On Saturday 05 December 2015 12:02:46 Gene Heskett wrote: > On Saturday 05 December 2015 08:57:52 Gene Heskett wrote: > > Greetings nurbs experts; > > > > I'm in the process of doing the code to carve the corner "keys" of > > these blanket chest lids. The end decorators are 90 degree arcs of > > course. > > > > But it changes width at 1/3 the length of the key, by nominally > > 3/16" because the breadboard end is about that much longer than the > > lids panel is wide on each end. > > > > It seems to me that I don't have a small enough corner radius to > > pull two 45 degree arcs together at the meeting point in the center > > of of that 3/16" space. > > > > So I guess I'm going to test the nurbs code. :) > > > > I think 3 x,y points could do that, to specify the S curve I need. > > Start, center, end. > > But when I do that, I get a straight line from A to C thru B. No curve > anyplace on the stroke. This is with a P1 in every spec. And a P.1 > makes no difference. Does this mean I have to specify at least 5 > points to get an S-curve like the middle 75% of a capital S's height? > > In G90 mode, those are very long lines of code since the variable > names are long enough to be descriptive, and would be shortened by > 2/3rds with the use of G91, and a pre-calculated array of points. Is > this practical and doable?
Short answer, no. I can't find a method to reference a numbered variable indirectly so that I can setup the init data code in a nice neat little WHILE/ENDWHILE loop. This also intimates that I cannot access the #numbered data in a loop. So this code is going to a, take a while to write, and B, look like a bust code generator spit it out. Thought, is this something that gcmc can be made to generate? > The latest .pdf has only an example, and little discussion of the P & > L effects, and even that is above it in the G5.1 Cubic spline text, > none if that is excluded other than the default, which it won't let > you leave out for the P, so there is no P default in 2.7.3. There a > link to the wiki in the pdf, but that gives source credits without > fleshing out any of the howto info at all. > > > So I'll likely be back with some questions that will earn me one of > > those "here's your sign ,stupid" signs. > > Prophetic? I'm doing pretty good at that I think. :) > > > Any gotcha's I should watch for? > > Thanks. > > Cheers, Gene Heskett Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
