三角関数(js,GLSL,HLSL)

code:triangle.js

Math.PI

Math.sin(x)

Math.cos(x)

Math.tan(x)

Math.asin(x) // y = sin(x), x = asin(y)

Math.acos(x) // y = cos(x), x = acos(y)

Math.atan(x)

Math.atan2(y, x)

Math.sinh(x)

Math.cosh(x)

Math.tanh(x)

Math.asinh(x)

Math.acosh(x)

Math.atanh(x)

code:triangle.GLSL

const float PI = 3.1415926;

sin(x)

cos(x)

tan(x)

asin(x)

acos(x)

atan(y, x) // -2PI to 2PI

atan(a) // a = y/x, -PI/2 to PI/2

sinh(x)

cosh(x)

tanh(x)

asinh(x)

acosh(x)

atanh(x)

code:triangle.HLSL

static float PI = 3.1415926;

sin(x)

cos(x)

tan(x)

asin(x)

acos(x)

atan(x)

atan2(y, x)

sinh(x)

cosh(x)

tanh(x)

// HLSLではasinh,acosh,atanh関数がない