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Index › Programming Questions & Help › Programs › animation: breaking flow ..
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animation: breaking flow .. (Read 820 times)
tamtom
animation: breaking flow ..
Feb 22nd, 2008, 2:25am  
Hello..

   I'm new with Processing, and i have the following problem.When i try to display an animation, the moving object lacks of smooth continuity..
   I tried various frameRate values, but the same thing happens..the continuity breaks.I also checked my ati graphics card but i can't find something that solves the problem..
   Should i make a setting on Proseccing or there is a problem in my graphics card? What can i do to have smooth animation with fine motion flow?
   
Thanks for your attention.
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tamtom
animation: breaking flow ..
Reply #1 - Feb 22nd, 2008, 6:02am  
i think that my problem is animation flickering...
The motion isnt steady, and the image flickers..
Please help!!
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antiplastik
Re: animation: breaking flow ..
Reply #2 - Feb 22nd, 2008, 5:00pm  
do you have the same problem with all animations? can you give us an example - some code or whatever?
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tamtom
Re: animation: breaking flow ..
Reply #3 - Feb 22nd, 2008, 5:58pm  
Quote:


int xpos = width/2;
int ypos = height/2;
int ballWth ;
int ballHgt ;
int xspeed ;
int yspeed ;

void setup(){
 size(800, 800);
 background(123);
 noStroke();
 frameRate(25);
 smooth();
 xspeed = 18;
 yspeed = 18;
 ballWth = 80;
 ballHgt = 80;
}
void draw(){
 background(123);
 ellipse(xpos, ypos, ballWth, ballHgt);
 
 
 
 xpos += xspeed;
 ypos += yspeed;
 if (xpos >= width  || xpos <=0){
     xspeed *= -1;
 }
 if (ypos >= height || ypos <= 0){
   yspeed *=-1;
 
}
}







this is my very simple animation code...
i can see the problem of non smooth movement in all renderers.. the ball in this code flickers a bit when moves and you can clearly see jumps on the movement..

i had the same problem in vvvv and flash, but in flash its better with bigger frameRate..For this reason i checked my graphics card and i also benchmarked, but i cant see any problem in my card!!

Please help, i like processing very much but its very annoying this problem!!
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extrapixel
Re: animation: breaking flow ..
Reply #4 - Feb 22nd, 2008, 7:12pm  
well, you're ball is jumping a distance of about 25pixels. Obviously you'll perceive that as "flickering". try a higher framerate and way smaller speeds. changing your speed / pos variables to float might be necessary. Also, opengl animates much smoother than the 2D renderer in my experience.

Quote:


import processing.opengl.*;

float xpos;
float ypos;
int ballWth ;
int ballHgt ;
float xspeed ;
float yspeed ;

void setup(){
 size(800, 800, OPENGL);
 background(123);
 noStroke();
 frameRate(100);
 smooth();
 xpos = width/2.0;
 ypos = height/2.0;
 xspeed = .3+random(2.5);
 yspeed = .3+random(2.5);
 ballWth = 80;
 ballHgt = 80;
}

void draw(){
 background(123);
 ellipse(xpos, ypos, ballWth, ballHgt);
 xpos += xspeed;
 ypos += yspeed;  
 if (xpos >= width  || xpos <=0){
   xspeed *= -1;
 }
 
 if (ypos >= height || ypos <= 0){
   yspeed *=-1;
 }
}

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