[Pythoncad-developer] View application for the new kernel

[Gertwin G. <ger...@gm...>]

Hi all,

I just added a view application for the new kernel to the repository.
I is written in wxPython and is far from complete.
In the end this application has to become version R38 (if performance
tests succeed).
Drawing is done with a standard wxPython drawing functions, no cairo, no OpenGL.

Functionality:
1. open a database.
2. rebuild the spatial index (RTree) in the database.
3. regenerate the drawing = rebuild the display list.
4. redraw the display list.
5. zoom all = set up view translation and redraw the display list.
Use zoom all after resizing the application window to get an idea of
the performance.

I did not yet optimize anything.
After optimizing it will (should) be faster than it is now.
Drawing is done directly to screen, I need to draw to a "in memory"
bitmap and show this bitmap on screen.
All entities are drawn, even if they are outside the viewport.

If someone have some time to create a larger database I can do some
performance tests.
Maybe it is not so handy to have such a large database in git.

Regards,
Gertwin