How to undo ruler?

hi guys,

 im able to draw the ruler and clear the last ruler base on the script from dmay. user can draw the ruler and clear the ruler by a bindkey, without calling the function again. the problem is, because of the enter function, it would not be able to show the length of ruler during drawing. it only shows the length when user has finished entering points.

any idea on how to show the length while drawing by enter function?

thanks!

kevin

I don't know of a way to do this. The only dynamic ruler I know of is leHiCreateRuler. This is an enterFunction provided by Cadence that doesn't allow you to undo previous rulers. Thus I provided the above enterFunction to overcome the undo limitation but this loses the dynamic ruler capability. I don't know of any way to get two enterFunctions to run at the same time. So you can either run one or the other, but not both.

This request falls into the Cadence R&D court as an enhancement.

Derek

 Hi Derek, Kevin and How,

In the soon-to-be-arriving IC614 release there are many enhancements to the ruler capabilities, such as the ability to draw and then remove specific rulers.  Since this is an in-built capability, it will behave similarly to the existing ruler in the way that you can see the ruler and tick marks and sizes while it is being drawn (which you don't see if you are using the enterLine enter function).  The ruler function will also have built in "smarts" so that itcan guess if you are measuring from edge to edge, corner to corner etc. based on ruler direction and initial points.  It will use, I believe, the gravity aperture as the search window for the point and can be made to "snap" to point types (e.g. center, edge, vertex).

Hopefully the new capabilities will address many, if not all, of the concerns that layout designers have about rulers.

Regards,

Lawrence.

You can easily setup ruler snapping in 5.1.41. We have done with the code below. The bindkeys I defined allow you to start and stop the ruler with the middle mouse button and it will snap to edges within the aperture defined on the Layout Editor Options form.

procedure(mySnappingRuler()
  let((gravity infix depth type bouncex bouncey rptVar)
    if(hiGetCurrentCmd(hiGetCurrentWindow()) == "Ruler" then
        mouseAddPt()
    else
        infix   = hiGetCIWindow()->infix
        gravity = envGetVal("layout" "gravityOn")
        depth   = envGetVal("layout" "gravityDepth")
        type    = envGetVal("layout" "gravityType")
        bouncex = envGetVal("layout" "gravityBounceX")
        bouncey = envGetVal("layout" "gravityBounceY")
        envSetVal("layout" "gravityOn"      'boolean t)
        envSetVal("layout" "gravityDepth"   'int     20)
        envSetVal("layout" "gravityType"    'string  "edge")
        envSetVal("layout" "gravityBounceX" 'float   0)
        envSetVal("layout" "gravityBounceY" 'float   0)
        hiGetCIWindow()->infix = t
        rptVar=envGetVal("layout" "modalCommands")
        envSetVal("layout" "modalCommands" 'boolean nil)
        leHiCreateRuler()
        envSetVal("layout" "modalCommands" 'boolean rptVar)
        envSetVal("layout" "gravityOn"      'boolean gravity)
        envSetVal("layout" "gravityDepth"   'int     depth)
        envSetVal("layout" "gravityType"    'string  type)
        envSetVal("layout" "gravityBounceX" 'float   bouncex)
        envSetVal("layout" "gravityBounceY" 'float   bouncey)
        hiGetCIWindow()->infix = infix
    )
  ) ;let
) ;proc

hiSetBindKey("Layout" "<Btn2Down>" "mySnappingRuler()")
hiSetBindKey("Layout" "<Btn2Down> EF" "mySnappingRuler()")

You can define the aperture per user using:
envSetVal("layout" "gravityAperture" 'float 0.5)

Derek