Displaying PShapes

Processing Coding Questions
1

As part of my larger Scribble Portrait series, I’m trying to make all the scribbles shapes that I can add as children to a parent shape, to manipulate them all together after they’ve been drawn. I’m having trouble getting shapes created with createShape() to render.

The following code doesn’t draw anything… am I missing or misusing something here?

PShape curve;

void setup() {
  size(600, 600, P3D);
  background(255);
  stroke(0);
  strokeWeight(1);
}

void draw() {
   curve = createShape();
   curve.setStroke(0);
   curve.beginShape();
   for(int i=0; i<20; i++) {
     curve.curveVertex(random(width),random(height),random(100));
   }
   curve.endShape();
   shape(curve);
}
2 Likes
2

Your shape is drawing. The problem is that it’s drawing white shapes on a white background, so you can’t see it.

Try changing your background color to red, and your frame rate to 1 to see what I mean.

  background(255, 0, 0);
  frameRate(1);

image
image.png602×627 6.94 KB

You can fix this by setting the fill and stroke of the shape:

   curve.beginShape();
   curve.noFill();
   curve.stroke(0);

image
image.png602×627 21.4 KB

PS: Your scribble project is pretty cool! I’d be curious to hear more about your experience selling on the internet sometime.

2 Likes
3

basically, if it would work you would create 60 different shapes per second…

sorry, i changed too much, but to give you a idea
about the sketch structure i would use:

PShape curve;

void setup() {
  size(200, 200,P3D);
  make_curve();
}

void make_curve() {
  curve = createShape();
  curve.beginShape();
  for (int i=0; i<20; i++)
            curve.curveVertex(random(width), random(height),0);
  curve.endShape();  
  curve.setStroke(color(200, 0, 0));
  curve.setFill(color(0,200,0));
}

void draw() {
  background(200,200,0);
  shape(curve,0,0);
}

void mousePressed() {
 make_curve(); 
}
2 Likes
4

Ahh, word… wasn’t setting the stroke right on the shape, and didn’t realize that a noFill() in setup didn’t apply to the shapes. Thank you!!

Thanks for the kind words. Happy to share more about the little business, hit me up hello@stirman.net :slight_smile:

2 Likes
5

hay alguna forma de aprender a hacer scribble portraits? es para un pen plotter