dist/axis3d.js
/**
 * Rotates a matrix by the given angle around the X axis
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
Rotates a matrix by the given angle around the X axis
@param {mat4} out the receiving matrix
@param {mat4} a the matrix to rotate
@param {Number} rad the angle to rotate the matrix by
@returns {mat4} out
Rotates a matrix by the given angle around the X axis @param { mat4 } out the receiving matrix @param { mat4 } a the matrix to rotate @param { Number } rad the angle to rotate the matrix by @returns { mat4 } out
function rotateX(out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a10 = a[4],
        a11 = a[5],
        a12 = a[6],
        a13 = a[7],
        a20 = a[8],
        a21 = a[9],
        a22 = a[10],
        a23 = a[11];
    if (a !== out) {
        out[0] = a[0];
        out[1] = a[1];
        out[2] = a[2];
        out[3] = a[3];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }
    out[4] = a10 * c + a20 * s;
    out[5] = a11 * c + a21 * s;
    out[6] = a12 * c + a22 * s;
    out[7] = a13 * c + a23 * s;
    out[8] = a20 * c - a10 * s;
    out[9] = a21 * c - a11 * s;
    out[10] = a22 * c - a12 * s;
    out[11] = a23 * c - a13 * s;
    return out;
}
function rotateX ( out , a , rad ) { var s = Math . sin ( rad ) , c = Math . cos ( rad ) , a10 = a [ 4 ] , a11 = a [ 5 ] , a12 = a [ 6 ] , a13 = a [ 7 ] , a20 = a [ 8 ] , a21 = a [ 9 ] , a22 = a [ 10 ] , a23 = a [ 11 ] ; if ( a !== out ) { out [ 0 ] = a [ 0 ] ; out [ 1 ] = a [ 1 ] ; out [ 2 ] = a [ 2 ] ; out [ 3 ] = a [ 3 ] ; out [ 12 ] = a [ 12 ] ; out [ 13 ] = a [ 13 ] ; out [ 14 ] = a [ 14 ] ; out [ 15 ] = a [ 15 ] ; } out [ 4 ] = a10 * c + a20 * s ; out [ 5 ] = a11 * c + a21 * s ; out [ 6 ] = a12 * c + a22 * s ; out [ 7 ] = a13 * c + a23 * s ; out [ 8 ] = a20 * c - a10 * s ; out [ 9 ] = a21 * c - a11 * s ; out [ 10 ] = a22 * c - a12 * s ; out [ 11 ] = a23 * c - a13 * s ; return out ; }
Rotates a matrix by the given angle around the X axis
 @param {mat4} out the receiving matrix
 @param {mat4} a the matrix to rotate
 @param {Number} rad the angle to rotate the matrix by
 @returns {mat4} out
Rotates a matrix by the given angle around the X axis @param { mat4 } out the receiving matrix @param { mat4 } a the matrix to rotate @param { Number } rad the angle to rotate the matrix by @returns { mat4 } out
// If the source and destination differ, copy the unchanged rows // Perform axis-specific matrix multiplication