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Re: [Gnuplot-info] depthorder
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From: Zhong R. <re...@uc...> - 2009-12-16 22:58:11
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Great! It works now, but spins a bit slower. Thank you very much. Zhong ---- Original message ---- >Date: Wed, 16 Dec 2009 12:21:05 -0800 (PST) >From: Thomas Sefzick <t.s...@fz...> >Subject: Re: [Gnuplot-info] depthorder >To: gnu...@li... > > >interesting: >splot '-' u 1:2:3:4 w pm3d >seems to work. > > >Thomas Sefzick wrote: >> >> 'set pm3d depthorder' >> should according to the manual work in the same way as the >> normal hidden3d algorithm. >> but it obviously doesn't do this. >> >> >> renzresearch wrote: >>> >>> Thank you Thomas, >>> >>> The sphere was just an example. It is not what I want to >>> draw. The following script is closer to my real case, which >>> draws a triangle and a quadrangle. depthorder is used, but >>> the quadrangle is always in the foreground and the triangle is >>> always in the background. Does the option depthorder mean the >>> drawing order is sorted? >>> >>> Zhong >>> >>> >>> set terminal x11 0 size 1024,1024 >>> set view equal xyz >>> unset surface >>> unset contour >>> set xlabel "x" >>> set xrange [ 6.31720 : 43.9094 ] noreverse nowriteback >>> set ylabel "y" >>> set yrange [ 80.5847 : 118.177 ] noreverse nowriteback >>> set zlabel "z" >>> set zrange [ 13.7818 : 51.3741 ] noreverse nowriteback >>> set pm3d implicit at s >>> set pm3d depthorder >>> set pm3d interpolate 1,1 flush begin ftriangles hidden3d 100 >>> corners2color mean >>> set palette defined ( 0 0.8275 0.8275 0.8275, 0.1667 0.6275 >>> 0.1255 0.9412, 0.5 1 0.498 0.3137,\ >>> 0.8333 1 1 0, 1 0.5647 0.9333 0.5647 ) >>> splot '-' u 1:2:3:4 >>> 14.7151 89.5297 25.4546 0 >>> >>> 14.7151 89.5297 25.4546 0 >>> 14.807 87.5368 24.2974 0 >>> 16.5296 89.0361 24.1387 0 >>> >>> >>> 20.3047 93.7361 25.7469 0 >>> 22.1518 92.287 25.0393 0.0215407 >>> >>> 21.1107 92.4429 25.874 0.0188149 >>> 22.9446 91.0527 24.9673 0.0366333 >>> e >>> >>> >>> ---- Original message ---- >>>>Date: Mon, 14 Dec 2009 08:50:07 -0800 (PST) >>>>From: Thomas Sefzick <t.s...@fz...> >>>>Subject: Re: [Gnuplot-info] rotation center >>>>To: gnu...@li... >>>> >>>> >>>>in addition you should set: >>>> >>>>set samp 25,10 >>>>set iso 10,20 >>>>set urange [-pi:pi] >>>>set vrange [0:pi] >>>>set pm3d at s ftriangles depthorder hidden3d 100 >>>>unset surf >>>> >>>>this makes the sphere look much better. >>>> >>>> >>>>renzresearch wrote: >>>>> >>>>> >>>>> >>>>> ---- Original message ---- >>>>>>Date: Sun, 13 Dec 2009 11:51:41 +0100 >>>>>>From: Hans-Bernhard Bröker <HBB...@t-...> >>>>>>Subject: Re: [Gnuplot-info] rotation center >>>>>>To: re...@uc... >>>>>>Cc: gnu...@li... >>>>>> >>>>>>Zhong Ren wrote: >>>>>>> Please consider the following script that draws a sphere. >>> Why >>>>>>> the rotation center is not at the center of the sphere, when >>>>>>> the graphics is spun by the mouse? >>>>>> >>>>>>Why should it be? Did you really expect gnuplot to have a >>>>> special rule >>>>>>like "whenever there is exactly one spherical surface among >>>>> the plotted >>>>>>things, rotation will magically center around that"? >>>>> >>>>> No, you didn't get my question. Please consider my original >>>>> case again: >>>>> >>>>> Please consider the following script that draws a sphere. Why >>>>> the rotation center is not at the center of the sphere, when >>>>> the graphics is spun by the mouse? If I change to "set xrange >>>>> [ 6 : 44]", the rotation center becomes the