How to fill a polygon with color? Besides the normal rectangle, squares etc.

calelin

I would like to fill the polygon of red lines by some color. Besides I don't want the color covering the points inside the polygon. Any kind of help will be appreciated, thank you so much!

jeremydouglass

@calelin -- Re:

I would like to fill the polygon of red lines by some color.

Look at PShape, or use beginShape() / vertext() / endShape() :

• https://processing.org/reference/PShape.html
• https://processing.org/tutorials/pshape/
• https://processing.org/reference/beginShape_.html
• https://processing.org/reference/vertex_.html
• https://processing.org/reference/endShape_.html

Besides I don't want the color covering the points inside the polygon. Any kind of help will be appreciated, thank you so much!

Just draw the polygon first, then the points:

void draw(){

  // draw polygon first

  // then draw points on top of it

}

... like this:

void draw() {
  background(255);

  // move to center
  translate(width/2, height/2);

  // style polygon
  fill(102);
  stroke(255);
  strokeWeight(2);

  // draw polygon
  beginShape();
  vertex(0, -50);
  vertex(14, -20);
  vertex(47, -15);
  vertex(23, 7);
  vertex(29, 40);
  vertex(0, 25);
  vertex(-29, 40);
  vertex(-23, 7);
  vertex(-47, -15);
  vertex(-14, -20);
  endShape(CLOSE);

  // move to upper left corner
  translate(-width/2,-height/2);

  // style points
  fill(255, 0, 0);
  stroke(0, 0, 255);
  strokeWeight(1);

  // draw points
  for (int i=0; i<30; i++) {
    ellipse(random(width), random(height), 4, 4);
  }
}