Re: Moving objects and incremental redisplay

• To: clim@BBN.COM
• Subject: Re: Moving objects and incremental redisplay
• From: Nichael Cramer <ncramer@BBN.COM>
• Date: Thu, 30 Sep 93 11:20:33 EDT
• Cc: da@mmm.com, samundy@mmm.com

>>For example, in order to move an object you simply:
>>
>> 1) compute the region of the object
>> 2) move the object to its new position
>> 3) replay the output records overlapping the objects old region
>> 4) replay the output records overlapping the new region
>
>Does #3 imply that a user needs to record overlapped objects
>in order to to replay those records after objects are moved?

No.  What you probably want is something like the generic function:

  MAP-OVER-OUTPUT-RECORDS-OVERLAPPING-REGION 

Nichael

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