func floatArrayEq(xs, ys []float64) bool {
if len(xs) != len(ys) {
return false
}
for i := 0; i < len(xs); i++ {
if !num.AlmostEqual(xs[i], ys[i]) {
return false
}
}
return true
}
func NewFinitePlane(anchor, coplanarX, coplanarY vec.Vector, width, height float64) *FinitePlane {
if len(anchor) != len(coplanarX) || len(anchor) != len(coplanarY) {
panic("")
}
plane := new(FinitePlane)
plane.Width = width
plane.Height = height
plane.CoplanarX = coplanarX.Normalize()
plane.CoplanarY = coplanarY.Normalize()
plane.Normal = vec.Cross(plane.CoplanarX, plane.CoplanarY)
// If coplanarX and coplanarY are colinear, we'll have issues.
if num.AlmostEqual(0.0, plane.Normal.Norm()) {
panic("")
}
return plane
}