// Bounce.c
// Demonstrates a simple animated rectangle program with GLUT
// OpenGL SuperBible, 2nd Edition
// Richard S. Wright Jr.
// #include <windows.h>
#include <gl/glut.h>
// Initial square position and size
GLfloat x1 = 100.0f;
GLfloat y1 = 150.0f;
GLsizei rsize = 50;
// Step size in x and y directions
// (number of pixels to move each time)
GLfloat xstep = 1.0f;
GLfloat ystep = 1.0f;
// Keep track of windows changing width and height
GLfloat windowWidth;
GLfloat windowHeight;
// Called to draw scene
void RenderScene(void)
{
// Clear the window with current clearing color
