gistfile1.pde

// draw a rect filled with diagonal stripes
 
void setup ()
{
    size( 200, 200 );
}
 
void draw ()
{
    background(255);
    
    int x = 20, y=20, w=width-40, h=height-40;
    
    stroke( 0xFFFF9900 ); noFill();
    
    for ( int ss = 5; ss < w+h ; ss += 5 )
    {
        //stroke( ss > h ? (ss > w ? 0xFF00FF00 : 0xFFFF0000) : 0 );
        line( ss <= h ? x    : x-h+ss,
              ss <= h ? y+ss : y+h,
              ss <= w ? x+ss : x+w,
              ss <= w ? y    : y-w+ss
            );
    }
}