center of the >>>>> sphere. This makes the behavior of one of my large >>>>> applications unpredictable. Is there a way to specify the >>>>> rotation center? If not, how is the center selected by >>> Gnuplot? >>>>> >>>>> set terminal x11 0 size 1024,1024 >>>>> set parametric >>>>> set view equal xyz >>>>> set xlabel "x" >>>>> set ylabel "y" >>>>> set zlabel "z" >>>>> set xrange [ 6 : 43] >>>>> set yrange [80 : 118] >>>>> set zrange [13 : 51] >>>>> set pm3d implicit at s >>>>> splot 10*cos(u)*cos(v)+25,10*cos(u)*sin(v)+99,10*sin(u)+33 >>>>> >>>>> The rotation center is indeed at the spherical center when >>>>> xrange is [ 6 : 44], because (6+44)/2 = 25, which is exactly >>>>> the spherical center. When xrange is [ 6 : 43], the rotation >>>>> center should be (6+43)/2 = 24.5, but it is not. It is near >>>>> x=33. What makes Gnuplot to select the rotation center? >>>>> >>>>>> >>>>>>> If not, how is the center selected by Gnuplot? >>>>>> >>>>>>Mouse rotates the entire graph box, so, kind-of obviously, >>> it is >>>>>>centered around the center of the graph box. So if you want >>>>> rotation to >>>>>>be around a particular point, make all three axis ranges >>>>> symmetric >>>>>>around it: >>>>>> >>>>>> set xrange [mid_x - size_x : mid_x + size_x] >>>>>> # likewise for y and z >>>>>> >>>>> >>>>> This is what I thought, but it is not working for me as the >>>>> example I gave above. Gnuplot seems to have a complex rule to >>>>> select the rotation center. I really prefer a user selected >>>>> rotation center. >>>>> >>> ------------------------------------------------------------------------------ >>>>> Return on Information: >>>>> Google Enterprise Search pays you back >>>>> Get the facts. >>>>> http://p.sf.net/sfu/google-dev2dev >>>>> _______________________________________________ >>>>> gnuplot-info mailing list >>>>> gnu...@li... >>>>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info >>>>> >>>>> >>>> >>>>-- >>>>View this message in context: >>> http://old.nabble.com/rotation-center-tp26763320p26779919.html >>>>Sent from the Gnuplot - User mailing list archive at Nabble.com. >>>> >>>> >>>>------------------------------------------------------------------------------ >>>>Return on Information: >>>>Google Enterprise Search pays you back >>>>Get the facts. >>>>http://p.sf.net/sfu/google-dev2dev >>>>_______________________________________________ >>>>gnuplot-info mailing list >>>>gnu...@li... >>>>https://lists.sourceforge.net/lists/listinfo/gnuplot-info >>> >>> ------------------------------------------------------------------------------ >>> Return on Information: >>> Google Enterprise Search pays you back >>> Get the facts. >>> http://p.sf.net/sfu/google-dev2dev >>> _______________________________________________ >>> gnuplot-info mailing list >>> gnu...@li... >>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info >>> >>> >> >> > >-- >View this message in context: http://old.nabble.com/rotation-center-tp26763320p26817820.html >Sent from the Gnuplot - User mailing list archive at Nabble.com. > > >------------------------------------------------------------------------------ >This SF.Net email is sponsored by the Verizon Developer Community >Take advantage of Verizon's best-in-class app development support >A streamlined, 14 day to market process makes app distribution fast and easy >Join now and get one step closer to millions of Verizon customers >http://p.sf.net/sfu/verizon-dev2dev >_______________________________________________ >gnuplot-info mailing list >gnu...@li... >https://lists.sourceforge.net/lists/listinfo/gnuplot-info |