I wasn't aware of that, thanks for pointing it out. -M. Hampton
On May 21, 6:47 am, Jonathan <[email protected]> wrote: > Is everyone aware of the Jmol "slab" command?. This can be used from > the console which can be brought up using the pop-up menu. The slab > command allows you to slice an object at any percentage. For > molecules a number of people have implemented a slider interface to > this feature. > > See this link for the command description. > > http://chemapps.stolaf.edu/jmol/docs/#slab > > Here's an example of the slab command using a slider on a small > biomolecule: > > http://biomodel.uah.es/Jmol/sliders/wzorn/slab-slider.htm > > To see how this looks with an object described by a surface use the > popup menu (right mouse button) to select Style>Scheme>Wireframe to > get rid of the ball representation of the atoms and then select > Surfaces>Molecular Surface (one of the other surfaces will work too). > It will take a little while to calculate the surface,but you can than > slice it with the slider. > > Jonathan > > On May 15, 3:42 am, Jurgis Pralgauskis <[email protected]> > wrote: > > > Hello, > > > stereometry needs imagination or more experience, > > to understand cross-sections and so on > > > I found some interactive > > examplehttp://www.learner.org/courses/learningmath/geometry/session9/part_c/... > > > I'd like to have sage interact for solid construction and > > cutting_plane parameters > > and then view it around via jmol :) > > > in school this is mostly needed for parallelepiped or pyramid solids: > > > mysolid = SomeSolid(apex_points_3D) > > # and I can get, mysolid.surface_planes() > > #so I'd expect to have algorithms which detect > > > intersection = Intersection(mysolid, cutting_plane) > > # we get some 2D polygon, > > # probably first analytically find intersection.lines > > # and then solve the > > # self.segmets = self.endpoints (self.lines , self.mysolid) > > # for conic would be some different approach ... > > > intersection.fill() # or draw() would draw some lines or color to show it > > > what does sage have already, and what would need to be hacked? > > > Thanks in advance :) > > > ps.: just for > > referencehttp://en.wikipedia.org/wiki/Cross_section_(geometry)http://en.wikipe... > > > -- > > Jurgis Pralgauskis > > Don't worry, be happy and make things better ;) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en -~----------~----~----~----~------~----~------~--~---
