From fed9568042a15eccfe2f65969a4daaf85ca85659 Mon Sep 17 00:00:00 2001
From: Karl Berry <karl@freefriends.org>
Date: Wed, 14 Feb 2018 21:36:11 +0000
Subject: pst-antiprism (14feb18)

git-svn-id: svn://tug.org/texlive/trunk@46643 c570f23f-e606-0410-a88d-b1316a301751
---
 .../dvips/pst-antiprism/pst-antiprism.pro          | 154 +++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 Master/texmf-dist/dvips/pst-antiprism/pst-antiprism.pro

(limited to 'Master/texmf-dist/dvips')

diff --git a/Master/texmf-dist/dvips/pst-antiprism/pst-antiprism.pro b/Master/texmf-dist/dvips/pst-antiprism/pst-antiprism.pro
new file mode 100644
index 00000000000..e9098dba8b3
--- /dev/null
+++ b/Master/texmf-dist/dvips/pst-antiprism/pst-antiprism.pro
@@ -0,0 +1,154 @@
+%% $Id: pst-antiprism.pro 522 2017-08-23 09:03:52Z herbert $
+%% PostScript prologue for pst-antiprism.tex.
+%%
+%% Version 0.02, 2018/02/12
+%%
+%% For distribution, see pst-antiprism.tex.
+%%
+%% 
+/ps@antiprism { 12 dict begin
+  /n exch def        	% cotè du polygone
+  /a exch def 		% length on the antiprism side
+  /angle 360 n div def
+  % hauteur entre les 2 plans
+  /h a 1 1 angle 4 div cos 2 mul dup mul div sub sqrt mul 2 div def
+  % rayon du cercle circonscrit au polygone
+  /r a 2 div angle 2 div sin div def
+  % Les sommets des polygones réguliers supérieur et inférieur, alternativement
+  % inscrit dans un cercle de rayon 1
+  /sommets [ % 0->2n-1
+    0 1 n 1 sub {
+      /k exch def
+      angle k mul cos r mul
+      angle k mul sin r mul
+      h
+      k 0.5 add angle mul cos r mul
+      k 0.5 add angle mul sin r mul
+      h neg
+    } for
+    meshbases {         % les centres de 2 faces polygonales
+      0 0 h      % né 2n
+      0 0 h neg  % né 2n+1
+    } if
+  ] def
+  % les faces
+  /faces [
+    /i 0 def
+    n {
+       [0 i add 1 i add 2 i add ]
+      /i i 2 add def
+    } repeat
+  /i 0 def
+  n {
+    [1 i add 3 i add 2 i add ]
+    /i i 2 add def
+  } repeat
+  meshbases {
+    % les faces sup et inf en triangles
+    /i 0 def
+    n 1 sub {
+      [2 n mul 0 i add 2 i add ]
+      /i i 2 add def
+    } repeat
+    [2 n mul 2 n mul 2 sub 0 ]
+    /i 0 def
+    n 1 sub {
+      [2 n mul 1 add 3 i add 1 i add ]
+      /i i 2 add def
+    } repeat
+    [2 n mul 1 add 1 2 n mul 1 sub ]
+  }{  % face polygonale sup
+    [ 0 2 2 n mul 2 sub {} for ]
+	% face polygonale inf
+    [ 1 2 2 n mul 1 sub {} for ]
+  } ifelse
+  ] def
+  faces n 1 sub get 2 0 put
+  faces 2 n mul 1 sub get 1 1 put 
+  faces 2 n mul 1 sub get 2 0 put 
+  % dans le cas oé les bases ne sont pas étoilées
+  % base sup = 2n
+  % base inf = 2n+1
+  %facessup faces 2 n mul get
+  %facesinf faces 2 n mul 1 get
+  %facestemp faces 0 2 n 1 sub getintervall
+  %
+  meshbases {}{
+    /faces1 faces faces length 2 sub 2 getinterval def
+    /faces2 faces 0 faces length 2 sub getinterval def
+    /faces [faces1 aload pop faces2 aload pop] def
+  } ifelse
+  sommets faces generesolid
+end
+}  def
+%
+/ps@antiprism-fan {
+  10 dict begin
+  /n exch def
+  % coté du polygone
+  /a exch def % length on the antiprism side
+  /angle 360 n div def
+  % hauteur entre les 2 plans
+  /h a
+   1
+   1
+   angle 4 div cos 2 mul dup mul div sub sqrt mul 2 div def
+% rayon du cercle circonscrit au polygone
+/r a 2 div angle 2 div sin div def
+% Les sommets des polygones réguliers supérieur et inférieur, alternativement
+% inscrit dans un cercle de rayon r
+/sommets [ % 0->2n-1
+0 1 n 1 sub {/k exch def
+    angle k mul cos r mul
+    angle k mul sin r mul
+    h
+    k 0.5 add angle mul cos r mul
+    k 0.5 add angle mul sin r mul
+    h neg
+    } for
+% les centres de 2 faces polygonales
+ 0 0 h      % n° 2n
+ 0 0 h neg  % n° 2n+1
+ ] def
+% les faces
+/faces [
+0 2 n 2 mul 3 sub {/i exch def
+[
+ i
+ i 1 add
+ 2 n mul 1 add
+ 2 n mul
+ ]
+[
+ i 1 add
+ i 2 add
+ 2 n mul
+ 2 n mul 1 add
+ ]
+} for
+[
+ 2 n mul
+ 2 n mul 2 sub 2 n mul 1 sub 2 n mul 1 add
+]
+[
+ 2 n mul 1 sub
+ 0
+ 2 n mul
+ 2 n mul 1 add
+] 
+] def
+sommets faces generesolid
+end
+}  def
+%
+/pst-antiprism-fan {
+   a n@ ps@antiprism-fan
+   gere_pstricks_opt
+} def
+%
+/pst-antiprism {
+   a n@ ps@antiprism
+   gere_pstricks_opt
+} def
+%
+%
\ No newline at end of file
-- 
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