Dramatic slowdown while resizing images by script

Alejandro Tejada capellan2000 at gmail.com
Tue Apr 8 19:50:55 EDT 2014


Hi All,

Please, review this new bug report:
http://quality.runrev.com/show_bug.cgi?id=12148
Add your comments and demonstration stacks to
this report.

Created attachment 4113 [details]
Infinite Zoom 2014.livecode
(Stack with images that zoom in or zoom out on mousedown)

1. Download the zipped sample stack

2. Open the stack in LiveCode 6.6

3. The stack opens in full screen. Using the keys alt-tab bring to front the
   LiveCode menu

4. Check the card script, before running.

5. To run the infinite zoom effect, click and hold down the mouse pointer
   near the left side of the card (zoom in) or
   near the right side of the card (zoom out)

6. Notice how the effect of resizing the images is slow and moves
   step by step.

7. Notice the faint line in the border of every image, barely visible.
   This border effectively breaks the illusion of a single continuous
   and infinite image.

8. Follow the previous steps using LiveCode 6.5.2
   The stack runs perfectly. There is no trace of these
   faint lines in image borders.

9. These marked differences in image processing speed was noticed
   by Kenji Kojima in this message:
   http://lists.runrev.com/pipermail/use-livecode/2014-March/199672.html

Have a nice day!

Al




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