Guide to Game Development/Rendering and Game Engines/OpenGL/GLUT/Basic 3D window creation

Here's the C++ code for creating a basic perspective window for a 3D environmentSmall parts of code were altered and changed from this playlist: https://www.youtube.com/playlist?list=PL2E88A9FE78FBF3B8: #include <iostream> #include <glut.h> using namespace std; void Init() { glClearColor(0.2, 0.0, 0.0, 0.0); //Write your openGL set-up commands } void Display() { //OpenGL functions to draw a basic triangle glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glBegin(GL_TRIANGLES); glColor3f(1.0,0.0,0.0); glVertex3f(-1.0, -1.0, -3.0); glColor3f(0.0,1.0,0.0); glVertex3f(0.0, 1.0, -3.0); glColor3f(0.0,0.0,1.0); glVertex3f(1.0, -1.0, -3.0); glEnd(); // glutSwapBuffers(); //Swaps the double-buffer } void Reshape(int w, int h){ //This fixes resize problems if (h == 0){ h = 1; } float ratio = (float)w/h; glMatrixMode(GL_PROJECTION); glLoadIdentity(); glViewport(0,0,w,h); gluPerspective(45, //FOV ratio, //Aspect Ratio 0.01, //Closest thing you can see 1000); //Furthest thing you can see glMatrixMode(GL_MODELVIEW); } int main(int Argc, char** Argv) { glutInit(&Argc, Argv); //Allows glut to initiate with the parameters of main glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH); //Double buffering, RGBA colour space, Depth buffer (displays things in the correct order, things don't overlap in the wrong order) glutInitWindowSize(250, 250); //Sets the size of the window glutInitWindowPosition(200, 200); //Positions the window where 0,0 is the top left corner of your screen glutCreateWindow("GLUT Window"); //Create the window with the name provided Init(); //Other setups you need glutReshapeFunc(Reshape); //Sets the function that wants to be called when the form is resized glutDisplayFunc(Display); //the tick function that gets called as fast as it can to update the graphics glutIdleFunc(Display); //Constantly recall the display function glutMainLoop(); //Starts the glut tick loop cycle return 0; } References 50%