mattatz

#ifndef _MATRIX_TO_QUATERNION_
#define _MATRIX_TO_QUATERNION_

// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/
float4 matrix_to_quaternion(float4x4 m) {

	float tr = m[0][0] + m[1][1] + m[2][2];
	float4 q = float4(0, 0, 0, 0);

	if (tr > 0) {

mattatz

using UnityEngine;
using System.Collections;

using System;
using System.Runtime.InteropServices;

namespace Utils {

    // ここからコードを拝借させてもらいました！
    // http://answers.unity3d.com/questions/13523/is-there-a-way-to-set-the-position-of-a-standalone.html

mattatz

#ifndef _LOOK_AT_MATRIX_
#define _LOOK_AT_MATRIX_

float4x4 look_at_matrix(float3 at, float3 eye, float3 up) {
	float3 zaxis = normalize(at - eye);
	float3 xaxis = normalize(cross(up, zaxis));
	float3 yaxis = cross(zaxis, xaxis);
	return float4x4(
		xaxis.x, yaxis.x, zaxis.x, 0,
		xaxis.y, yaxis.y, zaxis.y, 0,

mattatz

using UnityEngine;
using System.Collections;

namespace mattatz.Utils {

    /*
     * FBXモデルのrootにhelperオブジェクトが置いてある場合に発生する回転のバグを修正するやつ．
     * rootオブジェクトをx軸に-90度回転させ，親オブジェクトを追加する．
     * http://answers.unity3d.com/questions/13988/asset-import-from-3dsmax-rotation-issue.html
     */

mattatz

using UnityEngine;

#if UNITY_EDITOR
using UnityEditor;
#endif

using System.IO;
using System.Collections;

namespace mattatz.Utils {

mattatz

using Random = System.Random;

using UnityEngine;

namespace mattatz {

    public class Rand {

        Random rnd;

mattatz

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;

using UnityEngine;

namespace Utils
{

mattatz

// Column major 4x4 matrix for CUDA.
// Sources:
//  - https://github.com/JAGJ10/Snow/blob/master/Snow/matrix.h
//  - https://github.com/mrdoob/three.js/blob/master/src/math/Matrix4.js

#pragma once

#include "cuda_runtime.h"

struct mat4 {

mattatz

#ifndef _EASING_INCLUDED_
#define _EASING_INCLUDED_

float ease_linear(float x) {
	return x;
}

float ease_in_quad(float x) {
	float t = x; float b = 0; float c = 1; float d = 1;
	return c*(t/=d)*t + b;

mattatz

#ifndef __QUATERNION_INCLUDED__
#define __QUATERNION_INCLUDED__

#define QUATERNION_IDENTITY float4(0, 0, 0, 1)

#ifndef PI
#define PI 3.14159265359f
#endif 

// Quaternion multiplication