COLOR PALETTE (JOV_GL)

Color palette creation using the formula: color(t) = a + b * cos[tau(c*t+d)]. See https://iquilezles.org/articles/palettes for more information.

By Amorano·Created 2 years ago·Updated 12 months ago· 20

bias
amp
freq
phase
iRes

RGBA
RGB
MASK

◄FRAGMENT// The MIT License // https://www.youtube.com/c/InigoQuilez // https://iquilezles.org/ // Copyright © 2015 Inigo Quilez // 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 above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 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. // See https://iquilezles.org/articles/palettes for more information // // name: COLOR PALETTE // desc: Color palette creation using the formula: color(t) = a + b * cos[tau(c*t+d)]. See https://iquilezles.org/articles/palettes for more information. // category: CREATE // control: res, #ifndef LIB_CONST #define LIB_CONST //------------------------------------------------------------------------------ // CONSTANT //------------------------------------------------------------------------------ #define M_EPSILON 1.0e-10 // zero value for float comparisons #define M_DEG2RAD 0.017453292519943 // Degree to radian conversion factor #define M_RAD2DEG 57.29577951308232 // Radian to degree conversion factor #define M_TAU 6.283185307179586 // TAU (2 * π) #define M_TAU_INV 0.159154943091895 // TAU Inverse (1 / TAU) #define M_PI 3.141592653589793 // π #define M_PI_INV 0.318309886183790 // π Inverse (1 / π) #define M_PI_2 1.570796326794896 // π divided by 2 (π / 2) #define M_PI_4 0.785398163397448 // π divided by 4 (π / 4) #define M_3PI_4 2.356194490192345 // 3 * π divided by 4 (3π / 4) #define M_PHI 1.618033988749895 // Golden ratio (φ) #define M_PHI_INV 0.618033988749895 // Inverse of golden ratio (1 / φ) #define M_PHI_SQ 2.618033988749895 // Square of the golden ratio (φ^2) #define M_PHI_SQRT5 0.723606797749979 // φ / √5 (useful for fibonacci spherical distribution) #define M_GOLD_ANG 2.399963229728653 // Golden angle in radians #define M_E 2.718281828459045 // Euler's number (base of natural logarithm) #define M_LOG2E 1.442695040888963 // Log base 2 of e #define M_LOG10E 0.434294481903252 // Log base 10 of e #define M_LN2 0.693147180559945 // Natural log of 2 #define M_LN10 2.302585092994046 // Natural log of 10 #define M_SQRT2 1.414213562373095 // Square root of 2 #define M_SQRT3 1.732050807568877 // Square root of 3 #define M_SQRT2_INV 0.707106781186547 // 1 divided by square root of 2 (1 / sqrt(2)) #define M_SQRT3_INV 0.577350269189626 // 1 divided by square root of 3 (1 / sqrt(3)) #define M_SQRT5 2.236067977499790 // Square root of 5 //------------------------------------------------------------------------------ // GENERAL //------------------------------------------------------------------------------ // useful for triangle interpolation vec3 barycentricCoords(vec2 p, vec2 a, vec2 b, vec2 c) { vec2 v0 = b - a; vec2 v1 = c - a; vec2 v2 = p - a; float d00 = dot(v0, v0); float d01 = dot(v0, v1); float d11 = dot(v1, v1); float d20 = dot(v2, v0); float d21 = dot(v2, v1); float denom = d00 * d11 - d01 * d01; vec3 result; result.y = (d11 * d20 - d01 * d21) / denom; result.z = (d00 * d21 - d01 * d20) / denom; result.x = 1.0 - result.y - result.z; return result; } #endif uniform vec3 bias; // 0.5,0.5,0.5;0 | scale and bias (dc offset) uniform vec3 amp; // 0.5,0.5,0.5 | contrast and brightness (amplitude) uniform vec3 freq; // 1,1,1 | color cycle (R, G and B) (frequency) uniform vec3 phase; // 0,0,0 | starting offset for the cycle void mainImage( out vec4 fragColor, in vec2 fragCoord ) { vec2 uv = fragCoord.xy / iResolution.xy; vec3 col = bias + amp * cos(M_PI * (freq * uv.x + phase)); fragColor = vec4(col, 1.0); }►

CategoryJOV_GL 🌈/CREATE

Inputs (6)

