/*
* (c) Copyright 1993, Silicon Graphics, Inc.
* 1993-1995 Microsoft Corporation
*
* ALL RIGHTS RESERVED
*
* Please refer to OpenGL/readme.txt for additional information
*
*/
/*
* teapots.c
* This program demonstrates lots of material properties.
* A single light source illuminates the objects.
*/
#include "glos.h"
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glaux.h>
void myinit(void);
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);
void CALLBACK display(void);
void CALLBACK myReshape(GLsizei w, GLsizei h);
/* Initialize depth buffer, projection matrix, light source,
* and lighting model. Do not specify a material property here.
*/
void myinit(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);
glDepthFunc(GL_LESS);
}
/* 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)
{
float 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);
auxSolidTeapot(1.0);
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 CALLBACK 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 CALLBACK myReshape(GLsizei w, GLsizei h)
{
if (!h) return;
glViewport(0, 0, w, 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);
}
/* Main Loop
* Open window with initial window size, title bar,
* RGBA display mode, and handle input events.
*/
int main(int argc, char** argv)
{
auxInitDisplayMode (AUX_SINGLE | AUX_RGB | AUX_DEPTH16);
auxInitPosition (0, 0, 500, 600);
auxInitWindow ("Material Properties");
myinit();
auxReshapeFunc (myReshape);
auxMainLoop(display);
return(0);
}