class Bounder {
  int state;
  float h;
  float angle, arcangle;

  float angle(PVector v1, PVector v2) {
    float a = atan2(v2.y, v2.x) - atan2(v1.y, v1.x);
    if (a < 0) a += TWO_PI;
    return a;
  }
  PVector p1, p2, p3, p4;
  void leftclick() {
    if (state < 3) state++;
    else state = 1;
    if (state == 1) {
      p1 = new PVector(mouseX, mouseY);
      loop();
    }
    if (state == 2) {
      p2 = new PVector(mouseX, mouseY);
    }
    if (state == 3) {
      h = -p2.dist(new PVector(mouseX, mouseY));
    }
  }
  
  void rightclick(){
    reset();
  }
  void reset(){
    boolean redrawthis = (state == 3) ? true : false;
    state = 0;
    if(redrawthis) redraw();
  }
  void update() {
    if (state == 2) {
      h = -p2.dist(new PVector(mouseX, mouseY));
    }
  }
  void display() {
    if (state > 0) {
      fill(0);
      noStroke();
      circle(p1.x, p1.y, 5);
    }
    if (state == 1) {
      stroke(1);
      line(p1.x, p1.y, mouseX, mouseY);
    }
    if (state > 1) {
      fill(0);
      noStroke();
      circle(p2.x, p2.y, 5);
      fill(255, 100);
      stroke(1);
      pushMatrix();
      translate(p1.x, p1.y);
      rotate(angle(new PVector(0, width), PVector.sub(p2, p1)));
      rect(0, 0, h, p1.dist(p2));
      p3 = new PVector(screenX(h, 0), screenY(h, 0));
      p4 = new PVector(screenX(h, p1.dist(p2)), screenY(h, p1.dist(p2)));
      popMatrix();
      fill(0);
      noStroke();
      circle(p3.x, p3.y, 5);
      circle(p4.x, p4.y, 5);
    }
  }

  void compile(boolean Execute) {

    if (Execute) {
      state = 0;
      covers.add(new Cover(p1, p2, p4, p3));
    }

    PVector ptopmid = new PVector((p1.x + p2.x)/2, (p1.y + p2.y)/2);
    PVector pbotmid = new PVector((p3.x + p4.x)/2, (p3.y + p4.y)/2);

    /*
    links: p1 -> ptopmid -> pbotmid -> p3
     rechts: ptopmid -> p2 -> p4 -> pbotmid
     */
    int leftLeftTopX = (int)map(p1.x, 0, width, 0, images[imageNo].width);
    int leftLeftTopY = (int)map(p1.y, 0, height, 0, images[imageNo].height);
    int leftRightTopX = (int)map(ptopmid.x, 0, width, 0, images[imageNo].width);
    int leftRightTopY = (int)map(ptopmid.y, 0, height, 0, images[imageNo].height);
    int leftRightBotX = (int)map(pbotmid.x, 0, width, 0, images[imageNo].width);
    int leftRightBotY = (int)map(pbotmid.y, 0, height, 0, images[imageNo].height);
    int leftLeftBotX = (int)map(p3.x, 0, width, 0, images[imageNo].width);
    int leftLeftBotY = (int)map(p3.y, 0, height, 0, images[imageNo].height);

    int rightLeftTopX = leftRightTopX;
    int rightLeftTopY = leftRightTopY;
    int rightRightTopX = (int)map(p2.x, 0, width, 0, images[imageNo].width);
    int rightRightTopY = (int)map(p2.y, 0, height, 0, images[imageNo].height);
    int rightRightBotX = (int)map(p4.x, 0, width, 0, images[imageNo].width);
    int rightRightBotY = (int)map(p4.y, 0, height, 0, images[imageNo].height);
    int rightLeftBotX = leftRightBotX;
    int rightLeftBotY = leftRightBotY;


    //beispielcommands:
    //for f in ./*.jpg; do convert "$f" \( -clone 0 -fill black -colorize 100 -fill white -draw "polygon 3218,2414 4882,2414 4882,2621 3218,4771" \) -alpha off -compose copy_opacity -composite -trim +repage "$f"_left.jpg; done
    //for f in ./*.jpg; do convert "$f" \( -clone 0 -fill black -colorize 100 -fill white -draw "polygon 3218,2414 4882,2414 4882,2621 3218,4771" \) -alpha off -compose copy_opacity -composite -trim +repage "$f"_right.jpg; done

    String folderName =  String.valueOf((int)random(100000000));
    String cmdleft = "for f in ./*.jpg; do convert \"$f\" \\( -clone 0 -fill black -colorize 100 -fill white -draw \"polygon " + leftLeftTopX + "," + leftLeftTopY + " " + leftRightTopX + "," + leftRightTopY + " " + leftRightBotX + "," + leftRightBotY + " " + leftLeftBotX + "," + leftLeftBotY + "\" \\) -alpha off -compose copy_opacity -composite -trim +repage " + folderName + "/\"$f\"_left.jpg; done";
    String cmdright = "for f in ./*.jpg; do convert \"$f\" \\( -clone 0 -fill black -colorize 100 -fill white -draw \"polygon " + rightLeftTopX + "," + rightLeftTopY + " " + rightRightTopX + "," + rightRightTopY + " " + rightRightBotX + "," + rightRightBotY + " " + rightLeftBotX + "," + rightLeftBotY + "\" \\) -alpha off -compose copy_opacity -composite -trim +repage " + folderName + "/\"$f\"_right.jpg; done";
    String cmdpdf = "convert " + folderName + "/*.jpg notizheft.pdf";
    println(cmdleft);
    println(cmdright);
    //execl("/bin/sh", "-c", "cd", (const char *)0);
    //exec("/bin/sh -c cd " + folderURI + " && " + cmdleft);

    //String[] runConvert = { "/bin/bash", "-c", "cd " + folderURI + " && mkdir " + folderName + " && " + cmdleft + " && " + cmdright + " && " + cmdpdf };
    String[] runConvert = { "/bin/bash", "-c", "cd " + folderURI + " && mkdir " + folderName + " && " + cmdleft + " && " + cmdright };


    if (Execute) exec(runConvert);






    //println(leftLeftTopX + "," + leftLeftTopY + " " + leftRightTopX + "," + leftRightTopY + " " + leftRightBotX + "," + leftRightBotY + " " + leftLeftBotX + "," + leftLeftBotY);
    //println(rightLeftTopX + "," + rightLeftTopY + " " + rightRightTopX + "," + rightRightTopY + " " + rightRightBotX + "," + rightRightBotY + " " + rightLeftBotX + "," + rightLeftBotY);

    /*
    println((int)map(p1.x, 0, width, 0, images[imageNo].width));
     println((int)map(p1.y, 0, height, 0, images[imageNo].height));
     println((int)map(p2.x, 0, width, 0, images[imageNo].width));
     println((int)map(p2.y, 0, height, 0, images[imageNo].height));
     println((int)map(p3.x, 0, width, 0, images[imageNo].width));
     println((int)map(p3.y, 0, height, 0, images[imageNo].height));
     println((int)map(p4.x, 0, width, 0, images[imageNo].width));
     println((int)map(p4.y, 0, height, 0, images[imageNo].height));*/
  }
}