Re: Axes Ticks Positioning in 3D plots (FLTK)

[Ben Abbott]

On Jan 9, 2011, at 8:29 PM, Jordi Gutiérrez Hermoso wrote:

> On 9 January 2011 17:07, logari81 <address@hidden> wrote:
>> In the attached patch I have modified the positioning of axes in 3D
>> plots, in order to make it more compatible with ML.
> 
> Is this "compatibility"? I always thought of compatibility of just
> making sure code written for Matlab also work in Octave, not so much
> about superficial cosmetic differences. Will someone really complain
> about how incompatible Octave is because it displays ticks at top
> instead of bottom when you rotate to look at the bottom? I like how
> the ticks without your patch are always jutting out. With your patch,
> the ticks are either coming out of the screen or going into the screen
> depending on the elevation from which you're looking at the figure.
> 
> 
> On 9 January 2011 17:38, Ben Abbott <address@hidden> wrote:
>> The axis box and grid lines appear to create a 3D cube whose
>> contents are hidden. Thus the globe appears (to me) to be outside
>> the axis limits.
> 
> You appear to be a victim of this:
> 
>     http://en.wikipedia.org/wiki/Necker_Cube
> 
> I agree with Ben here on what it appears to look like. I don't like
> this Matlab behaviour. Having the ticks on top seems to give a sort of
> visual cue that the figure is inside the cube, not on top of it.
> 
> Or it could be just a case of the spinning dancer, everyone sees it
> one way and exactly one way only and can't agree with people who see
> it the opposite way.
> 
> - Jordi G. H.

I've applied the patch and run the ellipsoid demo.

        demo ellipsoid

Using the mouse to rotate, the result looks very nice to me.

My apologies to Jordi, but after applying the patches and experimenting, I like 
the result.

I've uploaded a couple of mpg videos so others can compare Kostas' 
implementation with what I see with Matlab 2010b on MacOS X.

The Octave version is  ...

        https://files.me.com/bpabbott/zahp7n

The Matlab one is ...

        https://files.me.com/bpabbott/k0xzj8

Ben