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I have written the following code for creating a shielded path. The below mentioned code is having a fix set of coordinates: i.e. "pts". How to add the functionality that a user can draw shield where ever he feels like:
;; Create a shielded pathprocedure( shield()errset((let (cv layer purpose list_draw_layer tech width1 tfId)cv= geGetEditCellView()layer = car(leGetEntryLayer()) ;displays layer on LSW is takenpurpose = cadr(leGetEntryLayer()); displays drawing or pin on the selected lswlist_draw_layer =list(layer purpose)tech = techGetTechFile(geGetWindowCellView()); rule deck file id is stored in techwidth1 = techGetSpacingRule(tech "minWidth" layer) ; the minimum width is stored in width1rodCreatePath(?name "shield"?layer list( layer purpose )?pts list(2:-15 2:-5 15:-5 15:-15) If this is not fixed, the user can draw shield anywhere. What changes are needed??width .8?justification "center"?cvId cv?offsetSubPathlist(list(?layer list( layer purpose )?justification "left"?sep 1?width .4) ;end of offset sublist1list(?layer list( layer purpose )?justification "right"?sep 1?width .4) ;end of offset sublist2) ;end of offset list of lists) ;end of rodCreatePath) ; end of lett) ; end of errset) ; end of procedure
You need to use the entry function enterPath. A very good example is found in the Virtuoso Relative Object Design User Guide of exactly what you want. See the Cadence documentation for this document.
In reply to Austin CAD Guy:
I got the code modified by skill genious :)
;; Create a shielded pathprocedure( Shield(win done pts) errset( (let (cv layer purpose list_draw_layer tech width1 tfId)
unless( done printf("Finished!") )
cv = geGetEditCellView() layer = car(leGetEntryLayer()) ;displays layer on LSW is taken purpose = cadr(leGetEntryLayer()); displays drawing or pin on the selected lsw list_draw_layer =list(layer purpose) tech = techGetTechFile(geGetWindowCellView()) ; rule deck file id is stored in tech width1 = techGetSpacingRule(tech "minWidth" layer) ; the minimum width is stored in width1
rodCreatePath( ?layer list( layer purpose )
?pts foreach( mapcar point pts geWindowToEditPoint(hiGetCurrentWindow() point) )
?width .8 ?justification "center" ?cvId cv ?offsetSubPath list(list( ?layer list( layer purpose ) ?justification "left" ?sep 1 ?width .4 ) ;end of offset sublist1 list( ?layer list( layer purpose ) ?justification "right" ?sep 1 ?width .4 ) ;end of offset sublist2 ) ;end of offset list of lists ) ;end of rodCreatePath ) ; end of let t ) ; end of errset) ; end of procedure
Now, if i want the user to specify the width and the spacing through form, how can I pass the value to sep and width over here? Can you please help.
In reply to Manu81:
I answered this on comp.cad.cadence
In reply to Andrew Beckett:
Sorry if I have already pointed you to this code, but I think that it contains all that you need
How can I created slotted metal paths?
You will see in this code that there is use of the enterPath function, as well as an options form (CCSslotMetalForm) for the command ("CCSslotMetal" in this case), and the width value on the form is passed to the enter function and ultimately the underlying command that calls rodCreatePath(), which is CCSslotMetalCB(), the callback function that actually does the work.
The code is somewhat lengthy and is probably best not just pasted here, so please take a look at the above Solution link, or just the code at: CCSslotMetal.il
In reply to skillUser:
I just used used your techinque to generate a single layer shield path.It is working fine.But I also want to go for coaxial shielding for metal2 onward . I want the code such that depending on selected layer ,it should overlap the shield path with higher metal layer with concerned vias, and similarly with bottom metal layer.So can you help me how to proceed .