Heyho ðŸ™‚

I’m trying to convert world coordinates to screen coordinates. I have available: fov, screen width, screen height, camera position, camera angle and obviously the position of the object in world space.

This is what I tried:

```
glm::vec3 world_to_screen(glm::vec3 pos,
glm::vec3 cam_angle,
glm::vec3 cam_pos) {
glm::mat4 projection = glm::perspective(
glm::radians(FOV), (float)SCREEN_W / (float)SCREEN_H, NEAR, FAR);
glm::mat4 model(1.0);
model = glm::translate(model, cam_pos);
model = glm::rotate(model, cam_angle.x, glm::vec3(1.0f, 0.0f, 0.0f));
model = glm::rotate(model, cam_angle.y, glm::vec3(0.0f, 1.0f, 0.0f));
model = glm::rotate(model, cam_angle.z, glm::vec3(0.0f, 0.0f, 1.0f));
glm::mat4 view = glm::inverse(model);
glm::mat4 modelview = view * model;
return glm::project(pos, modelview, projection,
glm::vec4(0, 0, SCREEN_W, SCREEN_H));
}
```

However it is not working, the output screen coords are over 30000 (I don’t have a 30k monitor…) and I’m not sure what I did wrong.

There is a correlation though, sometimes the screen coords happen to be in my screen (I draw an indicator at the position to see if I did it right) and if the object moves the indicator also moves with (kinda) the same speed etc.

Help is very much appreciated ðŸ™‚ Thanks a lot in advance!