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hello! and thanks a lot for the help with the iaito, that one went really well! this gave me the impulsion to try another one of my projects, i want to make a hook, but at the moment i hit a performance problem.... i just started and i have preview rendering times of several minutes..... i heavily suspect that there is a more efficient way to achieve this? the sweep function needs polygons, but polygons, are, well, pointy..... that's why i tried it with the 2D shapes and hull... but as is, dev on it is very complicated..... and other than to buy a more powerful comp..... this is what i tried: radius = 15; step = 5; //quers(d1 = 2, d2 = 1.5*2, 2, maxb = 5); for(angle = [0:step:110]) { hull() { rotate([angle,0,0]) translate([0,radius,0]) linear_extrude(height = .1)quers(d1 = minrad(angle), d2 = 1.5*minrad(angle), minrad(angle), maxb = 5); rotate([angle+step,0,0]) translate([0,radius,0]) linear_extrude(height = .1)quers(d1 = minrad(angle+step), d2 = 1.5*minrad(angle+step), minrad(angle+step), maxb = 5); } } function minrad(alpha) = -1/30*alpha +5; module quers(d1 = 2, d2 = 4, h= 2, maxb = 0) { $fn = 200; hull() { if(maxb > 0) { difference() { union() { translate([0,h/2,0]) circle(d = d2); translate([0,-h/2,0]) circle(d = d1); } union() { translate([1.9*h,-h/2,0]) rotate([0,0,-atan((d2-d1)/h)/2])color("red") square(3*h,h,center = true); translate([-1.9*h,-h/2,0]) rotate([0,0,atan((d2-d1)/h)/2])color("red") square(3*h,h,center = true); } } } else { translate([0,h/2,0]) circle(d = d2); translate([0,-h/2,0]) circle(d = d1); } } }//module quers(d1 = 2, d2 = 4 ) -- ciao Bruno =========================================== http://nohkumado.eu/, http://aikido.nohkumado.eu/, http://aikido.zorn.free.fr _______________________________________________ OpenSCAD mailing list [hidden email] http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org |
It only takes six second to preview with OpenSCAD 2019.05. I had to fix the missing [ ] in the square calls first. I.e. translate([1.9*h,-h/2,0]) rotate([0,0,-atan((d2-d1)/h)/2])color("red") square([3*h,h],center = true); translate([-1.9*h,-h/2,0]) rotate([0,0,atan((d2-d1)/h)/2])color("red") square([3*h,h],center = true); F6 takes 1 minute 53 seconds, which doesn't seem bad for something with $fn = 200. On Wed, 22 Apr 2020 at 10:13, Bruno Boettcher <[hidden email]> wrote:
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In reply to this post by bboett
On 22.04.20 11:12, Bruno Boettcher wrote:
> i just started and i have preview rendering times of > several minutes..... Are we talking about the exact code below? That's finishing preview in 3 seconds. I guess actual render will be quite slow due to the high $fn count. Just using a general already quite high resolution of $fa = 2; $fs = 0.2; at the top of the script instead of the $fn = 200; previews in 0 seconds and renders in 19 though. Note that the slightly strange warning is due to square([3*h,h],center = true); missing the [ ] so the 2nd h is where the positional argument center is. ciao, Torsten. _______________________________________________ OpenSCAD mailing list [hidden email] http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
-- Torsten
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indeed.... adding the brackets i am down to 34s..... no error message though..... i have still 2019.01-RC2 , the one shipped with my distro.... and missing the long awaited svg import :( still waiting.... still, if there are suggestions on how to achieve this in a better way, i take them :D ciao Bruno Am Mi., 22. Apr. 2020 um 11:52 Uhr schrieb Torsten Paul <[hidden email]>: On 22.04.20 11:12, Bruno Boettcher wrote: -- ciao Bruno =========================================== http://nohkumado.eu/, http://aikido.nohkumado.eu/, http://aikido.zorn.free.fr _______________________________________________ OpenSCAD mailing list [hidden email] http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org |
On 22.04.20 15:07, Bruno Boettcher wrote:
> i have still 2019.01-RC2, the one shipped with my distro.... You can also check out the AppImage or install via flatpak. ciao, Torsten. _______________________________________________ OpenSCAD mailing list [hidden email] http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
-- Torsten
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