Gestures - patterns in lines - WIP

gestures.pde

import java.util.ArrayList;

ArrayList<Line> lines = new ArrayList();
float downX, downY;
String title = "";

void setup() {
  size(400, 400);
  loadLines("vmove.txt");
}

void mousePressed() {
  downX = mouseX;
  downY = mouseY;
}

void mouseReleased() {
  lines.add(new Line(downX, downY, mouseX, mouseY));
}

void draw() {
  background(0);
  stroke(255);
  fill(255);

  if (mousePressed) {
    line(downX, downY, mouseX, mouseY);
  }
  PVector c = calculateCentroid(lines);
  for (Line line : lines) {
    line.draw();
  }
  for (Line l : lines) {
    circle(l.x1, l.y1, 5);
  }
  fill(255, 0, 0);
  ellipse(c.x, c.y, 10, 10);
  
  
  PVector centroid = calculateCentroid(lines);
  PVector avgDir = calculateAverageDirection(lines, centroid);
  Line avgLine = new Line(centroid, centroid.copy().add(avgDir));
  float sumDist = calculateCombinedDistance(lines);
  
  println(avgLine.getLength(), sumDist/lines.size());
  stroke(0,255,0);
  avgLine.draw();
  
  fill(255);
  textSize(20);
  text(title.replace(".txt",""), 20,30);
}

void keyPressed() {
  if (key=='c') lines.clear();
  if (key=='s') {
    PrintWriter out = createWriter("hmove.txt");
    for (Line l : lines) {
      out.println(l.x1 + " " + l.y1 + " " + l.x2 + " " + l.y2);
    }
    out.close();
  }
  if (key=='1') loadLines("vmove.txt");
  if (key=='2') loadLines("rotate.txt");
  if (key=='3') loadLines("hmove.txt");
  if (key=='4') loadLines("zoom-in.txt");
  if (key=='5') loadLines("zoom-out.txt");
}

PVector calculateCentroid(ArrayList<Line> lines) {
  float totalX = 0;
  float totalY = 0;
  for (Line line : lines) {
    totalX += (line.x1 + line.x2) / 2;
    totalY += (line.y1 + line.y2) / 2;
  }
  return new PVector(totalX / lines.size(), totalY / lines.size());
}

PVector calculateAverageDirection(ArrayList<Line> lines, PVector centroid) {
  PVector sum = new PVector();
  for (Line line : lines) {
    PVector direction = PVector.sub(new PVector(line.x2, line.y2), new PVector(line.x1, line.y1));
    sum.add(direction);
  }
  sum.div(lines.size());
  return sum;
}

float calculateCombinedDistance(ArrayList<Line> lines) {
  float d = 0;
  for (Line line : lines) {
    d += line.getLength();
  }
  return d;
}

class Line {
  float x1, y1, x2, y2;

  Line(float x1, float y1, float x2, float y2) {
    set(x1,y1,x2,y2);
  }
   
  Line(PVector a, PVector b) {
    set(a.x,a.y,b.x,b.y);
  }
  
  void set(float x1, float y1, float x2, float y2) {
    this.x1 = x1;
    this.y1 = y1;
    this.x2 = x2;
    this.y2 = y2;
  }
  
  void draw() {
    line(x1, y1, x2, y2);
  }
  
  float getLength() {
    return dist(x1,y1,x2,y2); 
  }
}

void loadLines(String filename) {
  title = filename;
  lines.clear();
  String row[] = loadStrings(filename);
  for (String s : row) {
    float p[] = float(split(s, ' '));
    lines.add(new Line(p[0], p[1], p[2], p[3]));
  }
}

hmove.txt

191.0 102.0 244.0 102.0
221.0 141.0 263.0 143.0
239.0 163.0 259.0 173.0
237.0 227.0 262.0 238.0
252.0 195.0 266.0 209.0
263.0 183.0 284.0 188.0
267.0 136.0 290.0 142.0
257.0 107.0 280.0 113.0
237.0 81.0 257.0 82.0
226.0 69.0 248.0 65.0
110.0 172.0 137.0 167.0
137.0 211.0 188.0 212.0
179.0 245.0 208.0 248.0

rotate.txt

88.0 158.0 98.0 140.0
157.0 124.0 178.0 120.0
232.0 133.0 232.0 133.0
244.0 142.0 268.0 165.0
240.0 183.0 240.0 183.0
250.0 196.0 272.0 218.0
266.0 250.0 266.0 250.0
266.0 250.0 264.0 282.0
236.0 280.0 201.0 308.0
177.0 284.0 153.0 304.0
135.0 276.0 132.0 276.0
132.0 276.0 115.0 259.0
130.0 228.0 117.0 221.0
87.0 206.0 78.0 182.0
109.0 157.0 141.0 114.0
179.0 114.0 179.0 114.0
179.0 114.0 200.0 106.0
203.0 132.0 210.0 132.0
223.0 116.0 236.0 115.0
254.0 229.0 254.0 257.0

vmove

119.0 211.0 125.0 200.0
257.0 207.0 236.0 174.0
153.0 258.0 153.0 225.0
234.0 271.0 225.0 239.0
185.0 163.0 185.0 134.0
269.0 114.0 269.0 99.0
302.0 178.0 302.0 165.0
291.0 256.0 291.0 238.0
150.0 133.0 155.0 112.0
208.0 86.0 208.0 68.0
233.0 112.0 233.0 97.0
113.0 178.0 109.0 152.0
194.0 224.0 173.0 199.0
279.0 178.0 306.0 147.0
266.0 161.0 253.0 133.0
201.0 311.0 201.0 282.0

zoom-in

202.0 171.0 215.0 160.0
231.0 188.0 251.0 178.0
253.0 211.0 284.0 211.0
271.0 250.0 282.0 253.0
250.0 282.0 250.0 305.0
183.0 272.0 158.0 297.0
158.0 225.0 139.0 225.0
184.0 209.0 131.0 189.0
197.0 235.0 206.0 217.0
208.0 194.0 206.0 192.0
201.0 204.0 190.0 197.0
193.0 253.0 179.0 249.0
161.0 249.0 157.0 249.0
257.0 233.0 278.0 230.0

zoom-out.txt

251.0 124.0 243.0 129.0
189.0 112.0 201.0 140.0
172.0 144.0 172.0 144.0
171.0 169.0 185.0 178.0
186.0 179.0 206.0 190.0
178.0 211.0 195.0 214.0
206.0 250.0 208.0 227.0
254.0 217.0 237.0 203.0
295.0 182.0 244.0 182.0
307.0 151.0 278.0 152.0
277.0 139.0 273.0 142.0
273.0 135.0 273.0 127.0
250.0 118.0 234.0 110.0
230.0 112.0 218.0 132.0
266.0 169.0 238.0 167.0
229.0 217.0 227.0 209.0