/* line_gradient.pde
   Edited by Justin Hsia (orig. Larry Snyder)

   Use a for-loop to draw vertical lines using a stroke gradient
*/

size(500,500);
background(255);
strokeWeight(5);


for(int i=25; i <= width; i = i + 25) {
  //stroke(i*25);                // option 1: start i = 1, update i = i + 1
  //line(i*25,0,i*25,height);    //   i represents the line number
                               

  // first:  line(25,0,25,height)
  // second: line(50,0,50,height)
  // third:  line(75,0,75,height)
  // etc.


  stroke(i);                   // option 2: start i = 25, update i = i + 25
  line(i,0,i,height);          //   i represents x-position                               
}