Processing 1.0 - Processing Discourse - cut a whole in a 3D box

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Index › Programming Questions & Help › OpenGL and 3D Libraries › cut a whole in a 3D box

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cut a whole in a 3D box (Read 1299 times)

Chrisir

cut a whole in a 3D box
Mar 17^th, 2010, 10:33am

Hello,

I have a big box and would like to cut a tunnel in it.

Since I want to make it rotate with peasyCam and have other
boxes behind it, I want a real look-through tunnel and not some black box.

So I paint red box A (big one) and then a black box B, thin and but long. I want B to be the tunnel, but noFill or so doesn't work.

Is there a cut-command or a substBox command or something?

Blakout-ish,

Chrisir Wink

antiplastik

Re: cut a whole in a 3D box
Reply #1 - Mar 17^th, 2010, 10:50am

You want a hollow shape, but there is no way to do so using box(). You will have to draw the top-right-bottom-left sides of your tunnel yourself or maybe use a shape library that would provide such shapes.

It's not very hard, though :

Quote:

size(200, 200, P3D);
background(255);
translate(width /2, height/2);
for (int i = 0; i < 4; i++) {
  rotateZ(i*PI*0.5);
  pushMatrix();
    translate(0, 24, 0);
    scale(1, 0.1, 1);
    box(50);
  popMatrix();
}

jeffg Senior Member Offline Posts: 472	Re: cut a whole in a 3D box Reply #2 - Mar 17^th, 2010, 12:20pm Why am I thinking Virtual Justin Timberlake and Andy Samberg haha. 1: "Cut a hole in a box", 2: "Put your junk in that box", 3: "Make her open the box... and that's the way you do it!" My **** in a 3D box!

Chrisir Full Member Offline Posts: 207 Germany	Just left the wholes out... Reply #3 - Mar 17^th, 2010, 1:45pm Hello! I did it! I took your idea and build a Menger's Sponge from it! It's a recursive function; with depth 3 or more it gets real slow... http://openprocessing.org/visuals/?visualID=8326 For Explanation see: http://www.angelfire.com/art2/stw/ @jeffg: Thanks! Greetings, Chrisir

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