On 02/08/2012 09:42 AM, Neil Toronto wrote:
On 02/07/2012 03:56 PM, Nikolaus Klepp wrote:
Am Dienstag, 7. Februar 2012 schrieb Neil Toronto:
The relevant code is in "<racket-dir>/collects/plot/common/gui.rkt",
specifically the `make-snip-frame' function.
The basic idea is to make a canvas containing a single read-only-text%
that is initially writable, insert the snip (which you get from
`plot-snip' or `plot3d-snip'), and then set the text to read-only. If
you want to change the plot, set the text writable, delete the snip,
insert the new one, and set it read-only again.
Hi!
Ok, that worked quite straight forward, thank you.
Now my next problem is how to change the size of the sniplet...
Unfortunately, you can't. You'll have to delete the old one from the
read-only-text% and insert a new one.
If this is for resizing, you have another problem: creating a new plot
will reset the viewing angles. I was going to describe how to save and
restore them, but it would require copying much larger sections of
private `plot' code. You're better off letting the viewing angles reset
for now, and waiting for 3d-plot-canvas%, which I'll start on tonight.
Well, that was dumb. 3d-plot-snip% has the fields `angle' and
`altitude', which you can get the values of using `get-field'.
I'm still making 3d-plot-canvas% and 2d-plot-canvas%, though. :)
Be aware that, if you get these fields from a snip that is evaluated in
the REPL, you'll get old values because the REPL displays *copies* of
snips. But the values you get from a snip that you insert into a text%
will be current.
Neil ⊥
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