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forum.gifForum - iziBasic - Sujet n°1635

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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 257

actif  Sujet n° 1635  Drawing a circle

le 08/04/2009 @ 03:23
par Gary

Anonyme
My next project needs a circle drawn on the screen and I have taken a look at the code in IBClock, but I can't get it to work. I tried entering different numbers for H and M, but all that does is draw the hands of the clock not the circle. 

_DrawClock:
   I=H : IF I>=12 LET I=I-12
   I=M/60+I-3*PI/6
   X=COS(I)*20+120
   Y=SIN(I)*20+55
   LINE 120,55 TO X,Y
   I=M-15*PI/30
   X=COS(I)*25+120
   Y=SIN(I)*25+55
   LINE 120,55 TO X,Y
   I=S-15*PI/30
   X=COS(I)*30+120
   Y=SIN(I)*30+55
   LINE 120,55 TO X,Y
RETURN


I have a blank form defined and the code above in my code. At first nothing was printed on the screen. Then I gave H and M a value. It printed the hands of the clock not circle.

Can someone get me started? Once I get a circle to draw I can go from there.

Thanks
Gary
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Réponse n° 1
--------
le 09/04/2009 @ 10:13
par Gary

Anonyme

visiteur
 After studying the Drawclock routine I realized that it is really drawing the hands of the clock. If I would have looked further than my nose I would have seen the circle draw routine in Drawscreen, which is easy understand.

One more question.

What is the difference between HIGHRES and SETRES?

When I use HIGHRES it works, but when I use SETRES it don't and can't see any difference in the manual

In code Z=HIGHTRES(1) says Z would equal 1 if my screen has a highres screen. When I use this it also turns on the high resolution screen and Z=HIGHRES(0) turns it off. So what is SETRES used for and how is it used. Every time I used it I got either an error or the program acted strange.

Thanks
Gary
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Réponse n° 2
--------
le 19/04/2009 @ 12:48
par aldweb

Anonyme

visiteur
 Hello Gary,

The only difference between HIGHRES and SETRES is that HIGHRES is a function and returns a status of the resulting resolution mode when SETRES is a statement and returns nothing.
The internal code for these two keywords is therefore at 95% the same and it is shared (for obvious optimization reasons).

Cheers,
aldweb
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