Skill code for getting coordinates of both ends of instances

Hi Varun,

What do you mean by "one end" or "other end"? The code have shown is printing the location of the origin of the instance and the bounding box of the instance (i.e. the lower left and upper right coordinates of the extent of the instance). There is no "end" of an instance, so I don't know what you mean.

When you place an instance, you give the coordinates (the "xy") of where you want 0,0 inside the instance master to be placed.

So please clarify what you're after here. Maybe with pictures...

Regards,

Andrew.

Hi Andrew

My question is if I already have one resistor instance in schematic and I will use command like inst~>xy, it will give me value like (0.625  0.312) which are XY coordinates of only one point of resistor. What about other point means wire connects from 2 ends of resistor. I have one end coordinate how to get of another end?

Hope it is clear now.

Regards

Varun 

Hi Varun,

As I explained, the ~>xy is the coordinate of where the origin of the resistor instance is placed. Whilst it might coincide with a pin on the resistor, it could also be anywhere - it could be in the middle of the symbol, say. So there is no guarantee that the ~>xy would be useful.

If you are trying to locate the coordinates of the pins on the instance, then typically you'd do something like this:

procedure(CCFgetPinCoordinates(inst)
  foreach(mapcar instTerm inst~>instTerms
    list(instTerm~>name
      dbTransformPoint(centerBox(car(instTerm~>term~>pins)~>fig~>bBox) inst~>transform)
    )
  )
)

This will return a list of lists, where each sublist is the name of the terminal and the coordinate of where the centre of the pin is.

Regards,

Andrew.

Hi Andrew,

I am trying to use the same code for finding the coordinates of all the four terminals of a mosfet(to be able to draw wire through it). But dbTransformPoint function is throwing an error mentioned below.

a=geGetSelSet()

foreach(mapcar instTerm a~>instTerms
list(instTerm~>name
dbTransformPoint(centerBox(caar(instTerm~>term~>pins)~>fig~>bBox) a~>transform)
)
)
*Error* dbTransformPoint: Invalid transform - (((1.0 1.0) "R0" 1.0))
<<< Stack Trace >>>
dbTransformPoint(centerBox(((&~>fig)~>bBox)) (a~>transform))
list((instTerm~>name) dbTransformPoint(centerBox((&~>bBox)) (a~>transform)))
mapcar(lambda((instTerm) list((instTerm~>name) dbTransformPoint(& &))) (a~>instTerms)

Please let me know how to resolve this issue.

Thanks 
Utkarsh

Looks like the variable "a" is a list. You'll need to take the car of the list - car(a)~>transform, or car(a~>transform)

Hi dmay

Thanks for the reply, with a little further modification I am able to get the coordinates of all 4 terminals on the instance.

Regards
Utkarsh