On Thursday, November 16, 2017 at 6:56:00 PM UTC-5, johnbclements wrote: > > Since the release of 6.11, it appears there’s been a major major > performance regression in the display of 3d plots in the interactions > window. > > To see this, try running this program (from the plot docs), then try to > drag the image around. > > On a fresh download of the snapshot, dragging is unusable; you can click > and drag, but all you’ll see is frantic GC. Sometimes, after releasing the > handle, the display updates. This problem does not appear to be present in > the released version of 6.11. > > Also, FWIW, this is running OS X High Sierra, just upgraded about a week > ago. > > Also possibly related; I’ve been having serious trouble running programs > that display long (200-300 lines) blocks of text in the interactions > window. I’ll see (say) twelve and a half lines of purple output, then wait > for three seconds, then another few lines of output, wait a few seconds, > etc. etc. > > I’d be happy to submit this as a github issue…would it go into the > racket/drracket repo, or the racket/racket repo? > > John > > #lang racket > > (require plot) > > (require (only-in plot/utils bounds->intervals linear-seq)) > (define (norm2 x y) (exp (* -1/2 (+ (sqr (- x 5)) (sqr y))))) > (define x-ivls (bounds->intervals (linear-seq 2 8 16))) > (define y-ivls (bounds->intervals (linear-seq -5 5 16))) > (define x-mids (linear-seq 2 8 15 #:start? #f #:end? #f)) > (define y-mids (linear-seq -5 5 15 #:start? #f #:end? #f)) > (plot3d (rectangles3d (append* > (for/list ([y-ivl (in-list y-ivls)] > [y (in-list y-mids)]) > (for/list ([x-ivl (in-list x-ivls)] > [x (in-list x-mids)]) > (define z (norm2 x y)) > (vector x-ivl y-ivl (ivl 0 z))))) > #:alpha 3/4 > #:label "Appx. 2D Normal”)) > > > I am on the latest High Sierra beta (10.13.2 Beta (17C79a))...and I can drag the image created without any issues. It's smooth to drag and everything updates when I am dragging it around. The only change I have made is that I set the default memory limit to 1024MB.
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