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HTML

              
                <html>
  <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.11/p5.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.11/addons/p5.dom.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.11/addons/p5.sound.min.js"></script>
    <link rel="stylesheet" type="text/css" href="style.css">
  </head>
  <body>
    <section class="left"><script src="sketch.js"></script></section>
    <section class="right"><p>for some reason, the numeric pad doesn't work. Use SHIFT and the key number... </p>
<h2>Test d'Interactions</h2>
<h3>MOUSE</h3>
<ul>
 	<li>Mouse X and Mouse Y = position of the shape</li>
 	<li>left click = new random saturation level</li>
</ul>
<h3>KEYS¶</h3>
<ul>
 	<li>z : erase</li>
 	<li>g : displays a 'générique" for some time and returns to screen</li>
 	<li>w : save png of the whole screen</li>
 	<li>b : save very large tif of the whole screen</li>
 	<li>r : start pdf recording</li>
 	<li>e : start pdf recording</li>
 	<li>p : save one frame only to pdf file</li>
 	<li>1 : hue 0 to 120</li>
 	<li>2 : hue 120 to 240</li>
 	<li>3 : hue 240 to 360</li>
</ul>
    </section>
    
  </body>
</html>

              
            
!

CSS

              
                html, body {
  margin: 0;
  padding: 0;
}

body{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  flex-direction: row
}

.right {
  
}



              
            
!

JS

              
                /* A faire 
* Teste les vareractions entre le sketch et le clavier ou la souris
* teste des méthodes de sauvegarde de l'écran ou d'une ou plusieurs frame
* en pdf ou en image png, tif, ...
* 
* Peut produire des images plus grandes que l'écran 

* Les sources principales 
* Sur les intereractions, et principes généraux de sauvegarde
    * P_2_0_03.pde ( livre Generative Design) 
    * https://github.com/generative-design/Code-Package-Processing-3.x/blob/master/01_P/P_2_0_03/P_2_0_03.pde
    * https://github.com/jeffThompson/ProcessingTeachingSketches/blob/master/Basics/PDF_Export/PDF_Export.pde
    * https://github.com/jeffThompson/ProcessingTeachingSketches/blob/master/Basics/SaveStillImage/SaveStillImage.pde 

* sur la façon de créer une image beaucoup plus grande que le canevas / écran
    * en img png, tif ou autre
    * en pdf (mais seulement pour une frame)
    * https://stackoverflow.com/questions/33816798/can-i-save-a-sketch-in-a-different-resolution-than-the-createCanvas-in-processing
    * et aussi idée 16 https://amnonp5.wordpress.com/2012/01/28/25-life-saving-tips-for-processing/

* sur la façon de créer un générique varéressant, idées 14 & 15 de 
* https://amnonp5.wordpress.com/2012/01/28/25-life-saving-tips-for-processing/

* Constrain an object within a circle ! 
* idea 23 https://amnonp5.wordpress.com/2012/01/28/25-life-saving-tips-for-processing/

* voir https://processing.org/tutorials/prvar/ pour comprendre
    - diff image vectorielle ou raster
    - record pdf sauve tout ce qui est dessiné sur l'écran à partir du moment où on commence l'enregistrement
    - explique aussi comment faire des dessins avec une beaucoup plus grande taille que l'écran

* pour la création de pdf en javascript
* on peut voir avec http://zenozeng.github.io/p5.js-pdf/examples/#basic
*/

/* Interactions
* MOUSE
* Mouse X and Mouse Y = position of the shape
* left click          : new random saturation level

 /* KEYS
 * z                   : erase
 * g                   : displays a 'générique" for some time and returns to screen  
 * w                   : save png of the whole screen
 * b                   : save very large tif of the whole screen 
 * r                   : start pdf recording
 * e                   : start pdf recording
 * p                  : save one frame only to pdf file
 * 1                   : hue 0 to 120
 * 2                   : hue 120 to 240
 * 3                   : hue 240 to 360
 */
 
'use strict';
 
var recordPDF = false;
var saveOneFrame = false;

