// 132-old smooth tyre
#ifndef (QUAL) #local QUAL=3; #end

#local Tyre_Half_Lathe=object { lathe {
11,
<18,0> <18,5.6> <18.4,5.9>
<19.6,6.1> <20,6.4> <20,8.6>
<20.4,9>
//<22.3,9> <22.5,9.3> <22.7,9>
//<24.8,9> <25.0,9.3> <25.2,9>
//<27.3,9> <27.5,9.3> <27.7,9>
<29.6,9> <30,8.6> <30.5,4> <30.5,0>
} rotate 90*z }

#local Ridges=object { union {
torus { 22.5,0.3 }
torus { 25.0,0.3 }
torus { 27.5,0.3 }
}
rotate 90*z
}

#local Tyre=object { union {
#if (QUAL>1)
object { Tyre_Half_Lathe }
object { Tyre_Half_Lathe rotate 180*y }
#else
difference { cylinder { <9,0,0>,<-9,0,0>,30 } cylinder { <10,0,0>,<-10,0,0>,20 } } 
#end   
object { Ridges translate 9*x }
object { Ridges translate -9*x }
}
}


/*
#local Tyre_no_Hole=object {
 union {
   cylinder { <0,8,0>,<0,-8,0>,30 }
   cylinder { <0,9,0>,<0,-9,0>,29 }
   torus { 29,1 translate -9*x }
   torus { 29,1 translate 9*x }
 }
 rotate 90*z
}

#local Tyre=object { Tyre_no_Hole }  
*/

#declare _132_dash_old_dot_dat = #if (QUAL = 0) cylinder { <-9,0,0>,<9,0,0>,30 } #else object {
Tyre
bounded_by { cylinder { <-10,0,0>,<10,0,0>,31 } }
}
#end