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SGI Developer Toolbox 6.1
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SGI Developer Toolbox 6.1 - Disc 1.iso
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OpenGL
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unitsquare.c++
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C/C++ Source or Header
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1996-11-11
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5KB
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180 lines
/*
* (c) Copyright 1993, 1994, Silicon Graphics, Inc.
* ALL RIGHTS RESERVED
*
* Permission to use, copy, modify, and distribute this software for
* any purpose and without fee is hereby granted, provided that the above
* copyright notice appear in all copies and that both the copyright notice
* and this permission notice appear in supporting documentation, and that
* the name of Silicon Graphics, Inc. not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission.
*
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
*
* U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND
* Use, duplication, or disclosure by the Government is subject to
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
* clause at DFARS 252.227-7013 and/or in similar or successor
* clauses in the FAR or the DOD or NASA FAR Supplement.
* Unpublished-- rights reserved under the copyright laws of the
* United States. Contractor/manufacturer is Silicon Graphics,
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
*
* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
*/
#include "unitsquare.h"
#include <GL/gl.h>
static float vertices[][3] = {
{-1.0, -1.0, 0.0},
{0.0, -1.0, 0.0},
{0.0, 0.0, 0.0},
{-1.0, 0.0, 0.0},
{0.0, -1.0, 0.0},
{1.0, -1.0, 0.0},
{1.0, 0.0, 0.0},
{0.0, 0.0, 0.0},
{-1.0, 0.0, 0.0},
{0.0, 0.0, 0.0},
{0.0, 1.0, 0.0},
{-1.0, 1.0, 0.0},
{0.0, 0.0, 0.0},
{1.0, 0.0, 0.0},
{1.0, 1.0, 0.0},
{0.0, 1.0, 0.0}
};
static float texcoord[][2] = {
{0.0, 0.0},
{0.5, 0.0},
{0.5, 0.5},
{0.0, 0.5},
{0.5, 0.0},
{1.0, 0.0},
{1.0, 0.5},
{0.5, 0.5},
{0.0, 0.5},
{0.5, 0.5},
{0.5, 1.0},
{0.0, 1.0},
{0.5, 0.5},
{1.0, 0.5},
{1.0, 1.0},
{0.5, 1.0}
};
unitsquare::unitsquare()
{
}
void unitsquare::open()
{
}
void unitsquare::draw()
{
glBegin(GL_QUADS);
glTexCoord2fv(texcoord[0]);
glVertex3fv(vertices[0]);
glTexCoord2fv(texcoord[1]);
glVertex3fv(vertices[1]);
glTexCoord2fv(texcoord[2]);
glVertex3fv(vertices[2]);
glTexCoord2fv(texcoord[3]);
glVertex3fv(vertices[3]);
glTexCoord2fv(texcoord[4]);
glVertex3fv(vertices[4]);
glTexCoord2fv(texcoord[5]);
glVertex3fv(vertices[5]);
glTexCoord2fv(texcoord[6]);
glVertex3fv(vertices[6]);
glTexCoord2fv(texcoord[7]);
glVertex3fv(vertices[7]);
glTexCoord2fv(texcoord[8]);
glVertex3fv(vertices[8]);
glTexCoord2fv(texcoord[9]);
glVertex3fv(vertices[9]);
glTexCoord2fv(texcoord[10]);
glVertex3fv(vertices[10]);
glTexCoord2fv(texcoord[11]);
glVertex3fv(vertices[11]);
glTexCoord2fv(texcoord[12]);
glVertex3fv(vertices[12]);
glTexCoord2fv(texcoord[13]);
glVertex3fv(vertices[13]);
glTexCoord2fv(texcoord[14]);
glVertex3fv(vertices[14]);
glTexCoord2fv(texcoord[15]);
glVertex3fv(vertices[15]);
glEnd();
}
void unitsquare::draw_backwards()
{
glBegin(GL_QUADS);
glTexCoord2fv(texcoord[3]);
glVertex3fv(vertices[3]);
glTexCoord2fv(texcoord[2]);
glVertex3fv(vertices[2]);
glTexCoord2fv(texcoord[1]);
glVertex3fv(vertices[1]);
glTexCoord2fv(texcoord[0]);
glVertex3fv(vertices[0]);
glTexCoord2fv(texcoord[7]);
glVertex3fv(vertices[7]);
glTexCoord2fv(texcoord[6]);
glVertex3fv(vertices[6]);
glTexCoord2fv(texcoord[5]);
glVertex3fv(vertices[5]);
glTexCoord2fv(texcoord[4]);
glVertex3fv(vertices[4]);
glTexCoord2fv(texcoord[11]);
glVertex3fv(vertices[11]);
glTexCoord2fv(texcoord[10]);
glVertex3fv(vertices[10]);
glTexCoord2fv(texcoord[9]);
glVertex3fv(vertices[9]);
glTexCoord2fv(texcoord[8]);
glVertex3fv(vertices[8]);
glTexCoord2fv(texcoord[15]);
glVertex3fv(vertices[15]);
glTexCoord2fv(texcoord[14]);
glVertex3fv(vertices[14]);
glTexCoord2fv(texcoord[13]);
glVertex3fv(vertices[13]);
glTexCoord2fv(texcoord[12]);
glVertex3fv(vertices[12]);
glEnd();
}