canvasdraw-users — CD Discussion List

[Canvasdraw-users] CD 5.8 Released

[Antonio S. <sc...@te...>]

Hi All,

  The 5.8 version of the CD library has been released.

  We would like to highlight the following features:

- new CD_IUPDBUFFER and CD_IUPDBUFFERRGB drivers to simplify the creation
of a double buffer using a single canvas. They are necessary for the
upcoming IUP 3.11 version.
- FTGL font size fixed.

  You can find the complete list of changes and files for download at:

     http://www.tecgraf.puc-rio.br/cd/

Best Regards,
Antonio Scuri

[Canvasdraw-users] CD 5.7 Released

[Antonio S. <ant...@gm...>]

Hi All,

 

The 5.7 version of the CD library has been released.

 

We would like to highlight the following feature:

 

- support for UTF-8 strings in cdCanvasText using the canvas attribute
UTF8MODE for the GL, Win32, GDI+, GDK and Cairo drivers.

 

You can find the complete list of changes and files for download at:

 

 <http://www.tecgraf.puc-rio.br/cd/> http://www.tecgraf.puc-rio.br/cd/  

 

Best Regards,

Antonio Scuri

 

Re: [Canvasdraw-users] CD and VS 2013

[Antonio S. <ant...@gm...>]

  Hi,

  Thanks.

  Amazing how Microsoft can turn simple things into a mess. 

  But this is not just a compiler issue, it is an issue for Windows 8.1.
Reading this:

 
http://msdn.microsoft.com/en-us/library/windows/desktop/ms725491(v=vs.85).as
px

  I think that there are two things. First you patch can be used without the
ifdef and may completely replace the old code because VerifyVersionInfo
seems to be available since Windows 2000. Must check if it will compile with
older compilers.

  Second, independent from that code, to detect Windows 8.1 we will need to
do more than that. Will we?  Are you using Windows 8.1 Preview? Or just vc11
issue a warning?

Best,
Scuri 

> -----Original Message-----
> From: Michael [mailto:de...@m1...]
> Sent: quinta-feira, 4 de julho de 2013 06:21
> To: can...@li...
> Subject: [Canvasdraw-users] CD and VS 2013
> 
> Trying to build the CD with VS2013.
> Some version-helper functions was deprecated in new VS.
> Patch with workaround in attachments.
> Thanks)

[Canvasdraw-users] CD and VS 2013

[Michael <de...@m1...>]

Trying to build the CD with VS2013. 
Some version-helper functions was deprecated in new VS.
Patch with workaround in attachments.
Thanks) 		 	   		  

[Canvasdraw-users] CD 5.6.1 Released

[Antonio S. <ant...@gm...>]

  Hi All,
 
  The 5.6.1 version of the CD library has been released. This is just a bug
fix.
 
  You can find the list of changes and files for download at:

http://www.tecgraf.puc-rio.br/cd/ 

Best Regards,
Antonio Scuri

Re: [Canvasdraw-users] Problem drawing arcs in a path

[Peter C. <k9...@ya...>]

Hi

I have worked around the problem so I don't need to put you to the trouble of sending the DLLs - I'll wait for the next official release.

Thanks for fixing the bug.
Ken


----- Original Message -----
From: Antonio Scuri <ant...@gm...>
To: 'Peter Campbell' <k9...@ya...>; 'CD discussion list.' <can...@li...>
Cc: 
Sent: Wednesday, January 9, 2013 11:25:23 AM
Subject: RE: [Canvasdraw-users] Problem drawing arcs in a path

  Hi,

  There was a bug. It is now fixed and committed to CVS.

  If you want I can provide you with an updated set of DLLs.

