[Wiki] Sample Graphics

[lainz]

go here:
http://wiki.lazarus.freepascal.org/Sample_Graphics

Lazarus is a powerfull environment to draw graphics, inspirated with BGRABitmap tutorial and my previous Wiki article 'Double Gradient' (now a lot of improvements / versions) see the new 'Sample Graphics' article, like a database of free graphics to use in Lazarus, no bitmap files: just draw with code!

[fredycc]

  Thanks a lot.

Regards.

[JD]

Looks very promising. Please keep up the good work.

[lainz]

See the new addition 'Progress Bars':
http://wiki.lazarus.freepascal.org/Sample_Graphics#Progress_Bars

[liyuangarcia]

Under Linux With GTK double gradient with alpha not Work

[lainz]

Under Linux With GTK double gradient with alpha not Work

circular know why

Or see here

[lainz]

Under Linux With GTK double gradient with alpha not Work

Plese test again.

[lainz]

See the new addition? in progress: 'lazarus about dialog'
http://wiki.lazarus.freepascal.org/Sample_Graphics#Lazarus_About

[Gintas]

The about box looks really professional.
 I don't see who made the Double Gradient and licence is pretty unclear for now.

[lainz]

The about box looks really professional.
 I don't see who made the Double Gradient and licence is pretty unclear for now.

I did Double Gradient, nGradient 'mac.1', Gradient Filler 'eny'.

LGPL for Double Gradient.

[JD]

Is there any way we can use this to improve TChart - the Lazarus charting module? That would be wonderful.

[circular]

Under Linux With GTK double gradient with alpha not Work

I've updated in LazPaint zip file to the last version of BGRABitmap and i've added DoubleGradientAlpha and nGradientAlpha into 'BGRAGradients' unit.

Maybe you can use this JD. Notice that you may want to use radial gradients, which are accessible in a TBGRABitmap object.

[Ask]

Is there any way we can use this to improve TChart

I have recently stated on the mailing list that I think BRGABtimap back-end
for TAChart would be a good idea.
TAChart already includes AggPas and OpenGL back-ends (aka "drawers").
The main problem is that it would create a "reverse" dependence:
the core package would depend on non-core one.
From that point of view, the best solution would be to include such a back-end
in BRGABitmap instead of TAChart
(or to include BGRABitmap into the Lazarus, which is harder to do).

Is somebody wants to work on this, I'll be glad to help.
Otherwise, I will probably do it myself, but not soon.

Generally, I see strong demand for the gradients in TAChart,
so I am willing to implement them independently of BRGABitmap,
if somebody would specify good enough API design
(i.e. what properties/methods should be added, how should they work).

[circular]

About charts, I added phong shading to BGRABitmap. It's on subversion. Maybe it can help...  

[Ask]

Wow. It does "help" in the sense that it makes me want to implement BGRA back-end even more ;-)

However, the API question remains. Maybe you have suggestions?