update screen in 13h mode after a sec,min and hour --(whole number thing)

**GanglyLamb** · 03-10-2003

Hey
ive got a problem working with 13h mode ::sigh:: i now its old but still a good way to learn very basic graphic things anyway.
Im working on a screensaver...(its supposed to be a clock)
anyway ill post the code and explain my prob

Code:

int wijzers()
{
	struct time t;
	float pi=6.2831854,hoek_sec,hoek_min,begin=-1.57079635;
	int x,y,r,sec,min,i=1;
	while(!kbhit()){
		gettime(&t);
		sec=t.ti_sec;
		min=t.ti_min;

		/*SECONDs*/
		hoek_sec=0.10471975666666666666666666666667*sec;
		for(r=0;r<98;r++){
								x=cos(hoek_sec+begin)*r*1.2+160;
								y=sin(hoek_sec+begin)*r+100;
								setpix(14,x,y);
								}
		for(r=0;r<98;r++){
								x=cos(hoek_sec+begin)*r*1.2+160;
								y=sin(hoek_sec+begin)*r+100;
								setpix(0,x,y);
								}

		/*MINUTEs*/
		hoek_min=0.10471975666666666666666666666667*min;
		for(r=0;r<98;r++){
								x=cos(hoek_min+begin)*r*1.2+160;
								y=sin(hoek_min+begin)*r+100;
								setpix(14,x,y);
								}
		for(r=0;r<98;r++){
								x=cos(hoek_min+begin)*r*1.2+160;
								y=sin(hoek_min+begin)*r+100;
								setpix(0,x,y);
								}

		}


	return 0;
	}

so this function-and some others- should draw something like a watch. But if you look close at my code ull see that i keep updating the screen with setpix.

Now i want to update the second thing only on a whole second and the minute thing after one minute.Because now the clock keeps updating and updating, thus u get flickering screens,lines,pixels etc...
so actually i need a thing to determine wether a number is a whole number or not.
---thought i saw such a thread be4 :whole number:but couldnt find it with search thing on board--

PS: if its not clear what i just wrote say so because ive got the feeling that my english is kinda sh$$ty

::edit::
sry bout the sucky code writing (indentations) guess i still cant work with ctrl-C and ctrl-V

**Scarlet7** · 03-10-2003

You could try something like this:

Code:

#include <stdio.h>
#include <time.h>
#include <conio.h>

int main()
{
	int m=0,s=0;
	while(!kbhit())
	{
		time_t lNow =  time(NULL);
		struct tm stTimeStruct = *gmtime(&lNow);

		/*SECONDs*/
		if(stTimeStruct.tm_sec != s)
		{
		   s = stTimeStruct.tm_sec;
		   printf("Draw second hand	---> %d\n", s);
		}
		/*MINUTEs*/
		if(stTimeStruct.tm_min != m)
		{
		   m = stTimeStruct.tm_min;
		   printf("Draw MINUTE hand	======> %d\n", m);
		}
	}
	return 0;
}

**GanglyLamb** · 03-10-2003

hmm cant get yours to work scarlet...
wouldnt it be simpler to.....
im just guessing now actually:
to create a integer array and then check wether

Code:

gettime(&t);
sec=t.ti_sec;
min=t.ti_min;

sec and min are somewhere in that array... the only thing i need to now is when i have a full second and when a full minute...
because my cde works fine but the update of the screen has to be per -second-minute-houre.
So i was thinking about checking weather the sec, min and houre are whole numbers. And if i would declare them as a float then theres an exact point where these numbers are whole.

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update screen in 13h mode after a sec,min and hour --(whole number thing)