math - 将 Matrix4x4 转换为 position ，Scale， Euler 三个vector3

Question

int main(int argc, const char * argv[]) {
    glm::mat4 t(1);
    glm::mat4 r(1);
    glm::mat4 s(1);

    t = glm::translate(t, glm::vec3(10.0f, 0.0f, 50.0f));
    r = glm::rotate(r, glm::radians(90.0f), glm::vec3(1.0f, 0.0f, 0.0f));
    s = glm::scale(s, glm::vec3(-3.0f, -5.0f, -10.0f));

    glm::mat4 trs = t * r * s;

    glm::vec3 restorePos;
    glm::vec3 restoreRot;
    glm::vec3 restoreSca;
    getPRS(trs, restorePos, restoreRot, restoreSca); 
}

将Matrix4x4转换为position，Scale，Euler三个vector3

void getPRS(const glm::mat4 &trs, glm::vec3 &pos, glm::vec3& rot, glm::vec3& sca) { 
    pos.x = transformation[3][0];
    pos.y = transformation[3][1];
    pos.z = transformation[3][2];
}

如何表达 rot 和 sca 以使功能正确？

标签： mathmatrixglm-math