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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div class="container">
  <canvas class="illo"></canvas>
  <p><a href="https://dribbble.com/shots/3611306-Happy-Town">Original design by Alex Pasquarella</a></p>
  <p>Click &amp; drag to rotate</p>
  <p><button class="reset-button">Reset</button></p>
</div>
            
          
!
            
              html { height: 100%; }

body {
  min-height: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  font-family: sans-serif;
  text-align: center;
  cursor: move;
}

canvas {
  display: block;
  margin: 0px auto 20px;
}

a { color: #5AE; }
a:hover { color: #247; }

            
          
!
            
              // Made with Zdog


// colors
var red = '#F44';
var navy = '#247';
var blue = '#5AE';
var gold = '#FB3';
var white = 'white';

// -------------------------- makeBuilding -------------------------- //

function makeBuilding( options ) {

  var wallX = options.width/2;
  var wallY = options.height;
  var wallZ = options.depth/2;

  // collect walls
  var building = {};

  // south/noth walls
  [ true, false ].forEach( function( isSouth ) {
    var wallTZ = isSouth ? -wallZ : wallZ;
    var wallGroup = new Zdog.Group({
      addTo: options.addTo,
      translate: { z: -wallTZ },
    });

    var wallPath = [
      { x: -wallX, y: -wallY }
    ];

    if ( options.gable == 'ns' ) {
      wallPath.push({ x: 0, y: -wallY - wallX });
    }

    wallPath = wallPath.concat([
      { x: wallX, y: -wallY },
      { x: wallX, y: 0 },
      { x: -wallX, y: 0 },
    ]);

    // wall
    new Zdog.Shape({
      path: wallPath,
      addTo: wallGroup,
      color: isSouth ? red : gold,
    });

    var windowColor = isSouth ? navy : red;
    var windowProperty = isSouth ? 'southWindows' : 'northWindows';
    handleWindows( options, windowProperty, wallGroup, windowColor );

    var wallProperty = isSouth ? 'southWall' : 'northWall';
    building[ wallProperty ] = wallGroup;

  });

  // east/west wall
  [ true, false ].forEach( function( isWest ) {
    var wallGroup = new Zdog.Group({
      addTo: options.addTo,
      translate: { x: isWest ? -wallX : wallX },
      rotate: { y: TAU/4 },
    });

    var wallPath = [
      { x: -wallZ, y: -wallY }
    ];

    if ( options.gable == 'ew' ) {
      wallPath.push({ x: 0, y: -wallY - wallZ });
    }

    wallPath = wallPath.concat([
      { x: wallZ, y: -wallY },
      { x: wallZ, y: 0 },
      { x: -wallZ, y: 0 },
    ]);

    // wall
    new Zdog.Shape({
      path: wallPath,
      addTo: wallGroup,
      color: isWest ? blue : white,
    });

    var windowColor = isWest ? navy : blue;
    var windowProperty = isWest ? 'westWindows' : 'eastWindows';
    handleWindows( options, windowProperty, wallGroup, windowColor );

    var wallProperty = isWest ? 'westWall' : 'eastWall';
    building[ wallProperty ] = wallGroup;
  });


  var roofMakers = {
    ns: function() {
      var y0 = -wallY - wallX;
      var roofPanel = new Zdog.Shape({
        path: [
          { x: 0, y: y0, z: wallZ },
          { x: 0, y: y0, z: -wallZ },
          { x: wallX, y: -wallY, z: -wallZ },
          { x: wallX, y: -wallY, z: wallZ },
        ],
        addTo: options.addTo,
        color: gold,
      });
      roofPanel.copy({
        scale: { x: -1 },
        color: navy,
      });
    },

    ew: function() {
      var y0 = -wallY - wallZ;
      var xA = options.isChurch ? -wallX + 8 : -wallX;
      var roofPanel = new Zdog.Shape({
        path: [
          { z: 0, y: y0, x: xA },
          { z: 0, y: y0, x: wallX },
          { z: -wallZ, y: -wallY, x: wallX },
          { z: -wallZ, y: -wallY, x: xA },
        ],
        addTo: options.addTo,
        color: red,
      });
      roofPanel.copy({
        path: [
          { z: 0, y: y0, x: -wallX },
          { z: 0, y: y0, x: wallX },
          { z: -wallZ, y: -wallY, x: wallX },
          { z: -wallZ, y: -wallY, x: -wallX },
        ],
        scale: { z: -1 },
        color: navy,
      });
    },
  };

