MapXL / route-me

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Pan does not use cached tile until map stops on 570 #121

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago
570 introduced using low resolution tiles when zooming instead of blank or 
background image.

This is very nice, but causes the following problems:

1. the tiles are displayed from the top down instead from the bottom up. If a 
high resolution tile is 
present on the cache, there is no reason to download the low resolution tile 
until zoom out is made. 
Try to pan. and see that instead of loading the right resolution, all 
resolution are downloaded one 
by one and displayed on top of each other. this causes slow response, as well 
as a less nice pan.

2. decceleration is impaired: the map does not move smoothly.

Original issue reported on code.google.com by y...@amudanan.com on 20 Oct 2009 at 10:40

GoogleCodeExporter commented 8 years ago
more details: 

This (and the notes above) apply also to 576. the moveToLatLong method is very 
slow, compared to 0.5.

Original comment by y...@amudanan.com on 26 Oct 2009 at 6:04

GoogleCodeExporter commented 8 years ago
I think you mean r571 and not 570 ?
r571 was reverted because of performance issues and bugs like this one.

Original comment by vladimir...@gmail.com on 29 Oct 2009 at 11:08