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axmol/cocos/editor-support/cocostudio/ext/glslutils.hpp

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/**
* glslutils, for color translate matrix
* reference: http://graficaobscura.com/matrix/index.html
* @autohr HALX99 2016
* Copyright (c) x-studio365 2016.
*/
#ifndef _GLSLUTILS_H_
#define _GLSLUTILS_H_
#include "matrix3f.hpp"
#include "cocos2d.h"
#include <string>
USING_NS_CC;
typedef float _M3X3[3][3];
typedef float _M4X4[4][4];
static cocos2d::Vec3 fastest_rgb2hsv(const cocos2d::Color3B& rgb)
{
float r = rgb.r / 255.0f;
float g = rgb.g / 255.0f;
float b = rgb.b / 255.0f;
float h, s, v;
float K = 0.f;
if (g < b)
{
std::swap(g, b);
K = -1.f;
}
if (r < g)
{
std::swap(r, g);
K = -2.f / 6.f - K;
}
float chroma = r - std::min(g, b);
h = fabs(K + (g - b) / (6.f * chroma + 1e-20f));
s = chroma / (r + 1e-20f);
v = r;
return cocos2d::Vec3(h, s, v);
}
static cocos2d::Vec3 rgb2hsv(const cocos2d::Color3B& rgb)
{
unsigned char dst_h, dst_s, dst_v;
float r = rgb.r / 255.0f;
float g = rgb.g / 255.0f;
float b = rgb.b / 255.0f;
float h, s, v; // h:0-360.0, s:0.0-1.0, v:0.0-1.0
float max = std::max({ r, g, b });
float min = std::min({ r, g, b });
v = max;
if (max == 0.0f) {
s = 0;
h = 0;
}
else if (max - min == 0.0f) {
s = 0;
h = 0;
}
else {
s = (max - min) / max;
if (max == r) {
h = 60 * ((g - b) / (max - min)) + 0;
}
else if (max == g) {
h = 60 * ((b - r) / (max - min)) + 120;
}
else {
h = 60 * ((r - g) / (max - min)) + 240;
}
}
if (h < 0) h += 360.0f;
dst_h = (unsigned char)(h / 2); // dst_h : 0-180
dst_s = (unsigned char)(s/* * 255*/); // dst_s : 0-255
dst_v = (unsigned char)(v /** 255*/); // dst_v : 0-255
return cocos2d::Vec3(dst_h / 180.f, dst_s, dst_v);
}
static void hsv2rgb(const unsigned char &src_h, const unsigned char &src_s, const unsigned char &src_v, unsigned char &dst_r, unsigned char &dst_g, unsigned char &dst_b)
{
float h = src_h * 2.0f; // 0-360
float s = src_s / 255.0f; // 0.0-1.0
float v = src_v / 255.0f; // 0.0-1.0
float r, g, b; // 0.0-1.0
int hi = (int)(h / 60.0f) % 6;
float f = (h / 60.0f) - hi;
float p = v * (1.0f - s);
float q = v * (1.0f - s * f);
float t = v * (1.0f - s * (1.0f - f));
switch (hi) {
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
dst_r = (unsigned char)(r * 255); // dst_r : 0-255
dst_g = (unsigned char)(g * 255); // dst_r : 0-255
dst_b = (unsigned char)(b * 255); // dst_r : 0-255
}
namespace glslutils
{
#define FLT_SQRT_2 1.4142135623730950488016887242097
#define FLT_SQRT_3 1.7320508075688772935274463415059
#define FLT_XRS (1 / FLT_SQRT_2)
#define FLT_XRC FLT_XRS
#define FLT_YRS (-1 / FLT_SQRT_3)
#define FLT_YRC (FLT_SQRT_2 / FLT_SQRT_3)
#define RLUM (0.3086)
#define GLUM (0.6094)
#define BLUM (0.0820)
static void printmat3(float mat[3][3])
{
int x, y;
char svalue[256];
int n = 0;
for (y = 0; y < 3; y++) {
for (x = 0; x < 3; x++)
n += sprintf(svalue + n, "%f ", mat[y][x]);
