-#include <windowClass.h>

-

-void Window::setupRender(){

- glClearColor(0,0,0,0); //set the background color

-

-}

-

-void Window::render(){

- //a matrix is a blank canvas for the computer to draw on, the matrices are stored in a "stack"

- //GL_PROJECTION has 2 matrices

- //GL_MODELVIEW has 32 matrices

- glMatrixMode(GL_PROJECTION); //set the matrix mode as projection so we can set the ortho size and the camera settings later on

- glPushMatrix(); //push the matrix to the top of the matrix stack

- glLoadIdentity(); //replace the entire matrix stack with the updated GL_PROJECTION mode

-

- glOrtho(0,SCREEN_WIDTH, 0,SCREEN_HEIGHT, -1,1); //set the the size of the screen

-

- glMatrixMode(GL_MODELVIEW); //set the matrix to modelview so we can draw objects

- glPushMatrix(); //push the matrix to the top of the matrix stack

- glLoadIdentity(); //replace the entire matrix stack with the updated GL_MODELVIEW mode

-

- glPushMatrix(); //basically here we put a blank canvas (new matrix) on the screen to draw on

- glClear(GL_COLOR_BUFFER_BIT); //clear the matrix on the top of the stack

-

- /**************************

- **** RENDER STUFF HERE ****

- **************************/

- glColor3f(1.0f, 0.0f, 0.0f); //color to red

- glRectf(0,0, 50,50); //draw a test rectangle

- glColor3f(0.0f, 1.0f, 0.0f); //color to blue

- glRectf(50,0, 100,50); //draw a test rectangle

- glColor3f(0.0f, 0.0f, 1.0f); //color to green

- glRectf(100,0,150,50); //draw a test rectangle

- /**************************

- **** CLOSE THE LOOP ****

- **************************/

-

- glPopMatrix(); //take the matrix(s) off the stack to pass them to the renderer

- SDL_GL_SwapWindow(window); //give the stack to SDL to render it

-} \ No newline at end of file