CSG (Constructive Solid Geometry)

Processing Development
4

maybe you can help me with one thing.

I haven’t found it in the documentation http://lifesine.eu/so/jcsg-0.5.8-SNAPSHOT-javadoc.zip

I try to rotate a cylinder. See the commented out line with lots of ???

Thank you.

Chrisir

// the PShape reference which will contain the converted 
PShape csgResult;

void setup() {
  // 
  size(900, 900, P3D);
  noStroke();

  // JCSG sample code:
  // we use cube and sphere as base geometries
  CSG cube = new Cube(12, 2, 2).toCSG();
  CSG sphere = new Sphere(1.25).toCSG();

  // cyl2 == horizontal   
  float cylRadius=.65;
  CSG cyl2 = new Cylinder( cylRadius, cylRadius, 12, 43).toCSG();
  cyl2 = cyl2.transformed(Transform.unity().translateX(2));
  // cyl2 = cyl2.transformed(Transform.unity().rotate(1.0, 1.2, 2.0));  // ???????????????????????????????????

  csgResult = CSGToPShape(cyl2, 45);
}

void draw() {
  background(0);
  lights();
  translate(width * 0.5, height * 0.5, 0);

  shape(csgResult);
}

//-----------------------------------------------------------------------------

// re-usable function to convert a CSG mesh to a Processing PShape
PShape CSGToPShape(CSG mesh, float scale) {
  // allocate a PShape group
  PShape csgResult = createShape(GROUP);
  // for each CSG polygon (Note: these can have 3,4 or more vertices)
  for (Polygon p : mesh.getPolygons()) {
    // make a child PShape
    PShape polyShape = createShape();
    // begin setting vertices to it
    polyShape.beginShape();
    // for each vertex in the polygon
    for (Vertex v : p.vertices) {
      // add each (scaled) polygon vertex 
      polyShape.vertex((float)v.pos.getX() * scale, (float)v.pos.getY() * scale, (float)v.pos.getZ() * scale);
    }
    // finish this polygon
    polyShape.endShape();
    //append the child PShape to the parent
    csgResult.addChild(polyShape);
  }
  return csgResult;
}
//