From: Frederic Bouvier Date: Sun, 5 Feb 2012 22:25:02 +0000 (+0100) Subject: Move Noise from scene/material to scene/util X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=9b130f099fe34f69e742f6067502f90164a7f22d;p=simgear.git Move Noise from scene/material to scene/util --- diff --git a/simgear/scene/material/CMakeLists.txt b/simgear/scene/material/CMakeLists.txt index 3527a142..ccd0b279 100644 --- a/simgear/scene/material/CMakeLists.txt +++ b/simgear/scene/material/CMakeLists.txt @@ -4,7 +4,6 @@ set(HEADERS EffectCullVisitor.hxx EffectGeode.hxx GLPredicate.hxx - Noise.hxx Pass.hxx Technique.hxx TextureBuilder.hxx @@ -20,7 +19,6 @@ set(SOURCES EffectCullVisitor.cxx EffectGeode.cxx GLPredicate.cxx - Noise.cxx Pass.cxx Technique.cxx TextureBuilder.cxx diff --git a/simgear/scene/material/Noise.cxx b/simgear/scene/material/Noise.cxx deleted file mode 100644 index 23ecd790..00000000 --- a/simgear/scene/material/Noise.cxx +++ /dev/null @@ -1,287 +0,0 @@ -/* OpenSceneGraph example, osgshaders. -* -* Permission is hereby granted, free of charge, to any person obtaining a copy -* of this software and associated documentation files (the "Software"), to deal -* in the Software without restriction, including without limitation the rights -* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -* copies of the Software, and to permit persons to whom the Software is -* furnished to do so, subject to the following conditions: -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -* THE SOFTWARE. -*/ - -/************************************************************************ - * * - * Copyright (C) 2002 3Dlabs Inc. Ltd. * - * * - ************************************************************************/ - -#include -#include - -/* Coherent noise function over 1, 2 or 3 dimensions */ -/* (copyright Ken Perlin) */ - -#define MAXB 0x100 -#define N 0x1000 -#define NP 12 /* 2^N */ -#define NM 0xfff - -#define s_curve(t) ( t * t * (3. - 2. * t) ) -#define lerp(t, a, b) ( a + t * (b - a) ) -#define setup(i,b0,b1,r0,r1)\ - t = vec[i] + N;\ - b0 = ((int)t) & BM;\ - b1 = (b0+1) & BM;\ - r0 = t - (int)t;\ - r1 = r0 - 1.; -#define at2(rx,ry) ( rx * q[0] + ry * q[1] ) -#define at3(rx,ry,rz) ( rx * q[0] + ry * q[1] + rz * q[2] ) - -static void initNoise(void); - -static int p[MAXB + MAXB + 2]; -static double g3[MAXB + MAXB + 2][3]; -static double g2[MAXB + MAXB + 2][2]; -static double g1[MAXB + MAXB + 2]; - -int start; -int B; -int BM; - - -void SetNoiseFrequency(int frequency) -{ - start = 1; - B = frequency; - BM = B-1; -} - -double noise1(double arg) -{ - int bx0, bx1; - double rx0, rx1, sx, t, u, v, vec[1]; - - vec[0] = arg; - if (start) { - start = 0; - initNoise(); - } - - setup(0,bx0,bx1,rx0,rx1); - - sx = s_curve(rx0); - u = rx0 * g1[ p[ bx0 ] ]; - v = rx1 * g1[ p[ bx1 ] ]; - - return(lerp(sx, u, v)); -} - -double noise2(double vec[2]) -{ - int bx0, bx1, by0, by1, b00, b10, b01, b11; - double rx0, rx1, ry0, ry1, *q, sx, sy, a, b, t, u, v; - int i, j; - - if (start) { - start = 0; - initNoise(); - } - - setup(0, bx0,bx1, rx0,rx1); - setup(1, by0,by1, ry0,ry1); - - i = p[ bx0 ]; - j = p[ bx1 ]; - - b00 = p[ i + by0 ]; - b10 = p[ j + by0 ]; - b01 = p[ i + by1 ]; - b11 = p[ j + by1 ]; - - sx = s_curve(rx0); - sy = s_curve(ry0); - - q = g2[ b00 ] ; u = at2(rx0,ry0); - q = g2[ b10 ] ; v = at2(rx1,ry0); - a = lerp(sx, u, v); - - q = g2[ b01 ] ; u = at2(rx0,ry1); - q = g2[ b11 ] ; v = at2(rx1,ry1); - b = lerp(sx, u, v); - - return lerp(sy, a, b); -} - -double noise3(double vec[3]) -{ - int bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11; - double rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v; - int i, j; - - if (start) { - start = 0; - initNoise(); - } - - setup(0, bx0,bx1, rx0,rx1); - setup(1, by0,by1, ry0,ry1); - setup(2, bz0,bz1, rz0,rz1); - - i = p[ bx0 ]; - j = p[ bx1 ]; - - b00 = p[ i + by0 ]; - b10 = p[ j + by0 ]; - b01 = p[ i + by1 ]; - b11 = p[ j + by1 ]; - - t = s_curve(rx0); - sy = s_curve(ry0); - sz = s_curve(rz0); - - q = g3[ b00 + bz0 ] ; u = at3(rx0,ry0,rz0); - q = g3[ b10 + bz0 ] ; v = at3(rx1,ry0,rz0); - a = lerp(t, u, v); - - q = g3[ b01 + bz0 ] ; u = at3(rx0,ry1,rz0); - q = g3[ b11 + bz0 ] ; v = at3(rx1,ry1,rz0); - b = lerp(t, u, v); - - c = lerp(sy, a, b); - - q = g3[ b00 + bz1 ] ; u = at3(rx0,ry0,rz1); - q = g3[ b10 + bz1 ] ; v = at3(rx1,ry0,rz1); - a = lerp(t, u, v); - - q = g3[ b01 + bz1 ] ; u = at3(rx0,ry1,rz1); - q = g3[ b11 + bz1 ] ; v = at3(rx1,ry1,rz1); - b = lerp(t, u, v); - - d = lerp(sy, a, b); - - //fprintf(stderr, "%f\n", lerp(sz, c, d)); - - return lerp(sz, c, d); -} - -void normalize2(double v[2]) -{ - double s; - - s = sqrt(v[0] * v[0] + v[1] * v[1]); - v[0] = v[0] / s; - v[1] = v[1] / s; -} - -void normalize3(double v[3]) -{ - double s; - - s = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]); - v[0] = v[0] / s; - v[1] = v[1] / s; - v[2] = v[2] / s; -} - -void initNoise(void) -{ - int i, j, k; - - srand(30757); - for (i = 0 ; i < B ; i++) { - p[i] = i; - g1[i] = (double)((rand() % (B + B)) - B) / B; - - for (j = 0 ; j < 2 ; j++) - g2[i][j] = (double)((rand() % (B + B)) - B) / B; - normalize2(g2[i]); - - for (j = 0 ; j < 3 ; j++) - g3[i][j] = (double)((rand() % (B + B)) - B) / B; - normalize3(g3[i]); - } - - while (--i) { - k = p[i]; - p[i] = p[j = rand() % B]; - p[j] = k; - } - - for (i = 0 ; i < B + 2 ; i++) { - p[B + i] = p[i]; - g1[B + i] = g1[i]; - for (j = 0 ; j < 2 ; j++) - g2[B + i][j] = g2[i][j]; - for (j = 0 ; j < 3 ; j++) - g3[B + i][j] = g3[i][j]; - } -} - -/* --- My harmonic summing functions - PDB --------------------------*/ - -/* - In what follows "alpha" is the weight when the sum is formed. - Typically it is 2, As this approaches 1 the function is noisier. - "beta" is the harmonic scaling/spacing, typically 2. -*/ - -double PerlinNoise1D(double x,double alpha,double beta,int n) -{ - int i; - double val,sum = 0; - double p,scale = 1; - - p = x; - for (i=0;i +#include + +/* Coherent noise function over 1, 2 or 3 dimensions */ +/* (copyright Ken Perlin) */ + +#define MAXB 0x100 +#define N 0x1000 +#define NP 12 /* 2^N */ +#define NM 0xfff + +#define s_curve(t) ( t * t * (3. - 2. * t) ) +#define lerp(t, a, b) ( a + t * (b - a) ) +#define setup(i,b0,b1,r0,r1)\ + t = vec[i] + N;\ + b0 = ((int)t) & BM;\ + b1 = (b0+1) & BM;\ + r0 = t - (int)t;\ + r1 = r0 - 1.; +#define at2(rx,ry) ( rx * q[0] + ry * q[1] ) +#define at3(rx,ry,rz) ( rx * q[0] + ry * q[1] + rz * q[2] ) + +static void initNoise(void); + +static int p[MAXB + MAXB + 2]; +static double g3[MAXB + MAXB + 2][3]; +static double g2[MAXB + MAXB + 2][2]; +static double g1[MAXB + MAXB + 2]; + +int start; +int B; +int BM; + + +void SetNoiseFrequency(int frequency) +{ + start = 1; + B = frequency; + BM = B-1; +} + +double noise1(double arg) +{ + int