Best,
Scuri

> -----Original Message-----
> From: Peter Campbell [mailto:k9...@ya...]
> Sent: quarta-feira, 2 de janeiro de 2013 16:05
> To: can...@li...
> Subject: [Canvasdraw-users] Problem drawing arcs in a path
> 
> Hi,
> 
> I'm using CD with Lua 5.1 on Windows XP, and I've noticed a problem with
the
> cd.PATH_ARC option in the canvas:PathSet() function, when the canvas
origin is
> changed using canvas:Origin(). An example follows to demonstrate the
issue.
> When the scrollbars are moved the shape drawn by the path functions should
> only move, but it is distorted as well.
> 
> Only cd.PATH_ARC seems to have this problem, cd.PATH_CURVETO works OK.
> 
> Thanks,
> Ken
> 
> require "iuplua"
> require "cdlua"
> require "iupluacd"
> 
> -- Lua 5.1
> -- Iup 3.7
> --  Cd 5.6
> 
> demo = iup.canvas{scrollbar="YES"}
> demo.map_cb = function (self)
>   self.canvas = cd.CreateCanvas(cd.IUP, self) end
> 
> demo.action = function (self)
>   self.canvas:Activate()
>   self:draw()
> end
> 
> demo.scroll_cb = function (self, op, posx, posy)
>   self.canvas:Origin(-60*posx, 60*posy)
>   self:draw()
> end
> 
> demo.draw = function (self)
>   local x, y, w, d = 100, 60, 200, 100
>   local cv = self.canvas
>   local r = d/2
> 
>   cv:Clear()
>   cv:SetForeground(cd.RED)
>   cv:Rect(x-1, x+w+1, y-1, y+d+1)
>   cv:SetForeground(cd.BLUE)
> 
>   cv:Begin(cd.PATH)
>   cv:PathSet(cd.PATH_MOVETO); cv:Vertex(x+r, y)
>   cv:PathSet(cd.PATH_ARC); cv:Vertex(x+r, y+r); cv:Vertex(d, d);
> cv:Vertex(270000, 90000)
>   cv:PathSet(cd.PATH_LINETO); cv:Vertex(x+w-r, y+d)
>   cv:PathSet(cd.PATH_ARC); cv:Vertex(x+w-r, y+r); cv:Vertex(d, d);
> cv:Vertex(90000, -90000)
>   cv:PathSet(cd.PATH_CLOSE)
>   cv:PathSet(cd.PATH_STROKE)
>   cv:End()
> end
> 
> dlg = iup.dialog{demo, title="Canvas Origin Problem", size="300x200"}
> dlg:show()
> iup.MainLoop ()
> 
> 
>
----------------------------------------------------------------------------
--
> Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery
and much
> more. Keep your Java skills current with LearnJavaNow -
> 200+ hours of step-by-step video tutorials by Java experts.
> SALE $49.99 this month only -- learn more at:
> http://p.sf.net/sfu/learnmore_122612
> _______________________________________________
> Canvasdraw-users mailing list
> Can...@li...
> https://lists.sourceforge.net/lists/listinfo/canvasdraw-users

Re: [Canvasdraw-users] Problem drawing arcs in a path

[Antonio S. <ant...@gm...>]

  Hi,

  There was a bug. It is now fixed and committed to CVS.

  If you want I can provide you with an updated set of DLLs.