  var roofMaker = roofMakers[ options.gable ];
  if ( roofMaker ) {
    roofMaker();
  }

  return building;
}

function handleWindows( options, windowProperty, wallGroup, color ) {
  var windowOption = options[ windowProperty ];
  if ( !windowOption ) {
    return;
  }

  var columns = windowOption[0];
  var rows = windowOption[1];
  // var windowPaths = [];
  for ( var row=0; row < rows; row++ ) {
    for ( var col=0; col < columns; col++ ) {
      var x = ( col - (columns-1)/2 ) * 6;
      var y = -options.height + (row + 0.75) * 8;
      var windowPath = [
        { x: x + -1, y: y + -2 },
        { x: x +  1, y: y + -2 },
        { x: x +  1, y: y +  2 },
        { x: x + -1, y: y +  2 },
      ];
      new Zdog.Shape({
        path: windowPath,
        addTo: wallGroup,
        color: color,
      });
    }
  }
}

// -------------------------- lilPyramid -------------------------- //

function lilPyramid( options ) {
  var anchor = new Zdog.Anchor({
    addTo: options.addTo,
    translate: options.translate,
  });

  var panel = new Zdog.Shape({
    path: [
      { x: 0, y: -3, z: 0 },
      { x: 3, y:  0, z: 0 },
      { x: 0, y:  0, z: 3 },
    ],
    addTo: anchor,
    color: red,
  });

  panel.copy({
    rotate: { y: TAU/4 },
    color: red,
  });
  panel.copy({
    rotate: { y: TAU/2 },
    color: navy,
  });
  panel.copy({
    rotate: { y: TAU * 3/4 },
    color: navy,
  });

}

function hedge( options ) {
  var anchor = new Zdog.Anchor({
    addTo: options.addTo,
    translate: options.translate,
  });

  var ball = new Zdog.Shape({
    path: [ { y: 0 }, { y: -1 } ],
    addTo: anchor,
    translate: { y: -2.5 },
    stroke: 5,
    color: options.color || navy,
  });

  ball.copy({
    stroke: 4,
    translate: { y: -5 },
  });

  ball.copy({
    stroke: 2.5,
    translate: { y: -7.5 },
  });
}


// -------------------------- demo -------------------------- //

var illoElem = document.querySelector('.illo');
var w = 160;
var h = 160;
var minWindowSize = Math.min( window.innerWidth, window.innerHeight );
var zoom = Math.min( 6, Math.floor( minWindowSize / w ) );
illoElem.setAttribute( 'width', w * zoom );
illoElem.setAttribute( 'height', h * zoom );

var isSpinning = true;
var TAU = Zdog.TAU;

var illo = new Zdog.Illustration({
  element: illoElem,
  zoom: zoom,
  rotate: { y: TAU/8 },
  dragRotate: true,
  onDragStart: function() {
    isSpinning = false;
  },
});

// default to flat, filled shapes
[ Zdog.Shape, Zdog.Rect, Zdog.Ellipse ].forEach( function( ItemClass ) {
  ItemClass.defaults.fill = true;
  ItemClass.defaults.stroke = false;
});

// -- illustration shapes --- //

var quarterView = 1/Math.sin(TAU/8);

// anchor
var town = new Zdog.Group({
  addTo: illo,
  translate: { y: 36 },
  scale: { x: quarterView, z: quarterView },
  updateSort: true,
});

// ----- front building ----- //

var frontAnchor = new Zdog.Anchor({
  addTo: town,
  translate: { x: 16, y: -4, z: 20 },
});

var frontBuilding = makeBuilding({
  width: 22,
  depth: 16,
  height: 20,
  addTo: frontAnchor,
  gable: 'ew',
  southWindows: [ 3, 1 ],
  eastWindows: [ 2, 2 ],
  westWindows: [ 2, 2 ],
  northWindows: [ 3, 2 ],
});