// pour l'écran de "générique"
var blinker;
var timer = -3000;
var gener = false ; // true (si appui sur g) => afficher le générique 

var r ;            // radius
var hue ;        // HUE of shape
var compHue;      // complementary hue
var sat ;        // saturation of shape's color

function setup() {

  createCanvas(600, 400) ;
  colorMode(HSB, 360, 100, 100, 100); 
  

  r = 40 ;
  hue = 0 ;
  compHue = 0 ;
  sat = 50 ;
  background(0,0,99,100) ;  // white

}

function draw() {
  if(saveOneFrame == true) {
        beginRecord(PDF, "framePDF/" + timestamp() + ".pdf"); 
  }
  
  if (gener) {
    
    drawGener() ;
    
  } else {
  
    smooth();
    strokeWeight(6);
    compHue = compl( hue) ;
    stroke( compHue, sat, 100, 70 );
    fill( hue, sat, 100, 70 );
    ellipse( mouseX, mouseY, r, r );
  }
  if(saveOneFrame == true) {
      endRecord();
      saveOneFrame = false;
    }
}

function compl( hue) {

  var ch = (hue + 180) % 360  ; // modulo 360 to make it a wheel !
  return ch ;
z
}


/* Affiche un écran de générique 
* jusqu'à ce que gener redevienne false
*/
function drawGener() {
  
  // idées 14 & 15 de 
  //  https://amnonp5.wordpress.com/2012/01/28/25-life-saving-tips-for-processing/

  background(255);
  fill(0);
  text("you are in frame: " + frameCount,50,50);
  text(millis()/1000 + " seconds have passed since the start", 50,100);
  text("this text will be here forever",50,150);
  if (frameCount < 500) {
    text("this text will be here for 500 frames",50,200);
  }
  if (frameCount > 800) {
    text("this text will be here from 800 frames onwards",50,200);
  }
  if (millis() < 8000) {
    text("this text will be here the first 8 seconds",50,250);
  }
  if (millis() > 12000) {
    text("this text will be here from 12 seconds onwards",50,250);
  }
  if (frameCount % 12 == 0) { blinker = !blinker; }
  if (blinker) {
    text("this text will blink",50,300);
  }
  if (millis() - timer < 3000) {
    text("this text will be here 3 secs after pressing a key",50,350);
  }
}


function mouseReleased() {
  sat = random(50, 100) ;
  print ("sat", sat) ;
}
233
function keyReleased() {
	
	/* KEYS
	 * del, backspace or z	: erase
	 * g                   	: displays a 'générique" for some time and returns to screen  
	 * w                   	: save png of the whole screen
	 * r                   	: start pdf recording
	 * e                   	: start pdf recording
	 * p                  	: save one frame only to pdf file
	 * 1                   	: hue 0 to 120
	 * 2                   	: hue 120 to 240
	 * 3                   	: hue 240 to 360
	 */
  if (keyCode == DELETE || keyCode == BACKSPACE || ( key == 'z' || key == 'Z' ) ) {
	
	background(0,0,99,100) ; // RAZ écran  
	  
  } 
  if (key == 'g' || key == 'G') {
	  
	gener = !gener ; // toggle gener
    timer = millis();
    background(0,0,99,100) ; // RAZ écran
  }
  if (key == 'p' || key == 'P') saveOneFrame = true ;
  if (key == 's' || key == 'S') saveCanvas(gd.timestamp(), 'png');

  if (key == '1') hue = random(0, 120) ;
  if (key == '2') hue = random(120, 240) ;
  if (key == '3') hue = random(240, 360);

  if (key == 'r' || key == 'R') {

  // ------ pdf record and export ------
    if (recordPDF == false) {
      beginRecord(PDF, "PDFrec/" + timestamp()+".pdf");
      println("recording started");
      recordPDF = true;
      colorMode(HSB, 360, 100, 100, 100);
      smooth();
      noFill();
      background(360);
    } else if (recordPDF) {
      println("recording stopped");
      endRecord();
      recordPDF = false;
      background(360); 
    }	  

  }
  if (key == 'w' || key == 'W') saveCanvas("Wsaved/" + timestamp() + "_##.png");

}

// see translation in https://gist.github.com/espinielli/f0366ad2c356b8ac3cfd
function timestamp() {
   var now = new Date();
   return  now.toISOString();
}

              
            
!
999px

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