summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/doc/metapost/mp3d/examples/cube6.mp
diff options
context:
space:
mode:
Diffstat (limited to 'Master/texmf-dist/doc/metapost/mp3d/examples/cube6.mp')
-rw-r--r--Master/texmf-dist/doc/metapost/mp3d/examples/cube6.mp94
1 files changed, 94 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/metapost/mp3d/examples/cube6.mp b/Master/texmf-dist/doc/metapost/mp3d/examples/cube6.mp
new file mode 100644
index 00000000000..228cd35f9da
--- /dev/null
+++ b/Master/texmf-dist/doc/metapost/mp3d/examples/cube6.mp
@@ -0,0 +1,94 @@
+% D. Roegel January 2001
+% roegel@loria.fr
+
+input 3danim
+input 3dgeom
+output_res:=72;
+drawing_scale:=2cm;
+
+vardef def_C(expr inst)=
+ new_obj_points(inst,12); % 12 points
+ set_C_points(inst);
+enddef;
+
+vardef set_C_points(expr inst)=
+ set_point(1)(0,0,0);set_point(2)(0,0,1);
+ set_point(3)(0,1,0);set_point(4)(0,1,1);
+ set_point(5)(1,0,0);set_point(6)(1,0,1);
+ set_point(7)(1,1,0);set_point(8)(1,1,1);
+ % vanishing points
+ def_screen_pl(screen);
+ new_line(l)(1,2);
+ if not def_vanishing_point_p_l_pl(9)(l)(screen):
+ message "no vanishing point 1";
+ set_point(9)(0,0,0);
+ fi;
+ set_line(l)(1,3);
+ if not def_vanishing_point_p_l_pl(10)(l)(screen):
+ message "no vanishing point 2";
+ set_point(10)(0,0,0);
+ fi;
+ set_line(l)(1,5);
+ if not def_vanishing_point_p_l_pl(11)(l)(screen):
+ message "no vanishing point 3";
+ set_point(11)(0,0,0);
+ fi;
+ set_line(l)(1,7);
+ if not def_vanishing_point_p_l_pl(12)(l)(screen):
+ message "no vanishing point 4";
+ set_point(12)(0,0,0);
+ fi;
+ free_line(l);
+enddef;
+
+vardef draw_C(expr inst)=
+ draw_lines(1,2,4,3,1);draw_lines(5,6,8,7,5);
+ draw_line(1,5);draw_line(2,6);draw_line(3,7);draw_line(4,8);
+ pickup pencircle scaled 4pt;
+ drawoptions(withcolor red);
+ if z[ipnt_(9)]=(10,10):draw_line(9,9);
+ fi;
+ if z[ipnt_(10)]=(10,10):draw_line(10,10);
+ fi;
+ if z[ipnt_(11)]=(10,10):draw_line(11,11);
+ fi;
+ if z[ipnt_(12)]=(10,10):draw_line(12,12);
+ fi;
+ drawoptions();
+ pickup pencircle scaled 1pt;
+ draw_line(9,9);draw_line(10,10);draw_line(11,11);draw_line(12,12);
+ pickup pencircle scaled 0.4pt;
+ drawoptions(dashed evenly scaled 0.5);
+ for j:=1,3,5,7:draw_line(j,9);endfor;
+ for j:=3,4,7,8:draw_line(j,10);endfor;
+ for j:=1 upto 4:draw_line(j,11);endfor;
+ draw_line(1,12);draw_line(2,12);
+ drawoptions();
+enddef;
+
+new_plane_(screen)(0,0,0); % must be defined before |assign_obj|
+ % because |assign_obj| calls |set_C_point|
+
+% on change le champ car on est très près
+h_field:=160; % degrees
+v_field:=160; % degrees
+
+
+assign_obj("cube","C");
+
+%for i:=0 upto 100:
+i=97;
+ beginfig(100+i);
+ % Observator
+ set_point_(Obs)(1.8*cosd(3.6*i),1.8*sind(3.6*i),2);
+ Obs_phi:=90;Obs_dist:=0.5;point_of_view_obj("cube",8,Obs_phi);
+ reset_obj("cube");
+ draw_obj("cube");
+ endfig;
+%endfor;
+
+end.
+
+
+
+