[Gambas-user] Coordinate system in Gambas Graphics
Tchekov.Net
emil at ...1913...
Fri Dec 5 16:25:43 CET 2008
I think there are too many possibilities available, so it must be leaved to
the programmer to choose which one to use and how to implement - Carthesian,
Polar, 3D and also some more exotical... So it is impossible to implement
all of them in a programming language. Pixels as expression of physical
output device (monitor or printer - with may be additional info about the
DPI resolution) are enough to produce reasonable scaled output - image or
graph or function plot or whatsoever...
wish you many success in your work
Emil
-----Ursprüngliche Nachricht-----
Von: Charles Capaday [mailto:Charles.Capaday at ...2023...]
Gesendet: Freitag, 5. Dezember 2008 16:00
An: mailing list for gambas users
Betreff: Re: [Gambas-user] Coordinate system in Gambas Graphics
Thanks draw.point(x,y) is in pixels, not coordinate values of ones
coordinate system, anyway Benoit answered the question there are no commands
for coordinate translation and one has to do it oneself, which is not hard,
je vous remercie!
Chee
rs,
Dr. Charles Capaday
Professor & Director
Brain and Movement Lab.
Dept. of Anatomy & Physiology
Faculty of Medicine, Laval University
http://www.brainandmovementlab.org/
Mailing address:
CRULRG F-6500
Hopital Robert-Giffard
2601 de la Canardiere, Beauport, QC
G1J 2G3 Canada
Tel: +418-663-5747 (Sec.)
+418-663-5000 ext. 6736 (Off.)
+418-663-5000 ext. 6877 (Lab.)
Fax: +418-663-8756
> -----Original Message-----
> From: Fabien Bodard [mailto:gambas.fr at ...626...]
> Sent: 5 décembre 2008 09:22
> To: mailing list for gambas users
> Subject: Re: [Gambas-user] Coordinate system in Gambas Graphics
>
> http://gambasdoc.org/help/comp/gb.qt/draw
>
>
> Draw.begin(drawingarea1)
>
> draw.point(x,y)
>
>
> draw.end
>
>
>
> is it that ???
>
>
>
>
>
>
> 2008/12/4 Charles Capaday <Charles.Capaday at ...2023...>:
> > Thanks, this would be a nice feature indeed, however I was
> not looking for a component as such. Simply I asked whether
> the language has commands for mapping pixel values to x-y
> coordinate values, these where part of DOS Basic Compiler 7
> for example and in VB as well I am pretty sure...
> >
> >
>
> > Cheers,
> >
> >
> > Dr. Charles Capaday
> > Professor & Director
> > Brain and Movement Lab.
> > Dept. of Anatomy & Physiology
> > Faculty of Medicine, Laval University
> > http://www.brainandmovementlab.org/
> >
> > Mailing address:
> > CRULRG F-6500
> > Hopital Robert-Giffard
> > 2601 de la Canardiere, Beauport, QC
> > G1J 2G3 Canada
> >
> > Tel: +418-663-5747 (Sec.)
> > +418-663-5000 ext. 6736 (Off.)
> > +418-663-5000 ext. 6877 (Lab.)
> > Fax: +418-663-8756
> >
> >
> >> -----Original Message-----
> >> From: Fabien Bodard [mailto:gambas.fr at ...626...]
> >> Sent: 4 décembre 2008 15:10
> >> To: richard terry; mailing list for gambas users
> >> Subject: Re: [Gambas-user] Coordinate system in Gambas Graphics
> >>
> >> i'm currently working on it, and made richard's wich true
> >>
> >>
> >> 2008/12/3 richard terry <rterry at ...1946...>:
> >> > On Thu, 4 Dec 2008 05:05:22 am Charles Capaday wrote:
> >> > Fabians chart component may or may not help.
> >> >
> >> > I'll mail you some piccies of what it can do off list.
> >> >
> >> > Regards
> >> >
> >> > Richard
> >> >
> >> >> I'm interested in developing a graph object in Gambas to
> >> plot points,
> >> >> curves etc. Are there language statements for coordinate
> >> >> transformations such as to make, for example, the pixel
> >> locations of
> >> >> a rectangle into x,y coordinate values?
> >> >>
> >> >>
> >> >> Cheers,
> >> >>
> >> >>
> >> >> Dr. Charles Capaday
> >> >> Professor & Director
> >> >> Brain and Movement Lab.
> >> >> Dept. of Anatomy & Physiology
> >> >> Faculty of Medicine, Laval University
> >> >> http://www.brainandmovementlab.org/
> >> >>
> >> >> Mailing address:
> >> >> CRULRG F-6500
> >> >> Hopital Robert-Giffard
> >> >> 2601 de la Canardiere, Beauport, QC G1J 2G3 Canada
> >> >>
> >> >> Tel: +418-663-5747 (Sec.)
> >> >> +418-663-5000 ext. 6736 (Off.)
> >> >> +418-663-5000 ext. 6877 (Lab.)
> >> >> Fax: +418-663-8756
> >> >>
> >> >>
> >>
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