| public containsPoint ( Vector2 point ) : bool | ||
| point | Vector2 | |
| return | bool | |
public static bool pointToBox(Vector2 point, Box box, out CollisionResult result)
{
result = new CollisionResult();
if (box.containsPoint(point))
{
// get the point in the space of the Box
result.point = box.bounds.GetClosestPointOnRectangleBorderToPoint(point, out result.normal);
result.minimumTranslationVector = point - result.point;
return(true);
}
return(false);
}
public static bool pointToBox( Vector2 point, Box box, out CollisionResult result )
{
result = new CollisionResult();
if( box.containsPoint( point ) )
{
// get the point in the space of the Box
result.point = box.bounds.getClosestPointOnRectangleBorderToPoint( point, out result.normal );
result.minimumTranslationVector = point - result.point;
return true;
}
return false;
}
/// <summary>
/// works for circles whos center is in the box as well as just overlapping with the center out of the box.
/// </summary>
/// <returns><c>true</c>, if to box was circled, <c>false</c> otherwise.</returns>
/// <param name="circle">First.</param>
/// <param name="box">Second.</param>
/// <param name="result">Result.</param>
public static bool circleToBox(Circle circle, Box box, out CollisionResult result)
{
result = new CollisionResult();
var closestPointOnBounds =
box.bounds.getClosestPointOnRectangleBorderToPoint(circle.position, out result.normal);
// deal with circles whos center is in the box first since its cheaper to see if we are contained
if (box.containsPoint(circle.position))
{
result.point = closestPointOnBounds;
// calculate mtv. Find the safe, non-collided position and get the mtv from that.
var safePlace = closestPointOnBounds + result.normal * circle.radius;
result.minimumTranslationVector = circle.position - safePlace;
return(true);
}
float sqrDistance;
Vector2.DistanceSquared(ref closestPointOnBounds, ref circle.position, out sqrDistance);
// see if the point on the box is less than radius from the circle
if (sqrDistance == 0)
{
result.minimumTranslationVector = result.normal * circle.radius;
}
else if (sqrDistance <= circle.radius * circle.radius)
{
result.normal = circle.position - closestPointOnBounds;
var depth = result.normal.Length() - circle.radius;
result.point = closestPointOnBounds;
Vector2Ext.normalize(ref result.normal);
result.minimumTranslationVector = depth * result.normal;
return(true);
}
return(false);
}
/// <summary>
/// works for circles whos center is in the box as well as just overlapping with the center out of the box.
/// </summary>
/// <returns><c>true</c>, if to box was circled, <c>false</c> otherwise.</returns>
/// <param name="circle">First.</param>
/// <param name="box">Second.</param>
/// <param name="result">Result.</param>
public static bool circleToBox( Circle circle, Box box, out CollisionResult result )
{
result = new CollisionResult();
var closestPointOnBounds = box.bounds.getClosestPointOnRectangleBorderToPoint( circle.position, out result.normal );
// deal with circles whos center is in the box first since its cheaper to see if we are contained
if( box.containsPoint( circle.position ) )
{
result.point = closestPointOnBounds;
// calculate mtv. Find the safe, non-collided position and get the mtv from that.
var safePlace = closestPointOnBounds + result.normal * circle.radius;
result.minimumTranslationVector = circle.position - safePlace;
return true;
}
float sqrDistance;
Vector2.DistanceSquared( ref closestPointOnBounds, ref circle.position, out sqrDistance );
// see if the point on the box is less than radius from the circle
if( sqrDistance == 0 )
{
result.minimumTranslationVector = result.normal * circle.radius;
}
else if( sqrDistance <= circle.radius * circle.radius )
{
result.normal = circle.position - closestPointOnBounds;
var depth = result.normal.Length() - circle.radius;
result.point = closestPointOnBounds;
Vector2Ext.normalize( ref result.normal );
result.minimumTranslationVector = depth * result.normal;
return true;
}
return false;
}
