static_isFrontFacing static method

bool static_isFrontFacing(
  1. Vector3 a,
  2. Vector3 b,
  3. Vector3 c,
  4. Vector3 direction,
)

Implementation

static bool static_isFrontFacing(
    Vector3 a, Vector3 b, Vector3 c, Vector3 direction) {
  _v0.subVectors(c, b);
  _v1.subVectors(a, b);

  // strictly front facing
  return (_v0.cross(_v1).dot(direction) < 0) ? true : false;
}