transformDirection method
Implementation
@override
InterleavedBufferAttribute transformDirection(Matrix4 m) {
for (var i = 0, l = count; i < l; i++) {
_vector.x = getX(i)!.toDouble();
_vector.y = getY(i)!.toDouble();
_vector.z = getZ(i)!.toDouble();
_vector.transformDirection(m);
setXYZ(i, _vector.x, _vector.y, _vector.z);
}
return this;
}