n += sprintf(svalue + n, "\n");
}
n += sprintf(svalue + n, "\n");
cocos2d::log("%s", svalue);
}
static void printmat4(float mat[4][4])
{
int x, y;
char svalue[256];
int n = 0;
for (y = 0; y < 4; y++) {
for (x = 0; x < 4; x++)
n += sprintf(svalue + n, "%f ", mat[y][x]);
n += sprintf(svalue + n, "\n");
}
n += sprintf(svalue + n, "\n");
cocos2d::log("%s", svalue);
}
inline void printmat3(float(&mat)[9])
{
printmat3((_M3X3&)mat);
}
inline void printmat4(float(&mat)[16])
{
printmat4((_M4X4&)mat);
}
inline void createRotationX(cocos2d::Mat4* dst, float sv, float cv)
{
dst->m[5] = cv;
dst->m[6] = sv;
dst->m[9] = -sv;
dst->m[10] = cv;
}
inline void createRotationY(cocos2d::Mat4* dst, float sv, float cv)
{
dst->m[0] = cv;
dst->m[2] = -sv;
dst->m[8] = sv;
dst->m[10] = cv;
}
inline void createRotationZ(cocos2d::Mat4* dst, float sv, float cv)
{
dst->m[0] = cv;
dst->m[1] = sv;
dst->m[4] = -sv;
dst->m[5] = cv;
}
inline void rotateX(cocos2d::Mat4* dst, float sv, float cv)
{
cocos2d::Mat4 temp;
createRotationX(&temp, sv, cv);
cocos2d::Mat4::multiply(temp, *dst, dst);
}
inline void rotateY(cocos2d::Mat4* dst, float sv, float cv)
{
cocos2d::Mat4 temp;
createRotationY(&temp, sv, cv);
cocos2d::Mat4::multiply(temp, *dst, dst); // dst->multiply(temp); pitfall: matrix1 * matrix2 != matrix2 * matrix1
}
inline void rotateZ(cocos2d::Mat4* dst, float sv, float cv)
{
cocos2d::Mat4 temp;
createRotationZ(&temp, sv, cv);
cocos2d::Mat4::multiply(temp, *dst, dst);
}
inline void rotateZ(cocos2d::Mat4* dst, float angle)
{
cocos2d::Mat4 temp;
cocos2d::Mat4::createRotationZ(angle, &temp);
cocos2d::Mat4::multiply(temp, *dst, dst);
}
/*
* matrixmult -
* multiply two matricies
*/
static void matrixmult(float a[4][4], float b[4][4], float c[4][4])
{
int x, y;
float temp[4][4];
for (y = 0; y < 4; y++)
for (x = 0; x < 4; x++) {
temp[y][x] = b[y][0] * a[0][x]
+ b[y][1] * a[1][x]
+ b[y][2] * a[2][x]
+ b[y][3] * a[3][x];
}
for (y = 0; y < 4; y++)
for (x = 0; x < 4; x++)
c[y][x] = temp[y][x];
}
/*
* identmat -
* make an identity matrix
*/
inline void identmat(float *matrix)
{
*matrix++ = 1.0; /* row 1 */
*matrix++ = 0.0;
*matrix++ = 0.0;
*matrix++ = 0.0;
*matrix++ = 0.0; /* row 2 */
*matrix++ = 1.0;
*matrix++ = 0.0;
*matrix++ = 0.0;
*matrix++ = 0.0; /* row 3 */
*matrix++ = 0.0;
*matrix++ = 1.0;
*matrix++ = 0.0;
*matrix++ = 0.0; /* row 4 */
*matrix++ = 0.0;
*matrix++ = 0.0;
*matrix++ = 1.0;
}
/*
* xformpnt -
* transform a 3D point using a matrix
*/
inline void xformpnt(float matrix[4][4], float x, float y, float z, float *tx, float *ty, float *tz)
{
*tx = x*matrix[0][0] + y*matrix[1][0] + z*matrix[2][0] + matrix[3][0];
*ty = x*matrix[0][1] + y*matrix[1][1] + z*matrix[2][1] + matrix[3][1];
*tz = x*matrix[0][2] + y*matrix[1][2] + z*matrix[2][2] + matrix[3][2];
}
/*
* cscalemat -
* make a color scale marix
*/
inline void cscalemat(float mat[4][4], float rscale, float gscale, float bscale)
{
float mmat[4][4];
mmat[0][0] = rscale;
mmat[0][1] = 0.0;
