LYGIA Shader Library

const (lygia/math/const)

some useful math constants

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#ifndef QTR_PI
#define QTR_PI 0.78539816339
#endif
#ifndef HALF_PI
#define HALF_PI 1.5707963267948966192313216916398
#endif
#ifndef PI
#define PI 3.1415926535897932384626433832795
#endif
#ifndef TWO_PI
#define TWO_PI 6.2831853071795864769252867665590
#endif
#ifndef TAU
#define TAU 6.2831853071795864769252867665590
#endif
#ifndef INV_PI
#define INV_PI 0.31830988618379067153776752674503
#endif
#ifndef INV_SQRT_TAU
#define INV_SQRT_TAU 0.39894228040143267793994605993439  // 1.0/SQRT_TAU
#endif
#ifndef SQRT_HALF_PI
#define SQRT_HALF_PI 1.25331413732
#endif
#ifndef PHI
#define PHI 1.618033988749894848204586834
#endif
#ifndef EPSILON
#define EPSILON 0.0000001
#endif
#ifndef GOLDEN_RATIO
#define GOLDEN_RATIO 1.6180339887
#endif
#ifndef GOLDEN_RATIO_CONJUGATE 
#define GOLDEN_RATIO_CONJUGATE 0.61803398875
#endif
#ifndef GOLDEN_ANGLE // (3.-sqrt(5.0))*PI radians
#define GOLDEN_ANGLE 2.39996323
#endif

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#ifndef QTR_PI
#define QTR_PI 0.78539816339
#endif
#ifndef HALF_PI
#define HALF_PI 1.5707963267948966192313216916398
#endif
#ifndef PI
#define PI 3.1415926535897932384626433832795
#endif
#ifndef TWO_PI
#define TWO_PI 6.2831853071795864769252867665590
#endif
#ifndef TAU
#define TAU 6.2831853071795864769252867665590
#endif
#ifndef INV_PI
#define INV_PI 0.31830988618379067153776752674503
#endif
#ifndef INV_SQRT_TAU
#define INV_SQRT_TAU 0.39894228040143267793994605993439  // 1.0/SQRT_TAU
#endif
#ifndef PHI
#define PHI 1.618033988749894848204586834
#endif
#ifndef EPSILON
#define EPSILON 0.0000001
#endif
#ifndef GOLDEN_RATIO
#define GOLDEN_RATIO 1.6180339887
#endif
#ifndef GOLDEN_RATIO_CONJUGATE 
#define GOLDEN_RATIO_CONJUGATE 0.61803398875
#endif
#ifndef GOLDEN_ANGLE // (3.-sqrt(5.0))*PI radians
#define GOLDEN_ANGLE 2.39996323
#endif

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const QTR_PI: f32 = 0.78539816339;
const HALF_PI: f32 = 1.5707963267948966192313216916398;
const PI: f32 = 3.1415926535897932384626433832795;
const TWO_PI: f32 = 6.2831853071795864769252867665590;
const TAU: f32 = 6.2831853071795864769252867665590;
const INV_PI: f32 = 0.31830988618379067153776752674503;
const INV_SQRT_TAU = 0.39894228040143267793994605993439;
const SQRT_HALF_PI: f32 = 1.25331413732;
const PHI: f32 = 1.618033988749894848204586834;
const EPSILON: f32 = 0.0000001;
const GOLDEN_RATIO: f32 = 1.6180339887;
const GOLDEN_RATIO_CONJUGATE: f32 = 0.61803398875;
const GOLDEN_ANGLE: f32 = 2.39996323;

Check it on Github

#ifndef QTR_PI
#define QTR_PI 0.78539816339
#endif
#ifndef HALF_PI
#define HALF_PI 1.5707963267948966192313216916398
#endif
#ifndef PI
#define PI 3.1415926535897932384626433832795
#endif
#ifndef TWO_PI
#define TWO_PI 6.2831853071795864769252867665590
#endif
#ifndef TAU
#define TAU 6.2831853071795864769252867665590
#endif
#ifndef INV_PI
#define INV_PI 0.31830988618379067153776752674503
#endif
#ifndef INV_SQRT_TAU
#define INV_SQRT_TAU 0.39894228040143267793994605993439  // 1.0/SQRT_TAU
#endif
#ifndef PHI
#define PHI 1.618033988749894848204586834
#endif
#ifndef EPSILON
#define EPSILON 0.0000001
#endif
#ifndef GOLDEN_RATIO
#define GOLDEN_RATIO 1.6180339887
#endif
#ifndef GOLDEN_RATIO_CONJUGATE 
#define GOLDEN_RATIO_CONJUGATE 0.61803398875
#endif
#ifndef GOLDEN_ANGLE // (3.-sqrt(5.0))*PI radians
#define GOLDEN_ANGLE 2.39996323
#endif
#ifndef MAX_FLOAT_VALUE
#define MAX_FLOAT_VALUE 3.402823E+38
#endif

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LYGIA is dual-licensed under the Prosperity License and the Patron License for sponsors and contributors.

Sponsors and contributors are automatically added to the Patron License and they can ignore the any non-commercial rule of the Prosperity Licensed software (please take a look to the exception).

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