y + end.Y;
return(CanvasMath.PointInPoly(rect, point));
}
public override bool HitTest(PointF point)
{
PointF[] rect = new PointF[4];
float radius = Width / 2;
rect[0].X = Pos.X - radius;
rect[0].Y = Pos.Y - radius;
rect[1].X = Pos.X + radius;
rect[1].Y = Pos.Y - radius;
rect[2].X = Pos.X + radius;
rect[2].Y = Pos.Y + radius;
rect[3].X = Pos.X - radius;
rect[3].Y = Pos.Y + radius;
return(CanvasMath.PointInPoly(rect, point));
}