mmat[0][2] = 0.0;
mmat[0][3] = 0.0;
mmat[1][0] = 0.0;
mmat[1][1] = gscale;
mmat[1][2] = 0.0;
mmat[1][3] = 0.0;
mmat[2][0] = 0.0;
mmat[2][1] = 0.0;
mmat[2][2] = bscale;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* lummat -
* make a luminance marix
*/
inline void lummat(float mat[4][4])
{
float mmat[4][4];
float rwgt, gwgt, bwgt;
rwgt = RLUM;
gwgt = GLUM;
bwgt = BLUM;
mmat[0][0] = rwgt;
mmat[0][1] = rwgt;
mmat[0][2] = rwgt;
mmat[0][3] = 0.0;
mmat[1][0] = gwgt;
mmat[1][1] = gwgt;
mmat[1][2] = gwgt;
mmat[1][3] = 0.0;
mmat[2][0] = bwgt;
mmat[2][1] = bwgt;
mmat[2][2] = bwgt;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* saturatemat -
* make a saturation marix
*/
inline void saturatemat(float mat[4][4], float sat)
{
float mmat[4][4];
float a, b, c, d, e, f, g, h, i;
float rwgt, gwgt, bwgt;
rwgt = RLUM;
gwgt = GLUM;
bwgt = BLUM;
a = (1.0 - sat)*rwgt + sat;
b = (1.0 - sat)*rwgt;
c = (1.0 - sat)*rwgt;
d = (1.0 - sat)*gwgt;
e = (1.0 - sat)*gwgt + sat;
f = (1.0 - sat)*gwgt;
g = (1.0 - sat)*bwgt;
h = (1.0 - sat)*bwgt;
i = (1.0 - sat)*bwgt + sat;
mmat[0][0] = a;
mmat[0][1] = b;
mmat[0][2] = c;
mmat[0][3] = 0.0;
mmat[1][0] = d;
mmat[1][1] = e;
mmat[1][2] = f;
mmat[1][3] = 0.0;
mmat[2][0] = g;
mmat[2][1] = h;
mmat[2][2] = i;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* offsetmat -
* offset r, g, and b
*/
inline void offsetmat(float mat[4][4], float roffset, float goffset, float boffset)
{
float mmat[4][4];
mmat[0][0] = 1.0;
mmat[0][1] = 0.0;
mmat[0][2] = 0.0;
mmat[0][3] = 0.0;
mmat[1][0] = 0.0;
mmat[1][1] = 1.0;
mmat[1][2] = 0.0;
mmat[1][3] = 0.0;
mmat[2][0] = 0.0;
mmat[2][1] = 0.0;
mmat[2][2] = 1.0;
mmat[2][3] = 0.0;
mmat[3][0] = roffset;
mmat[3][1] = goffset;
mmat[3][2] = boffset;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* xrotate -
* rotate about the x (red) axis
*/
inline void xrotatemat(float mat[4][4], float rs, float rc)
{
float mmat[4][4];
mmat[0][0] = 1.0;
mmat[0][1] = 0.0;
mmat[0][2] = 0.0;
mmat[0][3] = 0.0;
mmat[1][0] = 0.0;
mmat[1][1] = rc;
mmat[1][2] = rs;
mmat[1][3] = 0.0;
mmat[2][0] = 0.0;
mmat[2][1] = -rs;
mmat[2][2] = rc;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* yrotate -
* rotate about the y (green) axis
*/
inline void yrotatemat(float mat[4][4], float rs, float rc)
{
float mmat[4][4];
mmat[0][0] = rc;
mmat[0][1] = 0.0;
mmat[0][2] = -rs;
mmat[0][3] = 0.0;
mmat[1][0] = 0.0;
mmat[1][1] = 1.0;
mmat[1][2] = 0.0;
mmat[1][3] = 0.0;
mmat[2][0] = rs;
mmat[2][1] = 0.0;
mmat[2][2] = rc;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* zrotate -
* rotate about the z (blue) axis
*/
inline void zrotatemat(float mat[4][4], float rs, float rc)
{
float mmat[4][4];
mmat[0][0] = rc;
mmat[0][1] = rs;
mmat[0][2] = 0.0;
mmat[0][3] = 0.0;
mmat[1][0] = -rs;
mmat[1][1] = rc;
mmat[1][2] = 0.0;
mmat[1][3] = 0.0;
mmat[2][0] = 0.0;
mmat[2][1] = 0.0;
mmat[2][2] = 1.0;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* zshear -
* shear z using x and y.