// east gable dot
var gableDot = new Zdog.Ellipse({
  diameter: 2,
  addTo: frontBuilding.eastWall,
  color: blue,
  translate: { y: -20 },
});
// west gable dot
gableDot.copy({
  addTo: frontBuilding.westWall,
  color: navy,
});

// south doors
var door = new Zdog.Shape({
  path: [
    { x: -2.5, y: 0 },
    { x: -2.5, y: -5.5 },
    { arc: [
      { x: -2.5, y: -8 },
      { x:    0, y: -8 },
    ]},
    { arc: [
      { x:  2.5, y: -8 },
      { x:  2.5, y: -5.5 },
    ]},
    { x: 2.5, y: 0 },
  ],
  addTo: frontBuilding.southWall,
  translate: { x: -4.5 },
  color: navy,
});
door.copy({
  translate: { x: 4.5 },
});

[ -1, 1 ].forEach( function( zSide ) {
  var frontGableGroup = new Zdog.Group({
    addTo: frontAnchor,
    translate: { y: -20, z: -8*zSide },
  });

  // front building gable
  new Zdog.Shape({
    path: [
      { x:  0, y: -6 },
      { x: -6, y: 0 },
      { x:  6, y: 0 },
    ],
    addTo: frontGableGroup,
    translate: { y: 1 },
    color: zSide == -1 ? red : gold,
  });

  gableDot.copy({
    addTo: frontGableGroup,
    translate: { y: -2 },
    color: zSide == -1 ? navy : red,
  });

  var frontGableSide = new Zdog.Shape({
    path: [
      { x: 0, y: 0, z: 0 },
      { x: 5, y: 5, z: 0 },
      { x: 0, y: 0, z: 5*zSide },
    ],
    addTo: frontAnchor,
    translate: { y: -25, z: -8*zSide },
    color: gold,
  });
  frontGableSide.copy({
    scale: { x: -1 },
    color: navy,
  });

});


// ----- left building ----- //

var leftAnchor = new Zdog.Anchor({
  addTo: town,
  translate: { x: -13, y: -10, z: 23 },
});

var leftBuilding = makeBuilding({
  width: 16,
  depth: 22,
  height: 20,
  addTo: leftAnchor,
  gable: 'ns',
  southWindows: [ 2, 2 ],
  eastWindows: [ 3, 2 ],
  westWindows: [ 3, 1 ],
  northWindows: [ 2, 2 ],
});

door.copy({
  addTo: leftBuilding.westWall,
  translate: { x: -4.5 },
});
door.copy({
  addTo: leftBuilding.westWall,
  translate: { x: 4.5 },
});

// ----- cupola ----- //

var cupolaNSPanel = new Zdog.Shape({
  path: [
    { x: -1, y: 0 },
    { x: 3, y: 0 },
    { x: 3, y: 9 },
    { x: -1, y: 5 },
      // HACK add point to sort in front of roof
      { move: { x: 8, z: 4 } },
  ],
  addTo: leftAnchor,
  translate: { y: -34, z: 3 },
  color: red,
});
cupolaNSPanel.copy({
  scale: { x: -1 },
});
cupolaNSPanel.copy({
  scale: { z: -1 },
  translate: { y: -34, z: -3 },
  color: gold,
});
cupolaNSPanel.copy({
  translate: { y: -34, z: -3 },
  scale: { x: -1, z: -1 },
  color: gold,
});

[ -1, 1 ].forEach( function( xSide ) {
  var group = new Zdog.Group({
    addTo: leftAnchor,
    translate: { y: -34, x: 3*xSide },
  });
  // ew panel
  new Zdog.Shape({
    path: [
      { z:  3, y:  0 },
      { z:  0, y: -3 },
      { z: -3, y:  0 },
      { z: -3, y:  9 },
      { z:  3, y:  9 },
      // HACK add point to sort in front of roof
      { move: { x: 16*xSide } },
    ],
    addTo: group,
    color: xSide == -1 ? blue : white,
  });
  gableDot.copy({
    addTo: group,
    translate: { y: 3 },
    rotate: { y: TAU/4 },
    color: xSide == -1 ? navy : blue,
  });
});

