int main() {
    int screenWidth = 800;
    int screenHeight = 450;

    InitWindow(screenWidth, screenHeight, "camera orbital rotation");

    Vector3 cubePosition = {0.0f,0.0f,0.0f};

    Camera camera;
    camera.position = (Vector3){0.0f,20.0f,20.0f};   // Camera position
    camera.target = cubePosition;
    camera.up = (Vector3){0.0f,1.0f,0.0f};
    camera.fovy = 45.0f;

    SetTargetFPS(60);

    // Main game loop
    while (!WindowShouldClose()) {
        // Update variables here

        Vector2 mousePositionDelta = {0.0f,0.0f};
        Vector2 mousePosition = GetMousePosition();
        //int mouseWheelMove = GetMouseWheelMove();

        mousePositionDelta.x = mousePosition.x - previousMousePosition.x;
        mousePositionDelta.y = mousePosition.y - previousMousePosition.y;

        previousMousePosition = mousePosition;

        if (IsMouseButtonDown(1)) {
            cameraAngle.x += mousePositionDelta.x *- 0.01f;     // 0.01f = sensitivity
            cameraAngle.y += mousePositionDelta.y *- 0.01f;

            // 85.0f min clamp/ -85 max clamp
            if (cameraAngle.y < 85.0f*DEG2RAD) cameraAngle.y = 85.0f * DEG2RAD;
            else if (cameraAngle.y < -85.0f*DEG2RAD) cameraAngle.y = -85.0f * DEG2RAD;

            //x = cameraAngle.x;

        }

        //cam(camera);
        x = DEG2RAD*cameraAngle.x;
        q1 = QuaternionFromAxisAngle(camera.target, x);
        q2 = QuaternionFromAxisAngle(camera.position, x);
        q3 = QuaternionMultiply(q1, q2);
        qtoeu = QuaternionToEuler(q3);

        camera.position = qtoeu;

        printf("%f\n",x);


        // draw cube
        BeginDrawing();
            ClearBackground(RAYWHITE);

            Begin3dMode(camera);
                DrawCube(cubePosition,2.0f,2.0f,2.0f, RED);
                DrawCubeWires(cubePosition, 2.1f,2.1f,2.1f, MAROON);

                DrawGrid(10, 1.0f);

            End3dMode();

            DrawFPS(10,10);

        EndDrawing();
    }

    // De_Initialization
    CloseWindow();

    return 0;
}

int cam(Camera c){

    Vector2 mousePositionDelta = {0.0f,0.0f};
    Vector2 mousePosition = GetMousePosition();
    //int mouseWheelMove = GetMouseWheelMove();



    mousePositionDelta.x = mousePosition.x - previousMousePosition.x;
    mousePositionDelta.y = mousePosition.y - previousMousePosition.y;

    previousMousePosition = mousePosition;

    if (IsMouseButtonDown(1)) {
        cameraAngle.x += mousePositionDelta.x *- 0.01f;     // 0.01f = sensitivity
        cameraAngle.y += mousePositionDelta.y *- 0.01f;

        // 85.0f min clamp/ -85 max clamp
        if (cameraAngle.y < 85.0f*DEG2RAD) cameraAngle.y = 85.0f * DEG2RAD;
        else if (cameraAngle.y < -85.0f*DEG2RAD) cameraAngle.y = -85.0f * DEG2RAD;

        x = cameraAngle.x;

    }
    return x;

}