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/*
* Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the name of
* Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "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 BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "glut_wrap.h"
static GLenum frontface = GL_CCW;
static void
Init(void)
{
fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
fflush(stderr);
}
static void
Reshape(int width, int height)
{
glViewport(0, 0, (GLint)width, (GLint)height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
}
static void
Key(unsigned char key, int x, int y)
{
switch (key) {
case 'f':
frontface = (frontface == GL_CCW) ? GL_CW : GL_CCW;
glFrontFace(frontface);
break;
case 27:
exit(1);
default:
return;
}
glutPostRedisplay();
}
static void
Draw(void)
{
static GLboolean flags[3] = { 1, 0, 1};
static GLfloat color[3][3] = {
{ 0.3, 0.3, 0.9 },
{ 0.8, 0.0, 0.0 },
{ 0.0, 0.9, 0.0 }
};
static GLfloat vert[3][3] = {
{ 0.9, -0.9, 0.0 },
{ 0.9, 0.9, 0.0 },
{ -0.9, 0.0, 0.0 }
};
glClear(GL_COLOR_BUFFER_BIT);
glPolygonMode(GL_FRONT, GL_LINE);
glPolygonMode(GL_BACK, GL_POINT);
glVertexPointer(3, GL_FLOAT, 0, vert);
glColorPointer(3, GL_FLOAT, 0, color);
glEdgeFlagPointer(0, flags);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_EDGE_FLAG_ARRAY);
glDrawArrays(GL_TRIANGLES, 0, 3);
glutSwapBuffers();
}
int
main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitWindowPosition(0, 0);
glutInitWindowSize( 250, 250);
glutInitDisplayMode(GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE);
if (!glutCreateWindow(*argv)) {
exit(1);
}
glutReshapeFunc(Reshape);
glutKeyboardFunc(Key);
glutDisplayFunc(Draw);
Init();
glutMainLoop();
return 0;
}
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