Hello Bryan,
Haha....I guess this will start of a "Linux/Windows", "vi/emacs" kind
of discussion.
Anyway, I agree with you that some form of standardization would be nice.
I have worked with several 3D like applications, mostly in CAD (Cimatron,
Solidworks, CATIA V5, Solidedge) or simulation (MSC.Patran, ANSYS, ABAQUS).
I have not been a hardcore user of any of these software tools. But the way they
handle rotating and moving camera/viewport is different for everyone of them.
I personally like the following:
- Rotation, left mousebutton
- Zoom, scroll-mouse
- Pan, click middle mouse button
Ideally, something modifier keys could be used for more fine-grained control.
An example could be to have 'w'+left mouse button zoom in with a rectangle.
I will look into this subject early next year (2010), since I will be
building my
first serious program with PythonOCC.
Regards,
Marco
On Sun, Dec 27, 2009 at 8:57 PM, Bryan Bishop <kanz...@gmail.com> wrote:
> Hey all,
>
> I was wondering if anyone has a good example of easy user interaction
> with OCC. In HeeksCAD, rotating and moving the camera/viewport,
> rotating the object, etc. is made difficult by cryptic two-click mouse
> button maneuvers, and rotating the camera versus rotating a particular
> object isn't always obvious.
>
> The most useful viewport tools that I have seen so far are the ones
> that specifically move you to the front, back, side, top, bottom, and
> so on. I was wondering if anyone knows of a good example of a good
> user interaction model with OCC. For instance, HeeksCAD and FreeCAD
> both seem to use the default settings that are also used in
> InteractiveViewer.py.
>
> The only program that comes to mind that seems to have a good user
> interaction model is "gmsh". Click and hold left mouse button to
> rotate, click and hold both left and right mouse buttons to zoom in
> and out. Right mouse button moves the object.
>
> gmsh:
> left mouse button: rotate
> right mouse button: move camera left, right, up, down
> left & right mouse button: zoom in/out
>
> HeeksCAD:
> mouse wheel: zoom in/out
> left & right mouse button: rotate
> left mouse button (after left clicking on an object) move object
>
> FreeCAD
> arrow keys: move camera left, right, up, down
> left & right mouse button: rotate?
>
> To me, gmsh feels the most natural. HeeksCAD's mouse wheel and "click
> an object and then move it" also feels natural. I wish these were more
> standard, or customizable. Anyway, if anyone has any hints on how to
> set up these specific actions under pythonOCC, I am all ears.
>
> - Bryan
> http://heybryan.org/
> 1 512 203 0507
>
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> Pythonocc-users@gna.org
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