static public bool Collides(Circle circle, TopLeftRectangle rectangle, out Vector2 correction)
{
bool result = Collides(rectangle, circle, out correction);
correction = correction.Inverse();
return(result);
}
static public Vector2 NormalizedCoordinates(this Vector2 point, TopLeftRectangle referential)
{
Vector2 result = (point - referential.Position) / referential.Size;
if (float.IsNaN(result.X))
{
result = result.SetX(0);
}
if (float.IsNaN(result.Y))
{
result = result.SetY(0);
}
return(result);
}
static public bool Intersects(this TopLeftRectangle rectangleA, TopLeftRectangle rectangleB, out TopLeftRectangle intersection)
{
float left = MathHelper.Max(rectangleA.Left, rectangleB.Left);
float right = MathHelper.Min(rectangleA.Right, rectangleB.Right);
float top = MathHelper.Max(rectangleA.Top, rectangleB.Top);
float bottom = MathHelper.Min(rectangleA.Bottom, rectangleB.Bottom);
if (left >= right || top >= bottom)
{
intersection = TopLeftRectangle.Void;
return(false);
}
intersection = new TopLeftRectangle(left, top, right - left, bottom - top);
return(true);
}
static public bool Collides(TopLeftRectangle rectangle, TopLeftRectangle other, out Vector2 correction)
{
if (Intersects(rectangle, other, out TopLeftRectangle intersection))
{
bool isWiderThanTall = intersection.Width > intersection.Height;
if (isWiderThanTall)
{
correction = rectangle.Center.Y <= other.Center.Y ? new Vector2(0, -intersection.Height) : new Vector2(0, intersection.Height);
}
else
{
correction = rectangle.Center.X <= other.Center.X ? new Vector2(-intersection.Width, 0) : new Vector2(intersection.Width, 0);
}
return(true);
}
correction = Vector2.Zero;
return(false);
}
static public Vector2 ClampToRectangle(this Vector2 point, TopLeftRectangle rectangle)
{
if (point.X < rectangle.Left)
{
point.X = rectangle.Left;
}
if (point.X > rectangle.Right)
{
point.X = rectangle.Right;
}
if (point.Y < rectangle.Top)
{
point.Y = rectangle.Top;
}
if (point.Y > rectangle.Bottom)
{
point.Y = rectangle.Bottom;
}
return(point);
}
static public bool Collides(TopLeftRectangle rectangle, Circle circle, out Vector2 correction)
{
// Find the closest point to the circle within the rectangle
float closestX = MathHelper.Clamp(circle.Center.X, rectangle.Left, rectangle.Right);
float closestY = MathHelper.Clamp(circle.Center.Y, rectangle.Top, rectangle.Bottom);
var closest = new Vector2(closestX, closestY);
// Calculate the distance between the circle's center and this closest point
Vector2 distance = circle.Center - closest;
// If the distance is less than the circle's radius, an intersection occurs
float radiusIntersection = circle.Radius - distance.Length();
if (radiusIntersection > 0)
{
correction = radiusIntersection * (closest - rectangle.Center).Normalized();
return(true);
}
correction = Vector2.Zero;
return(false);
}
static public TopLeftRectangle EncaseRectangle(this TopLeftRectangle inner, TopLeftRectangle outer)
{
if (inner.Left < outer.Left)
{
inner.Left += outer.Left - inner.Left;
}
else if (inner.Right > outer.Right)
{
inner.Left -= inner.Right - outer.Right;
}
if (inner.Top < outer.Top)
{
inner.Top += outer.Top - inner.Top;
}
else if (inner.Bottom > outer.Bottom)
{
inner.Top -= inner.Bottom - outer.Bottom;
}
return(inner);
}
static public TopLeftRectangle ClampToRectangle(this TopLeftRectangle inner, TopLeftRectangle outer)
{
if (inner.Left < outer.Left)
{
inner.Width -= outer.Left - inner.Left;
inner.Left = outer.Left;
}
if (inner.Right > outer.Right)
{
inner.Width -= inner.Right - outer.Right;
}
if (inner.Top < outer.Top)
{
inner.Height -= outer.Top - inner.Top;
inner.Top = outer.Top;
}
if (inner.Bottom > outer.Bottom)
{
inner.Height -= inner.Bottom - outer.Bottom;
}
return(inner);
}
static public bool Intersects(this Circle circle, TopLeftRectangle rectangle) => Collides(rectangle, circle, out _);
static public bool Intersects(this TopLeftRectangle rectangleA, TopLeftRectangle rectangleB)
{
return(Intersects(rectangleA, rectangleB, out TopLeftRectangle _));
}
static public TopLeftRectangle Rescale(this TopLeftRectangle rectangle, TopLeftRectangle oldReferential, TopLeftRectangle newReferential)
{
return(rectangle.NormalizedCoordinates(oldReferential).Scale(newReferential));
}
static public Vector2 Rescale(this Vector2 point, TopLeftRectangle oldRectangle, TopLeftRectangle newRectangle)
{
return(point.NormalizedCoordinates(oldRectangle).Scale(newRectangle));
}
static public TopLeftRectangle Scale(this TopLeftRectangle rectangle, TopLeftRectangle referential)
{
return(new TopLeftRectangle(rectangle.Position * referential.Size + referential.Position, rectangle.Size * referential.Size));
}
static public Vector2 Scale(this Vector2 point, TopLeftRectangle rectangle)
{
return(point * rectangle.Size + rectangle.Position);
}
static public TopLeftRectangle NormalizedCoordinates(this TopLeftRectangle rectangle, TopLeftRectangle referential)
{
return(new TopLeftRectangle((rectangle.Position - referential.Position) / referential.Size, rectangle.Size / referential.Size));
}