小编Ell*_*ion的帖子

首先 - 代码：

std::vector<glm::vec3> verticescopy;
    std::vector<glm::vec2> newUVs;

    /*Generating new UV Coordinates*/
    void keyfunction(GLFWwindow* window, int key, int scancode, int action, int mods) 
    {
        if (key == GLFW_KEY_R && action == GLFW_PRESS)
       {
        glm::vec3 coords2D;
        GLdouble point2DX, point2DY, point2DZ;

        GLdouble model_view[16];
        glGetDoublev(GL_MODELVIEW_MATRIX, model_view);

        GLdouble projection[16];
        glGetDoublev(GL_PROJECTION_MATRIX, projection);

        GLint viewport[4];
        glGetIntegerv(GL_VIEWPORT, viewport);   

        for (int i = 0; i < verticescopy.size(); i++)
        {
            gluProject((double)verticescopy[i].x, (double)verticescopy[i].y, (double)verticescopy[i].z,
                model_view, projection, viewport,
                &point2DX, &point2DY, &point2DZ);

            glm::vec2 UV;

            UV.x = point2DX / 600;
            UV.y = (point2DY - …