Your idea of using a hidden and resized isigraph to draw to as an
offscreen canvas has much more serious problems in the Java front end
and this makes me even less interested in tackling the problem right
now.
----- Original Message -----
From: "Oleg Kobchenko" <[EMAIL PROTECTED]>
To: "Beta forum" <[email protected]>
Sent: Thursday, August 10, 2006 5:18 PM
Subject: Re: [Jbeta] Black rectangle in isigraph and error
Here is an example of simplified offscreen canvas.
It is done with another hidden isigraph, which should
be two times as large as the on-screen one.
It has to support resizing, so the off-screen isigraph
is dynamically resized.
But black rectangles appear when the window
is resized beyond its original size.
NB. =========================================================
require 'gl2'
coinsert 'jgl2'
F=: 0 : 0
pc f;pn "Font Fit";
xywh 6 6 160 120;cc g isigraph rightmove bottommove;
pas 6 6;pcenter;
rem form end;
)
f_run=: 3 : 0
wd F
wd 'xywh 0 0 10 10; cc h isigraph;'
wd 'setshow h 0;'
wd 'pshow;'
)
av2=: _2&((+/ <[EMAIL PROTECTED] #)\)
f_g_paint=: 3 : 0
glsel 'g'
wh=. 2*glqwh''
wd 'setxywhx h 0 0 ',":wh
glsel 'h'
glclear ''
glbrush glrgb 3#200
glpen <.(0.01*-:+/wh), 0 [ glrgb 3#100
glellipse ,0.1 0.8 <[EMAIL PROTECTED]/ wh
glpaint ''
$q=. (|.wh)$glqpixels 0 0,wh
q=. 16b010101*av2 av2&.|: 256|q
glsel 'g'
glclear ''
glpixels 0 0,(|.$q),,q
glpaint ''
)
f_close=: 3 : 0
wd'pclose'
)
f_run ''
--- Eric Iverson <[EMAIL PROTECTED]> wrote:
The non-unique sparse elements is due to a wd bug. I forget the
details.
One variant of this has been fixed in the next beta so please test
again. A buffer overflow, rather than resizing and continuing, gets
confused as an error with a curious number.
----- Original Message -----
From: "Oleg Kobchenko" <[EMAIL PROTECTED]>
To: "Beta forum" <[email protected]>
Sent: Thursday, August 10, 2006 2:07 PM
Subject: [Jbeta] Black rectangle in isigraph and error
>I have been experimenting with offscreen
> isisgraph which is resized with other
> visible isisgraph as shown in fontscale.ijs.
>
> http://www.jsoftware.com/jwiki/Scripts/Font_Fit
>
> In addition to the issue with black rectangles,
> when you resize the window large engough,
> in the end, when closign J it gives
>
> |non-unique sparse elements: wd
> | wdq=: wd'q'
>
> But more testing probably is required.
> I just report because I never saw such error before.
>
>
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