Method AABB

common/collision.go:155–187

AABB returns the minimum and maximum point for the given SpaceComponent. It hereby takes into account the rotation of the Component - it may very well be that the Minimum as given by engo.AABB, is smaller than the Position of the object (i.e. when rotated). This basically returns the "outer rectang

()

// points, a minimum and a maximum, the "rectangle" resulting from this `AABB`, is not rotated in any way. However,
// depending on the rotation of the `SpaceComponent`, this `AABB` may be larger than the original `SpaceComponent`.
func (sc SpaceComponent) AABB() engo.AABB {
	if sc.Rotation == 0 {
		return engo.AABB{
			Min: sc.Position,
			Max: engo.Point{X: sc.Position.X + sc.Width, Y: sc.Position.Y + sc.Height},
		}
	}

	corners := sc.Corners()

	var (
		xMin float32 = math.MaxFloat32
		xMax float32 = -math.MaxFloat32
		yMin float32 = math.MaxFloat32
		yMax float32 = -math.MaxFloat32
	)

	for i := 0; i < 4; i++ {
		if corners[i].X < xMin {
			xMin = corners[i].X
		} else if corners[i].X > xMax {
			xMax = corners[i].X
		}
		if corners[i].Y < yMin {
			yMin = corners[i].Y
		}
		if corners[i].Y > yMax {
			yMax = corners[i].Y
		}
	}

	return engo.AABB{Min: engo.Point{X: xMin, Y: yMin}, Max: engo.Point{X: xMax, Y: yMax}}
}

// Corners returns the location of the four corners of the rectangular plane defined by the `SpaceComponent`, taking
// into account any possible rotation.