func NewRegion(texture *Texture, x, y, w, h float32) *Region {
invTexWidth := 1.0 / texture.Width()
invTexHeight := 1.0 / texture.Height()
u := x * invTexWidth
v := y * invTexHeight
u2 := (x + w) * invTexWidth
v2 := (y + h) * invTexHeight
width := math.Abs(w)
height := math.Abs(h)
return &Region{texture, u, v, u2, v2, width, height}
}
func MinimumTranslation(rect1 AABB, rect2 AABB) Point {
mtd := Point{}
left := rect2.Min.X - rect1.Max.X
right := rect2.Max.X - rect1.Min.X
top := rect2.Min.Y - rect1.Max.Y
bottom := rect2.Max.Y - rect1.Min.Y
if left > 0 || right < 0 {
log.Println("Box aint intercepting")
return mtd
//box doesnt intercept
}
if top > 0 || bottom < 0 {
log.Println("Box aint intercepting")
return mtd
//box doesnt intercept
}
if math.Abs(left) < right {
mtd.X = left
} else {
mtd.X = right
}
if math.Abs(top) < bottom {
mtd.Y = top
} else {
mtd.Y = bottom
}
if math.Abs(mtd.X) < math.Abs(mtd.Y) {
mtd.Y = 0
} else {
mtd.X = 0
}
return mtd
}