int Gi_wait_click(int p[2])
{
int sig ;
G_display_image();
do {
sig = Gi_events(p) ;
} while (sig != -3) ;
return sig ;
}
int G_wait_key()
{
int p[2] ;
int sig ;
G_display_image();
do {
sig = Gi_events(p) ;
} while (sig < 0) ;
return sig ;
}
void draw() {
G_rgb(.1, .1, .1);
G_clear();
draw_object3ds(objs, num_objs, fov, light_pos, lm);
//printf("draw\n");
char fovstring[128];
sprintf(fovstring, "Fov: %.3f rad", fov);
char camerastring[128];
sprintf(camerastring, "Camera: x:0 y:0 z:%f", 0.0);
G_rgb(1, 1, 1);
G_draw_string(fovstring, 0, 580);
G_draw_string(camerastring, 0, 560);
G_display_image();
}
int test01()
{
int sig = 0 ;
int p[2], x,y, i ;
double degrees ;
swidth = 500 ;
sheight = 600 ;
if(! G_init_graphics (swidth, sheight)) return -1;
Draw(0);
G_display_image() ;
i = 0 ;
while(sig != 'q') {
sig = Gi_events(p) ;
x = p[0] ; y = p[1] ;
degrees = sqrt(x*x + y*y) ;
printf("i = %d sig = %d x = %d y = %d\n",i,sig,x,y) ;
i++ ;
if (sig == -4) {
// window resize
swidth = x ; sheight = y ;
}
Draw(degrees);
G_display_image() ;
}
G_close();
return 1;
}
int main()
{
double j ;
char q ;
G_init_graphics(601, 601) ;
// the original design was for a 400x400
// window and the object is centered on 200,200
// so we recenter it and make it larger
translate(-200, -200) ;
scale(2.0) ;
translate(300, 300) ;
j = 0 ;
while (j < 100) {
G_rgb(0,0,0) ;
G_clear() ;
G_rgb(0, 0.5, 1) ;
G_fill_polygon(x,y,n) ;
G_rgb(1, 1, 0) ;
G_polygon(x,y,n) ;
// q = G_wait_key() ;
G_display_image() ;
usleep(25000) ; // microseconds
translate(-300, -300) ;
scale(0.95) ;
rotate(4) ;
translate(300, 300) ;
j=j+1 ;
}
G_rgb(1,0,0) ;
G_fill_circle(300,300, 50) ;
q = G_wait_key() ;
}
int main()
{
G_init_graphics(600, 600);
for (int j = 0; j < 200; ++j)
{
{
usleep(20000);
G_rgb(drand48(),drand48(),drand48());
G_clear();
G_rgb(drand48(),drand48(),drand48());
G_fill_polygon(x,y,n) ;
G_display_image(); // clearing, choosing random colors
}
translate(-300, -300) ;
scale(0.98, 0.98) ;
rotate(3.0) ;
translate(300, 300) ;
}
int close = G_wait_key() ;
}
int test02(int numreps, int sleepflag, int microseconds)
{
double degrees ;
int i ;
swidth = 500 ;
sheight = 600 ;
if(! G_init_graphics (swidth, sheight)) return -1;
for (i = 0 ; i < numreps ; i++) {
degrees = i ;
Draw(degrees);
G_display_image() ;
if (sleepflag) usleep(microseconds) ;
}
G_close();
return 1;
}
int main()
{
double pwidth, pheight, bwidth ;
double angle,hx,hy,mx,my,sx,sy ;
double hours,minutes,seconds ;
double x,y,nx,ny,digit ;
int theta ; //INTERESTING that this MUST be int to avoid flicker-WHY?
double oldhourtheta,oldminutetheta,oldsecondtheta ;
char text[3] ;
double hms[3] ; // hours,minutes,seconds
G_init_graphics(600,600) ;
G_rgb (1,1,1) ;
G_fill_rectangle (0,0, 600,600) ;
// outer circle of the clock face
G_rgb (1,0,0) ; // red
theta = 0 ; // degrees
x = 225*cos(theta*M_PI/180) + 300 ;
y = 225*sin(theta*M_PI/180) + 300 ;
while (theta <= 360) {
theta = theta + 1 ;
nx = 225*cos(theta*M_PI/180) + 300 ;
ny = 225*sin(theta*M_PI/180) + 300 ;
G_line(x,y,nx,ny) ;
x = nx ;
y = ny ;
}
G_display_image() ;
// digits on the clock face
G_rgb (0,0,0) ; // black
theta = 90 ; // degrees
digit = 0 ;
while (theta > -270) {
theta = theta - 30 ;
digit = digit + 1 ;
nx = 200*cos(theta*M_PI/180) + 300 ;
ny = 200*sin(theta*M_PI/180) + 300 ;
if (digit >= 10) {
text[0] = '1' ;
text[1] = '0' + digit - 10 ;
text[2] = '\0' ;
}
else {
text[0] = '0' + digit ;
text[1] = '\0' ;
}
G_draw_string(text,nx-5,ny-5) ;
}
G_display_image() ;
oldsecondtheta = oldminutetheta = oldhourtheta = -10000000 ;
