定義した小枝を木の枝として描画します。
//**********************************************************************************
#macro Cross_twig(V_end,Org_size,Twig_length,Tws,Twr,Rt,Tr)
#local H_end=1;
#local V_count = 0; #while ( V_count < V_end )
#if(V_count=0) #local Tv=<0,0,0>;
#else #local Tv=vrotate(<2*Org_size,Twig_length+2*Org_size,0>,Twr*z)
*pow(Tws,V_count-1)+Tv; #end
#local H_count = 0; #while ( H_count < H_end )
#local X = sin(H_count*pi/2)*Tv.x;
#local Y = Tv.y; #local Z = cos(H_count*pi/2)*Tv.x;
object { Twig_obj scale pow(Tws,V_count) translate < X, Y, Z > rotate Rt translate Tr }
#local H_count = H_count + 1; #end
#local H_end=4;
#local V_count = V_count + 1; #end
#end
//**********************************************************************************
