Method lookAt

example/src/main/java/ExampleImGuizmo.java:300–334

(float[] eye, float[] at, float[] up, float[] m16)

    }

    private static void lookAt(float[] eye, float[] at, float[] up, float[] m16) {
        float[] x;
        float[] y;
        float[] z;
        float[] tmp = new float[3];

        tmp[0] = eye[0] - at[0];
        tmp[1] = eye[1] - at[1];
        tmp[2] = eye[2] - at[2];
        z = normalize(tmp);
        y = normalize(up);

        tmp = cross(y, z);
        x = normalize(tmp);

        tmp = cross(z, x);
        y = normalize(tmp);

        m16[0] = x[0];
        m16[1] = y[0];
        m16[2] = z[0];
        m16[3] = 0.0f;
        m16[4] = x[1];
        m16[5] = y[1];
        m16[6] = z[1];
        m16[7] = 0.0f;
        m16[8] = x[2];
        m16[9] = y[2];
        m16[10] = z[2];
        m16[11] = 0.0f;
        m16[12] = -dot(x, eye);
        m16[13] = -dot(y, eye);
        m16[14] = -dot(z, eye);
        m16[15] = 1.0f;
    }
}