Best,
Scuri

> -----Original Message-----
> From: Peter Campbell [mailto:k9...@ya...]
> Sent: quarta-feira, 2 de janeiro de 2013 16:05
> To: can...@li...
> Subject: [Canvasdraw-users] Problem drawing arcs in a path
> 
> Hi,
> 
> I'm using CD with Lua 5.1 on Windows XP, and I've noticed a problem with
the
> cd.PATH_ARC option in the canvas:PathSet() function, when the canvas
origin is
> changed using canvas:Origin(). An example follows to demonstrate the
issue.
> When the scrollbars are moved the shape drawn by the path functions should
> only move, but it is distorted as well.
> 
> Only cd.PATH_ARC seems to have this problem, cd.PATH_CURVETO works OK.
> 
> Thanks,
> Ken
> 
> require "iuplua"
> require "cdlua"
> require "iupluacd"
> 
> -- Lua 5.1
> -- Iup 3.7
> --  Cd 5.6
> 
> demo = iup.canvas{scrollbar="YES"}
> demo.map_cb = function (self)
>   self.canvas = cd.CreateCanvas(cd.IUP, self) end
> 
> demo.action = function (self)
>   self.canvas:Activate()
>   self:draw()
> end
> 
> demo.scroll_cb = function (self, op, posx, posy)
>   self.canvas:Origin(-60*posx, 60*posy)
>   self:draw()
> end
> 
> demo.draw = function (self)
>   local x, y, w, d = 100, 60, 200, 100
>   local cv = self.canvas
>   local r = d/2
> 
>   cv:Clear()
>   cv:SetForeground(cd.RED)
>   cv:Rect(x-1, x+w+1, y-1, y+d+1)
>   cv:SetForeground(cd.BLUE)
> 
>   cv:Begin(cd.PATH)
>   cv:PathSet(cd.PATH_MOVETO); cv:Vertex(x+r, y)
>   cv:PathSet(cd.PATH_ARC); cv:Vertex(x+r, y+r); cv:Vertex(d, d);
> cv:Vertex(270000, 90000)
>   cv:PathSet(cd.PATH_LINETO); cv:Vertex(x+w-r, y+d)
>   cv:PathSet(cd.PATH_ARC); cv:Vertex(x+w-r, y+r); cv:Vertex(d, d);
> cv:Vertex(90000, -90000)
>   cv:PathSet(cd.PATH_CLOSE)
>   cv:PathSet(cd.PATH_STROKE)
>   cv:End()
> end
> 
> dlg = iup.dialog{demo, title="Canvas Origin Problem", size="300x200"}
> dlg:show()
> iup.MainLoop ()
> 
> 
>
----------------------------------------------------------------------------
--
> Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery
and much
> more. Keep your Java skills current with LearnJavaNow -
> 200+ hours of step-by-step video tutorials by Java experts.
> SALE $49.99 this month only -- learn more at:
> http://p.sf.net/sfu/learnmore_122612
> _______________________________________________
> Canvasdraw-users mailing list
> Can...@li...
> https://lists.sourceforge.net/lists/listinfo/canvasdraw-users

Re: [Canvasdraw-users] Problem drawing arcs in a path

[Antonio S. <ant...@gm...>]

  Hi,

  I'll make some tests here. Get back to you soon.

