Hi,

I looked at the example, where an ellipse is following a curve made by a Line_STRIP, but is it possible to somehow make an ellipse follow a bezier curve?

I looked at this example, but could not figure out how to modify it ... should I try something completely different, or should I just modify this?

int e1_size = 18;
float e1_x, e1_y = 0;
float e1_speed = 1.0;
int e1_direction = 1;


void setup()
{
 size(200, 200);
 stroke(102);
 ellipseMode(CENTER);
 smooth();
 framerate(30);
}

void draw()
{
 background(0);
 
 stroke(102);
 
 beginShape(LINE_STRIP);
 for(int i=0; i<width; i++) {
  vertex(i, singraph((float)i/width)*height);
 }
 endShape();
 
 
 e1_x += e1_speed * e1_direction;
 if (e1_x > width || e1_x < 0) {
   e1_direction = e1_direction * -1;
 }
 e1_y = singraph((float)e1_x/width)*height;
 noStroke();
 fill(255);
 ellipse(e1_x, e1_y, e1_size, e1_size);
 
}

float singraph(float sa) {
 sa = (sa - 0.5) * 1.0; //scale from -1 to 1
 sa = sin(sa*PI)/2 + 0.5;
 return sa;
}

float quad(float sa) {
 return sa*sa*sa*sa;
}

float hump(float sa) {
 sa = (sa - 0.5) * 2; //scale from -2 to 2
 sa = sa*sa;
 if(sa > 1) { sa = 1; }
 return 1-sa;
}