public static List<PointHits> TestCollisionPoint(PrimitiveShape shape1, int shape1ID, PrimitiveShape shape2, int shape2ID)
{
List<PointHits> hits = new List<PointHits>();
if (shape1.Bounds.Intersects(shape2.Bounds))
{
//return hits;
//simple check if the first polygon contains any points from the second
for (int i = 0; i < shape2.transformedVertices.Length; i++)
if (shape1.ContainsPoint(shape2.transformedVertices[i]))
hits.Add(new PointHits(shape2.vertices[i], shape1ID, shape2ID));
//switch around and test the other way
for (int i = 0; i < shape1.transformedVertices.Length; i++)
if (shape2.ContainsPoint(shape1.transformedVertices[i]))
hits.Add(new PointHits(shape1.vertices[i], shape1ID, shape2ID));
}
return hits;
}
public static bool TestCollision(PrimitiveShape shape1, PrimitiveShape shape2)
{
if (shape1.Bounds.Intersects(shape2.Bounds))
{
//return false;
//simple check if the first polygon contains any points from the second
for (int i = 0; i < shape2.transformedVertices.Length; i++)
if (shape1.ContainsPoint(shape2.transformedVertices[i]))
return true;
//switch around and test the other way
for (int i = 0; i < shape1.transformedVertices.Length; i++)
if (shape2.ContainsPoint(shape1.transformedVertices[i]))
return true;
return false;
//now we have to check for line segment intersections
for (int i = 0; i < shape1.transformedVertices.Length; i++)
{
//get the two points from a segment on shape 1
Vector2 a = shape1.transformedVertices[i];
Vector2 b = shape1.transformedVertices[(i + 1) % shape1.transformedVertices.Length];
for (int j = 0; j < shape2.transformedVertices.Length; j++)
{
//get two points from a segment on shape 2
Vector2 c = shape2.transformedVertices[j];
Vector2 d = shape2.transformedVertices[(j + 1) % shape2.transformedVertices.Length];
//figure out of we have an intersection
if (segmentsIntersect(a, b, c, d))
return true;
}
}
}
return false;
}