Best,
Scuri

> -----Original Message-----
> From: Peter Campbell [mailto:k9...@ya...]
> Sent: quarta-feira, 2 de janeiro de 2013 16:05
> To: can...@li...
> Subject: [Canvasdraw-users] Problem drawing arcs in a path
> 
> Hi,
> 
> I'm using CD with Lua 5.1 on Windows XP, and I've noticed a problem with
the
> cd.PATH_ARC option in the canvas:PathSet() function, when the canvas
origin is
> changed using canvas:Origin(). An example follows to demonstrate the
issue.
> When the scrollbars are moved the shape drawn by the path functions should
> only move, but it is distorted as well.
> 
> Only cd.PATH_ARC seems to have this problem, cd.PATH_CURVETO works OK.
> 
> Thanks,
> Ken
> 
> require "iuplua"
> require "cdlua"
> require "iupluacd"
> 
> -- Lua 5.1
> -- Iup 3.7
> --  Cd 5.6
> 
> demo = iup.canvas{scrollbar="YES"}
> demo.map_cb = function (self)
>   self.canvas = cd.CreateCanvas(cd.IUP, self) end
> 
> demo.action = function (self)
>   self.canvas:Activate()
>   self:draw()
> end
> 
> demo.scroll_cb = function (self, op, posx, posy)
>   self.canvas:Origin(-60*posx, 60*posy)
>   self:draw()
> end
> 
> demo.draw = function (self)
>   local x, y, w, d = 100, 60, 200, 100
>   local cv = self.canvas
>   local r = d/2
> 
>   cv:Clear()
>   cv:SetForeground(cd.RED)
>   cv:Rect(x-1, x+w+1, y-1, y+d+1)
>   cv:SetForeground(cd.BLUE)
> 
>   cv:Begin(cd.PATH)
>   cv:PathSet(cd.PATH_MOVETO); cv:Vertex(x+r, y)
>   cv:PathSet(cd.PATH_ARC); cv:Vertex(x+r, y+r); cv:Vertex(d, d);
> cv:Vertex(270000, 90000)
>   cv:PathSet(cd.PATH_LINETO); cv:Vertex(x+w-r, y+d)
>   cv:PathSet(cd.PATH_ARC); cv:Vertex(x+w-r, y+r); cv:Vertex(d, d);
> cv:Vertex(90000, -90000)
>   cv:PathSet(cd.PATH_CLOSE)
>   cv:PathSet(cd.PATH_STROKE)
>   cv:End()
> end
> 
> dlg = iup.dialog{demo, title="Canvas Origin Problem", size="300x200"}
> dlg:show()
> iup.MainLoop ()
> 
> 
>
----------------------------------------------------------------------------
--
> Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery
and much
> more. Keep your Java skills current with LearnJavaNow -
> 200+ hours of step-by-step video tutorials by Java experts.
> SALE $49.99 this month only -- learn more at:
> http://p.sf.net/sfu/learnmore_122612
> _______________________________________________
> Canvasdraw-users mailing list
> Can...@li...
> https://lists.sourceforge.net/lists/listinfo/canvasdraw-users

[Canvasdraw-users] Problem drawing arcs in a path

[Peter C. <k9...@ya...>]

Hi,

I'm using CD with Lua 5.1 on Windows XP, and I've noticed a problem with the cd.PATH_ARC
option in the canvas:PathSet() function, when the canvas origin is changed using
canvas:Origin(). An example follows to demonstrate the issue. When the scrollbars are moved
the shape drawn by the path functions should only move, but it is distorted as well.

Only cd.PATH_ARC seems to have this problem, cd.PATH_CURVETO works OK.

Thanks, 
Ken

require "iuplua"
require "cdlua"
require "iupluacd"

-- Lua 5.1
-- Iup 3.7
--  Cd 5.6

demo = iup.canvas{scrollbar="YES"}
demo.map_cb = function (self)
  self.canvas = cd.CreateCanvas(cd.IUP, self)
end

demo.action = function (self)
  self.canvas:Activate()
  self:draw()
end

demo.scroll_cb = function (self, op, posx, posy)
  self.canvas:Origin(-60*posx, 60*posy)
  self:draw()
end

demo.draw = function (self)
  local x, y, w, d = 100, 60, 200, 100
  local cv = self.canvas
  local r = d/2

  cv:Clear()
  cv:SetForeground(cd.RED)
  cv:Rect(x-1, x+w+1, y-1, y+d+1)
  cv:SetForeground(cd.BLUE)

  cv:Begin(cd.PATH)
  cv:PathSet(cd.PATH_MOVETO); cv:Vertex(x+r, y)
  cv:PathSet(cd.PATH_ARC); cv:Vertex(x+r, y+r); cv:Vertex(d, d); cv:Vertex(270000, 90000)
  cv:PathSet(cd.PATH_LINETO); cv:Vertex(x+w-r, y+d)
  cv:PathSet(cd.PATH_ARC); cv:Vertex(x+w-r, y+r); cv:Vertex(d, d); cv:Vertex(90000, -90000)
  cv:PathSet(cd.PATH_CLOSE)
  cv:PathSet(cd.PATH_STROKE)
  cv:End()
end

dlg = iup.dialog{demo, title="Canvas Origin Problem", size="300x200"}
dlg:show()
iup.MainLoop ()

[Canvasdraw-users] ANN: CD 5.5.1

[Antonio S. <ant...@gm...>]

Hi All,

The 5.5.1 version of the CD library has been released.