Name	Type	Default	Description
biasopt	VEC3	0.5,0.5,0.5	scale and bias (dc offset)
ampopt	VEC3	0.5,0.5,0.5	contrast and brightness (amplitude)
freqopt	VEC3	1,1,1	color cycle (R, G and B) (frequency)
phaseopt	VEC3	0,0,0	starting offset for the cycle
iResopt	VEC2INT	512,512	Width and Height as a Vector2 Integer (x, y)
FRAGMENTopt	STRING	// The MIT License // https://www.youtube.com/c/InigoQuilez // https://iquilezles.org/ // Copyright © 2015 Inigo Quilez // 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 above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 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. // See https://iquilezles.org/articles/palettes for more information // // name: COLOR PALETTE // desc: Color palette creation using the formula: color(t) = a + b * cos[tau(ct+d)]. See https://iquilezles.org/articles/palettes for more information. // category: CREATE // control: res, #ifndef LIB_CONST #define LIB_CONST //------------------------------------------------------------------------------ // CONSTANT //------------------------------------------------------------------------------ #define M_EPSILON 1.0e-10 // zero value for float comparisons #define M_DEG2RAD 0.017453292519943 // Degree to radian conversion factor #define M_RAD2DEG 57.29577951308232 // Radian to degree conversion factor #define M_TAU 6.283185307179586 // TAU (2 π) #define M_TAU_INV 0.159154943091895 // TAU Inverse (1 / TAU) #define M_PI 3.141592653589793 // π #define M_PI_INV 0.318309886183790 // π Inverse (1 / π) #define M_PI_2 1.570796326794896 // π divided by 2 (π / 2) #define M_PI_4 0.785398163397448 // π divided by 4 (π / 4) #define M_3PI_4 2.356194490192345 // 3 * π divided by 4 (3π / 4) #define M_PHI 1.618033988749895 // Golden ratio (φ) #define M_PHI_INV 0.618033988749895 // Inverse of golden ratio (1 / φ) #define M_PHI_SQ 2.618033988749895 // Square of the golden ratio (φ^2) #define M_PHI_SQRT5 0.723606797749979 // φ / √5 (useful for fibonacci spherical distribution) #define M_GOLD_ANG 2.399963229728653 // Golden angle in radians #define M_E 2.718281828459045 // Euler's number (base of natural logarithm) #define M_LOG2E 1.442695040888963 // Log base 2 of e #define M_LOG10E 0.434294481903252 // Log base 10 of e #define M_LN2 0.693147180559945 // Natural log of 2 #define M_LN10 2.302585092994046 // Natural log of 10 #define M_SQRT2 1.414213562373095 // Square root of 2 #define M_SQRT3 1.732050807568877 // Square root of 3 #define M_SQRT2_INV 0.707106781186547 // 1 divided by square root of 2 (1 / sqrt(2)) #define M_SQRT3_INV 0.577350269189626 // 1 divided by square root of 3 (1 / sqrt(3)) #define M_SQRT5 2.236067977499790 // Square root of 5 //------------------------------------------------------------------------------ // GENERAL //------------------------------------------------------------------------------ // useful for triangle interpolation vec3 barycentricCoords(vec2 p, vec2 a, vec2 b, vec2 c) { vec2 v0 = b - a; vec2 v1 = c - a; vec2 v2 = p - a; float d00 = dot(v0, v0); float d01 = dot(v0, v1); float d11 = dot(v1, v1); float d20 = dot(v2, v0); float d21 = dot(v2, v1); float denom = d00 * d11 - d01 * d01; vec3 result; result.y = (d11 * d20 - d01 * d21) / denom; result.z = (d00 * d21 - d01 * d20) / denom; result.x = 1.0 - result.y - result.z; return result; } #endif uniform vec3 bias; // 0.5,0.5,0.5;0 \| scale and bias (dc offset) uniform vec3 amp; // 0.5,0.5,0.5 \| contrast and brightness (amplitude) uniform vec3 freq; // 1,1,1 \| color cycle (R, G and B) (frequency) uniform vec3 phase; // 0,0,0 \| starting offset for the cycle void mainImage( out vec4 fragColor, in vec2 fragCoord ) { vec2 uv = fragCoord.xy / iResolution.xy; vec3 col = bias + amp * cos(M_PI * (freq * uv.x + phase)); fragColor = vec4(col, 1.0); }	—

Outputs (3)

Name	Type	Description
RGBA	IMAGE	Full channel [RGBA] image. If there is an alpha, the image will be masked out with it when using this output.
RGB	IMAGE	Three channel [RGB] image. There will be no alpha.
MASK	MASK	Single channel mask output.