In our previous episode, Hunter1972 said:
> > > I assume your polylines are basically an array of X,Y coordinates in
> > > single
> > precision + color information? If you supply examples of those, I'll see if
> > I can hack something together. (binary only, since it is a work codebase,
> > more t
On 12/09/14 13:51, Hunter1972 wrote:
> I will check what these libraries can do and how fast.
You can also take a look at AggPas. It is a very good 2D vector graphics
engine and loads of example apps that show scaling and panning. A copy
can be found in the fpGUI or Lazarus code repository. The on
> ...SDL...
> -Michael
> .
> MSEgui txychartedit
> Another option is Lazarus TChart.
> .
> Martin
I will check what these libraries can do and how fast.
> > I assume your polylines are basically an array of X,Y coordinates in single
> precision + color information? If you supply examples
In our previous episode, Hunter1972 said:
> I am new in FPC and want to understand the correct(fastest) methods when
> drawing 2D graphics.
> The task is simple but extensive: to draw about 200 polylines with
> 5-20 points in each.
> I have made a test code in OnPaint event:
OpenGL is an
On 09/12/2014 01:36 AM, Hunter1972 wrote:
Then I'd like to add some actions to the graphics:
1)Scaling around some point (by mouse wheel), actually magnifying
2)Moving this scaled point quickly to another part of graphics( using scroll
bars?)
I once did "zooming and panning" of pixel graphics u
On Friday 12 September 2014 01:36:56 Hunter1972 wrote:
> Hello,
> I am new in FPC and want to understand the correct(fastest) methods when
> drawing 2D graphics. The task is simple but extensive: to draw about 200
> polylines with 5-20 points in each.
MSEgui txychartedit supports it. An ex
Hello,
I am new in FPC and want to understand the correct(fastest) methods when
drawing 2D graphics.
The task is simple but extensive: to draw about 200 polylines with 5-20
points in each.
I have made a test code in OnPaint event:
...
type
TSingleArray = array of single;
TIntArray =
