| void CGLMgrDlg::Box(GLdouble x0, GLdouble x1, GLdouble y0, GLdouble y1, GLdouble z0, GLdouble z1, GLenum type) { static GLdouble n[6][3] = { {-1.0, 0.0, 0.0}, {0.0, 1.0, 0.0}, {1.0, 0.0, 0.0}, {0.0, -1.0, 0.0}, {0.0, 0.0, 1.0}, {0.0, 0.0, -1.0} }; static GLint faces[6][4] = { { 0, 1, 2, 3 }, { 3, 2, 6, 7 }, { 7, 6, 5, 4 }, { 4, 5, 1, 0 }, { 5, 6, 2, 1 }, { 7, 4, 0, 3 } }; GLdouble v[8][3], tmp; GLint i; if (x0 > x1) { tmp = x0; x0 = x1; x1 = tmp; } if (y0 > y1) { tmp = y0; y0 = y1; y1 = tmp; } if (z0 > z1) { tmp = z0; z0 = z1; z1 = tmp; } v[0][0] = v[1][0] = v[2][0] = v[3][0] = x0; v[4][0] = v[5][0] = v[6][0] = v[7][0] = x1; v[0][1] = v[1][1] = v[4][1] = v[5][1] = y0; v[2][1] = v[3][1] = v[6][1] = v[7][1] = y1; v[0][2] = v[3][2] = v[4][2] = v[7][2] = z0; v[1][2] = v[2][2] = v[5][2] = v[6][2] = z1; for (i = 0; i < 6; i++) { glBegin(type); glNormal3dv(&n[i][0]); glVertex3dv(&v[faces[i][0]][0]); glNormal3dv(&n[i][0]); glVertex3dv(&v[faces[i][1]][0]); glNormal3dv(&n[i][0]); glVertex3dv(&v[faces[i][2]][0]); glNormal3dv(&n[i][0]); glVertex3dv(&v[faces[i][3]][0]); glEnd(); } } void CGLMgrDlg::SolidBox(double width, double height, double depth) { Box(-width/(GLdouble)2., width/(GLdouble)2., -height/(GLdouble)2., height/(GLdouble)2.,-depth/(GLdouble)2., depth/(GLdouble)2., GL_QUADS); } |
| /* * Wire Box + Scale */ glPushMatrix (); glColor3f (1.0, 1.0, 1.0); glScaled (50.0, 25.0, 25.0); glutWireCube (1); glPopMatrix (); |
| #include <GL/glut.h> #include <math.h> //angle of rotation float xpos = 0, ypos = 0, zpos = 0, xrot = 0, yrot = 90, angle=0.0; void init (void) { glEnable (GL_DEPTH_TEST); //enable the depth testing /* * if enable lighting wire geometry some line don't display */ //glEnable (GL_LIGHTING); //enable the lighting glEnable (GL_LIGHT0); //enable LIGHT0, our Diffuse Light glShadeModel (GL_FLAT); //set the shader to smooth shader } void drawing() { /* * Wire Box */ glPushMatrix (); glColor3f (1.0, 1.0, 1.0); glRotatef (45, 0.0, 1.0, 0.0); glutWireCube (50); glPopMatrix (); } void display (void) { glClearColor (0.0,0.0,0.0,1.0); //clear the screen to black glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //clear the color buffer and the depth buffer glLoadIdentity(); /* * camera position, x,y,z, looking at x,y,z, Up Positions of the camera */ gluLookAt ( 0.0, 0.0, 190.0,/* camera */ 0.0, 0.0, 0.0, /* lens towards */ 0.0, 1.0, 0.0 /* up-vector */ ); /* * start drawing object */ drawing(); //call the cube drawing function glutSwapBuffers(); //swap the buffers angle+=0.1; //increase the angle } void reshape (int w, int h) { glViewport (0, 0, (GLsizei)w, (GLsizei)h); //set the viewport to the current window specifications /* * Projector Projection Parameter */ glMatrixMode (GL_PROJECTION); //set the matrix to projection glLoadIdentity (); gluPerspective (33.5, 4.0/3.0, 140.0, 300); //set the perspective (angle of sight, width, height, , depth) glMatrixMode (GL_MODELVIEW); //set the matrix back to model } void keyboard (unsigned char key, int x, int y) { if (key=='q') { xrot += 1; if (xrot >360) xrot -= 360; } if (key=='z') { xrot -= 1; if (xrot < -360) xrot += 360; } if (key=='w') { float xrotrad, yrotrad; yrotrad = (yrot / 180 * 3.141592654f); xrotrad = (xrot / 180 * 3.141592654f); xpos += float(sin(yrotrad)) ; zpos -= float(cos(yrotrad)) ; ypos -= float(sin(xrotrad)) ; } if (key=='s') { float xrotrad, yrotrad; yrotrad = (yrot / 180 * 3.141592654f); xrotrad = (xrot / 180 * 3.141592654f); xpos -= float(sin(yrotrad)); zpos += float(cos(yrotrad)) ; ypos += float(sin(xrotrad)); } if (key=='d') { yrot += 1; if (yrot >360) yrot -= 360; } if (key=='a') { yrot -= 1; if (yrot < -360)yrot += 360; } if (key==27) { glutLeaveGameMode(); //set the resolution how it was exit(0); //quit the program } } int main (int argc, char **argv) { glutInit (&argc, argv); glutInitDisplayMode (GLUT_DOUBLE | GLUT_DEPTH); //set the display to Double buffer, with depth glutGameModeString( "1024x768:32@30" ); //the settings for fullscreen mode glutEnterGameMode(); //set glut to fullscreen using the settings in the line above init (); //call the init function glutDisplayFunc (display); //use the display function to draw everything glutIdleFunc (display); //update any variables in display, display can be changed to anyhing, as long as you move the variables to be updated, in this case, angle++; glutReshapeFunc (reshape); //reshape the window accordingly glutKeyboardFunc (keyboard); //check the keyboard glutMainLoop (); //call the main loop return 0; } |
| glutInitDisplayMode (GLUT_DOUBLE | GLUT_DEPTH); //set the display to Double buffer, with depth |
| glutGameModeString( "1024x768:32@30" ); //the settings for fullscreen mode |
| glutEnterGameMode(); //set glut to fullscreen using the settings in the line above |
| glutLeaveGameMode(); //set the resolution how it was |
| glutKeyboardFunc (keyboard); //check the keyboard |
| void keyboard (unsigned char key, int x, int y) { if (key==27) { glutLeaveGameMode(); //set the resolution how it was exit(0); //quit the program } } |
| glutSwapBuffers(); //swap the buffers |
