Tag 3d, everything about 3d

How To Make a 3D-Paper Model from a Heightfield in Processing

Posted by Nikolaus Gradwohl Sun, 07 Mar 2010 14:41:39 GMT

I just wrote a little processing sketch that takes a height field like this

heightfield

calculates a pdf containing something like this

example

which can be cut out and sticked together to a 3d model like this

finished model

Printed Processing sketch

Posted by Nikolaus Gradwohl Wed, 13 Jan 2010 05:05:04 GMT

I just printed the first stl file that i generated using a processing sketch.

I used the unlekkerlib to export a stl file from a sketch that generates simple 3d spiral, used blender to add a socket and printed it on my makerbot. Skeinforge complained about some invalid triangles, but beside that it worked surprisingly well.

This is what it looks like in blender rendered

and this is what the makerbot made of it printed

and this is the processing-sketch i used to generated the spiral

import unlekker.data.*;

void setup() {
  size(300,300,P3D);
  noLoop();
}

void draw() {
  translate(width/2,height/2);
  background(0);
  fill(255);
  lights();
  noStroke();
  //stroke(255);
  beginRaw("unlekker.data.STL","guru.stl");
  beginShape(QUAD_STRIP);
  for( int i =0; i < 100; i++ ) {
    for(int a=0; a < 36; a++) {
      float r = 10 - map(i,0,100,0,10);
      vertex( r * sin( radians( a * 10 )) + sin(radians(i*10)) * 10, 
              -i*1, 
              r * cos(radians(a*10)) + cos(radians(i*10)) * 10);

      int j = i+1;
      vertex( r * sin( radians( a * 10 )) + sin(radians(j*10)) * 10, 
              -j*1, 
              r * cos(radians(a*10)) + cos(radians(j*10)) * 10);
    }
  }
  endShape();
  endRaw();
}

Tags 3d, makerbot, processing | no comments