Visual C 2010 으로 컴파일하여 실행해 본 OpenGL 예제: Redbook 의 Teapots

Visual C 용으로 OpenGL 용 소스를 작성할 떼는 헤더 파일 gl.h 와 glu.h 는 사용하지 않아도 된다. glut.h 하나만 사용하면 된다. 컴파일할 때는 헤더 파일을 위한 경로나 라이브러리 파일을 위한 경로를 별도로 지정하지 않아도 된다. 즉, 명령

 

    cl  소스파일명

으로 소스파일이 컴파일되어 실행파일이 생성된다. 아래 예제는 OpenGL Redebook 에 소개되어 있는 cube 예제 소스이다.

 

/*
 * Copyright (c) 1993-1997, 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.
 *
 * US Government Users Restricted Rights
 * 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 * Unpublished-- rights reserved under the copyright laws of the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(R) is a registered trademark of Silicon Graphics, Inc.
 */

/*
 *  teapots.c
 *  This program demonstrates lots of material properties.
 *  A single light source illuminates the objects.
 */
#include <stdlib.h>
#include <GL/glut.h>

GLuint teapotList;

/*
 * Initialize depth buffer, projection matrix, light source, and lighting
 * model.  Do not specify a material property here.
 */
void init(void)
{
   GLfloat ambient[] = {0.0, 0.0, 0.0, 1.0};
   GLfloat diffuse[] = {1.0, 1.0, 1.0, 1.0};
   GLfloat specular[] = {1.0, 1.0, 1.0, 1.0};
   GLfloat position[] = {0.0, 3.0, 3.0, 0.0};

   GLfloat lmodel_ambient[] = {0.2, 0.2, 0.2, 1.0};
   GLfloat local_view[] = {0.0};

   glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
   glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
   glLightfv(GL_LIGHT0, GL_POSITION, position);
   glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
   glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, local_view);

   glFrontFace(GL_CW);
   glEnable(GL_LIGHTING);
   glEnable(GL_LIGHT0);
   glEnable(GL_AUTO_NORMAL);
   glEnable(GL_NORMALIZE);
   glEnable(GL_DEPTH_TEST);
/*  be efficient--make teapot display list  */
   teapotList = glGenLists(1);
   glNewList (teapotList, GL_COMPILE);
   glutSolidTeapot(1.0);
   glEndList ();
}

/*
 * Move object into position.  Use 3rd through 12th
 * parameters to specify the material property.  Draw a teapot.
 */
void renderTeapot(GLfloat x, GLfloat y,
   GLfloat ambr, GLfloat ambg, GLfloat ambb,
   GLfloat difr, GLfloat difg, GLfloat difb,
   GLfloat specr, GLfloat specg, GLfloat specb, GLfloat shine)
{
   GLfloat mat[4];

   glPushMatrix();
   glTranslatef(x, y, 0.0);
   mat[0] = ambr; mat[1] = ambg; mat[2] = ambb; mat[3] = 1.0;
   glMaterialfv(GL_FRONT, GL_AMBIENT, mat);
   mat[0] = difr; mat[1] = difg; mat[2] = difb;
   glMaterialfv(GL_FRONT, GL_DIFFUSE, mat);
   mat[0] = specr; mat[1] = specg; mat[2] = specb;
   glMaterialfv(GL_FRONT, GL_SPECULAR, mat);
   glMaterialf(GL_FRONT, GL_SHININESS, shine * 128.0);
   glCallList(teapotList);
   glPopMatrix();
}

