#trialerror

OLD CODE

boolean saveOneFrame = false; import processing.pdf.*;

final int drawingWidth = 600; final int drawingHeight = 600; float d_step = 0.001; float size = 200; float k = 10;

void setup() {  size(600, 600); }

void draw() {

 if (saveOneFrame == true) {    beginRecord(PDF, "01.09.pdf");  }

 background(255, 255, 255);  float centerX = drawingWidth/2;  float centerY = drawingWidth/2;

 k = 1.0/6.0;  for (float i = 0; i < frameCount*PI; i += d_step) {    float x = size*cos(k*i)*cos(i);    float y = size*cos(k*i)*sin(i);

   point(x+centerX, y+centerY);  }

 if (saveOneFrame == true) {    endRecord();    saveOneFrame = false;  } }

void mousePressed() {  saveOneFrame = true; }

NEW CODE > with the outline of the shape

import processing.pdf.*;

final int drawingWidth = 1200; final int drawingHeight = 1200; float size = 500;

void setup() {  size(1200, 1200);

 background(255, 255, 255);

 // Only once  noLoop(); }

void draw() {

 // Begin saving the PDF  beginRecord(PDF, "01.09.2.pdf");

 // We only want the outline of the shape  noFill();

 // Width of the line. Make it THICC in order to get a good laser cutting result..  strokeWeight(50);

 // Don't add joins  strokeJoin(MITER);

 // Now we can finally draw the shape  beginShape();

 // Center point in the drawing  float centerX = drawingWidth/2;  float centerY = drawingWidth/2;

 // Shape of the rose; See Wikipedia  float k = 10.0;  

 float dis = 1.0;  float step = 6.0;

 k = dis/step;

 float maxTheta = 12*PI;

 // How many points do we want? 100 seems to work fine  int iters = 100;  for (int i = 0; i < iters+3; i++) {    int realI = i % iters;    float theta = realI*(maxTheta/(float)iters);    float x = size*cos(k*theta)*cos(theta);    float y = size*cos(k*theta)*sin(theta);

   curveVertex(x+centerX, y+centerY);  }

 // Finish the shape  endShape();