[OpenLayers-Users] integer overflow while drawing vectors, help!

[BrainDrain]

any suggestions?

BrainDrain wrote:
> 
> HI
> I use OL with mapserver
> my output projection is
> "+proj=tmerc +lat_0=48.70975 +lon_0=44.51205 +k=1.000000 +x_0=0 +y_0=0
> +ellps=krass +towgs84=23.92,-141.27,-80.9,0,0,0,0 +units=m +no_defs"
> this produces map images in real world units (meters)
> (reprojection from input local coord. sys "+proj=tmerc +lat_0=0 +lon_0=45
> +k=1.000000 +x_0=0 +y_0=0 +ellps=krass
> +towgs84=23.92,-141.27,-80.9,0,0,0,0 +units=mm +no_defs"), I need this to
> combine my local web map with google map layer in OL. But using this
> output projection I have integer coords calc overflow during drawing
> operations (in some scales/resolutions) in vml.js, for. ex. here
> drawCircle:
> node.style.left = (geometry.x /resolution).toFixed() - radius;//becomes
> invalid
> node.style.top = (geometry.y /resolution).toFixed() - radius;//or here
> I can change outp. proj to another, but how could I then correlate my
> Mapserver map image to match google layer data for my locale? Could I
> perfom on the fly reprojection using just OL routines (in co-operation
> with proj4js)? Is It REALLY possible? or some other advices to solve my
> problem...
> THANK YOU VERY, VERY MUCH
> "x_0=-20000 +y_0=5000000" in out. proj. fixes problems but this produces
> "wrong" coords...
> 
> 

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