Hi Don,
The algorithm that you sent me which calculates the intersection point
of the line and the circle requires a distance in radians for the radius
of the circle. What I have is a fixed 20 pixel (width and height) circle
which I need to know the radius in radians to pass to the
pointAtDistanceBetweenPoints method. That is why I need to convert from
pixels to radians based on the current projection settings.
Tony Vasile
Senior Software Engineer
CSC
Level 3B, 26 Talavera Road Macquarie Park NSW 2113 Australia
GBS | p: +61 2 9034 2404 | f: +61 2 9034 2404 | avasile_at_csc.com |
www.csc.com
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Don Dietrick <dietrick_at_bbn.com>
02/10/2009 06:59 AM
To
Tony Vasile <avasile_at_csc.com.au>
cc
openmap-users_at_bbn.com
Subject
Re: [OpenMap Users] Re: Graphics object to draw
Hi Tony,
I'm not sure what you mean by radians in the projected world if you
aren't talking about angles. You can't have a fixed size circle defined
with a radian-based radius. Or are you looking for an arc, or wedge?
- Don
Tony Vasile wrote:
>
> So I have my shape with the line drawn to the circle and the lines
> sticking out of it but I want to have a fixed size circle so I created
> with OMCircle(lat, lon, 20, 20) so I get a 20 pixel circle. Now is
> there any way to go from the radius in pixels to a value in radians. I
> assume I need something from the projection which converts between x/y
> values and radians in the projected world.
>
> Tony Vasile
> Senior Software Engineer
> CSC
>
> Level 3B, 26 Talavera Road Macquarie Park NSW 2113 Australia
> GBS | p: +61 2 9034 2404 | f: +61 2 9034 2404 | avasile_at_csc.com |
> www.csc.com
>
>
> Please consider the environment before printing this e-mail.
>
> CSC - This is a private message. If you are not the intended
> recipient, please delete without copying and kindly advise us by
> e-mail of the mistake in delivery. Note: Regardless of content, this
> e-mail shall not operate to bind CSC to any order or other contract
> unless pursuant to explicit written agreement or government initiative
> expressly permitting the use of e-mail for such purpose - CSC
> Australia Pty Limited; Registered Office: 5B/26 Talavera Road,
> Macquarie Park NSW 2113 Australia; Incorporated in Australia. ACN: 008
> 476 944
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Received on Thu Oct 01 2009 - 20:58:18 EDT