example from class February 21, 2018

Rainbow - Function example Sketch.pde

/* Function with Return Sketch */

// VARIABLES

color red = color(231, 29, 36);
color orange = color(255, 113, 31);
color yellow = color(255, 255, 31);
color green = color(0, 160, 31);
color blue = color(0, 129, 255);
color purple = color(127, 0, 255);

void setup() {
    size(1000, 1000); 
    strokeWeight(5); // bold!
    background(255); // white!

}

void draw() {
    stroke(red); // red color
    line(pmouseX, pmouseY, mouseX, mouseY); // draw the first line
    stroke(orange); // 
    doubleLine(pmouseX, pmouseY, mouseX, mouseY, 10); // draw the second line
    stroke(yellow); // 
    doubleLine(pmouseX, pmouseY, mouseX, mouseY, 20); // draw the third line
    stroke(green); // 
    doubleLine(pmouseX, pmouseY, mouseX, mouseY, 30); // draw the fourth line
    stroke(blue); // 
    doubleLine(pmouseX, pmouseY, mouseX, mouseY, 40); // draw the fifth line
    stroke(purple); // 
    doubleLine(pmouseX, pmouseY, mouseX, mouseY, 50); // draw the fifth line
    //line(x1, y1, z1, x2, y2, z2);
}

// FUNCTIONS

// this draws a line below
void doubleLine(int plineX, int plineY, int lineX, int lineY, int linePos) {
    plineY = plineY+linePos; // offset the Y
    lineY = lineY+linePos; // offset the other Y
    line(plineX,plineY,lineX,lineY); // draw the line
}