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-% revolvers.mp
-% L. Nobre G.
-% 2004
-
-input featpost3Dplus2D;
-
-verbatimtex \documentclass{article}\begin{document}{\sffamily etex
-
-def posang( expr Angul ) =
- rp( green*cosd( Angul ) + blue*sind( Angul ) )
-enddef;
-
-beginfig(1);
- f := (3,5,4);
- numeric labscal;
- picture labr, labc, laba, labum, labdo, labtr, labqu, labci;
- labscal = 2;
- ahlength := 8pt;
- ahangle := 30;
- labc = btex $\vec{c}$ etex scaled labscal;
- laba = btex $\vec{A}$ etex scaled labscal;
- labr = btex $R$ etex scaled labscal;
- labum= btex 1 etex scaled labscal;
- labdo= btex 2 etex scaled labscal;
- labtr= btex 3 etex scaled labscal;
- labqu= btex 4 etex scaled labscal;
- labci= btex 5 etex scaled labscal;
- drawoptions( withpen pencircle scaled 1.7pt withcolor 0.65blue );
- tropicalglobe( 5, black, 1, blue );
- drawoptions( withpen pencircle scaled 1.3pt );
- drawdblarrow rp(black)--rp(red);
- label.top( labr, rp((0.5,0,0)) );
- drawarrow rp(black)--rp(blue);
- label.rt( laba, rp((0,0,0.5)) );
- dotlabel.lrt( labc, rp(black) );
- dotlabel.rt( labum, posang(-72) );
- dotlabel.top( labdo, posang(-36) );
- dotlabel.top( labtr, posang(0) );
- dotlabel.top( labqu, posang(36) );
- dotlabel.top( labci, posang(72) );
-endfig;
-
-beginfig(2);
- f := (3,5,5.7);
- numeric labscal;
- picture labri, labc, laba, labro;
- labscal = 2;
- ahlength := 8pt;
- ahangle := 30;
- labc = btex $\vec{c}$ etex scaled labscal;
- laba = btex $\vec{A}$ etex scaled labscal;
- labri= btex $R_i$ etex scaled labscal;
- labro= btex $R_o$ etex scaled labscal;
- drawoptions( withpen pencircle scaled 1.7pt withcolor 0.65blue );
- rigorousdisc( 0.5, true, black, 1, 0.85*blue );
- drawoptions( withpen pencircle scaled 1.3pt );
- drawdblarrow rp(black)--rp(red);
- label.lrt( labro, rp(0.5*red) );
- drawdblarrow rp(black+0.85*blue)--rp(0.5*green+0.85*blue);
- label.urt( labri, rp(0.25*green+0.85*blue) );
- drawarrow rp(black)--rp(0.85*blue);
- label.ulft( laba, rp((0,0,0.5)) );
- dotlabel.rt( labc, rp(black) );
-endfig;
-
-beginfig(3);
- f := (3,2.05,2.65);
- numeric labscal, bray, sray;
- picture labrb, labc, laba, labrs;
- labscal = 2;
- ahlength := 8pt;
- ahangle := 30;
- bray = 0.7;
- sray = 0.4;
- labc = btex $\vec{c}$ etex scaled labscal;
- laba = btex $\vec{A}$ etex scaled labscal;
- labrb= btex $R_b$ etex scaled labscal;
- labrs= btex $R_s$ etex scaled labscal;
- drawoptions( withpen pencircle scaled 1.7pt withcolor 0.65blue );
- smoothtorus( black, blue, bray, sray );
- drawoptions( withpen pencircle scaled 1.3pt );
- draw goodcirclepath( bray*red, green, sray ) dashed evenly;
- drawdblarrow rp(black)--rp(bray*red);
- label.ulft( labrb, rp(0.5*bray*red) );
- drawdblarrow rp(bray*red+sray*blue)--rp(bray*red);
- label.llft( labrs, rp(bray*red+0.5*sray*blue) );
- drawarrow rp(black)--rp(sray*blue);
- label.rt( laba, rp((0,0,0.5*sray)) );
- dotlabel.lrt( labc, rp(black) );
-endfig;
-
-beginfig(4);
- f := (3,5,4);
- numeric labscal;
- picture labr, labc, laba;
- labscal = 2;
- ahlength := 8pt;
- ahangle := 30;
- labc = btex $\vec{c}$ etex scaled labscal;
- laba = btex $\vec{A}$ etex scaled labscal;
- labr = btex $R$ etex scaled labscal;
- drawoptions( withpen pencircle scaled 1.7pt withcolor 0.65blue );
- spatialhalfsfear( black, blue, 1 );
- drawoptions( withpen pencircle scaled 1.3pt );
- drawdblarrow rp(black)--rp(red);
- label.ulft( labr, rp(0.5*red) );
- drawarrow rp(black)--rp(0.4*blue);
- label.rt( laba, rp((0,0,0.2)) );
- dotlabel.lrt( labc, rp(black) );
-endfig;
-
-beginfig(5);
- f := (3,5,7);
- numeric labscal;
- picture labr, labc, laba;
- labscal = 2;
- ahlength := 10pt;
- ahangle := 30;
- labc = btex $\vec{c}$ etex scaled labscal;
- laba = btex $\vec{S}$ etex scaled labscal;
- labr = btex $R$ etex scaled labscal;
- drawoptions( withpen pencircle scaled 1.7pt withcolor 0.65blue );
- spheroid( black, 2*blue, 1 );
- drawoptions( withpen pencircle scaled 1.3pt );
- draw ellipticpath( black, red, 2*blue ) dashed evenly;
- draw ellipticpath( black, green, 2*blue ) dashed evenly;
- drawdblarrow rp(black)--rp(red);
- label.ulft( labr, rp((0.5,0,0)) );
- drawarrow rp(black)--rp(2*blue);
- label.rt( laba, rp((0,0,1)) );
- dotlabel.lrt( labc, rp(black) );
-endfig;
-
-verbatimtex }\end{document} etex
-
-end;