From a0c4815433ccd57322f4f7703ca35e9ccfa59250 Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Thu, 8 Oct 2009 13:15:52 +0000
Subject: Added MesaLib-7.6

---
 .../glu/sgi/libnurbs/nurbtess/primitiveStream.h    | 109 +++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 mesalib/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h

(limited to 'mesalib/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h')

diff --git a/mesalib/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h b/mesalib/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h
new file mode 100644
index 000000000..b4174f146
--- /dev/null
+++ b/mesalib/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h
@@ -0,0 +1,109 @@
+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+/*
+*/
+
+/*we do not use the constans GL_... so that this file is independent of 
+ *<GL/gl.h>
+ */
+
+#ifndef _PRIMITIVE_STREAM_H
+#define _PRIMITIVE_STREAM_H
+
+enum {PRIMITIVE_STREAM_FAN, PRIMITIVE_STREAM_STRIP};
+
+#include "definitions.h"
+
+class primStream {
+  Int *lengths; /*length[i]=number of vertices of ith primitive*/
+  Int *types; /*each primive has a type: FAN or STREAM*/
+  Real *vertices; /*the size >= 2 * num_vertices, each vertex (u,v)*/
+
+  /*the following size information are used for dynamic arrays*/
+  Int index_lengths; /*the current available entry*/
+  Int size_lengths; /*the allocated size of the array: lengths*/
+  Int index_vertices;
+  Int size_vertices;
+
+  /*the vertex is inserted one by one. counter is used to 
+   *count the number of vertices which have been inserted so far in 
+   *the current primitive
+   */
+  Int counter;
+
+public:  
+  primStream(Int sizeLengths, Int sizeVertices);
+  ~primStream();
+
+  Int get_n_prims() //num of primitives
+    {
+      return index_lengths;
+    }
+  Int get_type(Int i)  //the type of ith primitive
+    {
+      return  types[i];
+    }
+  Int get_length(Int i) //the length of the ith primitive
+    {
+      return lengths[i];
+    }
+  Real* get_vertices() {return vertices;}
+
+  /*the begining of inserting a new primitive. 
+   *reset counter to be 0.
+   */
+  void begin();
+  void insert(Real u, Real v);
+  void insert(Real v[2]) {insert(v[0], v[1]);}
+  void end(Int type);
+  
+  Int num_triangles();
+  
+  void triangle(Real A[2], Real B[2], Real C[2])
+    {
+      begin();
+      insert(A);
+      insert(B);
+      insert(C);
+      end(PRIMITIVE_STREAM_FAN);
+    }
+  void print();
+  void draw(); /*using GL to draw the primitives*/
+};
+
+
+
+
+
+
+  
+
+#endif
+
-- 
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