how to get the orientation of the terminal in "symbol"

Yi,

Terminals are a logical rather than physical object, so they don't have an orientation. The associated pins can be found by looking at term~>pins and for each pin you can find the pin figures by looking at pin~>figs (in IC5141 there could only be one, so it would be pin~>fig). Even in IC61X, a symbol will only ever have one pin figure (there can be multiple pins though).

For symbols, these pin figures are nearly always shapes (e.g. a rectangle or ellipse (circle)), and shapes do not have an orientation.

So I'm not really sure what you're trying to find here and why you need that. Perhaps if  you explain your motivation, then I could suggest a different approach?

Regards,

Andrew.

Hi Andrew

Thank you for your reply

The motivation of the question is from the script I have written to add the "cdsTerm" into a existing "symbol".

Although there is procedure in the cadence we can add the "cdsTerm" while creating the "symbol" from "schematic", not every designer inside the company follow such procedure. Then it ends up that there are a lot of "symbols" do not have "cdsTerm" for every pin (terminal).

my script is to add the "cdsTerm" to each pin, when the "symbol" is already there.

The "cdsTerm" is added based on an assumption that "input pin" is on the left side of the block, "output pin" is on the right side of the block, and "inout pin" is on the top/bottom side of the block. So after running the script, the "cdsTerm" should be added like this, take input pin for example.

 the "cdsTerm" is always at the left side of the input pin.

  unfortunately, such assumption is not sure, as some designers do put the pins in the location they want, and do not care about the pin type.

so, we have the user case like this:

the "cdsTerm" are overlapped on each other.

I thought it's caused by the orientation of the pins (terminals), and I did not include such info into the script.

So, I was thinking, if I can get the orientation of the pins (terminals), then I can use this information to put the "cdsTerm" at the right place with right orientation.

above is my motivation to search for the orientation of the pins(terminals), hope you can help me to find an alternative.

Best Regards

Yi

I have done a little script that gives you the orientation of a point XY concidering the potition of the bounding box (in that case : the bBox of your symbol).

Hope it helps,

defun( angleSectionr (XY @optional (teta acos(-1)/2)) ;<= marche aussi
let((phi X Y pi Xr Yr) X=car(XY) Y=cadr(XY) pi=acos(-1)
;; printf("[angleSectionr]%L\n" list(XY X==0))
phi=cond(
(X==0 if(Y<0 -pi/2  pi/2))
(X<0 if(Y<0 atan(Y/X)-pi atan(Y/X)+pi))
(t atan(Y/X) ))
;; printf("phi:teta = %L\n" phi:teta)
;; printf("phi:teta = %L[deg]\n" list(phi/pi*180 teta/pi*180))
cond(
(teta-pi<=phi&&phi<-teta 0)
(-teta<=phi&&phi<teta 1)
(teta<=phi&&phi<pi-teta 2)
(t 3)
)))

;; phi se retrouve entre -pi et +pi
;; \ 2 2/
;;  \  /
;; 3 \/ 1
;; 3 /\ 1
;;  /  \
;; / 0 0\

; angleSection(x:y atan(cadadr(bBox)/cadar(bBox)))

defun( angleBox (XY bBox) let((X0 Y0 X1 Y1 teta)
X0 = caar(bBox)     
Y0 = cadar(bBox) 
X1 = caadr(bBox)     
Y1 = cadadr(bBox)
teta=atan((Y1-Y0)/abs(X1-X0))
;printf("xy%L centr%L teta%L\n" XY centerBox(bBox) teta/acos(-1)*180)
;; angleSection(rodSubPoints(XY centerBox(bBox)) teta)
angleSectionr(rodSubPoints(XY centerBox(bBox)) teta)
))

;; angleBox('())
;; angleBox(0:0 '((0.0 -1.125) (0.5 0.0)))
;; angleBox(0.5:-1.125 '((0.0 -1.125) (0.5 0.0)))

____

If you're trying to find the orientation of the labels, then if the labels are "attached" to the pin figure, you can do this:

cv=geGetEditCellView() ; or whatever you need to get hold of the symbol cellView
term=dbFindTermByName(cv "VSS") ; I'm looking for a terminal called VSS
foreach(pin term~>pins
  foreach(fig pin~>figs  ; typically only 1 figure per pin
    foreach(child fig~>children
      when(child~>objType=="label"
        printf("Label %L has orientation %s\n" child~>theLabel child~>orient)
      )
    )
  )
)

So for example, one symbol I tried this on:

Label "VSS" has orientation R270
Label "cdsTerm(\"VSS\")" has orientation R0

Regards,

Andrew.