Ziyan wrote:
> My program is below, but something wrong happens when I replace the A(...)
> with object{A(...)} as I want to translate the object {A(...)}and it shows
> "Prase Error: No matching } in 'object', box found instead."  Could someone
> here hele me solve the problem?(Without object{} but just with A(...) it
> runs smoothly and I guess I could invoke the macro with ".inc" but don't
> know how to invoke it.)
> 
> #include "colors.inc"
> #include "textures.inc"
> #include "metals.inc"
> 
> camera{
>        location <0,10,-20>
>        direction <0,0,1>
>        up <0,1,0>
>        right <4/3,0,0>
>        look_at <0,0,0>
>       }
> 
> background {color rgb <0.5,0.5,0.5>}
> 
> object {light_source {<20,100,-200> colour White}}
> 
> #macro A(Angle,Radius,y_rotate,A_rotate)
> 
> #local Index=0;
> #while (Index<=y_rotate/Angle)
>  #local x_delta_move=-Radius*(1-cos(Angle*Index));
>  #local z_delta_move=-Radius*sin(Angle*Index);
>  #local y_delta_rotate=Index*Angle;
>  box{<-0.4,-0.4,-0.4>,<0.4,0.4,0.4>
>      translate <x_delta_move,0,z_delta_move>
>      rotate y_delta_rotate*y
>      pigment{colour White}
>      rotate A_rotate*y
>      scale 0.2}
>  #local Index=Index+1;
> #end
> #end
> 
> object{A (0.01*3.14/180,100,26*3.14/180,180)}
> object{A (0.01*3.14/180,100,26*3.14/180,0)}
> 
> 
> 
I think you need  a union { } block

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