>Please get a fpGUI repository update so you have the latest AggPas from there. >I found a bug in Agg_2D's Arc() implementation, >and it didn't match the documentation's sample output. Yet the Agg2D's Arc() >worked correctly.
I have updated from your fpGUI repository just now and it is including commit: AggPas: agg_2D's Arc() implementation had parameters in the wrong order. With that change I needed to change what I called the start and sweep (end) angles.. but it's still leaving out the 3rd arc. I have attached the modified sample program for your evaluation. I realize Arcto() and Arc() work differently, but the Arc I am trying to display is a valid Arc segment with either method. Thank you for your help with this James -----Original Message----- From: fpc-pascal [mailto:fpc-pascal-boun...@lists.freepascal.org] On Behalf Of Graeme Geldenhuys Sent: Wednesday, August 30, 2017 2:51 PM To: fpc-pascal@lists.freepascal.org Subject: Re: [fpc-pascal] Agg Pas Arcs Hi James, On 2017-08-30 17:10, James Richters wrote: >>From the above, it seems you implemented your own Arc() procedure. Is that >>correct? > No, it's the Agg2D Arc Function: > http://www.crossgl.com/aggpas/documentation/#Arc > >> Could you try using my version of AggPas and see how that goes for you. > Yes I am using your version already > >> If there is a bug in ARC, I would like to resolve it. > I can supply a complete sample program if it would help. I would like to > resolve this as well, I'm very happy with AggPas for my application. Please get a fpGUI repository update so you have the latest AggPas from there. I found a bug in Agg_2D's Arc() implementation, and it didn't match the documentation's sample output. Yet the Agg2D's Arc() worked correctly. Here is the commit log. =============================== commit 3dfce61fd9a3abba7d8a3825b8fa677bb75907e0 (HEAD -> develop, sourceforge/develop, github/develop) Author: Graeme Geldenhuys <grae...@gmail.com> Date: Wed Aug 30 19:43:19 2017 +0100 AggPas: agg_2D's Arc() implementation had parameters in the wrong order. If you compared the Agg2D vs the Agg_2D Arc() behaviour you would see they give different results. After this commit they generate the same [correct] output. src/corelib/render/software/agg_2D.pas | 2 +- src/corelib/render/software/agg_arc.pas | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) =============================== Further I looked into the implementation details of Arc() and ArcTo(). They use totally different arc implementations. ArcTo() is based on a bezier arc, whereas Arc() doesn't. Regards, Graeme -- fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal http://fpgui.sourceforge.net/ My public PGP key: http://tinyurl.com/graeme-pgp _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Agg2DConsole arc.pas
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