mat4

• using function Float64Array() { [native code] }

  • should make axis rotation matrix1ms ‣

    const axis = [0.5, 0.6, -0.7];
    const angle = 1.23;
    let x = axis[0];
    let y = axis[1];
    let z = axis[2];
    const n = Math.sqrt(x * x + y * y + z * z);
    x /= n;
    y /= n;
    z /= n;
    const xx = x * x;
    const yy = y * y;
    const zz = z * z;
    const c = Math.cos(angle);
    const s = Math.sin(angle);
    const oneMinusCosine = 1 - c;
    const expected = [
      xx + (1 - xx) * c,
      x * y * oneMinusCosine + z * s,
      x * z * oneMinusCosine - y * s,
      0,
      x * y * oneMinusCosine - z * s,
      yy + (1 - yy) * c,
      y * z * oneMinusCosine + x * s,
      0,
      x * z * oneMinusCosine + y * s,
      y * z * oneMinusCosine - x * s,
      zz + (1 - zz) * c,
      0,
      0, 0, 0, 1,
    ];
    testMat4WithAndWithoutDest((newDst) => {
      return mat4.axisRotation(axis, angle, newDst);
    }, expected);