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snapping to edges when invoking an enterBox

Adhil

hey!!!

how can you make an enterBox cursor to snap to edges, i am trying to automatically place vias on an intersection after i draw an enterbox covering that intersection.

the script is working properly,however, it would be more convenient if the enterBox cursor could automatically snap to edges.

 

Adhil

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  • dmay

    The easiest way to do this is to use the built-in snapping (or gravity) functions. Since not everyone has the same preferences for these, I would do the following:

    1. get the current settings for the user
    2. set the default gravity options for your command
    3. run your enter function
    4. reset the user's settings

                ;Get user settings
                gravity = envGetVal("layout" "gravityOn")
                depth   = envGetVal("layout" "gravityDepth")
                type    = envGetVal("layout" "gravityType")
                bouncex = envGetVal("layout" "gravityBounceX")
                bouncey = envGetVal("layout" "gravityBounceY")
                ;Set your commands preferences
                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)
                ;
                ; Do your stuff here
                enterBox ...
                ;
                ;Reset to the user's settings
                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)

    If your command errors out, you could end up changing the default gravity settings for the user (since the code doesn't made it to the reset step). To avoid this, you should probably wrap your command with errset to trap the error.

    errset(enterBox(...) t)

    Derek

Reply
  • dmay

    The easiest way to do this is to use the built-in snapping (or gravity) functions. Since not everyone has the same preferences for these, I would do the following:

    1. get the current settings for the user
    2. set the default gravity options for your command
    3. run your enter function
    4. reset the user's settings

                ;Get user settings
                gravity = envGetVal("layout" "gravityOn")
                depth   = envGetVal("layout" "gravityDepth")
                type    = envGetVal("layout" "gravityType")
                bouncex = envGetVal("layout" "gravityBounceX")
                bouncey = envGetVal("layout" "gravityBounceY")
                ;Set your commands preferences
                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)
                ;
                ; Do your stuff here
                enterBox ...
                ;
                ;Reset to the user's settings
                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)

    If your command errors out, you could end up changing the default gravity settings for the user (since the code doesn't made it to the reset step). To avoid this, you should probably wrap your command with errset to trap the error.

    errset(enterBox(...) t)

    Derek

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