137 lines
3.1 KiB
C++
Executable file
137 lines
3.1 KiB
C++
Executable file
#include <stdlib.h>
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// for mac osx
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#ifdef __APPLE__
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#include <OpenGL/gl.h>
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#include <OpenGL/glu.h>
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#include <GLUT/glut.h>
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#else
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// only for windows
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#ifdef _WIN32
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#include <windows.h>
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#endif
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// for windows and linux
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include <GL/freeglut.h>
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#include <math.h>
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#endif
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bool solidMode = false;
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double angle = 0;
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// function called everytime the windows is refreshed
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void display()
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// define the projection transformation
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(60, 1, 1, 10);
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// define the viewing transformation
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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gluLookAt(3 * cos(angle), 0, 3 * sin(angle), 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
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// clear window
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glClear(GL_COLOR_BUFFER_BIT);
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// draw scene
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// glutWireTeapot(.5);
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// glutSolidTeacup(0.5);
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if (solidMode)
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{
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glutSolidTorus(0.25, 0.5, 100, 100);
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}
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else
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{
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glutWireTorus(0.25, 0.5, 100, 100);
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}
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// flush drawing routines to the window
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glFlush();
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angle += 0.001;
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glutPostRedisplay();
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}
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// Function called everytime a key is pressed
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void key(unsigned char key, int x, int y)
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{
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switch (key)
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{
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case 'r':
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angle += 0.1;
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break;
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case 'w':
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solidMode = !solidMode;
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break;
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// the 'esc' key
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case 27:
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// the 'q' key
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case 'q':
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exit(EXIT_SUCCESS);
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break;
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default:
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break;
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}
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glutPostRedisplay();
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}
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// Function called every time the main window is resized
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void reshape(int width, int height)
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{
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// define the viewport transformation;
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glViewport(0, 0, width, height);
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}
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// Main routine
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int main(int argc, char *argv[])
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{
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// initialize GLUT, using any commandline parameters passed to the
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// program
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glutInit(&argc, argv);
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// setup the size, position, and display mode for new windows
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glutInitWindowSize(500, 500);
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glutInitWindowPosition(0, 0);
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glutInitDisplayMode(GLUT_RGB);
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// create and set up a window
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glutCreateWindow("Hello, teapot!");
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// Set up the callback functions:
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// for display
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glutDisplayFunc(display);
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// for the keyboard
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glutKeyboardFunc(key);
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// for reshaping
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glutReshapeFunc(reshape);
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// lights from tp3
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GLfloat light_ambient[] = {0.0, 0.0, 0.0, 1.0}; // the ambient component
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GLfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0}; // the diffuse component
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GLfloat light_specular[] = {1.0, 1.0, 1.0, 1.0}; // the specular component
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GLfloat light_position[] = {1.0, 1.0, 1.0, 0.0}; // the light position
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// set the components to the first light
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glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
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glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
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glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
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glLightfv(GL_LIGHT0, GL_POSITION, light_position);
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// activate lighting effects
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glEnable(GL_LIGHTING);
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// turn on the first light
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glEnable(GL_LIGHT0);
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glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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// tell GLUT to wait for events
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glutMainLoop();
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}
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