hi everyone...

I#m also into learning processing now. and i always try to get all my problems soved by myself, but on thisone i really got stuck....

i got a simple code of movinge shapes in an array.
the outer points are changing direction as they get to a certain width or height. but some of the points in the array change differently which makes them move away from the other points...
is there a mistake in the "if-loop"?

the second thing i tried to figure out is the opengl antialiasing issue. i cant get the shape to be smooth in opengl mode. the regular mode works well, but cannot handle so many lines.

maybe someone can give me a hint where to look into to get rid of this problems. thanks a lot...

and heres the code:


import processing.opengl.*;

int bezierCount = 500;
float[] pt1x = new float[bezierCount];
float[] pt1y = new float[bezierCount];
float[] pt2x = new float[bezierCount];
float[] pt2y = new float[bezierCount];
float[] pt3x = new float[bezierCount];
float[] pt3y = new float[bezierCount];
float[] pt4x = new float[bezierCount];
float[] pt4y = new float[bezierCount];
float[] xspeed = new float [bezierCount];
float[] yspeed = new float [bezierCount];
float[] xspeed4 = new float [bezierCount];
float[] yspeed4 = new float [bezierCount];
float[] strokeAlpha = new float [bezierCount];

void setup(){
 size (800,600,OPENGL);
 background (255);
 noFill();
 hint (ENABLE_OPENGL_4X_SMOOTH);
 for (int i=0; i<bezierCount; i++){
   pt1x[i] = 10+i;
   pt1y[i] = 10+i;
   pt2x[i] = width/2-10;
   pt2y[i] = height/2-10;
   pt3x[i] = width/2+10;
   pt3y[i] = height/2+10;
   pt4x[i] = 10+i;
   pt4y[i] = 10+i;
   xspeed[i] = 8;
   yspeed[i] = 3;
   xspeed4[i] = 3;
   yspeed4[i] =7;
   strokeAlpha[i] = 255;
 }
}

void draw (){
 background(255);
 for (int i=0; i<bezierCount; i++){
   strokeWeight (1);
   stroke (91+(i*(int)164/bezierCount),0+(i*(int)193/bezierCount),84-(i*(int)84/bezierCoun
t),strokeAlpha[i]);
   beginShape();
   vertex (pt1x[i], pt1y[i]);
   bezierVertex (pt2x[i], pt2y[i], pt3x[i], pt3y[i], pt4x[i], pt4y[i]);
   endShape();
   pt1x[i]+=xspeed[i];
   pt1y[i]+=yspeed[i];
   pt4x[i]+=xspeed4[i];
   pt4y[i]+=yspeed4[i];

 if (pt1x[i] >= width*2 || pt1x[i] <= -width){
   xspeed[i]*= -1;
 }

 if (pt1y[i] >= height*2|| pt1y[i] <= -height){
   yspeed[i]*=-1;
 }
 
 if (pt4x[i] >= width*2|| pt4x[i] <= -width){
   xspeed4[i]*=-1;
 }

 if (pt4y[i] >= height*2 || pt4y[i] <= -height){
   yspeed4[i]*=-1;
 }
}
}