Re: Request for a test in Matlab

[Pantxo Diribarne]

2017-10-24 23:51 GMT+02:00 Richard Crozier <address@hidden>:

On 24/10/17 22:44, Pantxo Diribarne wrote:

Hi,

Could someone test the following code in ML. We would like to see how the text background area behaves when it crosses the axes back planes with or without clipping enabled (see https://savannah.gnu.org/bugs/?39692).

---

clf
set (gca, 'color', 'b');
ht = text (.5, .5, 'toto', 'backgroundcolor', 'r', 'margin', 20);
xlim ([0 3])
ylim ([0 3])
surface ();
view (90, 35);
drawnow
c = getframe (gcf);
imwrite (c.cdata, 'view_90_35.png');
view (0, 26.8)
drawnow
c = getframe (gcf);
imwrite (c.cdata, 'view_0_26.8.png');
set (ht, 'clipping', 'on')
drawnow
c = getframe (gcf);
imwrite (c.cdata, 'view_0_26.8_clipping.png');

---

The script should generate 3 png files with figure captures.

Pantxo

MATLAB Version: 9.1.0.441655 (R2016b)
Operating System: Linux 4.4.0-83-generic #106~14.04.1-Ubuntu SMP Mon Jun 26 18:10:19 UTC 2017 x86_64
Java Version: Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode


Richard

--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

Thanks Richard. So it looks like  Matlab disables depth testing for text objects or at least for the background area.

In order to confirm this, could you please run the following and post the png here:

----

clf

peaks ();

for p = -3:3
  text (p, p, p, 'toto', 'backgroundcolor', 'r', 'margin', 20);
end

drawnow ()

c = getframe (gcf);

imwrite (c.cdata, 'peaks_and_text.png');

----

Thanks in advance.

Pantxo