Cifram

let point_abs = point.abs();
// This giant if statement determines which face the point is on. Then, it
// returns the cosine of the x and y angle on that face (in fullx and fully)
// and the index of the face itself, in a tuple.
let (fullx, fully, face) =
  if point_abs.x >= point_abs.y && point_abs.x > point_abs.z {
    if point.x > 0.0 {
      (
        point.z / (point.x*point.x + point.z*point.z).sqrt(),
        point.y / (point.x*point.x + point.y*point.y).sqrt(),

Cifram

test bench_perlin2     ... bench:        27 ns/iter (+/- 5)
test bench_perlin3     ... bench:        67 ns/iter (+/- 2)
test bench_perlin4     ... bench:        81 ns/iter (+/- 3)
test bench_simplectic2 ... bench:        40 ns/iter (+/- 5)
test bench_simplectic3 ... bench:        94 ns/iter (+/- 11)
test bench_simplectic4 ... bench:       188 ns/iter (+/- 7)
test bench_simplex2    ... bench:        45 ns/iter (+/- 5)
test bench_simplex3    ... bench:       107 ns/iter (+/- 12)

Cifram

// Copyright 2013 The noise-rs developers. For a full listing of the authors,
// refer to the AUTHORS file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software

Cifram

extern crate cgmath;

use self::cgmath::Matrix4;

use scene::MeshComponent;

macro_rules! scene(
	($($comp_name:ident($comp_adder:ident, $comp_getter:ident, $comp_remover:ident, $comp_foreach:ident): $comp:ident),*) => (
		pub struct Scene {
			transforms: Vec<Option<Matrix4<f32>>>,