public CollisionResult(float penetration, Vector2 collisionNormal, Vector2 localCollisionPoint1, Vector2 localCollisionPoint2, Circle circle1, Circle circle2)
{
Penetration = penetration;
CollisionNormal = collisionNormal;
LocalCollisionPoint1 = localCollisionPoint1;
LocalCollisionPoint2 = localCollisionPoint2;
Circle1 = circle1;
Circle2 = circle2;
}
public static CollisionResult IsColliding(Circle c1, Circle c2)
{
var distance = Vector2.Distance(c1.Position, c2.Position);
var sumOfRadius = c1.Radius + c2.Radius;
if (sumOfRadius < distance)
{
var penetration = distance - sumOfRadius;
var collisionDirection = Vector2.Normalize(c1.Position - c2.Position);
var collisionNormal = Vector2.Cross(-1, collisionDirection);
var c1LocalCollisionPoint = Vector2.Rotate(c1.Rotation, c1.Position + collisionDirection*penetration);
var c2LocalCollisionPoint = Vector2.Rotate(c2.Rotation, c1.Position - collisionDirection*penetration);
return new CollisionResult(penetration, collisionNormal, c1LocalCollisionPoint, c2LocalCollisionPoint, c1, c2);
}
return null;
}
public abstract Vector2D GetCollisionNormal(Circle otherShape, Vector2D thisPosition, Vector2D otherPosition);
public abstract float GetCollisionPenDepth(Circle otherShape, Vector2D thisPosition, Vector2D otherPosition);
public abstract bool IsCollided(Circle otherShape, Vector2D thisPosition, Vector2D otherPosition);
