use <threads.scad>;

/* [Teil] */
Teil = 1; // [1:Behälter, 2:Deckel, 3:Trennplatte]
Debug = true;

/* [Hidden] */
$fn = 180;
D=54;
H=1.5;
FaseOben=43.5;

function durchmesser(Innengewinde) = (Innengewinde)?1:0;

module gewinde(L, Innengewinde) {
   metric_thread(diameter=50+durchmesser(Innengewinde), pitch=5, thread_size=2, length=L, internal=Innengewinde, leadin=(Innengewinde)?0:2, test=false);
}

///////////////////////////////////////////////////////////////////////////////////////////////////////
module behaelter() {
  union() {
    difference() {
      union() {
        // Aussenform mit Gewinde
        cylinder(d1=D-1, d2=D, h=H);
        translate([0,0,1.5]) cylinder(d=D, h=50);
        translate([0,0,51.5]) cylinder(d1=D, d2=D-1, h=H);
        translate([0,0,52]) gewinde(L=15, Innengewinde=false);
      }
      // gesamte Innenbohrung
      translate([0,0,0]) cylinder(d=D-2.5, h=52);
      // "Kernloch" im Gewinde
      translate([0,0,52]) cylinder(d=FaseOben, h=20);
      // Ovale Schlitze in der Seitenwand
      for(z=[4:3:45]) {
        translate([0,0,z])
        for(r=[0:360/40:359]) {
          rotate([0,90,r]) hull() {
            translate([0,1.15,0]) cylinder(d=1, h=80, center=true);
            translate([0,-1.15,0]) cylinder(d=1, h=80, center=true);
          }
        }
      }
    }
    // Fase innen am Übergang zum Gewinde (wegen Support)
    translate([0,0,46.5]) difference() {
      cylinder(d=D-2.5, h=5.5);
      cylinder(d1=D-2.5, d2=FaseOben, h=5.5);
    }
    // Unten Mitte fester Boden
    cylinder(d=16, h=H);
    // 20 Speichen (Tortenstücke) im Boden
    for(r=[0:360/20:359]) {
      rotate([0,0,r]) hull() {
        rotate([0,0,+3]) cube([(D-2)/2,0.001,H]);
        rotate([0,0,-3]) cube([(D-2)/2,0.001,H]);
      }
    }
    // Kreisringe im Boden
    for(i=[16:3.5:D-3]) difference() {
      cylinder(d=i+2, h=H);
      cylinder(d=i, h=H);
    }
    // Boden Abschluss zum Rand
    difference() {
      cylinder(d=D-2.5, h=H);
      cylinder(d=D-2.5-2, h=H);
    }
  }
}

///////////////////////////////////////////////////////////////////////////////////////////////////////
module deckel() {
  difference() {
    union() {
      cylinder(d=70, h=2.5);
      translate([0,0,2]) cylinder(d=D, h=17);
      translate([0,0,2+17]) cylinder(d1=D, d2=D-2, h=1);
    }
    translate([0,0,2.5]) gewinde(L=18, Innengewinde=true);
    cylinder(d=42, h=4);
    cube([6,44,10], center=true);
  }
}

///////////////////////////////////////////////////////////////////////////////////////////////////////
module trennplatte() {
    H=1;
    D_trennplatte=FaseOben-1.25;
    // Unten Mitte fester Boden
    difference() {
      cylinder(d=16, h=H);
      for(r=[0:360/4:359]) rotate([0,0,r]) scale([1,2,1]) translate([4,0,0]) cylinder(d=1.25, h=10, center=true);
    }
    // 20 Speichen (Tortenstücke) im Boden mit Abstandshalter (H+1)
    for(r=[0:360/20:359]) {
      rotate([0,0,r]) {
        hull() intersection() {
          translate([25,0,0]) cube(40, center=true);
          union() {
            rotate([0,0,+3]) cube([(D_trennplatte-2)/2,0.001,H]);
            rotate([0,0,-3]) cube([(D_trennplatte-2)/2,0.001,H]);
          }
        }
        translate([18,0,0]) cylinder(d=1.5, h=H+1);
      }
    }
    // Kreisringe im Boden
    for(i=[16:3.5:FaseOben]) difference() {
      cylinder(d=i+2, h=H);
      cylinder(d=i, h=H);
    }
    // Boden Abschluss zum Rand
    difference() {
      cylinder(d=D_trennplatte, h=H);
      cylinder(d=D_trennplatte-2, h=H);
    }
}


///////////////////////////////////////////////////////////////////////////////////////////////////////
intersection() {

  union() {
    if (Teil == 1) {
      intersection() {
        behaelter();
        //translate([0,0,52]) cylinder(d=82, h=20);
      }
    }
    if (Teil == 2) {
      deckel();
    }
    if (Teil == 3) {
      trennplatte();
    }
  }

  if (Debug) rotate([0,0,45]) cube(100);
}