This is just a bug fix with the following:

- Fixed CD_DXF driver. It was generating filled polygons incompatible with
AutoCAD
- Fixed CD_GL driver initialization. Fixed function cdCanvasClear, and fixed
font size, in the same driver.
- Improved search for TrueType fonts. Now also look for fonts in the native
system using only the font name. On Linux the search is done using the lib
FontConfig. This reduces the need for variable CDDIR.

You can find the complete list of changes and files for download at:

http://www.tecgraf.puc-rio.br/cd/ 

Best Regards,
Antonio Scuri

[Canvasdraw-users] ANN: CD 5.5

[Antonio S. <sc...@te...>]

Hi All,

The 5.5 version of the CD library has been released.

We would like to highlight the following features:

- support for Lua 5.2
- third party libraries updated to newest versions zlib 1.2.5, PDFlib Lite
7.0.5 and Freetype 2.4.8.

You can find the complete list of changes and files for download at:

http://www.tecgraf.puc-rio.br/cd/  

CD is a platform-independent graphics library. It is implemented in several
platforms using native graphics libraries: Microsoft Windows (GDI) and
X-Windows (XLIB).

Best Regards,
Antonio Scuri

[Canvasdraw-users] CD 5.4.1 Released

[Antonio S. <sc...@te...>]

Hi All,

The 5.4.1 version of the CD library has been released. This is just a bug
fix.

You can find the list of changes and files for download at:

http://www.tecgraf.puc-rio.br/cd/ 

Best Regards,
Antonio Scuri

Re: [Canvasdraw-users] two problems

[Boyko B. <bo...@gm...>]

On 19 October 2010 18:45, Antonio Scuri <sc...@te...> wrote:
> ...
> http://www.tecgraf.puc-rio.br/~scuri/tmp/cdsvgfix_Linux26g4.tar.gz
>
>  Let me know if it works for you.
> ...

Yes it does!  Great job, thank you!

Best regards,
   Boyko

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

  Hi,

  The SVG fix was broken. Try this one:

http://www.tecgraf.puc-rio.br/~scuri/tmp/cdsvgfix_Linux26g4.tar.gz 

  Let me know if it works for you.

> The on-screen drawing indeed works properly now with contextplus,
> but, alas, the PostScript and SVG drivers still output commas
> in place of decimal dots.

  Still did not fix the PS driver. But the idea will be the same.

  What I did is to call:

  setlocale(LC_NUMERIC, "C");

  in CreateCanvas. And restore the previous locale in KillCanvas.

Best,
Scuri

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

> The on-screen drawing indeed works properly now with contextplus,
> but, alas, the PostScript and SVG drivers still output commas
> in place of decimal dots.

  I did change only the SVG driver.

  I will do some tests here in a non English environment that I have here
and let you know what happen.

Best,
Scuri

Re: [Canvasdraw-users] two problems

[Boyko B. <bo...@gm...>]

Hi Antonio,

Thank you a lot for being so responsive.

The on-screen drawing indeed works properly now with contextplus,
but, alas, the PostScript and SVG drivers still output commas
in place of decimal dots.

Regards,
   Boyko

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

  Hi,

  I found a bug that caused the blank canvas. You can download pre-compiled binaries with all the fixes so far from this link:

http://www.tecgraf.puc-rio.br/~scuri/tmp/cd_Linux26g4_fixes.tar.gz 

  The SVG fix is also included.

  Attached is a sample to test the Cairo fix.

  I'm working in IUP and as soon as I complete two small tasks, there will be new versions of CD and IUP.

