From ab8cc85adde879fb963c94d15675783f2cf4b183 Mon Sep 17 00:00:00 2001
From: dos-reis <gdr@axiomatics.org>
Date: Tue, 14 Aug 2007 05:14:52 +0000
Subject: Initial population.

---
 src/graph/view3D/stuff3d.c.pamphlet | 201 ++++++++++++++++++++++++++++++++++++
 1 file changed, 201 insertions(+)
 create mode 100644 src/graph/view3D/stuff3d.c.pamphlet

(limited to 'src/graph/view3D/stuff3d.c.pamphlet')

diff --git a/src/graph/view3D/stuff3d.c.pamphlet b/src/graph/view3D/stuff3d.c.pamphlet
new file mode 100644
index 00000000..f9ae2ff6
--- /dev/null
+++ b/src/graph/view3D/stuff3d.c.pamphlet
@@ -0,0 +1,201 @@
+\documentclass{article}
+\usepackage{axiom}
+\begin{document}
+\title{\$SPAD/src/graph/view3D stuff3d.c}
+\author{The Axiom Team}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+\section{License}
+<<license>>=
+/*
+Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    - Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    - Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+
+    - Neither the name of The Numerical ALgorithms Group Ltd. nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+@
+<<*>>=
+<<license>>
+
+#define _STUFF3D_C
+#include "axiom-c-macros.h"
+#include "useproto.h"
+
+#include "header.h"
+
+#include  <stdlib.h>
+#include  <unistd.h>
+#include  <math.h>
+
+
+
+#include "Gfun.H1"
+#include "spadcolors.H1"
+#include "util.H1"
+
+#include "all_3d.H1"
+/*****************************
+ ***      traverse(n)      ***
+ *** returns the nth point ***
+ *** in a point resevoir   ***
+ *****************************/
+
+viewTriple *
+#ifdef _NO_PROTO
+traverse (n)
+	int n;
+#else
+traverse (int n)
+#endif
+{
+
+  int i;
+  viewTriple *v;
+
+  v = splitPoints;
+  for (i=0; i<n; i++) v = v->next;
+  return(v);
+
+} /* traverse */
+
+
+/**************************/
+/***  float absolute(x) ***/
+/**************************/
+
+float
+#ifdef _NO_PROTO
+absolute (x)
+	float x;
+#else
+absolute (float x)
+#endif
+{
+
+  if (x<0.0) return(-x);
+  else return(x);
+
+}
+
+
+
+
+/****************************/
+/***  float get_random(x) ***/
+/****************************/
+
+float
+#ifdef _NO_PROTO
+get_random()
+#else
+get_random(void)
+#endif
+{
+
+  float x;
+
+  x = (float)(rand() % 100);
+  return(x);
+
+}
+
+
+
+
+/****************************/
+/***   float norm_dist()  ***/
+/****************************/
+
+triple
+#ifdef _NO_PROTO
+norm_dist()
+#else
+norm_dist(void)
+#endif
+{
+
+  float   u1, u2, v1, v2, ss, rad;
+  triple  pert;
+
+  ss = 2.0;
+  while (ss >= 1.0) {
+    u1 = get_random()/100.0;
+    u2 = get_random()/100.0;
+    v1 = 2.0*u1 - 1.0;  v2 = 2.0*u2 - 1.0;
+    ss = v1*v1 + v2*v2;
+  }
+  if (ss == 0.0) ss += .1;
+  rad = -2.0*log(ss)/ss;
+  pert.x = v1 * sqrt(rad);
+  pert.y = v2 * sqrt(rad);    
+
+  return(pert);
+}
+
+
+
+/************************/
+/***  void goodbye()  ***/
+/************************/
+
+void
+#ifdef _NO_PROTO
+goodbye(sig)
+int sig;
+#else
+goodbye(int sig)
+#endif
+{
+
+  int Command;
+
+  PSClose(); /* free PS file and data structure space */
+
+  if (pixelSetFlag) FreePixels(dsply,colorMap,smoothConst);
+  if (!viewAloned) {
+     Command = viewportClosing;
+     check(write(Socket,&Command,intSize));
+     }
+
+  XCloseDisplay(dsply);
+  exit(0);
+}           /* goodbye */
+
+
+
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}
-- 
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