// cupola roof panel
var cupolaRoofPanel = new Zdog.Shape({
  path: [
    { x: -3, y: -3, z:  0 },
    { x:  3, y: -3, z:  0 },
    { x:  3, y:  0, z:  3 },
    { x: -3, y:  0, z:  3 },
  ],
  addTo: leftAnchor,
  translate: { y: -34 },
  color: navy,
});
cupolaRoofPanel.copy({
  scale: { z: -1 },
  color: red,
});


// ----- left building slopes ----- //

// east slope
var leftEWSlope = new Zdog.Shape({
  path: [
    { x: 0, y: 0, z:  11 },
    { x: 0, y: 0, z: -11 },
    { x: 6, y: 6, z: -11 },
    { x: 6, y: 6, z:  11 },
  ],
  addTo: leftAnchor,
  translate: { x: 8 },
  color: gold,
});
// west slope
leftEWSlope.copy({
  scale: { x: -1 },
  translate: { x: -8 },
  color: gold,
});

// south slope
new Zdog.Shape({
  path: [
    { z:  0, y: 0, x: -8 },
    { z:  0, y: 0, x:  8 },
    { z:  6, y: 6, x:  8 },
    { z:  6, y: 6, x: -8 },
  ],
  addTo: leftAnchor,
  translate: { z: 11 },
  color: navy,
});

// south east corner
var leftCorner = new Zdog.Shape({
  path: [
    { x: 0, y: 0, z:  0 },
    { x: 6, y: 6, z:  0 },
    { x: 0, y: 6, z:  6 },
  ],
  addTo: leftAnchor,
  translate: { x: 8, z: 11 },
  color: red,
});
// south west corner
leftCorner.copy({
  scale: { x: -1 },
  translate: { x: -8, z: 11 },
  color: blue,
});



// ----- back tower ----- //

var towerAnchor = new Zdog.Anchor({
  addTo: town,
  translate: { x: -13, y: -24, z: -4 },
});

var tower = makeBuilding({
  width: 16,
  depth: 16,
  height: 28,
  addTo: towerAnchor,
  gable: 'ns',
  southWindows: [ 2, 3 ],
  eastWindows: [ 2, 2 ],
  westWindows: [ 2, 3 ],
  northWindows: [ 2, 3 ],
});

door.copy({
  addTo: tower.eastWall,
  translate: { x: 0 },
  color: blue,
});

gableDot.copy({
  addTo: tower.southWall,
  translate: { y: -29 },
  color: navy,
});

gableDot.copy({
  addTo: tower.northWall,
  translate: { y: -29 },
  color: red,
});

var towerChimney = new Zdog.Shape({
  addTo: towerAnchor,
  path: [ { y: 0 }, { y: 4 } ],
  translate: { x: -2, y: -37, z: 1 },
  stroke: 2,
  color: navy,
});
towerChimney.copy({
  translate: { x: -2, y: -37, z: -3 },
});

// plume
new Zdog.Shape({
  path: [
    { x: -3, y: 1 },
    { arc: [
      { x: -3, y: -1 },
      { x: -1, y: -1 },
    ]},
    { x:  3, y: -1 },
    { arc: [
      { x:  3, y:  1 },
      { x:  1, y:  1 },
    ]},
  ],
  addTo: towerAnchor,
  translate: { x: -2, y: -42, z: -6 },
  rotate: { y: -TAU/4 },
  stroke: 2,
  color: blue
});

// ----- tower slopes ----- //

// big east slope
var towerEWSlope = new Zdog.Shape({
  path: [
    { x: 0, y: 0, z:  1 },
    { x: 0, y: 0, z: -1 },
    { x: 1, y: 1, z: -1 },
    { x: 1, y: 1, z:  1 },
  ],
  addTo: towerAnchor,
  translate: { x: 8 },
  // size by scaling
  scale: { x: 20, y: 20, z: 8 },
  color: gold,
});

// south slope down to left building
var towerNSSLope = new Zdog.Shape({
  path: [
    { z: 0, y: 0, x:  1 },
    { z: 0, y: 0, x: -1 },
    { z: 1, y: 1, x: -1 },
    { z: 1, y: 1, x:  1 },
  ],
  addTo: towerAnchor,
  translate: { z: 8 },
  scale: { x: 8, y: 14, z: 8 },
  color: navy,
});