*/
inline void zshearmat(float mat[4][4], float dx, float dy)
{
float mmat[4][4];
mmat[0][0] = 1.0;
mmat[0][1] = 0.0;
mmat[0][2] = dx;
mmat[0][3] = 0.0;
mmat[1][0] = 0.0;
mmat[1][1] = 1.0;
mmat[1][2] = dy;
mmat[1][3] = 0.0;
mmat[2][0] = 0.0;
mmat[2][1] = 0.0;
mmat[2][2] = 1.0;
mmat[2][3] = 0.0;
mmat[3][0] = 0.0;
mmat[3][1] = 0.0;
mmat[3][2] = 0.0;
mmat[3][3] = 1.0;
matrixmult(mmat, mat, mat);
}
/*
* simplehuerotatemat -
* simple hue rotation. This changes luminance
*/
inline void simplehuerotatemat(float mat[4][4], float rot)
{
cocos2d::log("************* simplehuerotatemat");
float mag;
float xrs, xrc;
float yrs, yrc;
float zrs, zrc;
identmat((float*)mat);
/* rotate the grey vector into positive Z */
mag = sqrt(2.0);
xrs = 1.0 / mag;
xrc = 1.0 / mag;
xrotatemat(mat, xrs, xrc);
//printmat(mat);
mag = sqrt(3.0);
yrs = -1.0 / mag;
yrc = sqrt(2.0) / mag;
yrotatemat(mat, yrs, yrc);
//printmat(mat);
/* rotate the hue */
zrs = sin(rot);
zrc = cos(rot);
zrotatemat(mat, zrs, zrc);
//printmat(mat);
/* rotate the grey vector back into place */
yrotatemat(mat, -yrs, yrc);
// printmat(mat);
xrotatemat(mat, -xrs, xrc);
//printmat(mat);
cocos2d::log("############## simplehuerotatemat");
}
/*
* huerotatemat -
* rotate the hue, while maintaining luminance.
*/
inline void huerotatemat(float mat[4][4], float rot)
{
float mmat[4][4];
float mag;
float lx, ly, lz;
float xrs, xrc;
float yrs, yrc;
float zrs, zrc;
float zsx, zsy;
identmat((float*)mat);
identmat((float*)&mmat);
/* rotate the grey vector into positive Z */
mag = sqrt(2.0f);
xrs = 1.0f / mag;
xrc = 1.0f / mag;
xrotatemat(mmat, xrs, xrc);
mag = sqrt(3.0f);
yrs = -1.0 / mag;
yrc = sqrt(2.0f) / mag;
yrotatemat(mmat, yrs, yrc);
/* shear the space to make the luminance plane horizontal */
xformpnt(mmat, RLUM, GLUM, BLUM, &lx, &ly, &lz);
zsx = lx / lz;
zsy = ly / lz;
zshearmat(mmat, zsx, zsy);
/* rotate the hue */
zrs = sin(rot);
zrc = cos(rot);
zrotatemat(mmat, zrs, zrc);
/* unshear the space to put the luminance plane back */
zshearmat(mmat, -zsx, -zsy);
/* rotate the grey vector back into place */
yrotatemat(mmat, -yrs, yrc);
xrotatemat(mmat, -xrs, xrc);
matrixmult(mmat, mat, mat);
}
/*
* xformpnt -
* transform a 3D point using a matrix
*/
inline void xformpnt(Matrix3f* matrix, float x, float y, float z, float *tx, float *ty, float *tz)
{
*tx = x*matrix->m[0] + y*matrix->m[3] + z*matrix->m[6];
*ty = x*matrix->m[1] + y*matrix->m[4] + z*matrix->m[7];
*tz = x*matrix->m[2] + y*matrix->m[5] + z*matrix->m[8];
}
/*
* zshear -
* shear z using x and y.
*/
inline void zshearmat(Matrix3f* mat, float dx, float dy)
{
// float mmat[4][4];
Matrix3f mmat;
//mmat[0][0] = 1.0;
//mmat[0][1] = 0.0;
mmat.m[2] = dx;
//mmat[0][3] = 0.0;
//mmat[1][0] = 0.0;
//mmat[1][1] = 1.0;
mmat.m[5] = dy;
//mmat[1][3] = 0.0;
//mmat[2][0] = 0.0;
//mmat[2][1] = 0.0;
//mmat[2][2] = 1.0;
//mmat[2][3] = 0.0;
//mmat[3][0] = 0.0;
//mmat[3][1] = 0.0;
//mmat[3][2] = 0.0;
//mmat[3][3] = 1.0;
mat->mult(mmat);//matrixmult(mmat, mat, mat);
}
inline void createHueMatrix(cocos2d::Mat4* dst, float angle)
{
cocos2d::log("************* createHueMatrix4f");
memcpy(dst, &dst->IDENTITY, sizeof(*dst));
/* rotate the grey vector into positive Z */
createRotationX(dst, FLT_XRS, FLT_XRC);// rotateX(dst, FLT_XRS, FLT_XRC);
