How do I print vector values of type glm::vec3 that have been passed by reference?

Question

I have a small obj loader and it takes two parameters and passes them back to the input variables.. however this is my first time doing this and i'm not sure how to print said values now. Here is my main function to test if the loader is working. I have two vectors of type glm::vec3 to hold the vertex and normal data.

std::vector<glm::vec3> vertices; std::vector<glm::vec3> normals;      int main() {     bool test = loadOBJ("cube.obj", vertices, normals);     for (int i = 0; i < vertices.size(); i++) {        std::cout << vertices[i] << std::endl;   // problem line     }      return 0;    } 

The line commented above is what is generating useless info. If I leave it like that and run the program I get a bunch of errors spewed at me (too unformatted and long to paste here) and if I add the reference operator I get output like this:

0x711ea0 0x711eac 0x711eb8 0x711ec4    // etc 

Any idea what I am doing wrong?

Answer 1

glm has an extension for this. Add #include "glm/ext.hpp" or "glm/gtx/string_cast.hpp"

Then to print a vector for example:

glm::vec4 test; std::cout<<glm::to_string(test)<<std::endl;