Processing, Line Drawing Program, Loop with Mapped Values

linedraw.pde

//draw a contiuous line



void setup() {
  size(500, 500);
  background(0, 0, 0);
}

void draw() {
  println("Mouse X: " + mouseX + " Mouse Y: " + mouseY);
}


void mouseDragged() {
  //check if the previous mouse x position was on the screen of the x axis
  if (pmouseX > 0 && pmouseX < width) {

    //check if the previous mouse y position was on the screen of the y axis
    if (pmouseY > 0 && pmouseY < height) {
      lineDraw(5);
    }
  }
}

void lineDraw(int numberOfLines) {
  for (int i = 0; i < numberOfLines; i++) {
    float scaledColorValue = map(i, 0, numberOfLines, 0, 255);
    stroke(scaledColorValue);
    line(pmouseX + (i * 5), pmouseY+ (i * 5), mouseX+ (i * 5), mouseY+ (i * 5));
  }
}