我正在嘗試將一組采樣的矢量旋轉(zhuǎn)到三角形的法線如果正確，則隨機(jī)采樣的半球?qū)⑴c三角形對齊。目前，我在Z軸上生成它，并嘗試將所有樣本旋轉(zhuǎn)到三角形的法線。但似乎“剛好”glm::quat getQuat(glm::vec3 v1, glm::vec3 v2){    glm::quat myQuat;    float dot = glm::dot(v1, v2);    if (dot != 1)    {        glm::vec3 aa = glm::normalize(glm::cross(v1, v2));        float w = sqrt(glm::length(v1)*glm::length(v1) * glm::length(v2)*glm::length(v2)) + dot;        myQuat.x = aa.x;        myQuat.y = aa.y;        myQuat.z = aa.z;        myQuat.w = w;    }    return myQuat;}我是從此頁面底部提取的：http : //lolengine.net/blog/2013/09/18/beautiful-maths-quaternion-from-vectors然后我 ：glm::vec3 zaxis = glm::normalize( glm::vec3(0, 0, 1) );  // hardcoded but test orginal axisglm::vec3 n1 = glm::normalize( glm::cross((p2 - p1), (p3 - p1)) ); //normalglm::quat myQuat = glm::normalize(getQuat(zaxis, n1));glm::mat4 rotmat = glm::toMat4(myQuat); //make a rotation matrixglm::vec4 n3 = rotmat * glm::vec4(n2,1); // current vector I am trying to rotate