bx0, bx1; + double rx0, rx1, sx, t, u, v, vec[1]; + + vec[0] = arg; + if (start) { + start = 0; + initNoise(); + } + + setup(0,bx0,bx1,rx0,rx1); + + sx = s_curve(rx0); + u = rx0 * g1[ p[ bx0 ] ]; + v = rx1 * g1[ p[ bx1 ] ]; + + return(lerp(sx, u, v)); +} + +double noise2(double vec[2]) +{ + int bx0, bx1, by0, by1, b00, b10, b01, b11; + double rx0, rx1, ry0, ry1, *q, sx, sy, a, b, t, u, v; + int i, j; + + if (start) { + start = 0; + initNoise(); + } + + setup(0, bx0,bx1, rx0,rx1); + setup(1, by0,by1, ry0,ry1); + + i = p[ bx0 ]; + j = p[ bx1 ]; + + b00 = p[ i + by0 ]; + b10 = p[ j + by0 ]; + b01 = p[ i + by1 ]; + b11 = p[ j + by1 ]; + + sx = s_curve(rx0); + sy = s_curve(ry0); + + q = g2[ b00 ] ; u = at2(rx0,ry0); + q = g2[ b10 ] ; v = at2(rx1,ry0); + a = lerp(sx, u, v); + + q = g2[ b01 ] ; u = at2(rx0,ry1); + q = g2[ b11 ] ; v = at2(rx1,ry1); + b = lerp(sx, u, v); + + return lerp(sy, a, b); +} + +double noise3(double vec[3]) +{ + int bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11; + double rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v; + int i, j; + + if (start) { + start = 0; + initNoise(); + } + + setup(0, bx0,bx1, rx0,rx1); + setup(1, by0,by1, ry0,ry1); + setup(2, bz0,bz1, rz0,rz1); + + i = p[ bx0 ]; + j = p[ bx1 ]; + + b00 = p[ i + by0 ]; + b10 = p[ j + by0 ]; + b01 = p[ i + by1 ]; + b11 = p[ j + by1 ]; + + t = s_curve(rx0); + sy = s_curve(ry0); + sz = s_curve(rz0); + + q = g3[ b00 + bz0 ] ; u = at3(rx0,ry0,rz0); + q = g3[ b10 + bz0 ] ; v = at3(rx1,ry0,rz0); + a = lerp(t, u, v); + + q = g3[ b01 + bz0 ] ; u = at3(rx0,ry1,rz0); + q = g3[ b11 + bz0 ] ; v = at3(rx1,ry1,rz0); + b = lerp(t, u, v); + + c = lerp(sy, a, b); + + q = g3[ b00 + bz1 ] ; u = at3(rx0,ry0,rz1); + q = g3[ b10 + bz1 ] ; v = at3(rx1,ry0,rz1); + a = lerp(t, u, v); + + q = g3[ b01 + bz1 ] ; u = at3(rx0,ry1,rz1); + q = g3[ b11 + bz1 ] ; v = at3(rx1,ry1,rz1); + b = lerp(t, u, v); + + d = lerp(sy, a, b); + + //fprintf(stderr, "%f\n", lerp(sz, c, d)); + + return lerp(sz, c, d); +} + +void normalize2(double v[2]) +{ + double s; + + s = sqrt(v[0] * v[0] + v[1] * v[1]); + v[0] = v[0] / s; + v[1] = v[1] / s; +} + +void normalize3(double v[3]) +{ + double s; + + s = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]); + v[0] = v[0] / s; + v[1] = v[1] / s; + v[2] = v[2] / s; +} + +void initNoise(void) +{ + int i, j, k; + + srand(30757); + for (i = 0 ; i < B ; i++) { + p[i] = i; + g1[i] = (double)((rand() % (B + B)) - B) / B; + + for (j = 0 ; j < 2 ; j++) + g2[i][j] = (double)((rand() % (B + B)) - B) / B; + normalize2(g2[i]); + + for (j = 0 ; j < 3 ; j++) + g3[i][j] = (double)((rand() % (B + B)) - B) / B; + normalize3(g3[i]); + } + + while (--i) { + k = p[i]; + p[i] = p[j = rand() % B]; + p[j] = k; + } + + for (i = 0 ; i < B + 2 ; i++) { + p[B + i] = p[i]; + g1[B + i] = g1[i]; + for (j = 0 ; j < 2 ; j++) + g2[B + i][j] = g2[i][j]; + for (j = 0 ; j < 3 ; j++) + g3[B + i][j] = g3[i][j]; + } +} + +/* --- My harmonic summing functions - PDB --------------------------*/ + +/* + In what follows "alpha" is the weight when the sum is formed. + Typically it is 2, As this approaches 1 the function is noisier. + "beta" is the harmonic scaling/spacing, typically 2. +*/ + +double PerlinNoise1D(double x,double alpha,double beta,int n) +{ + int i; + double val,sum = 0; + double p,scale = 1; + + p = x; + for (i=0;i -#include +#include "Noise.hxx" using namespace osg;