sx = sy = mx = my = hx = hy = 300 ;
while (0 < 1) {
/* watch out for SLIGHT FLAW : if one of the hands overlays another,
then if it is erased, you'll erase the other as well...this should
fix that...we erase them all and redraw them all */
get_timeD (hms) ;
hours = hms[0] ;
minutes = hms[1] ;
seconds = hms[2] ;
// set the second hand
theta = 90 - 6*seconds ;
if (theta != oldsecondtheta) {
G_rgb (1,1,1) ; // white
G_line(300,300,sx,sy) ;
G_line(300,300,mx,my) ;
G_line(300,300,hx,hy) ;
angle = theta*M_PI/180 ;
sx = 175*cos(angle) + 300 ;
sy = 175*sin(angle) + 300 ;
G_rgb (1,0,0) ; // red
G_line(300,300,sx,sy) ;
G_line(300,300,mx,my) ;
G_line(300,300,hx,hy) ;
G_display_image() ;
oldsecondtheta = theta ;
}
// set the minute hand
theta = 90 - 6*(minutes + seconds/60.0) ;
if (theta != oldminutetheta) {
G_rgb (1,1,1) ; // white
G_line(300,300,sx,sy) ;
G_line(300,300,mx,my) ;
G_line(300,300,hx,hy) ;
angle = theta*M_PI/180 ;
mx = 140*cos(angle) + 300 ;
my = 140*sin(angle) + 300 ;
G_rgb (1,0,0) ; // red
G_line(300,300,sx,sy) ;
G_line(300,300,mx,my) ;
G_line(300,300,hx,hy) ;
G_display_image() ;
oldminutetheta = theta ;
}
// set the hour hand
theta = 90 - 30*(hours + minutes/60.0 + seconds/3600.0) ;
if (theta != oldhourtheta) {
G_rgb (1,1,1) ; // white
G_line(300,300,sx,sy) ;
G_line(300,300,mx,my) ;
G_line(300,300,hx,hy) ;
angle = theta*M_PI/180 ;
hx = 75*cos(angle) + 300 ;
hy = 75*sin(angle) + 300 ;
G_rgb (1,0,0) ; // red
G_line(300,300,sx,sy) ;
G_line(300,300,mx,my) ;
G_line(300,300,hx,hy) ;
G_display_image() ;
oldhourtheta = theta ;
}
} // end while (0 < 1)
}
int main()
{
// analog clock using double buffering...simpler
double hours,minutes,seconds,x,y,nx,ny,theta,digit ;
double hx,hy,mx,my,sx,sy,angle ;
double oldhourtheta,oldminutetheta,oldsecondtheta ;
char text[3] ;
double hms[3] ;
double xx[100],yy[100] ;
int num ;
G_init_graphics(600,600) ;
while (0 < 1) {
// blank the window
G_rgb(0.3, 0.3, 0.3) ;
G_clear() ;
// outer circle of the clock face
G_rgb(0,0,1) ;
G_fill_circle(300,300,230) ;
G_rgb (1,0.5,0) ;
G_fill_circle(300,300,220) ;
// digits on the clock face
G_rgb (0,0,0) ;
theta = 90 ; // degrees
digit = 0 ;
while (theta > -270) {
theta = theta - 30 ;
digit = digit + 1 ;
nx = 200*cos(theta*M_PI/180) + 300 ;
ny = 200*sin(theta*M_PI/180) + 300 ;
if (digit >= 10) {
text[0] = '1' ;
text[1] = '0' + digit - 10 ;
text[2] = '\0' ;
}
else {
text[0] = '0' + digit ;
text[1] = '\0' ;
}
G_draw_string(text,nx-5,ny-5) ;
}
// get_timeD(hms) ;
// hours = hms[0] ;
// minutes = hms[1] ;
// seconds = hms[2] ;
printf("enter hours minutes seconds") ;
scanf("%lf %lf %lf",&hours,&minutes,&seconds) ;
G_rgb (0,0,0) ;
// set the second hand
theta = 90 - 6*seconds ;
angle = theta*M_PI/180 ;
sx = 175*cos(angle) + 300 ;
sy = 175*sin(angle) + 300 ;
// G_line(300,300,sx,sy) ;
num = make_arrow (300,300,
sx,sy,
3.0,
xx,yy) ;
G_fill_polygon(xx,yy,num) ;
// set the minute hand
theta = 90 - 6*(minutes + seconds/60.0) ;
angle = theta*M_PI/180 ;
mx = 140*cos(angle) + 300 ;
my = 140*sin(angle) + 300 ;
// G_line(300,300,mx,my) ;
num = make_arrow (300,300,
mx,my,
3.0,
xx,yy) ;
G_fill_polygon(xx,yy,num) ;
// set the hour hand
theta = 90 - 30*(hours + minutes/60.0 + seconds/3600.0) ;
angle = theta*M_PI/180 ;
hx = 75*cos(angle) + 300 ;
hy = 75*sin(angle) + 300 ;
// G_line(300,300,hx,hy) ;
num = make_arrow (300,300,
hx,hy,
3.0,
xx,yy) ;
G_fill_polygon(xx,yy,num) ;
G_rgb(0,0,0) ;
G_fill_circle(300,300,12) ;
G_display_image() ;
break ;
} // end while (0 < 1)
G_save_image_to_file("clock.xwd") ;
}