public override object Clone()
{
Vector2[] points = new Vector2[_points.Count];
int counter = 0;
foreach (Vector2 vec in _points)
{
points[counter] = (Vector2)vec.Clone();
counter++;
}
Polygon2 shape = new Polygon2(points);
return(shape);
}
public static Shape2 Convert(Polygon2 inPolygon, ShapeType shapeType)
{
Vector2 corner = inPolygon.Corner;
Vector2 size = inPolygon.GetSize();
switch (shapeType)
{
case ShapeType.Circle:
return(new Circle((corner + size / 2f), (size.X + size.Y) / 4f));
case ShapeType.Rectangle:
return(new Rectangle((corner + size / 2f), size.X, size.Y));
}
return(inPolygon);
}
public bool Touch(Polygon2 inShape)
{
bool inside = true;
Polygon2 selfPoly = (Polygon2)GeoConverter.Convert(this, ShapeType.Polygon);
Vector2 primoPoint = null;
Vector2 lastPoint = null;
foreach (Vector2 vec in inShape.Points)
{
if (lastPoint != null)
{
for (int i = 0; i < 4; i++)
{
if (Line.LineIntersectsLine(selfPoly.Points[0 + i], selfPoly.Points[(1 + i) % 4], vec, lastPoint))
{
return(true);
}
}
}
else
{
primoPoint = new Vector2(vec.X, vec.Y);
}
//1 point not inside ? it's not inside...
if (!Contains(vec))
{
inside = false;
}
lastPoint = new Vector2(vec.X, vec.Y);
}
//Last chance... last segment
for (int i = 0; i < 4; i++)
{
if (Line.LineIntersectsLine(selfPoly.Points[0 + i], selfPoly.Points[(1 + i) % 4], primoPoint, lastPoint))
{
return(true);
}
}
return(inside);
}
public bool Touch(Polygon2 inShape)
{
bool inside = true;
Vector2 primoPoint = null;
Vector2 lastPoint = null;
for (int i = 1; i < _points.Count; i++)
{
foreach (Vector2 vec in inShape.Points)
{
if (lastPoint != null)
{
if (Line.LineIntersectsLine(_points[i - 1], _points[i], vec, lastPoint))
{
return(true);
}
}
else
{
primoPoint = new Vector2(vec.X, vec.Y);
}
lastPoint = new Vector2(vec.X, vec.Y);
}
//Last chance... last segment
if (Line.LineIntersectsLine(_points[i - 1], _points[i], primoPoint, lastPoint))
{
return(true);
}
//1 point not inside ? it's not inside...
if (!inShape.Contains(_points[i - 1]))
{
inside = false;
}
}
return(inside);
}
public bool Touch(Stroke2 inStroke)
{
Polygon2 selfPoly = (Polygon2)GeoConverter.Convert(this, ShapeType.Polygon);
Vector2 lastPoint = null;
foreach (Vector2 vec in inStroke.Points)
{
if (lastPoint != null)
{
for (int i = 0; i < 4; i++)
{
if (Line.LineIntersectsLine(selfPoly.Points[0 + i], selfPoly.Points[(1 + i) % 4], vec, lastPoint))
{
return(true);
}
}
}
lastPoint = new Vector2(vec.X, vec.Y);
}
return(false);
}