class Drieh_9gt_gk extends Vormen {
//constructor 1   2  3  4  5   6    7   8
  constructor(n, lr, r, x, y, hoek, sw, c) {
      super(x,y,hoek);
      this.n = n; this.lr = lr; this.r = r;
      this.x = x; this.y = y;
      this.hoek = hoek; this.sw = sw; this.c = c; this.r = r;
    }
 display() {
 stroke(this.c);
 strokeWeight(this.sw);
 let lr = this.lr; let r = this.r; let n = this.n;
 noFill();
 push();
 translate(this.x, this.y);
 rotate(radians(this.hoek));
 let phi= (1+sqrt(5))/2 , nphi = n*phi;
 let h1 = nphi*sin(radians(72)) , a = nphi-nphi/phi;
 let ax1 = (nphi-a)*cos(radians(72)) , ay1 = (nphi-a)*sin(radians(72));
 let b = n-n/phi , ay2 = ay1+b*sin(radians(36));
 let c = a-a/phi , bx1 = c*cos(radians(36));
 let by1 = ay2+c*sin(radians(36));
 let d = b-b/phi , e = c-c/phi , f = d-d/phi ,h = f-f/phi;
 let ex1 = c-(e-f*cos(radians(72))) , ey1 = ay2+f*sin(radians(72));
 let fx1 = (c-e)+f*cos(radians(36)) , fy1 = ay2+f*sin(radians(36));
 let gx1 = (c-e)+(f-h)*cos(radians(36)) , gy1 = ay2+(f-h)*sin(radians(36));
 
 //Driehoek schuine zijde: nphi, basis: n
 beginShape();
 if ((r==1 || r==2 || r==3 || r==4 || r==5 || r==6 || r==7 || r==8 || r==9) && lr==0)
 {vertex(0,0); vertex(n/2,h1); vertex(-n/2,h1);}
 endShape(CLOSE);
 beginShape();
 if ((r==1 || r==2 || r==3 || r==4 || r==5 || r==6 || r==7 || r==8 || r==9) && lr==1)
 {vertex(0,0); vertex(n/2,h1); vertex(-n/2,h1);}
 endShape(CLOSE);
 //driehoek schuine zijde: n, basis: a
 beginShape();
 if ((r==2 || r==3 || r==4 || r==5 || r==6 || r==7|| r==8 || r==9) && lr==0)
 {vertex(n/2,h1); vertex(ax1, ay1); vertex(-n/2,h1);}
 endShape(CLOSE);
 beginShape();
 if ((r==2 || r==3 || r==4 || r==5 || r==6 || r==7|| r==8 || r==9) && lr==1)
 {vertex(-n/2,h1); vertex(-ax1,ay1); vertex(n/2,h1);}
 endShape(CLOSE);
 //driehoek schuine zijde: a, basis: b
 beginShape();
 if ((r==3 || r==4 || r==5 || r==6 || r==7|| r==8 || r==9) && lr==0)
 {vertex(n/2, h1); vertex(ax1, ay1); vertex(0, ay2);}
 endShape(CLOSE);
 beginShape();
 if ((r==3 || r==4 || r==5 || r==6 || r==7|| r==8 || r==9) && lr==1)
 {vertex(-n/2, h1); vertex(-ax1, ay1); vertex(0, ay2);}
 endShape(CLOSE);
 //driehoek schuine zijde: b basis: c
 beginShape();
 if ((r==4 || r==5 || r==6 || r==7|| r==8 || r==9) && lr==0)
 {vertex(bx1,by1);vertex(ax1,ay1); vertex(0,ay2);}
 endShape(CLOSE);
 beginShape();
 if ((r==4 || r==5 || r==6 || r==7|| r==8 || r==9) && lr==1)
 {vertex(-bx1,by1);vertex(-ax1,ay1); vertex(0,ay2);}
 endShape(CLOSE);
 //driehoek schuine zijde: c, basis: d
 beginShape();
 if ((r == 5 || r==6 || r==7|| r==8 || r==9) && lr==0)
 {vertex(bx1, by1); vertex(c ,ay2); vertex(0,ay2);}
 endShape(CLOSE);
 beginShape();
 if ((r == 5 || r==6 || r==7 || r==8 || r==9) && lr==1)
 {vertex(-bx1, by1); vertex(-c,ay2); vertex(0, ay2);}
 endShape(CLOSE);
 //driehoek schuine zijde: d, basis: e
 beginShape();
 if ((r==6 || r==7|| r==8 || r==9) && lr==0)
 {vertex(bx1, by1);vertex(c,ay2);vertex(c-e, ay2);}
 endShape(CLOSE);
 beginShape();
 if ((r==6 || r==7|| r==8 || r==9) && lr==1)
 {vertex(-bx1, by1);vertex(-c,ay2);vertex(-(c-e), ay2);}
 endShape(CLOSE);
 //driehoek schuine zijde: e, basis: f,
 beginShape();
 if ((r==7 || r==8 || r==9) && lr==0)
 {vertex(ex1,ey1); vertex(c, ay2);vertex(c-e,ay2);}
 endShape(CLOSE);
 beginShape();
 if ((r==7|| r==8 || r==9) && lr==1)
 {vertex(-ex1,ey1); vertex(-c,ay2);vertex(-(c-e),ay2);}
 endShape(CLOSE);
 //driehoek schuine zijde: f basis: g
 beginShape();
 if ((r==8 || r==9) && lr==0)
 {vertex(fx1, fy1); vertex(c-e, ay2);vertex(ex1, ey1);}
 endShape(CLOSE);
 beginShape();
 if ((r==8 || r==9) && lr==1)
 {vertex(-fx1, fy1); vertex(-(c-e), ay2);vertex(-ex1, ey1);}
 endShape(CLOSE);
 //Driehoek schuine zijde: g basis: h
 beginShape();
 if (r==9 && lr==0)
 {vertex(ex1,ey1);vertex(fx1,fy1);vertex(gx1,gy1);}
 endShape(CLOSE);
 beginShape();
 if (r==9 && lr==1)
 {vertex(-ex1,ey1);vertex(-fx1,fy1);vertex(-gx1,gy1);}
 endShape(CLOSE);
 pop();
 strokeWeight(1);
 }
}