TP-rendu/TP1-2/navigator.cpp

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2023-06-22 18:30:57 +00:00
#include <cstdlib>
// for mac osx
#ifdef __APPLE__
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#include <GLUT/glut.h>
#else
// only for windows
#ifdef _WIN32
#include <windows.h>
#endif
// for windows and linux
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/freeglut.h>
#include <math.h>
#endif
#include <iostream>
using namespace std;
#define SPEED 0.1 // OpenGL unit
#define ANG_SPEED 0.01 // degrees
double x_cam = 0.0;
double y_cam = 0.0;
double z_cam = 5.0;
double angleX_cam = 0.0;
double angleY_cam = -M_PI / 2;
void display()
{
/* define the projection transformation */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, 1, 1, 10);
/* define the viewing transformation */
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(
x_cam, y_cam, z_cam,
x_cam + cos(angleY_cam), y_cam + sin(angleX_cam), z_cam + sin(angleY_cam) * cos(angleX_cam),
0, cos(angleX_cam), 0);
/* clear window */
glClear(GL_COLOR_BUFFER_BIT);
// set current matrix as GL_MODELVIEW
glMatrixMode(GL_MODELVIEW);
// draw scene
// add a copy of the curr. matrix to the stack
glPushMatrix();
glPushMatrix();
// translate by -3 on the z
glTranslatef(0, 0, -3);
// set drawing color to red
glColor3f(1.0f, 0.0f, 0.0f);
// middle red teapot
glutWireTeapot(1);
// translate by 2 on the y
glTranslatef(0, 2, 0);
// set drawing color to blue
glColor3f(0.0f, 1.0f, 0.0f);
// rotate 90 deg around x
glRotatef(90, 1.0f, 0.0f, 0.0f);
// top green teapot
glutWireTeapot(1);
// pop the current matrix
glPopMatrix();
// translate -2 on y and -1 on z
glTranslatef(0, -2, -1);
// set drawing color to blue
glColor3f(0.0f, 0.0f, 1.0f);
// bottom blue teapot
glutWireTeapot(1);
// pop the current matrix
glPopMatrix();
/* flush drawing routines to the window */
glFlush();
}
// Function called everytime a key is pressed
void key(unsigned char key, int x, int y)
{
switch (key)
{
case 'z':
z_cam -= SPEED;
break;
case 's':
z_cam += SPEED;
break;
case 'q':
x_cam -= SPEED;
break;
case 'd':
x_cam += SPEED;
break;
case 'a':
y_cam -= SPEED;
break;
case 'e':
y_cam += SPEED;
break;
case 27:
exit(EXIT_SUCCESS);
break;
default:
break;
}
glutPostRedisplay();
}
void specialkey(int key, int x, int y)
{
switch (key)
{
case GLUT_KEY_LEFT:
angleY_cam -= ANG_SPEED;
break;
case GLUT_KEY_RIGHT:
angleY_cam += ANG_SPEED;
break;
case GLUT_KEY_DOWN:
angleX_cam -= ANG_SPEED;
break;
case GLUT_KEY_UP:
angleX_cam += ANG_SPEED;
break;
default:
break;
}
glutPostRedisplay();
}
void reshape(int width, int height)
{
/* define the viewport transformation */
glViewport(0, 0, width, height);
}
int main(int argc, char *argv[])
{
/* initialize GLUT, using any commandline parameters passed to the
program */
glutInit(&argc, argv);
/* setup the size, position, and display mode for new windows */
glutInitWindowSize(500, 500);
glutInitWindowPosition(0, 0);
glutInitDisplayMode(GLUT_RGB);
/* create and set up a window */
glutCreateWindow("hello, navigator!");
// Set up the callback functions
// for display
glutDisplayFunc(display);
// for the keyboard
glutKeyboardFunc(key);
// for special keys
glutSpecialFunc(specialkey);
// for reshaping
glutReshapeFunc(reshape);
/* tell GLUT to wait for events */
glutMainLoop();
}