/**
 *  First column:  emerald, jade, obsidian, pearl, ruby, turquoise
 *  2nd column:  brass, bronze, chrome, copper, gold, silver
 *  3rd column:  black, cyan, green, red, white, yellow plastic
 *  4th column:  black, cyan, green, red, white, yellow rubber
 */
void display(void)
{
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   renderTeapot(2.0, 17.0, 0.0215, 0.1745, 0.0215,
      0.07568, 0.61424, 0.07568, 0.633, 0.727811, 0.633, 0.6);
   renderTeapot(2.0, 14.0, 0.135, 0.2225, 0.1575,
      0.54, 0.89, 0.63, 0.316228, 0.316228, 0.316228, 0.1);
   renderTeapot(2.0, 11.0, 0.05375, 0.05, 0.06625,
      0.18275, 0.17, 0.22525, 0.332741, 0.328634, 0.346435, 0.3);
   renderTeapot(2.0, 8.0, 0.25, 0.20725, 0.20725,
      1, 0.829, 0.829, 0.296648, 0.296648, 0.296648, 0.088);
   renderTeapot(2.0, 5.0, 0.1745, 0.01175, 0.01175,
      0.61424, 0.04136, 0.04136, 0.727811, 0.626959, 0.626959, 0.6);
   renderTeapot(2.0, 2.0, 0.1, 0.18725, 0.1745,
      0.396, 0.74151, 0.69102, 0.297254, 0.30829, 0.306678, 0.1);
   renderTeapot(6.0, 17.0, 0.329412, 0.223529, 0.027451,
      0.780392, 0.568627, 0.113725, 0.992157, 0.941176, 0.807843,
      0.21794872);
   renderTeapot(6.0, 14.0, 0.2125, 0.1275, 0.054,
      0.714, 0.4284, 0.18144, 0.393548, 0.271906, 0.166721, 0.2);
   renderTeapot(6.0, 11.0, 0.25, 0.25, 0.25,
      0.4, 0.4, 0.4, 0.774597, 0.774597, 0.774597, 0.6);
   renderTeapot(6.0, 8.0, 0.19125, 0.0735, 0.0225,
      0.7038, 0.27048, 0.0828, 0.256777, 0.137622, 0.086014, 0.1);
   renderTeapot(6.0, 5.0, 0.24725, 0.1995, 0.0745,
      0.75164, 0.60648, 0.22648, 0.628281, 0.555802, 0.366065, 0.4);
   renderTeapot(6.0, 2.0, 0.19225, 0.19225, 0.19225,
      0.50754, 0.50754, 0.50754, 0.508273, 0.508273, 0.508273, 0.4);
   renderTeapot(10.0, 17.0, 0.0, 0.0, 0.0, 0.01, 0.01, 0.01,
      0.50, 0.50, 0.50, .25);
   renderTeapot(10.0, 14.0, 0.0, 0.1, 0.06, 0.0, 0.50980392, 0.50980392,
      0.50196078, 0.50196078, 0.50196078, .25);
   renderTeapot(10.0, 11.0, 0.0, 0.0, 0.0,
      0.1, 0.35, 0.1, 0.45, 0.55, 0.45, .25);
   renderTeapot(10.0, 8.0, 0.0, 0.0, 0.0, 0.5, 0.0, 0.0,
      0.7, 0.6, 0.6, .25);
   renderTeapot(10.0, 5.0, 0.0, 0.0, 0.0, 0.55, 0.55, 0.55,
      0.70, 0.70, 0.70, .25);
   renderTeapot(10.0, 2.0, 0.0, 0.0, 0.0, 0.5, 0.5, 0.0,
      0.60, 0.60, 0.50, .25);
   renderTeapot(14.0, 17.0, 0.02, 0.02, 0.02, 0.01, 0.01, 0.01,
      0.4, 0.4, 0.4, .078125);
   renderTeapot(14.0, 14.0, 0.0, 0.05, 0.05, 0.4, 0.5, 0.5,
      0.04, 0.7, 0.7, .078125);
   renderTeapot(14.0, 11.0, 0.0, 0.05, 0.0, 0.4, 0.5, 0.4,
      0.04, 0.7, 0.04, .078125);
   renderTeapot(14.0, 8.0, 0.05, 0.0, 0.0, 0.5, 0.4, 0.4,
      0.7, 0.04, 0.04, .078125);
   renderTeapot(14.0, 5.0, 0.05, 0.05, 0.05, 0.5, 0.5, 0.5,
      0.7, 0.7, 0.7, .078125);
   renderTeapot(14.0, 2.0, 0.05, 0.05, 0.0, 0.5, 0.5, 0.4,
      0.7, 0.7, 0.04, .078125);
   glFlush();
}

void reshape(int w, int h)
{
   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
   if (w <= h)
      glOrtho(0.0, 16.0, 0.0, 16.0*(GLfloat)h/(GLfloat)w,
              -10.0, 10.0);
   else
      glOrtho(0.0, 16.0*(GLfloat)w/(GLfloat)h, 0.0, 16.0,
              -10.0, 10.0);
   glMatrixMode(GL_MODELVIEW);
}

void keyboard(unsigned char key, int x, int y)
{
   switch (key) {
      case 27:
         exit(0);
         break;
   }
}

/*
 * Main Loop
 */
int main(int argc, char **argv)
{
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
   glutInitWindowSize(500, 600);
   glutInitWindowPosition(50,50);
   glutCreateWindow(argv[0]);
   init();
   glutReshapeFunc(reshape);
   glutDisplayFunc(display);
   glutKeyboardFunc (keyboard);
   glutMainLoop();
   return 0;
}

 

컴파일하기: cl teapots.c

실행하기: teapots

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