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 main(){
double ax[100], ay[100], bx[100], by[100];
int anum, bnum;
G_init_graphics(WINDOW,WINDOW);
G_rgb(0,0,0);
G_clear();
G_clear(1,1,1);
G_rgb(1,1,1);
G_draw_string("Save", 0,585);
G_rgb(0,1,0);
anum = clickandsave(ax,ay);
my_fill_polygon(ax, ay, anum);
G_rgb(1,0,0);
bnum = clickandsave(bx, by);
//printf("anum: %d bnum %d \n", anum, bnum);
my_fill_polygon(bx,by,bnum);
G_wait_key();
}
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()
{
double swidth, sheight ;
double lowleftx, lowlefty, width, height ;
double x[10],y[10] ;
double numpoints,q, x0,y0,x1,y1 ;
double p[2] ;
// must do this before you do 'almost' any other
// graphical tasks
swidth = 400 ; sheight = 400 ;
G_init_graphics (swidth, sheight) ;
// draw a point, a line, some rectangles, some triangles
G_rgb(1, 0, 0) ; // red
G_point(200, 380) ;
G_rgb(0, 1, 0) ; // green
// G_line (0, 0, 400, 400) ; // won't show if part is off screen
G_line (0, 0, 399, 399) ;
G_rgb(0, 0, 1) ; // blue
lowleftx = 200 ; lowlefty = 50 ; width = 10 ; height = 30 ;
G_rectangle (lowleftx, lowlefty, width, height) ;
lowleftx = 250 ;
G_fill_rectangle (lowleftx, lowlefty, width, height) ;
G_rgb(1, 1, 0) ; // yellow
G_triangle (10, 300, 40,300, 60,250) ;
G_fill_triangle (10,100, 40,100, 60,150) ;
G_rgb(1, 0.5, 0) ; // orange
G_circle (100, 300, 75) ;
G_fill_circle (370, 200, 50) ;
// prints text in your graphics window
G_rgb(0, 0, 0) ; // black
G_draw_string ("hello",300,100) ;
// draw a polygon
x[0] = 100 ; y[0] = 100 ;
x[1] = 100 ; y[1] = 300 ;
x[2] = 300 ; y[2] = 300 ;
x[3] = 300 ; y[3] = 100 ;
x[4] = 200 ; y[4] = 175 ;
numpoints = 5 ;
G_polygon (x,y,numpoints) ;
q = G_wait_key() ; // pause to look ...any key to continue
G_rgb (0.4, 0.2, 0.1) ; // brown
G_fill_polygon (x,y,numpoints) ;
G_rgb (0.5, 0.8, 0.4) ;// what color is this?
G_wait_click(p) ; // wait for a mouse click
x0 = p[0] ; y0 = p[1] ; // extract coordinates
G_fill_rectangle (x0-2, y0-2, 4,4) ;// mark the clicked point
G_wait_click(p) ;
x1 = p[0] ; y1 = p[1] ;
G_fill_rectangle (x1-2, y1-2, 4,4) ;
G_rgb (0.5, 0.5, 0.5) ; // a grey
G_line (x0,y0, x1,y1) ;
q = G_wait_key() ; // pause again before exit
G_save_image_to_file ("t01c.xwd") ;
G_close() ; // terminate graphics...probably not fatal if forgotten
}
int main()
{
int swidth, sheight ;
double lowleftx, lowlefty, width, height ;
double x[10],y[10] ;
double numpoints,q, x0,y0,x1,y1 ;
double p[2] ;
int i ;
// must do this before you do 'almost' any other
// graphical tasks
swidth = 400 ; sheight = 500 ;
G_init_graphics (swidth, sheight) ;
// draw a point, a line, some rectangles, some triangles
G_rgb(1, 0, 0) ; // red
G_point(200, 380) ;
G_fill_rectangle (300,400, 50, 20) ;
G_rgb(0, 1, 0) ; // green
// G_line (0, 0, 400, 400) ; // won't show if part is off screen
G_line (0, 0, 399, 399) ;
G_fill_triangle(50, 400, 100,400, 150,475) ;
G_rgb(0, 0, 1) ; // blue
lowleftx = 200 ; lowlefty = 50 ; width = 10 ; height = 30 ;
G_rectangle (lowleftx, lowlefty, width, height) ;
lowleftx = 250 ;
G_fill_rectangle (lowleftx, lowlefty, width, height) ;
G_rgb(1, 1, 0) ; // yellow
G_triangle (10, 300, 40,300, 60,250) ;
G_fill_triangle (10,100, 40,100, 60,150) ;
G_rgb(1, 0.5, 0) ; // orange
G_circle (100, 300, 75) ;
G_fill_circle (370, 200, 50) ;
// prints text in your graphics window
G_rgb(0, 0, 0) ; // black
G_draw_string ("hello",300,100) ;
// draw a polygon
x[0] = 100 ; y[0] = 100 ;
x[1] = 100 ; y[1] = 300 ;
x[2] = 300 ; y[2] = 300 ;
x[3] = 300 ; y[3] = 100 ;
x[4] = 200 ; y[4] = 175 ;
numpoints = 5 ;
G_polygon (x,y,numpoints) ;
G_rgb (0.4, 0.2, 0.1) ; // brown
G_fill_polygon (x,y,numpoints) ;
G_rgb (0.5, 0.8, 0.4) ;// what color is this?
int xc,yc ;
int pixel ;
int rgbI[3] ;
double rgb[3] ;
G_wait_click(p) ;
xc = p[0] ; yc = p[1] ;
while (yc > 20) {
printf("%d %d\n",xc,yc) ;
pixel = G_get_pixel(xc,yc) ;
G_convert_pixel_to_rgbI(pixel, rgbI) ;
G_convert_rgbI_to_rgb(rgbI, rgb) ;
printf("pixel = %x\n",pixel) ;
printf("%3d %3d %3d\n",rgbI[0],rgbI[1],rgbI[2]) ;
printf("%lf %lf %lf\n",rgb[0],rgb[1],rgb[2]) ;
printf("\n") ;
G_wait_click(p) ;
xc = p[0] ; yc = p[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") ;
}
