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Diffstat (limited to 'Master/texmf-dist/doc/metapost/mp3d/gutmp5-eng.mp')
-rw-r--r-- | Master/texmf-dist/doc/metapost/mp3d/gutmp5-eng.mp | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/metapost/mp3d/gutmp5-eng.mp b/Master/texmf-dist/doc/metapost/mp3d/gutmp5-eng.mp new file mode 100644 index 00000000000..5bf58829948 --- /dev/null +++ b/Master/texmf-dist/doc/metapost/mp3d/gutmp5-eng.mp @@ -0,0 +1,84 @@ +% D. Roegel, 7 January 2001 +% roegel@loria.fr + +verbatimtex +%&latex +\documentclass{article} +\begin{document} +etex + +input 3danim +input 3dgeom +output_res:=72; +drawing_scale:=10cm; + +numeric lsa,lsb,lsc,aasc,aasb,absc; +lsa=9;lsb=8;lsc=4;aasc=60;aasb=40;absc=30; + +vardef def_T(expr inst)= + new_obj_points(inst,4); % 4 points + set_T_points(inst); +enddef; + +vardef set_T_points(expr inst)= + save hp,kp,sa,sc,inter;new_point(h);new_point(k); + set_point(1)(0,0,0); % S + set_point(2)(lsa,0,0); % A + set_point(4)(lsc*cosd(aasc),lsc*sind(aasc),0); % C + vec_diff_(h,pnt(2),pnt(1)); + vec_unit_(h,h);vec_mult_(h,h,lsb*cosd(aasb)); + vec_sum_(h,h,pnt(1)); + vec_diff_(k,pnt(4),pnt(1)); + vec_unit_(k,k);vec_mult_(k,k,lsb*cosd(absc)); + vec_sum_(k,k,pnt(1)); + new_plane(hp)(1,1,1); + new_plane(kp)(1,1,1); + new_line(sa)(1,2); + new_line(sc)(1,4); + new_line(inter)(1,1); + def_orth_pl_l_p_(hp)(sa)(h); + def_orth_pl_l_p_(kp)(sc)(k); + if def_inter_l_pl_pl(inter)(hp)(kp): % there is an intersection + if def_point_at(3,-lsb,1)(inter): + else: + message "PROBLEM"; + fi; + else: + message "PROBLEM"; + set_point(3)(1,1,1); + fi; + free_line(inter);free_line(sc);free_line(sa); + free_plane(kp);free_plane(hp); + free_point(k);free_point(h); +enddef; + +vardef draw_T(expr inst)= + draw_line(1,2);draw_line(1,4);draw_line(1,3); + draw_line(2,3);draw_line(3,4); + drawoptions(dashed evenly); + draw_line(2,4); + drawoptions(); + label_obj.bot(btex $S$ etex,1); + label_obj.rt(btex $A$ etex,2); + label_obj.top(btex $B$ etex,3); + label_obj.lft(btex $C$ etex,4); + +enddef; + +assign_obj("tetra","T"); + +%for i:=0 upto 20: +i=0; + beginfig(100+i); + % Observator + set_point_(Obs)(20*cosd(3.6*i-150),20*sind(3.6*i-150),6); + Obs_phi:=90;Obs_dist:=2;point_of_view_obj("tetra",1,Obs_phi); + draw_obj("tetra"); + endfig; +%endfor; + +end. + + + + |