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authormarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
committermarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
commita0c4815433ccd57322f4f7703ca35e9ccfa59250 (patch)
treef5213802ec12adb86ec3136001c1c29fe5343700 /mesalib/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h
parentc73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff)
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Added MesaLib-7.6
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+/*
+ * 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
+