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newq.cpp
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newq.cpp
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#include <math.h>
#include <GL/glut.h>
#include <stdio.h>
#include <string.h>
//#include <cstdlib>
//if you got error in exit() by compiler then does not incluede stdlib.h because //exit() is also defined in glut.h file.
float angle=0.0,deltaAngle = 0.0,ratio;
float x=0.0f,y=0.0,z=0.0f;
float lx=0.0f,ly=0.0f,lz=-1.0f;
float deltadistance = 0,h,w;
//int font=(int)GLUT_BITMAP_8_BY_13;
static GLint walls_display_list;
int bitmapHeight=13;
int frame,time,timebase=0;
char s[30];
void initWindow();
void changeSize(int w1, int h1)
{
// Prevent a divide by zero, when window is too short
// (you cant make a window of zero width).
if(h1 == 0)
h1 = 1;
w = w1;
h = h1;
ratio = 1.0f * w / h;
// Reset the coordinate system before modifying
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// Set the viewport to be the entire window
glViewport(0, 0, w, h);
glClearColor (0.15,0.1,0.13,0 );
gluPerspective( /* field of view in degree */ 100.0,
/* aspect ratio */ 1.0,
/* Z near */ 1.0, /* Z far */ 70.0);
gluLookAt(0.0, 0.0, 5.0, /* eye is at (0,0,30) */
0.0, 0.0, 0.0, /* center is at (0,0,0) */
0.0, 1.0, 0.);
}
void initScene() {
}
/*void renderBitmapString(float x, float y, void *font,char *string)
{
char *c;
// set position to start drawing fonts
glRasterPos2f(x, y);
// loop all the characters in the string
for (c=string; *c != '\0'; c++) {
glutBitmapCharacter(font, *c);
}
}*/
void mainscene(){
glBegin(GL_LINES);
glVertex2f( deltadistance/2, -(deltadistance/2) );
glVertex2f(deltadistance/2, -(deltadistance*2) );
glVertex2f( -deltadistance/2, -(deltadistance/2) );
glVertex2f( -deltadistance/2, -(deltadistance*2));
glVertex2f( deltadistance/2, -deltadistance/2 );
glVertex2f( -deltadistance/2, -deltadistance/2);
glVertex2f( deltadistance/2, -deltadistance/2 );
glVertex2f( lx+deltadistance/2,ly);
glVertex2f(-deltadistance/2, -deltadistance/2 );
glVertex2f( lx-deltadistance/2,ly);
glVertex2f(lx-deltadistance/2,ly);
glVertex2f(lx+deltadistance/2,ly);
glVertex2f( -deltadistance/2, -(deltadistance*2) );
glVertex2f( deltadistance/2, -(deltadistance*2) );
glVertex2f( deltadistance/2, -(deltadistance*2));
glVertex2f( lx+deltadistance/2,-ly);
glVertex2f( -deltadistance/2, -(deltadistance*2) );
glVertex2f( lx-deltadistance/2,-ly);
glVertex2f(lx-deltadistance/2,-ly);
glVertex2f(lx+deltadistance/2,-ly);
glVertex2f(lx-deltadistance/2,ly);
glVertex2f(lx-deltadistance/2,-ly);
glVertex2f(lx+deltadistance/2,ly);
glVertex2f(lx+deltadistance/2,-ly);
glEnd();}
void renderScene(void) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1.0f, 1.0f, 0.0f);
mainscene();
glutSwapBuffers();
glutPostRedisplay();
glFlush();
}
void processNormalKeys(unsigned char key, int x, int y) {
if (key == 27)
exit(0);
}
void pressKey(int key, int x, int y) {
switch (key) {
case GLUT_KEY_LEFT : lx=lx-0.1;break;
case GLUT_KEY_RIGHT : lx=lx+0.1;break;
case GLUT_KEY_UP : ly=ly+0.1;deltadistance+=0.1; break;
case GLUT_KEY_DOWN :ly=ly-0.1;deltadistance-=0.1; break;
}
}
void releaseKey(int key, int x, int y) {
switch (key) {
case GLUT_KEY_LEFT :
break;
case GLUT_KEY_RIGHT :
break;
case GLUT_KEY_UP :
break;
case GLUT_KEY_DOWN :
break;
}
}
void initWindow() {
//glutIgnoreKeyRepeat(1);
glutKeyboardFunc(processNormalKeys);
glutSpecialFunc(pressKey);
//glutSpecialUpFunc(releaseKey);
glutDisplayFunc(renderScene);
// glutIdleFunc(renderScene);
glutReshapeFunc(changeSize);
initScene();
}
int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
glutInitWindowPosition(100,100);
glutInitWindowSize(640,360);
glutCreateWindow("ktech ImageResonatorSystem");
// register all callbacks
initWindow();
glutMainLoop();
return(0);
}