# Giant BitmapData objects disappear?

**URL:** <https://forum.kirupa.com/t/giant-bitmapdata-objects-disappear/233407>\
**Category:** flash\
**Created:** [July 23, 2007, 7:08pm UTC](https://forum.kirupa.com/t/giant-bitmapdata-objects-disappear/233407 "2007-07-23T19:08:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rezmason](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/rezmason/32/30447_2.png) [@Rezmason](https://forum.kirupa.com/u/Rezmason)\
**Post date:** [July 23, 2007, 7:08pm UTC](https://forum.kirupa.com/t/giant-bitmapdata-objects-disappear/233407/1 "2007-07-23T19:08:52Z")

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Hey, folks. I’m making a zooming system a la Google Maps, and the thing that’s being zoomed is a Bitmap. And at a certain scale, the whole chalupa just vanishes. It reappears if I zoom out, but at a certain threshold, it simply stops rendering entirely. Why’s that happening? And if I want to validate the scale in my zooming function to prevent the user from zooming in too far, how do I know exactly when the Bitmap will vanish?