Point.pde

class Point {
  float _r = i_pointRad;
  float _x;
  float _y;
  boolean _isSelected;

  Point(float x0, float y0) {
    _x = x0;
    _y = y0;
    _isSelected = false;
  }

  void draw() {
    pushStyle();
    stroke(c_pointStroke);
    fill((_isSelected) ? c_pointSelect : c_pointDefault);
    ellipse(_x, _y, i_pointRad, i_pointRad);
    popStyle();
  }

  boolean isSelectedPoint(float x, float y) {
    return (x - _x)*(x - _x) + (y - _y) * (y - _y) < _r * _r;
  }

  boolean isSelectedCir(float x, float y, float r) {
    return (x - _x)*(x - _x) + (y - _y)*(y - _y) < r * r;
  }

  boolean isSelectedRect(float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4) {
    int l0 = lineSideTest(x1, y1, x2, y2, _x, _y);
    int l1 = lineSideTest(x2, y2, x3, y3, _x, _y);
    int l2 = lineSideTest(x3, y3, x4, y4, _x, _y);
    int l3 = lineSideTest(x4, y4, x1, y1, _x, _y);
    
    return (l0 == l1) && (l1 == l2) && (l2 == l3);  
  }

  void setSelected() {
    _isSelected = true;
  }

  void setUnSelected() {
    _isSelected = false;
  }

  void toggleSelected() {
    _isSelected = !_isSelected;
  }
}