cartao-verso.js

Math.radians = function(degrees) {
  return degrees * Math.PI / 180;
};


// aspects:
// conjunction (0), **NOT INCLUDED** sextile (60), square (90), trine (120), opposition (180)
function aspects(angles, positions) {
  var m = 7.5; // margin for aspects
  var lines = [];

  for (var who = 0; who < angles.length; who++) {
    // checks each planet with subsequent planets 
    for (var with_whom = who + 1; with_whom < angles.length; with_whom++) {
      
      var delta = Math.abs(angles[who] - angles[with_whom]);
      var line = null;

      // conjunction
      if (-m < delta && delta < m) {
        line = {
          'origin': positions[who],
          'end': positions[with_whom],
          'type': 'conjunction'
        };
      }

      // square
      if ((90-m < delta && delta < 90+m) || (270-m < delta && delta < 270+m)) {
        line = {
          'origin': positions[who],
          'end': positions[with_whom],
          'type': 'square'
        };
      }

      // trine
      if ((120-m < delta && delta < 120+m) || (240-m < delta && delta < 240+m)) {
        line = {
          'origin': positions[who],
          'end': positions[with_whom],
          'type': 'trine'
        };
      }

      // opposition
      if (180-m < delta && delta < 180+m) {
        line = {
          'origin': positions[who],
          'end': positions[with_whom],
          'type': 'opposition'
        };
      }

      if (line) {
        lines.push(line);
      }

    }
  }

  return lines;
}

function planet_position(angle, radius) {
  var x, y;
  var a = radius[0]/2, b = radius[1]/2;

  var theta = Math.radians(angle);

  x = a * Math.cos(theta);
  y = b * Math.sin(theta);

  return new Point(x,y);
}


// 0 = sun
// 1 = moon
// 2 = mercury
// 3 = venus
// 4 = mars
// 5 = jupiter
// 6 = saturn

var c = 0.27;

var radii = [
  [251*c, 122*c],
  [339*c, 165*c],
  [426*c, 207*c],
  [514*c, 250*c],
  [601*c, 292*c],
  [689*c, 335*c],
  [777*c, 378*c],
];

var positions = [];

var delta_x = paper.view.viewSize.width / 2;
var delta_y = paper.view.viewSize.height / 2;

function plot_planets() {

  console.log('(Cartão 1) Will now draw the planets...');



  planets_layer.removeChildren();
  planets_layer.activate();

  positions = [];

  if (planets.length == 0) {
    for (var i = 0; i < 7; i++) {
      planets.push(Math.floor(Math.random() * 360));
    }
  }

  for (var i = 0; i < planets.length; i++) {
  
    var p = planet_position(planets[i], radii[i]);
  
    positions.push(p);
    
    var adjusted_point = new Point(p.x + delta_x, p.y + delta_y)
    var drawn_planet = new Path.Circle(adjusted_point, PLANET_WIDTH*c);
    drawn_planet.fillColor = '#007cff';
  }

  planets_layer.bringToFront();


}

function plot_aspects() {

  console.log('(Cartão 1) ...and their aspects.');

  aspects_layer.removeChildren();
  aspects_layer.activate();

  var mask = new Path.Rectangle(13,13,260,170);

  var lines = aspects(planets, positions);
  // console.log(positions);
  for (var i = 0; i < lines.length; i++) {
    var myPath = new Path();
    myPath.strokeColor = '#007cff';
    myPath.strokeWidth = ASPECT_STROKE*c;
    myPath.add(new Point(lines[i].origin.x + delta_x, lines[i].origin.y + delta_y));
    myPath.add(new Point(lines[i].end.x + delta_x, lines[i].end.y + delta_y));
  }

  aspects_layer.clipped = true;

  aspects_layer.bringToFront();
}




var base_layer = new Layer(),
    type_layer = new Layer(),
    aspects_layer = new Layer(),
    planets_layer = new Layer();


function plot_images_l1() {

  base_layer.removeChildren();
  base_layer.activate();
  base_layer.importSVG('svgs/cartao_verso_base.svg');
  base_layer.scale(2,2);
  
  base_layer.sendToBack();
  
}

function plot_images_l2() {
  type_layer.removeChildren();
  type_layer.activate();
  type_layer.importSVG('svgs/cartao_verso_topo.svg');
  type_layer.scale(2,2);

  type_layer.bringToFront();

}

view.onFrame = function(event) {
  if (svgs_are_dirty) {
    plot_images_l1();

    plot_planets();
    
    plot_images_l2();
    
    plot_aspects();

    planets_layer.bringToFront();
  
    svgs_are_dirty = false;
  }
}