28 Apr
2015
28 Apr
'15
12:34 a.m.
Hi,
it seems that last control point of a bezier line is off.
Here is a comparative view of RTBezierLine (black line) and bezier line
done with SVG (red line). Notice how the bottom half is flatlined and
doesn't match up.
And the code (based on RTRoassalExample>>exampleBezierCurve):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| v e1 e2 l s p1 p2 path svg|
v := RTView new.
e1 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 translateBy: -150 @ 150.
p1 := RTBox element.
p2 := RTBox element.
p1 translateTo: (e2 position x + e1 position x / 2) @ e1 position y.
p2 translateTo: (e2 position x + e1 position x / 2) @ e2 position y.
v add: p1.
v add: p2.
s := RTBezierLine new.
s color: Color black.
s controllingElements: (Array with: p1 with: p2).
l := s edgeFrom: e1 to: e2.
v add: e1.
v add: e2.
v add: l.
path := 'M -150 150 Q -75 150 -75 75 Q -75 0 0 0'.
svg := RTSVGPath new borderColor: Color red; path: path; element.
v add: svg.
^ v
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Peter
28 Apr
28 Apr
5:32 p.m.
Hi Peter!
This is a problem we have had for a while. I did not think about comparing it with the
path.
We will rewrite RTBezierLine to use TRSVGPath
We will let you know
Cheers,
Alexandre
--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
On Apr 27, 2015, at 6:34 PM, Peter Uhnák
<i.uhnak(a)gmail.com> wrote:
Hi,
it seems that last control point of a bezier line is off.
Here is a comparative view of RTBezierLine (black line) and bezier line done with SVG
(red line). Notice how the bottom half is flatlined and doesn't match up.
<2015-04-28_00:29:16.png>
And the code (based on RTRoassalExample>>exampleBezierCurve):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| v e1 e2 l s p1 p2 path svg|
v := RTView new.
e1 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 translateBy: -150 @ 150.
p1 := RTBox element.
p2 := RTBox element.
p1 translateTo: (e2 position x + e1 position x / 2) @ e1 position y.
p2 translateTo: (e2 position x + e1 position x / 2) @ e2 position y.
v add: p1.
v add: p2.
s := RTBezierLine new.
s color: Color black.
s controllingElements: (Array with: p1 with: p2).
l := s edgeFrom: e1 to: e2.
v add: e1.
v add: e2.
v add: l.
path := 'M -150 150 Q -75 150 -75 75 Q -75 0 0 0'.
svg := RTSVGPath new borderColor: Color red; path: path; element.
v add: svg.
^ v
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Peter
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4 May
4 May
10:21 p.m.
Hi Peter,
the RTBezierLine has been fixed ! Load the last Roassal (with Trachel) and
try again your code.
(ps: There is also the RTSVGPathBezierLine that works the same but use a
generated SVG string to create the path.)
This post raised an interesting problem: the RTBezierLine is actually
creating a serie of quadratic bezier lines. If you have 2 points of control
between two points you will have two quadratic bezier lines instead of a
real cubic
bezier line. If someone is interested in this I think it could be possible
with some work to add this option.
thanks,
Pierre
2015-04-28 12:32 GMT-03:00 Alexandre Bergel <alexandre.bergel(a)me.com>om>:
Hi Peter!
This is a problem we have had for a while. I did not think about comparing
it with the path.
We will rewrite RTBezierLine to use TRSVGPath
We will let you know
Cheers,
Alexandre
--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
On Apr 27, 2015, at 6:34 PM, Peter Uhnák <i.uhnak(a)gmail.com> wrote:
Hi,
it seems that last control point of a bezier line is off.
Here is a comparative view of RTBezierLine (black line) and bezier line
done with SVG (red line). Notice how the bottom half is flatlined and
doesn't match up.
<2015-04-28_00:29:16.png>
And the code (based on RTRoassalExample>>exampleBezierCurve):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| v e1 e2 l s p1 p2 path svg|
v := RTView new.
e1 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 translateBy: -150 @ 150.
p1 := RTBox element.
p2 := RTBox element.
p1 translateTo: (e2 position x + e1 position x / 2) @ e1 position y.
p2 translateTo: (e2 position x + e1 position x / 2) @ e2 position y.
v add: p1.
v add: p2.
s := RTBezierLine new.
s color: Color black.
s controllingElements: (Array with: p1 with: p2).
l := s edgeFrom: e1 to: e2.
v add: e1.
v add: e2.
v add: l.
path := 'M -150 150 Q -75 150 -75 75 Q -75 0 0 0'.
svg := RTSVGPath new borderColor: Color red; path: path; element.
v add: svg.
^ v
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Peter
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9 May
9 May
2:59 p.m.
Le 28/4/15 17:32, Alexandre Bergel a écrit :
Hi Peter!
This is a problem we have had for a while. I did not think about
comparing it with the path.
