Hello,

I have been building this program and trying to make smooth moving curves that will move back and forth across the screen and I think my ramp or "return" section of this program is not working correctly. What I would like it to do is have the vertex points move back and forth so they effect the curve of the line. Thanks for any help. Here is the code.

float x1 = 0.0;
float x2 = 0.0;
float shake = 0.0;

void setup(){
size (400,400);
framerate(60);
}

void draw(){
background(204);
x1++;
x2--;
/*x1= x1 + (1.0 * shake);
if (x1 >= 50 || x1 <= 0){
shake = shake * -1;
}
else{
x2 =x2 -1.0;
if (x2<=0){
shake =1;
}

}*/
beginShape(LINE_STRIP);
curveVertex(84,  91);
curveVertex(x1+81,  91+x1);
curveVertex(68,  19);
curveVertex(21,  x1+17);
curveVertex(32+x1, 100+x2);
curveVertex(32+x1, 100);
endShape();
}