/*      Color Fade/Cycle Code Added By Garry Jewell
        Use: Rapidly Change Brightness In/Out On Colors And/Or 
        Cycle Objects Through Different Colors. Can be used pretty 
	easily to have some fun in about any program. 
	Is a first draft, feel free to edit/tweak it if ya like.
	Can Contact Me At Fubator@sbcglobal.net If you wanna
	make any suggestions/comments. Be Gentle tho ima noob lol
	This is the first OpenGL i've realy written myself. I added
	it to Lesson7, but seems like it should work in any.
*/
// Globals
GLfloat colorfade;		// Color Brightness
bool    cfDirection;            // Color Fade Direction (FALSE=Decrease/TRUE=Increase)
int     colorSwitch;            // Used to Cycle Through Colors


// In InitGL()
	colorfade=1.0f;		// Start Color Fade At Full Intensity	
    	colorSwitch=0;          // Set Color Switch To the Begining of Its Cycle
    	cfDirection=FALSE;	// Start Color Fade Decreasing


// In DrawGLScene() Place Code Before Drawing The Objects You Want Effected
    switch (colorSwitch)	// Select Color From Premade List With colorSwitch
    {
           case 0:
                {glColor3f(colorfade,0.0f,0.0f);break;}
           case 1:
                {glColor3f(0.0f,colorfade,0.0f);break;}
           case 2:
                {glColor3f(0.0f,0.0f,colorfade);break;}
           case 3:
                {glColor3f(colorfade,colorfade,colorfade);break;}
           case 4:
                {glColor3f(colorfade,0.0f,colorfade);break;}
           case 5:
                {glColor3f(colorfade,colorfade,0.0f);break;}
           case 6:
                {glColor3f(0.0f,colorfade,colorfade);break;}
           default:
                {glColor3f(1.0f,1.0f,1.0f);break;}         // Default To Full Intensity White
    }                 
              

// In DrawGLScene() After Drawing Is Done And Before Returning
    if (cfDirection==FALSE)				// If Fade Is In Reverse Then
    {  colorfade-=0.01f;}				// Subtract colorFade
    else						
    {  colorfade+=0.01f;}				// Increase colorFade, Fade must be going forward if 

not in reverse
    
    if (colorfade<=0.1f|colorfade>=1.0f) {cfDirection=!cfDirection;}	// Toggle Fade At Either Boundry
    if (colorSwitch<=5) {colorSwitch+=1;}		// Increment If Not At End Of Cycle
	                    else
	                    {colorSwitch=0;}		// Restart Cycle If It Is