| /* |
| * 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. |
| */ |
| /* |
| ** $Header: /cvs/bao-parsec/pkgs/libs/mesa/src/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h,v 1.1.1.1 2012/03/29 17:22:17 uid42307 Exp $ |
| */ |
| |
| /*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 |
| |