paysages : Noise adjustements.
git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@428 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
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3 changed files with 39 additions and 11 deletions
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@ -31,6 +31,26 @@ void noiseInit()
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noiseSimplexInit();
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noiseSimplexInit();
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noisePerlinInit();
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noisePerlinInit();
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noiseNaiveInit();
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noiseNaiveInit();
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/* Noise stats */
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/*NoiseGenerator* noise;
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int x;
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double min, max, value;
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noise = noiseCreateGenerator();
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noiseSetFunctionParams(noise, NOISE_FUNCTION_NAIVE, 0.0);
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noiseAddLevelSimple(noise, 1.0, 1.0);
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min = 100000.0;
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max = -100000.0;
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for (x = 0; x < 1000000; x++)
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{
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value = noiseGet1DTotal(noise, toolsRandom() * 10000.0);
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value = noiseGet2DTotal(noise, toolsRandom() * 10000.0, toolsRandom() * 10000.0);
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value = noiseGet3DTotal(noise, toolsRandom() * 10000.0, toolsRandom() * 10000.0, toolsRandom() * 10000.0);
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if (value < min) min = value;
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if (value > max) max = value;
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}
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printf("%f %f\n", min, max);
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noiseDeleteGenerator(noise);*/
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}
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}
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void noiseQuit()
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void noiseQuit()
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@ -55,8 +55,9 @@ void noiseNaiveLoad(PackStream* stream)
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double noiseNaiveGet1DValue(double x)
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double noiseNaiveGet1DValue(double x)
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{
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{
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x *= 3.0;
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int size = _noise_pool_size;
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int size = _noise_pool_size;
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int xbase = (int)floor(x);
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int xbase = (int)floor(x);
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double xinternal = x - (double)xbase;
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double xinternal = x - (double)xbase;
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@ -88,12 +89,15 @@ double noiseNaiveGet1DValue(double x)
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buf_cubic_x[1] = _noise_pool[x1 % _noise_pool_size];
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buf_cubic_x[1] = _noise_pool[x1 % _noise_pool_size];
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buf_cubic_x[2] = _noise_pool[x2 % _noise_pool_size];
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buf_cubic_x[2] = _noise_pool[x2 % _noise_pool_size];
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buf_cubic_x[3] = _noise_pool[x3 % _noise_pool_size];
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buf_cubic_x[3] = _noise_pool[x3 % _noise_pool_size];
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return toolsCubicInterpolate(buf_cubic_x, xinternal);
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return toolsCubicInterpolate(buf_cubic_x, xinternal) * 0.837;
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}
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}
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double noiseNaiveGet2DValue(double x, double y)
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double noiseNaiveGet2DValue(double x, double y)
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{
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{
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x *= 3.0;
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y *= 3.0;
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int size = (int)pow(_noise_pool_size, 0.5);
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int size = (int)pow(_noise_pool_size, 0.5);
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int xbase = (int)floor(x);
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int xbase = (int)floor(x);
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@ -171,11 +175,15 @@ double noiseNaiveGet2DValue(double x, double y)
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buf_cubic_x[3] = _noise_pool[(y3 * size + x3) % _noise_pool_size];
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buf_cubic_x[3] = _noise_pool[(y3 * size + x3) % _noise_pool_size];
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buf_cubic_y[3] = toolsCubicInterpolate(buf_cubic_x, xinternal);
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buf_cubic_y[3] = toolsCubicInterpolate(buf_cubic_x, xinternal);
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return toolsCubicInterpolate(buf_cubic_y, yinternal);
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return toolsCubicInterpolate(buf_cubic_y, yinternal) * 0.723;
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}
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}
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double noiseNaiveGet3DValue(double x, double y, double z)
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double noiseNaiveGet3DValue(double x, double y, double z)
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{
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{
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x *= 3.0;
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y *= 3.0;
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z *= 3.0;
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int size = (int)pow(_noise_pool_size, 0.33333333333333333);
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int size = (int)pow(_noise_pool_size, 0.33333333333333333);
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int xbase = (int)floor(x);
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int xbase = (int)floor(x);
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@ -357,7 +365,7 @@ double noiseNaiveGet3DValue(double x, double y, double z)
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buf_cubic_z[3] = toolsCubicInterpolate(buf_cubic_y, yinternal);
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buf_cubic_z[3] = toolsCubicInterpolate(buf_cubic_y, yinternal);
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return toolsCubicInterpolate(buf_cubic_z, zinternal);
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return toolsCubicInterpolate(buf_cubic_z, zinternal) * 0.794;
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}
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}
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/*double noiseNaiveGet4DValue(double x, double y, double z, double w)
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/*double noiseNaiveGet4DValue(double x, double y, double z, double w)
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@ -39,7 +39,7 @@ static double g1[B + B + 2];
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double noisePerlinGet1DValue(double x)
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double noisePerlinGet1DValue(double x)
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{
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{
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double vec[1] = {x};
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double vec[1] = {x*2.0};
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int bx0, bx1;
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int bx0, bx1;
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double rx0, rx1, sx, t, u, v;
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double rx0, rx1, sx, t, u, v;
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@ -50,12 +50,12 @@ double noisePerlinGet1DValue(double x)
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u = rx0 * g1[ p[ bx0 ] ];
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u = rx0 * g1[ p[ bx0 ] ];
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v = rx1 * g1[ p[ bx1 ] ];
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v = rx1 * g1[ p[ bx1 ] ];
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return lerp(sx, u, v);
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return lerp(sx, u, v) * 1.068;
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}
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}
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double noisePerlinGet2DValue(double x, double y)
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double noisePerlinGet2DValue(double x, double y)
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{
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{
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double vec[2] = {x, y};
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double vec[2] = {x*2.0, y*2.0};
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int bx0, bx1, by0, by1, b00, b10, b01, b11;
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int bx0, bx1, by0, by1, b00, b10, b01, b11;
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double rx0, rx1, ry0, ry1, *q, sx, sy, a, b, t, u, v;
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double rx0, rx1, ry0, ry1, *q, sx, sy, a, b, t, u, v;
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int i, j;
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int i, j;
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@ -84,12 +84,12 @@ double noisePerlinGet2DValue(double x, double y)
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q = g2[ b11 ] ; v = at2(rx1,ry1);
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q = g2[ b11 ] ; v = at2(rx1,ry1);
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b = lerp(sx, u, v);
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b = lerp(sx, u, v);
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return lerp(sy, a, b);
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return lerp(sy, a, b) * 0.709;
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}
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}
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double noisePerlinGet3DValue(double x, double y, double z)
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double noisePerlinGet3DValue(double x, double y, double z)
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{
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{
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double vec[3] = {x, y, z};
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double vec[3] = {x*2.0, y*2.0, z*2.0};
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int bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11;
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int bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11;
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double rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v;
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double rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v;
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int i, j;
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int i, j;
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@ -132,7 +132,7 @@ double noisePerlinGet3DValue(double x, double y, double z)
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d = lerp(sy, a, b);
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d = lerp(sy, a, b);
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return lerp(sz, c, d);
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return lerp(sz, c, d) * 0.661;
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}
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}
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static void _normalize2(double v[2])
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static void _normalize2(double v[2])
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