[Gambas-user] Drawing sector

[Fabien Bodard]

haaa vector ... what a great thing for great things ... but not for small
ones...

does it do the same with a smaller linewidth ?



2012/12/10 Jussi Lahtinen <jussi.lahtinen at ...626...>

> OK, makes sense.
> One tiny thing more...
>
> Draw.Foreground = Color.Black
> Draw.LineWidth = 3
> Draw.Circle(106, 106, 105)
>
> Draw.LineWidth = 1
> Draw.FillStyle = Fill.Solid
>
>
> 'this draws very narrow sector
>
> Draw.FillColor = Color.Black
> Draw.Circle(106, 106, 105, Rad(359), Rad(360))
>
>
> 'this draws little red cross at center point of the sector.
>
> Draw.Foreground = Color.Red
> Draw.Line(104, 106, 108, 106)
> Draw.Line(106, 104, 106, 108)
>
>
> However sector is off from center point.
> See attachment.
>
>
> Jussi
>
>
>
>
> On Sun, Dec 9, 2012 at 5:12 PM, Benoît Minisini <
> gambas at ...1...> wrote:
>
> > Le 07/12/2012 14:28, Jussi Lahtinen a écrit :
> > >> Fixed in revision #5415.
> > >>
> > >
> > > Something is still different from the original behaviour.
> > > I use same circle commands to draw pie chart and it still fails...
> > >
> > > Test output:
> > >
> > > Area num. 0: in rads; 0 to 0.89759700342775
> > > Area num. 1: in rads; 0.89759700342775 to 1.79519400685551
> > > Area num. 2: in rads; 1.79519400685551 to 2.69279101028326
> > > Area num. 3: in rads; 2.69279101028326 to 3.59038801371102
> > > Area num. 4: in rads; 3.59038801371102 to 4.48798501713877
> > > Area num. 5: in rads; 4.48798501713877 to 5.38558202056653
> > > Area num. 6: in rads; 5.38558202056653 to 6.28317902399428
> > > Area num. 7: in rads; 6.28317902399428 to 0
> > >
> > > It seems that drawing area 7 cover the whole chart.
> > > So it would be:
> > > Draw.Circle(106, 106, 105, 6.28317902399428, 0)
> > >
> > > 6.28317902399428 is same as Pi(2) or 360 degrees, which means start is
> > same
> > > as end.
> > >
> > > I think whole circle should be drawn with this:
> > > Draw.Circle(106, 106, 105, 0, 6.28317902399428)
> > >
> > > And this shouldn't draw anything:
> > > Draw.Circle(106, 106, 105, 6.28317902399428, 0)
> > >
> > >
> > > Jussi
> >
> > Actually the old Draw class was wrong, because you can draw a pie
> > clockwise (End > Start) or counter-clockwise (End < Start). So only
> > Start = End should not draw anything (or just a line between the center
> > and the point at the specified angle).
> >
> > --
> > Benoît Minisini
> >
> >
> >
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-- 
Fabien Bodard