public bool IsPointInPoly(VectorF point)
{
int i, j;
bool c = false;
for (i = 0, j = Points.Count - 1; i < Points.Count; i++)
{
switch (SimpleGeometry.GetEdgeType(point, Points[i] + Position, Points[j] + Position))
{
case SimpleGeometry.EdgeType.TOUCHING:
return(true);
case SimpleGeometry.EdgeType.CROSSING:
c = !c;
break;
}
j = i;
}
return(c);
}
public override bool IsCollision(Collision collision)
{
if (GetMacroCollisionRect().IsMacroCollision(collision.GetMacroCollisionRect()) == false)
{
return(false);
}
if (collision.GetType() == typeof(PolygonCollision))
{
PolygonCollision poly = (PolygonCollision)collision;
for (int i = 0, p = Points.Count - 1; i < Points.Count; i++)
{
for (int j = 0, q = poly.Points.Count - 1; j < poly.Points.Count; j++)
{
if (SimpleGeometry.IsIntersection(Points[i] + Position, Points[p] + Position, poly.Points[j] + poly.Position, poly.Points[q] + poly.Position))
{
return(true);
}
q = j;
}
p = i;
}
return(IsPointInPoly(poly.Points[0] + poly.Position) || poly.IsPointInPoly(Points[0] + Position));
}
else if (collision.GetType() == typeof(BoxCollision))
{
BoxCollision box = (BoxCollision)collision;
for (int i = 0, j = Points.Count - 1; i < Points.Count; i++)
{
if (SimpleGeometry.IsIntersection(Points[i] + Position, Points[j] + Position, box.Position, box.Position + new VectorF(box.Size.X, 0)) ||
SimpleGeometry.IsIntersection(Points[i] + Position, Points[j] + Position, box.Position + new VectorF(box.Size.X, 0), box.Position + box.Size) ||
SimpleGeometry.IsIntersection(Points[i] + Position, Points[j] + Position, box.Position + box.Size, box.Position + new VectorF(0, box.Size.Y)) ||
SimpleGeometry.IsIntersection(Points[i] + Position, Points[j] + Position, box.Position + new VectorF(0, box.Size.Y), box.Position))
{
return(true);
}
j = i;
}
return(IsPointInPoly(box.Position) || (((Points[0].X + Position.X) > box.Position.X) && ((Points[0].X + Position.X) < (box.Position.X + box.Size.X)) &&
((Points[0].Y + Position.Y) > box.Position.Y) && ((Points[0].Y + Position.Y) < (box.Position.Y + box.Size.Y))));
}
else if (collision.GetType() == typeof(CircleCollision))
{
CircleCollision circle = (CircleCollision)collision;
for (int i = 0, j = Points.Count - 1; i < Points.Count; i++)
{
if (SimpleGeometry.IsSegmentIntersectsWithCircle(circle.Center(), circle.Radius, Points[i] + Position, Points[j] + Position))
{
return(true);
}
j = i;
}
return(IsPointInPoly(circle.Center()) || ((Points[0] + Position - circle.Center()).Length() < circle.Radius));
}
else
{
return(collision.IsCollision(this));
}
}
