zeycus wrote > Hi, I am new to OpenSCAD, but PovRAY veteran. I am translating a model I > made some time ago from PovRAY to OpenSCAD. The problem is that with very > few solids, I am already getting a message "Normalized Tree is growing > past 200000 elements". I must be doing something wrong, this is just a > single dodecahedron from which some pyramids are substracted. > ... Hi, your post is still flagged "This post has NOT been accepted by the mailing list yet. " so no one on the mailing list sees it. They will see this. If you next post is still flagged (after a few minutes) check your registration <http://forum.openscad.org/mailing_list/MailingListOptions.jtp?forum=1> . ----- Unless specifically shown otherwise above, my contribution is in the Public Domain; To the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. This work is published globally via the internet. :) Inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ -- View this message in context: http://forum.openscad.org/Normalized-tree-is-growing-past-elements-tp13509p13561.html Sent from the OpenSCAD mailing list archive at Nabble.com.

zeycus wrote > Hi, I am new to OpenSCAD, but PovRAY veteran. I am translating a model I > made some time ago from PovRAY to OpenSCAD. The problem is that with very > few solids, I am already getting a message "Normalized Tree is growing > past 200000 elements". I must be doing something wrong, this is just a > single dodecahedron from which some pyramids are substracted. > ... > I guess the main reason for this is the usage of intersection with many objects. Some details of the effect regarding the preview are explained in https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/FAQ#Why_is_the_preview_so_slow.3F A simple workaround (at the expense of a slower initial preview) is to prefix all the intersection() definitions with render(), e.g. module dodecahedron() { rotate([0,0,-90]) render() intersection(){ rotate(a=0, v=[0,0,1]){ ... This will force the intersection result to be generated as mesh making the calculation slower but preventing the CSG tree explosion. ciao, Torsten.