pst-coil

git-svn-id: svn://tug.org/texlive/trunk@23558 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 36 insertions, 2 deletions

diff --git a/Master/texmf-dist/dvips/pst-coil/pst-coil.pro b/Master/texmf-dist/dvips/pst-coil/pst-coil.pro
index 518703e43f9..026f662e779 100644
--- a/Master/texmf-dist/dvips/pst-coil/pst-coil.pro
+++ b/Master/texmf-dist/dvips/pst-coil/pst-coil.pro
@@ -1,6 +1,6 @@
 %!ps
 % PostScript prologue for pst-coil.tex.
-% Version 1.03, 2010/02/01
+% Version 1.05, 2011/07/12
 % For distribution, see pstricks.tex.
 %
 /tx@CoilDict 40 dict def tx@CoilDict begin
@@ -49,7 +49,8 @@
   /mtrx CM def 
   relativePeriod 
     {} 
-    { SinLength Periods div roundValue { cvi } if
+    { SinLength Periods div 
+      roundValue dup 0 eq { pop cvi } { 1 eq { round } if } ifelse
       /Periods ED } ifelse
   /dxStep SinLength 360 div def         % the default step for x pos
   /xStep 360 PointsPerPeriod div def    % the step for the for loop
@@ -87,5 +88,38 @@
   n { x w /w w neg def /x x h add def } repeat
   TotalLength ArmA sub 0 TotalLength 0 } def
 %
+ /ZigZagCirc { % x0 y0 x1 y1 bow h w ArmA ArmB on stack
+  /bow ED 
+  /ArmB ED /ArmA ED 
+  2 div /w ED 
+  w mul /h ED /y1 ED /x1 ED /y0 ED /x0 ED 
+  x1 y1 translate %
+  y0 y1 sub x0 x1 sub 2 copy Pyth 2 div 
+  /HalfLength ED
+  Atan /ang ED %angle of A relative to B
+  %rotate % so end B is origin and BA is horizontal, A to right
+  /theta bow abs HalfLength Atan 2 mul def %halfangular sector for arc
+  /theta2 theta 2 mul def % full arc
+  %/psi ang 90 sub theta sub def % angle of B from center if bow>0
+  /rho HalfLength theta sin div def % radius of circle
+  bow 0 gt { /direc 1 def /thetaB ang 90 sub theta sub def } % travel B to A in pos drn
+  { /direc -1 def /thetaB ang 90 add theta add def } ifelse % travel B to A in neg drn
+  %thetaB=angle from center to B
+  rho thetaB 180 add PtoC translate % origin now at center
+  /h h rho div RadtoDeg def
+  /ArmA ArmA rho div RadtoDeg def /ArmB ArmB rho div RadtoDeg def
+  theta2 ArmA sub ArmB sub dup h div cvi /n ED n h mul
+  %HalfLength 2 mul ArmA sub ArmB sub dup h div cvi /n ED n h mul
+  sub 2 div dup ArmA add 
+  /ArmA ED ArmB add /ArmB ED 
+  /h h direc mul def % h is now angle increment for half-period
+  /rhoo rho w add def /rhoi rho w sub def % outer and inner radii
+  /arg thetaB ArmB direc mul add def % argument for 2nd point
+%  thetaB = direc = bow = HalfLength = theta = rho = arg = h = n =
+  mark rho thetaB  PtoC  rho arg PtoC /arg arg h 2 div add def
+  n { w 0 gt { rhoo }{ rhoi } ifelse arg PtoC /w w neg def /arg arg h add def } repeat
+  rho thetaB theta2 ArmA sub direc mul add  PtoC rho thetaB theta2 direc mul add PtoC  
+  } def 
+%
 end
 % END pst-coil.pro