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

[Fabien Bodard]

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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