[wxPython-users] Newbie seeks direction

[Christopher Barker]

Kent Tenney wrote:
> * draw a shape over an image and retrieve the corner coordinates
>  of that shape.

> At this point I took code from
> http://murl.se/11111
> and listing 8.2 from the book, "A simple frame subclass"
> 
> Is this a reasonable starting point?

That's specifically addressing putting an image behind other widgets, 
which isn't really what you need, but the basic techniques are there.

Take a look at the Wiki, in:

http://wiki.wxpython.org/index.cgi/RecipesImagesAndGraphics

http://wiki.wxpython.org/index.cgi/WorkingWithImages

http://wiki.wxpython.org/index.cgi/DoubleBufferedDrawing


> Any suggestions as to how to implement drawing shape
> outlines over the image?

You could also use wx.lib.floatcanvas

It's designed to be a vector tool primarily, but it does support images, 
and if you use the pixel coords of the image as your coordinates, it 
will let you zoom and pan around the image, and give you the pixel 
coords of your mouse actions even when zoomed in or out.

I've got an updated version, and bunch of extra examples that will help 
you out, if ask me, I'll send it to you directly -- it's too big for 
this list.

-Chris




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Christopher Barker, Ph.D.
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