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PCell for a partial torus

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Hello Folks,
I would like to create a PCell for a partial torus with three parameters, outer radius, inner radius (size of hole for a complete torus) and azimuth angle (or fraction of a complete torus). 
Thanks from a
Newbie


Originally posted in cdnusers.org by deanjennings
Parents

  • Maybe you need code for a drc right circle on multiple of manufacturing grid for rthe solution of your problem:

    procedure( DrcCorrectDrawCircle(cv lpp centerx centery radius grid )
    let( (ccords x y lasty yend rsq list2)
    ccords='()
    x=0
    lasty=0.0
    y=radius/grid
    rsq=radius*radius/(grid*grid)
    yend=radius*sqrt(2.0)*0.5/grid
    while(y>yend
    x=floor(sqrt(rsq-(y*y)))
    ccords=cons(list(x*grid y*grid) ccords)
    y=y-1.0
    );while
    y=grid*floor(yend)
    xy45=list(y y)

    list2=append(
    reverse(ccords)
    list(xy45))
    list2=append(list2
    foreach(mapcar elem ccords list(cadr(elem) car(elem))))
    list2=append(list2
    list(0.0:0.0) )
    dbCreatePolygon(cv lpp foreach(mapcar elem list2
    list(car(elem)+centerx
    cadr(elem)+centery)))
    )
    )


    in PCell code use
    ...
    DrcCorrectDrawCircle(pcCellView list("M1" "drawing") 3.4 ...)
    ...



    Regards

    Elmar


    Originally posted in cdnusers.org by herzer
Reply

  • Maybe you need code for a drc right circle on multiple of manufacturing grid for rthe solution of your problem:

    procedure( DrcCorrectDrawCircle(cv lpp centerx centery radius grid )
    let( (ccords x y lasty yend rsq list2)
    ccords='()
    x=0
    lasty=0.0
    y=radius/grid
    rsq=radius*radius/(grid*grid)
    yend=radius*sqrt(2.0)*0.5/grid
    while(y>yend
    x=floor(sqrt(rsq-(y*y)))
    ccords=cons(list(x*grid y*grid) ccords)
    y=y-1.0
    );while
    y=grid*floor(yend)
    xy45=list(y y)

    list2=append(
    reverse(ccords)
    list(xy45))
    list2=append(list2
    foreach(mapcar elem ccords list(cadr(elem) car(elem))))
    list2=append(list2
    list(0.0:0.0) )
    dbCreatePolygon(cv lpp foreach(mapcar elem list2
    list(car(elem)+centerx
    cadr(elem)+centery)))
    )
    )


    in PCell code use
    ...
    DrcCorrectDrawCircle(pcCellView list("M1" "drawing") 3.4 ...)
    ...



    Regards

    Elmar


    Originally posted in cdnusers.org by herzer
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