Best,
scuri

> -----Original Message-----
> From: Boyko Bantchev [mailto:bo...@gm...]
> Sent: quarta-feira, 13 de outubro de 2010 19:18
> To: CD discussion list.
> Subject: Re: [Canvasdraw-users] two problems
> 
> Thanks for helping.
> 
> >  ... or downloaded pre-compiled binaries?
> 
> Yes.
> 
> I did require"cdluacairo" and called cd.UseContextPlus()
> as you suggested, but, unfortunately, still have no success
> – now what I get is just a blank canvas.
> (If I remove the calls to cd.UseContextPlus(), the drawing
> is there, but is jagged, as can be expected.)
> 
> Could you please give a minimal example with an IUPLua
> window and a Cairo CD canvas within it, which I could use
> as a starting point?
> 
> Thanks again,
>    Boyko
> 
> -----------------------------------------------------------------------
> -------
> Beautiful is writing same markup. Internet Explorer 9 supports
> standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
> Spend less time writing and  rewriting code and more time creating
> great
> experiences on the web. Be a part of the beta today.
> http://p.sf.net/sfu/beautyoftheweb
> _______________________________________________
> Canvasdraw-users mailing list
> Can...@li...
> https://lists.sourceforge.net/lists/listinfo/canvasdraw-users

Re: [Canvasdraw-users] two problems

[Boyko B. <bo...@gm...>]

>  With package you downloaded?

I am using these:

CD:
cd-5.4_Linux26g4_lib.tar.gz

IUP:
iup-3.2_Linux26g4_bin.tar.gz
iup-3.2_Linux26g4_lib.tar.gz

(with Lua 5.1 as packaged within Ubuntu).

Regards,
    Boyko

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

 Hi,

  I'm going to fix the SVG problem and make available a pre-compiled binary so you can test this and the Cairo drawing with the latest version.

  With package you downloaded?

Best,
scuri

> -----Original Message-----
> From: Boyko Bantchev [mailto:bo...@gm...]
> Sent: quarta-feira, 13 de outubro de 2010 19:18
> To: CD discussion list.
> Subject: Re: [Canvasdraw-users] two problems
> 
> Thanks for helping.
> 
> >  ... or downloaded pre-compiled binaries?
> 
> Yes.
> 
> I did require"cdluacairo" and called cd.UseContextPlus()
> as you suggested, but, unfortunately, still have no success
> – now what I get is just a blank canvas.
> (If I remove the calls to cd.UseContextPlus(), the drawing
> is there, but is jagged, as can be expected.)
> 
> Could you please give a minimal example with an IUPLua
> window and a Cairo CD canvas within it, which I could use
> as a starting point?
> 
> Thanks again,
>    Boyko
> 
> -----------------------------------------------------------------------
> -------
> Beautiful is writing same markup. Internet Explorer 9 supports
> standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
> Spend less time writing and  rewriting code and more time creating
> great
> experiences on the web. Be a part of the beta today.
> http://p.sf.net/sfu/beautyoftheweb
> _______________________________________________
> Canvasdraw-users mailing list
> Can...@li...
> https://lists.sourceforge.net/lists/listinfo/canvasdraw-users

Re: [Canvasdraw-users] two problems

[Boyko B. <bo...@gm...>]

Thanks for helping.

>  ... or downloaded pre-compiled binaries?

Yes.

I did require"cdluacairo" and called cd.UseContextPlus()
as you suggested, but, unfortunately, still have no success
– now what I get is just a blank canvas.
(If I remove the calls to cd.UseContextPlus(), the drawing
is there, but is jagged, as can be expected.)

Could you please give a minimal example with an IUPLua
window and a Cairo CD canvas within it, which I could use
as a starting point?

Thanks again,
   Boyko

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

  BTW, this should be fixed in the next CD version, so you will do:

require"cdluacontexplus"

  As expected. So in Windows will use GDI+, in Linux will use Cairo, and in other UNICES will use XRender.

