[Gambas-user] is there an example for generating curves

[Julio Sanchez]

rolf:

Here's an example of drawing Bezier curves

http://jsbsan.blogspot.com.es/2014/07/dibujando-una-curva-bezier-de-mas-de-3.html


Regards,

Julio

2015-01-12 14:02 GMT+01:00 Fabien Bodard <gambas.fr at ...626...>:

> Better than words, this is a demo !
>
> 2015-01-12 12:22 GMT+01:00 Fabien Bodard <gambas.fr at ...626...>:
> > Well.. you need two things in fact . first you can use an array of point
> :
> >
> > Private $aPoints as new Point[]
> >
> >
> > Then you add in real time your points :
> >
> > $apoint.add(point(x,y))
> > and query the redraw of the drawing area
> >
> > MyDA.refresh
> >
> >
> > Public sub MyDA_Draw()
> >
> >   dim i as integer
> >
> > for i=0 to $aPoints.max -1 step 2
> >
> >   draw.line($apoint[i].x$apoint[i].y,$apoint[i+1].x,$apoint[i+1].y)
> >
> > next
> >
> > end
> >
> >
> > You ca doing the same fr the second drawing area and of ourse a second
> > point array.
> >
> > Don't forget that in gambas many of the control don't store datas,
> > they are just viewer.
> > You need some array to store datas and then use them to draw.
> >
> > Each time drawing area is refreshing you need to redraw the full curve
> > .(and all things to draw is the view)
> >
> > Regards,
> >
> > Fabien Bodard
> >
> > 2015-01-12 10:06 GMT+01:00 rolf <rolf.frogs at ...221...>:
> >> Hi,
> >>
> >> I can manage to draw curves of measured values, when they arrive i.e.
> the
> >> curve has to be extendet up to 50 times. And a second measurement
> session
> >> should be drawn in a second drawarea.
> >>
> >> The gambas documentation about drawarea is not really helpfull in this
> case.
> >>
> >> Is there an example where I can see how to handle two drawing areas and
> add
> >> points or lines in them (I think I have to use the cache, but can't see
> what
> >> is drawn).
> >>
> >> Many thanks for any help
> >> Rolf
> >>
> >>
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> >
> >
> > --
> > Fabien Bodard
>
>
>
> --
> Fabien Bodard
>
>
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> GigeNET is offering a free month of service with a new server in Ashburn.
> Choose from 2 high performing configs, both with 100TB of bandwidth.
> Higher redundancy.Lower latency.Increased capacity.Completely compliant.
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