Is there any way to draw a line with arrow in wx?

wxPython Users
1

Hi,

I was wondering is there any way to draw a line with an arrow, which can indicate the from ‘point 1’ point to ‘point 2’.

Does anyone know how to implement this?

Thanks

Shannon

2

Hi,
I haven't used any of these myself, but OGL and FloatCanvas come to
mind in this context; see the wxpython demo:
More windows/controls: FloatCanvas
Miscelaneous: OGL

There are likely some other graphic libraris, with this capabilitry.

hth,
  vbr

···

2013/2/21 Shannon <shannonzheng5@gmail.com>:

Hi,
I was wondering is there any way to draw a line with an arrow, which can
indicate the from 'point 1' point to 'point 2'.
Does anyone know how to implement this?

Thanks
Shannon

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3

Probably overkill, but VPython (vpython.org), which is now based on wxPython, makes it extremely easy to draw a 3D arrow. The single statement

arrow()

draws a default white arrow with its tail at the origin, pointing to the right, with length 1. You can optionally specify a tail position, a direction and length, and a color:

A = arrow(pos=(1,2,-1), axis(5,2,3), color=color.cyan)

Later in the program you can alter any of these attributes. For example,

A.color = color.red

With the mouse you can zoom and rotate the “camera” that is viewing the 3D scene.

4

Indeed -- for FloatCanvas, look at the main Demo, look at the "Arrows"
demo under the "Tests" Menu - the arrows are not particularly pretty,
but you could make your own DrawObject with prettier ones if you want.

There are also bunch more little FloatCanvas demos in SVN also:

http://svn.wxwidgets.org/svn/wx/wxPython/3rdParty/FloatCanvas/Demos/

The VectPlot.py demo uses arrows.

-Chris

···

On Thu, Feb 21, 2013 at 1:21 PM, Vlastimil Brom <vlastimil.brom@gmail.com> wrote:

2013/2/21 Shannon <shannonzheng5@gmail.com>:

I was wondering is there any way to draw a line with an arrow, which can
indicate the from 'point 1' point to 'point 2'.

I haven't used any of these myself, but OGL and FloatCanvas come to
mind in this context; see the wxpython demo:
More windows/controls: FloatCanvas

--

Christopher Barker, Ph.D.
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