public bool PointingInward(Vector2 position, float angle)
{
Velocity tmp = new Velocity(2*(bounds.Width + bounds.Height), angle, true);
Vector2 limit = tmp.Move(position);
int clip = 0;
int count = 0;
for (int i = 0; i < NumberOfSides(); i++)
{
ColisionInfo info = LineManager.LinesIntersect(position, limit, GetCorner(i), GetCorner((i + 1) % NumberOfSides()));
switch(info.Type)
{
case 0:
break;
case 1:
if (FloatHelp.ApproxEquals(info.IntersectionPointA.Value, position, .01f))
{ }
else
{
clip++;
}
break;
case 2:
break;
case 3:
count++;
break;
}
}
return (count + (clip/2)) % 2 == 1;
}
private static bool PointOnLineSSI(DBLV A, DBLV B, DBLV point)
{
bool onX = (point.X >= Math.Min(A.X, B.X) && point.X <= Math.Max(A.X, B.X)) || FloatHelp.ApproxEquals(point.X, A.X, .001) || FloatHelp.ApproxEquals(point.X, B.X, .001);
bool onY = (point.Y >= Math.Min(A.Y, B.Y) && point.Y <= Math.Max(A.Y, B.Y)) || FloatHelp.ApproxEquals(point.Y, A.Y, .001) || FloatHelp.ApproxEquals(point.Y, B.Y, .001);
return(onX && onY);
}
public bool ApproxEquals(DBLV obj, double margin)
{
return(FloatHelp.ApproxEquals(this, obj, margin));
}
private static bool PointOnLineSSI(Vector2 A, Vector2 B, Vector2 point)
{
bool onX = (point.X >= Math.Min(A.X, B.X) && point.X <= Math.Max(A.X, B.X)) || FloatHelp.ApproxEquals(point.X, A.X, .001f) || FloatHelp.ApproxEquals(point.X, B.X, .001f);
bool onY = (point.Y >= Math.Min(A.Y, B.Y) && point.Y <= Math.Max(A.Y, B.Y)) || FloatHelp.ApproxEquals(point.Y, A.Y, .001f) || FloatHelp.ApproxEquals(point.Y, B.Y, .001f);
return(onX && onY);
}