// south east corner
new Zdog.Shape({
  path: [
    { x: 0, y: 0, z: 0 },
    { x: 20, y: 20, z: 0 },
    { x: 6, y: 20, z: 8 },
    { x: 0, y: 14, z: 8 },
  ],
  addTo: towerAnchor,
  translate: { x: 8, z: 8 },
  color: red,
});

// north slope
towerNSSLope.copy({
  translate: { z: -8 },
  scale: { x: 8, y: 20, z: -7 },
  color: gold,
});

// north east corner
new Zdog.Shape({
  path: [
    { x: 0, y: 0, z: 0 },
    { x: 20, y: 20, z: 0 },
    { x: 0, y: 20, z: -7 },
  ],
  addTo: towerAnchor,
  translate: { x: 8, z: -8 },
  color: gold,
});

// west slope
towerEWSlope.copy({
  scale: { x: -12, y: 20, z: 8 },
  translate: { x: -8 },
  color: gold,
});

// north west corner
new Zdog.Shape({
  path: [
    { x: 0, y: 0, z: 0 },
    { x: -12, y: 20, z: 0 },
    { x: 0, y: 20, z: -7 },
  ],
  addTo: towerAnchor,
  translate: { x: -8, z: -8 },
  color: red,
});

// south west corner back to left building
new Zdog.Shape({
  path: [
    { x: 0, y: 0, z: 0 },
    { x: -12, y: 20, z: 0 },
    { x: -6, y: 20, z: 8 },
    { x: 0, y: 14, z: 8 },
  ],
  addTo: towerAnchor,
  translate: { x: -8, z: 8 },
  color: blue,
});

// ----- church ----- //

var churchAnchor = new Zdog.Anchor({
  addTo: town,
  translate: { x: -5, y: -4, z: -27 },
});

var church = makeBuilding({
  isChurch: true, // special flag for roof
  width: 22,
  depth: 16,
  height: 28,
  addTo: churchAnchor,
  gable: 'ew',
  southWindows: [ 3, 2 ],
  eastWindows: [ 2, 2 ],
  northWindows: [ 3, 2 ],
});

door.copy({
  addTo: church.westWall,
  translate: { x: -3.5 },
});
door.copy({
  addTo: church.westWall,
  translate: { x: 3.5 },
});

// big circle window
new Zdog.Ellipse({
  diameter: 8,
  addTo: church.westWall,
  translate: { y: -22 },
  color: navy,
});

// ----- bell tower ----- //

( function() {

  var bellTowerAnchor = new Zdog.Anchor({
    addTo: churchAnchor,
    translate: { x: -7, y: -36, z: -4 },
  });

  // tower ledge
  new Zdog.Rect({
    width: 8,
    height: 8,
    addTo: bellTowerAnchor,
    translate: { y: -12 },
    rotate: { x: TAU/4 },
    color: navy,
  });

  var wallColors = [ red, white, gold, blue ];
  var accentColors = [ navy, blue, red, navy ];
  var roofColors = [ navy, gold, red, navy ];

  for ( var i=0; i < 4; i++ ) {
    var wallAnchor = new Zdog.Anchor({
      addTo: bellTowerAnchor,
      rotate: { y: TAU/4 * -i },
    });
    var bottomWallGroup = new Zdog.Group({
      addTo: wallAnchor,
      translate: { z: 4 }
    });

    var wallColor = wallColors[i];
    var accentColor = accentColors[i];
    var roofColor = roofColors[i];

    // bottom wall
    new Zdog.Rect({
      width: 8,
      height: 12,
      addTo: bottomWallGroup,
      translate: { y: -6 },
      color: wallColor,
    });
    // circle cut-out
    new Zdog.Ellipse({
      diameter: 4,
      addTo: bottomWallGroup,
      translate: { y: -4 },
      color: accentColor,
    });
    // top stripe
    new Zdog.Rect({
      width: 8,
      height: 2,
      addTo: bottomWallGroup,
      translate: { y: -9 },
      color: accentColor,
    });

    var topWallGroup = new Zdog.Group({
      addTo: wallAnchor,
      translate: { y: -12, z: 3 },
    });
    // top wall
    new Zdog.Rect({
      width: 6,
      height: 7,
      addTo: topWallGroup,
      translate: { y: -3.5 },
      color: wallColor,
    });
    // top window
    new Zdog.Rect({
      width: 2,
      height: 5,
      addTo: topWallGroup,
      translate: { y: -2.5 },
      color: accentColor,
    });

