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

This is a discussion on update screen in 13h mode after a sec,min and hour --(whole number thing) within the C Programming forums, part of the General Programming Boards category; Hey ive got a problem working with 13h mode ::sigh:: i now its old but still a good way to ...

  1. #1
    and the Hat of Clumsiness GanglyLamb's Avatar
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    update screen in 13h mode after a sec,min and hour --(whole number thing)

    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

  2. #2
    Registered User
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    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;
    }

  3. #3
    and the Hat of Clumsiness GanglyLamb's Avatar
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    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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