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Problem with Pieslice
Joined: 07 Jul 2003
Posts: 14
Problem with Pieslice
hi suman
thanx for replying , here i`m giving code once again i`m doing
the same what you told but i guess problem is with this lib function
itself . i`m usning turboc ++ 3.0 compiler
------------------ Pieslice.c--------------
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int drawpie(int i)
{
/* request auto detection */
// circle(10,10,200);
setfillstyle(2,5);
pieslice(320,240,i,i+90,100); //when i=290 it works unexpected
getch();
cleardevice();
return 0;
}
main()
{
int i;
int gdriver = DETECT, gmode, errorcode;
initgraph(&gdriver, &gmode, "h:\tc\bgi");
errorcode = graphresult();
if (errorcode != grOk) /* an error occurred */
{
printf("Graphics error: %s
", grapherrormsg(errorcode));
getch();
exit(1); /* terminate with an error code */
}
for(i=20;i<450;i+=90)
drawpie(i);
}
/*
i`m not very sure but i think problem is
When i =290 then i+90 =380 ,
now what pieslice does is it apply mod 380%360=20
and after applying mod to both starting angle and ending angle
whichever is smaller it makes that one starting angle and otherone
ending angle .
plz suggest what could be done . is there any other third party
graphics library which can be used here ???
*/
Joined: 05 Jul 2003
Posts: 8
Problem with Pieslice
> hi
> don`t look for an alternative which does this look for a sol.-
> i advise to follow a do it u`r self kind of strategy
> Also if u want to learn c use a better compiler don`t user Tc use
gcc though
> slow it`s standareds compliant
> and i think u`r ques was abt c++.
> so jus check and give vars independently
> like
> i don`t work on windoze so have no idea abt params for the func.
>
> if( i+290 > 360)
> ang=360-i+290
> pieslice(params);
> or draw 2 arcs of same color wirhout an edge if u can`t do it
directly
> HTH
> -suman
ya suman ,
even i feel Tc is not a very good compiler many time it
throw some exception and come out from the tc editor . but i have
started i`ll try to implemente ur suggestion otherwise i wil always
start from 0 degree angle nothing else could be done i guess .
/* new members can see
http://groups.yahoo.com/group/Programmers-Town/messages
*/
Joined: 08 Jul 2003
Posts: 6
Problem with Pieslice
On Tue July 8 2003 17:57, arifali_007 wrote:
> hi suman
> thanx for replying , here i`m giving code once again i`m doing
> the same what you told but i guess problem is with this lib function
> itself . i`m usning turboc ++ 3.0 compiler
>
>
> ------------------ Pieslice.c--------------
> #include <graphics.h>
> #include <stdlib.h>
> #include <stdio.h>
> #include <conio.h>
>
> int drawpie(int i)
> {
> /* request auto detection */
> // circle(10,10,200);
> setfillstyle(2,5);
> pieslice(320,240,i,i+90,100); //when i=290 it works unexpected
> getch();
> cleardevice();
> return 0;
> }
> main()
> {
> int i;
> int gdriver = DETECT, gmode, errorcode;
> initgraph(&gdriver, &gmode, "h:\tc\bgi");
> errorcode = graphresult();
> if (errorcode != grOk) /* an error occurred */
> {
> printf("Graphics error: %s
", grapherrormsg(errorcode));
> getch();
> exit(1); /* terminate with an error code */
> }
>
> for(i=20;i<450;i+=90)
> drawpie(i);
> }
>
> /*
> i`m not very sure but i think problem is
> When i =290 then i+90 =380 ,
> now what pieslice does is it apply mod 380%360=20
> and after applying mod to both starting angle and ending angle
> whichever is smaller it makes that one starting angle and otherone
> ending angle .
>
> plz suggest what could be done . is there any other third party
> graphics library which can be used here ???
> */
hi
don`t look for an alternative which does this look for a sol.-
i advise to follow a do it u`r self kind of strategy
Also if u want to learn c use a better compiler don`t user Tc use gcc though
slow it`s standareds compliant
and i think u`r ques was abt c++.
so jus check and give vars independently
like
i don`t work on windoze so have no idea abt params for the func.
if( i+290 > 360)
ang=360-i+290
pieslice(params);
or draw 2 arcs of same color wirhout an edge if u can`t do it directly
HTH
-suman
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