rotateY(dst, FLT_YRS, FLT_YRC);
/* rotate the hue */
rotateZ(dst, angle);
/* rotate the grey vector back into place */
rotateY(dst, -FLT_YRS, FLT_YRC);
rotateX(dst, -FLT_XRS, FLT_XRC);
cocos2d::log("############## createHueMatrix4f");
}
inline void setMatrixHueOptimized(Matrix3f* dst, float angle)
{
float lx, ly, lz;
float zsx, zsy;
// memcpy(dst, &dst->IDENTITY, sizeof(*dst));
/* rotate the grey vector into positive Z */
dst->createRotationX(FLT_XRS, FLT_XRC);// rotateX(dst, FLT_XRS, FLT_XRC);
dst->rotateY(FLT_YRS, FLT_YRC);
/* shear the space to make the luminance plane horizontal */
xformpnt(dst, RLUM, GLUM, BLUM, &lx, &ly, &lz);
zsx = lx / lz;
zsy = ly / lz;
zshearmat(dst, zsx, zsy);
/* rotate the hue */
dst->rotateZ(angle);
/* unshear the space to put the luminance plane back */
zshearmat(dst, -zsx, -zsy);
/* rotate the grey vector back into place */
dst->rotateY(-FLT_YRS, FLT_YRC);
dst->rotateX(-FLT_XRS, FLT_XRC);
}
/*
* Hue -
* HSV - H
*/
inline void setMatrixHue(Matrix3f* dst, float angle)
{
cocos2d::log("************* createHueMatrix3f");
// memcpy(dst, &dst->IDENTITY, sizeof(*dst));
/* rotate the grey vector into positive Z */
dst->createRotationX(FLT_XRS, FLT_XRC);// rotateX(dst, FLT_XRS, FLT_XRC);
dst->rotateY(FLT_YRS, FLT_YRC);
/* rotate the hue */
dst->rotateZ(angle);
/* rotate the grey vector back into place */
dst->rotateY(-FLT_YRS, FLT_YRC);
dst->rotateX(-FLT_XRS, FLT_XRC);
cocos2d::log("############## createHueMatrix3f");
}
/*
* saturatemat - 0~1, 0%~100% ?
* HSV - S
*/
inline void setMatrixSat(Matrix3f* dst, float sat)
{
Matrix3f temp;
float a, b, c, d, e, f, g, h, i;
float rwgt, gwgt, bwgt;
rwgt = RLUM;
gwgt = GLUM;
bwgt = BLUM;
a = (1.0 - sat)*rwgt + sat;
b = (1.0 - sat)*rwgt;
c = (1.0 - sat)*rwgt;
d = (1.0 - sat)*gwgt;
e = (1.0 - sat)*gwgt + sat;
f = (1.0 - sat)*gwgt;
g = (1.0 - sat)*bwgt;
h = (1.0 - sat)*bwgt;
i = (1.0 - sat)*bwgt + sat;
temp.m[0] = a;
temp.m[1] = b;
temp.m[2] = c;
// mmat[0][3] = 0.0;
temp.m[3] = d;
temp.m[4] = e;
temp.m[5] = f;
//mmat[1][3] = 0.0;
temp.m[6] = g;
temp.m[7] = h;
temp.m[8] = i;
// mmat[2][3] = 0.0;
//mmat[3][0] = 0.0;
//mmat[3][1] = 0.0;
//mmat[3][2] = 0.0;
//mmat[3][3] = 1.0;
// matrixmult(mmat, mat, mat);
dst->mult(temp);
}
/* Value
* HSV - V: 0~1, 0%, 100%
*/
inline void setMatrixVal(Matrix3f* dst, float value)
{
// float mmat[4][4];
Matrix3f temp;
temp.m[0] = value;
//temp.m[1] = 0.0;
//temp.m[2] = 0.0;
//mmat[0][3] = 0.0;
//mmat[1][0] = 0.0;
temp.m[4] = value;
// mmat[1][2] = 0.0;
//mmat[1][3] = 0.0;
//mmat[2][0] = 0.0;
//mmat[2][1] = 0.0;
temp.m[8] = value;
//mmat[2][3] = 0.0;
dst->mult(temp);
// matrixmult(mmat, mat, mat);
}
bool enableNodeIntelliShading(cocos2d::Node* node,
bool noMVP,
const cocos2d::Vec3& hsv,
const cocos2d::Vec3& filter = cocos2d::Vec3(1.0f, 0.45f, 0.3109),
bool forceShading = false,
const cocos2d::Vec3& hsvShading = cocos2d::Vec3::ZERO);
void updateNodeHsv(cocos2d::Node* node,
const cocos2d::Vec3& hsv,
const cocos2d::Vec3& filter = cocos2d::Vec3(1.0f, 0.45f, 0.3109),
bool forceShading = false,
const cocos2d::Vec3& hsvShading = cocos2d::Vec3::ZERO);
backend::Program* newHSVProgram();
};
#endif
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