    // roof
    new Zdog.Shape({
      path: [
        { x:  0, y: 0, z:  0 },
        { x: -3, y: 6, z: 3 },
        { x:  3, y: 6, z: 3 },
      ],
      addTo: wallAnchor,
      translate: { y: -25 },
      color: roofColor,
    });
  }

  // roof connectors
  // south, white side
  new Zdog.Shape({
    path: [
      { z:  4, y:  0 },
      { z: -4, y: -1 },
      { z: -4, y:  8 },
    ],
    addTo: bellTowerAnchor,
    translate: { x: 4 },
    color: white,
  });
  // east gold side
  var connector = new Zdog.Rect({
    width: 8,
    height: 10,
    addTo: bellTowerAnchor,
    translate: { z: -4, y: 4 },
    color: gold,
  });
  // north blue side
  connector.copy({
    translate: { x: -4, y: 4 },
    rotate: { y: TAU/4 },
    color: blue,
  });

})();

// ----- hill ----- //

new Zdog.Shape({
  path: [
    { x:  0, y: 2 },
    { x:  10, y: 2 },
    { bezier: [
      { x: 14, y: 2 },
      { x: 20, y: 10 },
      { x: 24, y: 10 },
    ]},
    { x: 30, y: 10 },
    { arc: [
      { x: 34, y: 10 },
      { x: 34, y: 14 },
    ]},
    // bring it back into hill
    { x: 14, y: 14, z: 0 },
  ],
  addTo: town,
  translate: { x: -6, y: -20, z: -12 },
  stroke: 4,
  color: gold,
});

// ----- lil pyramids ----- //

// front in front of left building
lilPyramid({
  addTo: town,
  translate: { x: 6, z: 35, y: -4 },
});

// behind left building

lilPyramid({
  addTo: town,
  translate: { x: -34, z: 20, y: -4 },
});


// front right
lilPyramid({
  addTo: town,
  translate: { x: 35, z: 8, y: -4 },
});

lilPyramid({
  addTo: town,
  translate: { x: 31, z: -2, y: -4 },
});
// in front of church
lilPyramid({
  addTo: town,
  translate: { x: 22, z: -28, y: -4 },
});

// ----- hedges ----- //

// to right of front building
hedge({
  addTo: town,
  translate: { x: 24, y: -4, z: 4 },
});

// right of church
hedge({
  addTo: town,
  translate: { x: -4, y: -4, z: -42 },
});
// in between tower & church
hedge({
  addTo: town,
  translate: { x: -30, y: -4, z: -18 },
  // color: gold,
});

hedge({
  addTo: town,
  translate: { x: 9, y: -4, z: -17 },
  // color: gold,
});


// ----- sun ----- //

new Zdog.Shape({
  addTo: town,
  translate: { x: -6, y: -52, z: -42 },
  stroke: 6,
  color: gold,
});

// ----- sky particles ----- //

// dot above left building
var skyDot = new Zdog.Shape({
  translate: { x: -3, y: -48, z: 42 },
  addTo: town,
  stroke: 2,
  color: white,
});

// in front of church
skyDot.copy({
  translate: { x: 30, y: -28, z: -28 },
});

var skyDiamond = new Zdog.Shape({
  path: [
    { x:  0, y: -1 },
    { x:  1, y:  0 },
    { x:  0, y:  1 },
    { x: -1, y:  0 },
  ],
  addTo: town,
  translate: { x: -27, y: -45, z: 29 },
  scale: 0.75,
  stroke: 0.5,
  color: white,
});
skyDiamond.copy({
  rotate: { y: TAU/4 },
});

var skyDiamond2 = skyDiamond.copy({
  translate: { x: 8, y: -34, z: -42 },
});
skyDiamond2.copy({
  rotate: { y: TAU/4, },
});

