public bool IsAxisColliding(RotatedRectangleF rectangle, Vector2 axis)
{
thisScalars[0] = Vector2.Dot(TopLeft, axis);
thisScalars[1] = Vector2.Dot(TopRight, axis);
thisScalars[2] = Vector2.Dot(BottomLeft, axis);
thisScalars[3] = Vector2.Dot(BottomRight, axis);
otherScalars[0] = Vector2.Dot(rectangle.TopLeft, axis);
otherScalars[1] = Vector2.Dot(rectangle.TopRight, axis);
otherScalars[2] = Vector2.Dot(rectangle.BottomLeft, axis);
otherScalars[3] = Vector2.Dot(rectangle.BottomRight, axis);
float thisRectMin = thisScalars.Min();
float thisRectMax = thisScalars.Max();
float otherRectMin = otherScalars.Min();
float otherRectMax = otherScalars.Max();
if (thisRectMax >= otherRectMax && thisRectMin <= otherRectMax)
{
return(true);
}
if (otherRectMax >= thisRectMax && otherRectMin <= thisRectMax)
{
return(true);
}
return(false);
}
public static void DrawRotatedRectangle(this SpriteBatch batch, RotatedRectangleF rectangle, Vector2 offset, Color color, float depth)
{
RotatedRectangleF offsetRect = rectangle.Offset(offset);
batch.DrawLine(offsetRect.TopLeft, offsetRect.TopRight, color, 1, depth);
batch.DrawLine(offsetRect.TopRight, offsetRect.BottomRight, color, 1, depth);
batch.DrawLine(offsetRect.BottomRight, offsetRect.BottomLeft, color, 1, depth);
batch.DrawLine(offsetRect.BottomLeft, offsetRect.TopLeft, color, 1, depth);
batch.DrawHollowCircle((new Vector2(offsetRect.baseRectangle.Left, offsetRect.baseRectangle.Top) + offsetRect.origin), 8, color, 1, 16, 1);
}
public bool Intersects(RotatedRectangleF rectangle)
{
Vector2 axisTop = TopRight - TopLeft;
Vector2 axisRight = TopRight - BottomRight;
Vector2 axisOTop = rectangle.TopRight - rectangle.TopLeft;
Vector2 axisORight = rectangle.TopRight - rectangle.BottomRight;
if (!IsAxisColliding(rectangle, axisTop) ||
!IsAxisColliding(rectangle, axisRight) ||
!rectangle.IsAxisColliding(this, axisOTop) ||
!rectangle.IsAxisColliding(this, axisORight))
{
return(false);
}
else
{
return(true);
}
}