We will rewrite RTBezierLine to use TRSVGPath
How the bezier is computed for
TRSVGPath?
We will let you know
Cheers,
Alexandre
--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
On Apr 27, 2015, at 6:34 PM, Peter Uhnák
<i.uhnak(a)gmail.com
<mailto:i.uhnak@gmail.com>> wrote:
Hi,
it seems that last control point of a bezier line is off.
Here is a comparative view of RTBezierLine (black line) and bezier
line done with SVG (red line). Notice how the bottom half is
flatlined and doesn't match up.
<2015-04-28_00:29:16.png>
And the code (based on RTRoassalExample>>exampleBezierCurve):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| v e1 e2 l s p1 p2 path svg|
v := RTView new.
e1 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 translateBy: -150 @ 150.
p1 := RTBox element.
p2 := RTBox element.
p1 translateTo: (e2 position x + e1 position x / 2) @ e1 position y.
p2 translateTo: (e2 position x + e1 position x / 2) @ e2 position y.
v add: p1.
v add: p2.
s := RTBezierLine new.
s color: Color black.
s controllingElements: (Array with: p1 with: p2).
l := s edgeFrom: e1 to: e2.
v add: e1.
v add: e2.
v add: l.
path := 'M -150 150 Q -75 150 -75 75 Q -75 0 0 0'.
svg := RTSVGPath new borderColor: Color red; path: path; element.
v add: svg.
^ v
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Peter
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7:29 p.m.
Pierre fixed it nicely. Was a mistake I did.
The class TRSVGPath makes direct call to Athens. So Athens does all the job.
Cheers,
Alexandre
On May 9, 2015, at 8:59 AM, stepharo
<stepharo(a)free.fr> wrote:
Le 28/4/15 17:32, Alexandre Bergel a écrit :
--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
Hi Peter!
This is a problem we have had for a while. I did not think about comparing it with the
path.
We will rewrite RTBezierLine to use TRSVGPath
How the bezier is computed for
TRSVGPath?
We will let you know
Cheers,
Alexandre
--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev On Apr 27, 2015, at 6:34 PM, Peter Uhnák
<i.uhnak(a)gmail.com> wrote:
Hi,
it seems that last control point of a bezier line is off.
Here is a comparative view of RTBezierLine (black line) and bezier line done with SVG
(red line). Notice how the bottom half is flatlined and doesn't match up.
<2015-04-28_00:29:16.png>
And the code (based on RTRoassalExample>>exampleBezierCurve):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| v e1 e2 l s p1 p2 path svg|
v := RTView new.
e1 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 translateBy: -150 @ 150.
p1 := RTBox element.
p2 := RTBox element.
p1 translateTo: (e2 position x + e1 position x / 2) @ e1 position y.
p2 translateTo: (e2 position x + e1 position x / 2) @ e2 position y.
v add: p1.
v add: p2.
s := RTBezierLine new.
s color: Color black.
s controllingElements: (Array with: p1 with: p2).
l := s edgeFrom: e1 to: e2.
v add: e1.
v add: e2.
v add: l.
path := 'M -150 150 Q -75 150 -75 75 Q -75 0 0 0'.
svg := RTSVGPath new borderColor: Color red; path: path; element.
v add: svg.
^ v
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Peter
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
_______________________________________________
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Moose-dev(a)iam.unibe.ch
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7:29 p.m.
Thanks Pierre to having fixed this!
Looks much better!
Peter, let us know whether you see other problem with the Bezier.
Alexandre
On Apr 27, 2015, at 6:34 PM, Peter Uhnák
<i.uhnak(a)gmail.com> wrote:
Hi,
it seems that last control point of a bezier line is off.
Here is a comparative view of RTBezierLine (black line) and bezier line done with SVG
(red line). Notice how the bottom half is flatlined and doesn't match up.
<2015-04-28_00:29:16.png>
And the code (based on RTRoassalExample>>exampleBezierCurve):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| v e1 e2 l s p1 p2 path svg|
v := RTView new.
e1 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 := (RTEllipse new size: 15; color: (Color blue alpha: 0.4)) element.
e2 translateBy: -150 @ 150.
p1 := RTBox element.
p2 := RTBox element.
p1 translateTo: (e2 position x + e1 position x / 2) @ e1 position y.
p2 translateTo: (e2 position x + e1 position x / 2) @ e2 position y.
v add: p1.
v add: p2.
s := RTBezierLine new.
s color: Color black.
s controllingElements: (Array with: p1 with: p2).
l := s edgeFrom: e1 to: e2.
v add: e1.
v add: e2.
v add: l.
path := 'M -150 150 Q -75 150 -75 75 Q -75 0 0 0'.
svg := RTSVGPath new borderColor: Color red; path: path; element.
v add: svg.
^ v
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Peter
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
3523
days inactive
3535
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5 comments
4 participants
participants (4)
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Alexandre Bergel -
Peter Uhnák -
Pierre CHANSON -
stepharo