Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                
              
            
!

CSS

              
                
              
            
!

JS

              
                var x1 = 0, y1 = 0, x2 = 400, y2 = 400; // initial ordered pairs

function setup() {
  createCanvas(400, 400); //create the canvas
  background(0); //black background
  frameRate (5); //frame rate or speed
}

function draw() {
  stroke(150, 250, 200) //linecolor
  line(x1,y1,x2,y2) //draw line
  y1 = y1+ 5; //change the y1 with each loop
  y2 = y2 - 5;//change the y2 with each loop
  slope = (y2-y1)/(x2-x1); //calculate slope
  strSlope = str(round(slope,1)); //round the slope and make it into a string
  string = join(['Slope =  ',strSlope ],'');//create the string to print;
  fill(255); //set the color to white for the rectangle
  rect(180,380,100,400);//make the rectangle (x,y,width,height)
  stroke(0);//set the text color to black
  fill(0);//set the text fill to black
  text(string,200,395);//print the text
  if(y1>400){ //stop loop condition
    noLoop();
     }
}
              
            
!
999px

Console