11.2.14 bdPlan



  \begin{texgraph}[name=intersection,export=pgf]
  Marges(0,0,0,0), ModelView(central), DistCam(20),
  view(-6,6,-6,6), size(7.5),
  theta:=-10*deg, phi:=60*deg,
  P1:=planEqn([1,1,1,2]),P2:=[Origin, vecK-vecJ],
  D:= interPP(P1,P2),
  a:=Copy(getdroite(D),1,2),
  b:=Copy(getplan(P1,0.75),11,2),
  c:=Copy(getplan(P2,0.75),3,2),
  Build3D(
    bdPlan(P1, [color:=red, opacity:=0.7,
                 scale:=0.75 ]),
    bdPlan(P2, [color:=blue,opacity:=0.7,
                scale:=0.75]),
    bdDroite(D, [color:=darkgreen,
                 width:=12]),
    bdAxes([0,0],[color:=gold,
                  width:=8, arrows:=1]),
    bdLabel(a,"$D$",[labelpos:=[0.5,-i]]),
    bdLabel(b,"$P_1$",[labelpos:=[0.5,i]]),
    bdLabel(c,"$P_2$",[labelpos:=[0.5,i]])
           ),
  Display3D()
  \end{texgraph}

 PIC



Intersection of 2 planes