Best,
scuri 

> -----Original Message-----
> From: Antonio Scuri [mailto:sc...@te...]
> Sent: quarta-feira, 13 de outubro de 2010 14:55
> To: 'CD discussion list.'
> Subject: RE: [Canvasdraw-users] two problems
> 
>    Correction, instead of:
> 
> require"cdluacontexplus"
> 
>   Use:
> 
> require"cdluacairo"
> 
> Best,
> Scuri

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

   Correction, instead of:

require"cdluacontexplus"

  Use:

require"cdluacairo"

Best,
Scuri

Re: [Canvasdraw-users] two problems

[Antonio S. <sc...@te...>]

> One is about plotting on PostScript and SVG canvases.
> Sometimes the generated (text) output is syntactically
> incorrect: it turns out that all fractional numbers have
> commas in place of decimal dots.  This must be, I guess,
> due to the curent environment's language (locale) settings
> getting involved somehow, but that should actually not happen.

  It is a bug. The SVG specification states that it must be a dot in decimal numbers. Thanks for reporting.

  This is simple to fix. Did you compiled from source or downloaded pre-compiled binaries?

 
> The other problem is with the newly introduced contextplus
> feature.  I do “cd.InitContextPlus()” before creating a CD
> canvas (within an IUP canvas), with the intent to get a
> smoother graphics rendering using Cairo (which I do have
> installed).  However, no change of context takes place.
> Am I missing something?  Is there anything else to be done
> in order to activate Cairo rendering?

  Assuming that you are using IUP 3, and loading CD dynamically with require, the call

require"cdluacontexplus" 

  will already call cd.InitContextPlus() for you, so there is no need for that.

  What you need is to call, for example:

cd.UseContextPlus(true)
canvas = cd.CreateCanvas(xxx)
cd.UseContextPlus(false)

Best,
Scuri

[Canvasdraw-users] two problems

[Boyko B. <bo...@gm...>]

Hello,

I have two problems to report or ask help for.

One is about plotting on PostScript and SVG canvases.
Sometimes the generated (text) output is syntactically
incorrect: it turns out that all fractional numbers have
commas in place of decimal dots.  This must be, I guess,
due to the curent environment's language (locale) settings
getting involved somehow, but that should actually not happen.

The other problem is with the newly introduced contextplus
feature.  I do “cd.InitContextPlus()” before creating a CD
canvas (within an IUP canvas), with the intent to get a
smoother graphics rendering using Cairo (which I do have
installed).  However, no change of context takes place.
Am I missing something?  Is there anything else to be done
in order to activate Cairo rendering?

I am using Ubuntu and IUPLua, CDLua.

Thank you in advance.

Regards,
   Boyko

[Canvasdraw-users] CD 5.4 Released

[Antonio S. <sc...@te...>]

Hi All,

The 5.4 version of the CD - Canvas Draw graphics toolkit has been released. 
 
You can find the list of changes and files for download at: 
 
  http://www.tecgraf.puc-rio.br/cd/   

The most notable new feature is the Cairo context plus driver. It can be
used as a context plus driver for GDK providing alpha and anti-aliasing.
Cairo has also support for CD_PRINTER in Windows (native dialog) and in UNIX
(GTK dialog). Along with additional drivers for SVG, PDF, PS and IMAGERGB
not available using context plus.

Also CD now has support for creation, stroke and filling of paths in all
drivers using Begin/Vertex/End and an additional function PathSet, called
for each segment in the path.

The new CD_GL driver is implemented using only OpenGL functions, and can
provide an alternative for those applications that need to render very large
polygons. Text support is provided by the FTGL library using the Freetype
library.

Finally we added to the documentation a screenshot page illustrating the
output produced by all drivers.

IMPORTANT: the main library in Linux and BSD is now the GDK base driver. The
X11 base driver library was renamed to cdx11 on those systems.
 
Best Regards,
Antonio Scuri