public bool contains(scBoundingBox other)
{
var deltaUpperLeft = other.upperLeft - upperLeft;
var deltaLowerRight = lowerRight - other.lowerRight;
return deltaUpperLeft.X >= 0 && deltaUpperLeft.Y >= 0 && deltaLowerRight.X >= 0 && deltaLowerRight.Y >= 0;
}
public static scBoundingBox createFromPositionAndHalfExtents(Vector2 position, Vector2 halfExtents)
{
var boundingBox = new scBoundingBox();
boundingBox.position = position;
boundingBox.halfExtents = halfExtents;
return boundingBox;
}
public static scBoundingBox createFromBoundingVertices(Vector2 upperLeft, Vector2 lowerRight)
{
var boundingBox = new scBoundingBox();
boundingBox.halfExtents = (lowerRight - upperLeft) / 2.0f;
boundingBox.position = upperLeft + boundingBox.halfExtents;
return boundingBox;
}
public static scBoundingBox union(scBoundingBox first, scBoundingBox second)
{
Vector2 firstUpper = first.upperLeft;
Vector2 firstLower = first.lowerRight;
Vector2 secondUpper = second.upperLeft;
Vector2 secondLower = second.lowerRight;
var newUpper = new Vector2(Math.Min(firstUpper.X, secondUpper.X), Math.Min(firstUpper.Y, secondUpper.Y));
var newLower = new Vector2(Math.Max(firstLower.X, secondLower.X), Math.Max(firstLower.Y, secondLower.Y));
return createFromBoundingVertices(newUpper, newLower);
}
public static Rectangle toXNARectangle(scBoundingBox boundingBox)
{
var rectangle = new Rectangle();
Vector2 upperLeft = boundingBox.upperLeft;
Vector2 lowerRight = boundingBox.lowerRight;
Vector2 size = lowerRight - upperLeft;
rectangle.Offset((int)upperLeft.X, (int)upperLeft.Y);
rectangle.Width = (int)size.X;
rectangle.Height = (int)size.Y;
return rectangle;
}
public static bool overlaps(scBoundingBox first, scBoundingBox second)
{
return first.contains(second.upperLeft)
|| first.contains(second.upperRight)
|| first.contains(second.lowerLeft)
|| first.contains(second.lowerRight)
|| second.contains(first.upperLeft)
|| second.contains(first.upperRight)
|| second.contains(first.lowerLeft)
|| second.contains(first.lowerRight);
}