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import peasy.*;

PeasyCam camera;

ArrayList<PVector> meshPos = new ArrayList();

float xStep = 20; 
float yStep = 20; 
int meshNUM = 20;

PShape meshStrip;

FloatList movingV = new FloatList();

void setup() {
    size(800, 500, P3D);
    
    camera = new PeasyCam(this, 400);
    
    meshStrip = createShape();
    
    for (int i=0; i<meshNUM; i++) {
        meshPos.add(new PVector( i * xStep, 0, 0) );
    }    
    
    meshStrip.beginShape(TRIANGLE_STRIP);
    meshStrip.stroke(0, 40);
    for (int i=0; i<meshPos.size(); i++) {
        meshStrip.vertex(meshPos.get(i).x, meshPos.get(i).y, meshPos.get(i).z);
        meshStrip.vertex(meshPos.get(i).x, meshPos.get(i).y + yStep, meshPos.get(i).z);        
    }
    meshStrip.endShape(CLOSE);
    
}


void draw() {
    background(120);
    
    for (int i=0; i<meshStrip.getVertexCount(); i+=1) {
        movingV.set(i, sin(radians(i * 360.0/meshStrip.getVertexCount() + frameCount * 2)) * 30);
        PVector _v = new PVector(meshStrip.getVertex(i).x, meshStrip.getVertex(i).y, movingV.get(i));
        meshStrip.setVertex(i, _v);
    }
    
    translate(-xStep * meshNUM * 0.5, 0);
    
    shape(meshStrip, 0, 0);
    
}