glsl-y-rotate

A GLSL Module which generates a rotation matrix.

Recommend using glslify.

Usage

2D (mat2)

#pragma glslify: rotate = require(glsl-y-rotate)

const float DEG_TO_RAD = 3.141592653589793 / 180.0;

void main(void) {
    vec2 pos = vec2(1.0, 0.0);

    pos = rotate(45.0 * DEG_TO_RAD) * pos;
}

3D (mat3)

#pragma glslify: rotateX = require(glsl-y-rotate/rotateX)
#pragma glslify: rotateY = require(glsl-y-rotate/rotateY)
#pragma glslify: rotateZ = require(glsl-y-rotate/rotateZ)

const float DEG_TO_RAD = 3.141592653589793 / 180.0;

void main(void) {
    vec3 pos = vec3(0.0, 0.0, 1.0);

    pos = rotateZ(20.0 * DEG_TO_RAD) * pos;
    pos = rotateY(15.0 * DEG_TO_RAD) * pos;
    pos = rotateX(10.0 * DEG_TO_RAD) * pos;
}

Quaternion (mat3)

#pragma glslify: rotateQ = require(glsl-y-rotate/rotateQ)

const float DEG_TO_RAD = 3.141592653589793 / 180.0;

void main(void) {
    vec3 pos = vec3(0.0, 0.0, 1.0);

    vec3 axis = normalize(vec3(1.0, 1.0, 0.0));

    pos = rotateQ(axis, 20.0 * DEG_TO_RAD) * pos;
}