[mapserver-users] confusion about postgis bounding box -> valid map extent
Alex Rice
alex_rice at arc.to
Fri Aug 23 15:33:44 PDT 2002
On Friday, August 23, 2002, at 01:27 PM, Steve Lime wrote:
> In the C code the extent will be adjusted for output image size.
Does it try to center the old extent in the new extent, or does
it do clipping and shifting?
> I've got all those written in C and javascript. Let me know what
> you'd like
> to see. Otherwise MapScript already has a method to fit a rectangle to
> a new window size. It's part of the rectObj class (of which
> extent is one)
> and is called fit. For example:
>
> $cellsize = $map->{extent}->fit($newwidth, $newheight);
I would love to see any javascript functions you have. It's a bit
easier to read then C for me.
> Already addressed in a generic way with the fit method.
OK I see. I guess what I am looking for is a way to do what the
zoomScale() php function does, except I will be starting with
georef coordinates not pixel coordinates.
Maybe after seeing some of your code it will all "click" for me!
Thanks,
Alex Rice <alex at mindlube.com>
Mindlube Software
http://www.mindlube.com/
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