var skyStar = new Zdog.Shape({
  path: [
    { x: 0, y: -1 },
    { arc: [
      { x: 0, y: 0 },
      { x: 1, y: 0 },
    ]},
    { arc: [
      { x: 0, y: 0 },
      { x: 0, y: 1 },
    ]},
    { arc: [
      { x: 0, y: 0 },
      { x: -1, y: 0 },
    ]},
    { arc: [
      { x: 0, y: 0 },
      { x: 0, y: -1 },
    ]},
  ],
  addTo: town,
  translate: { x: -39, y: -51, z: 12 },
  scale: 1.5,
  stroke: 1,
  color: white,
});
skyStar.copy({
  rotate: { y: TAU/4 },
});

// up front
var skyStar2 = skyStar.copy({
  translate: { x: 29, y: -42, z: 30 },
  color: white,
});
skyStar2.copy({
  rotate: { y: TAU/4 },
});

// ----- clouds ----- //

var cloud = new Zdog.Ellipse({
  addTo: town,
  diameter: 3,
  quarters: 2,
  translate: { x: -30, y: -56, z: 10 },
  rotate: { y: TAU/4, z: -TAU/4 },
  stroke: 2,
  closed: true,
  color: white,
});
cloud.copy({
  translate: { x: -30, y: -57, z: 6 },
});
cloud.copy({
  translate: { x: -30, y: -56, z: 2 },
});

// line underneath
new Zdog.Shape({
  addTo: town,
  path: [ { x: -1 }, { x: 1 } ],
  translate: { x: -30, y: -56, z: 6 },
  scale: { x: 2 },
  rotate: { y: TAU/4 },
  stroke: 2,
  color: white,
});

// ----- flat earth ----- //

var flatEarth = new Zdog.Ellipse({
  diameter: 128,
  addTo: illo,
  translate: town.translate,
  rotate: { x: TAU/4 },
  stroke: 8,
  color: navy,
});

// ----- sky ----- //

var sky = new Zdog.Group({
  addTo: illo,
  translate: town.translate,
  // translate: { y: 2 },
});

( function() {
  var topYs = [
    -64, -64, -52, -52,
    -44, -44, -36, -36,
    -44, -44, -52, -52,
    -60, -60, -52, -52,
  ];
  var bottomYs = [
    -24, -24, -16, -16,
    -8, -8, -0, -0,
    -8, -8, -16, -16,
    -24, -24, -32, -32,
  ];
  var radius = 64;
  var skyPanelCount = topYs.length;
  var angle = TAU / skyPanelCount;
  var panelWidth = Math.tan( angle/2 ) * radius * 2;
  for ( var i=0; i < skyPanelCount; i++ ) {
    var nextI = (i + 1) % skyPanelCount;
    var topYA = topYs[ i ];
    var topYB = topYs[ nextI ];
    var bottomYA = bottomYs[ i ];
    var bottomYB = bottomYs[ nextI ];
    var panelAnchor = new Zdog.Anchor({
      addTo: sky,
      rotate: { y: angle * i  - TAU/4 },
      translate: { y: 1 },
    });
    new Zdog.Shape({
      path: [
        { x: -panelWidth/2, y: topYA },
        { bezier: [
          { x: 0, y: topYA },
          { x: 0, y: topYB },
          { x:  panelWidth/2, y: topYB },
        ]},
        { x:  panelWidth/2, y: bottomYB },
        { bezier: [
          { x: 0, y: bottomYB },
          { x: 0, y: bottomYA },
          { x: -panelWidth/2, y: bottomYA },
        ]},
      ],
      addTo: panelAnchor,
      translate: { z: -radius },
      color: blue,
      stroke: 1,
      backface: false,
    });
  }
})();

// -- animate --- //

var t = 0;
var tSpeed = 1/120;
var then = new Date() - 1/60;

function animate() {
  update();
  render();
  requestAnimationFrame( animate );
}

animate();

// -- update -- //

function update() {
  var now = new Date();
  var delta = now - then;

  if ( isSpinning ) {
    t += tSpeed * delta/60;
    var theta = Zdog.easeInOut( t % 1 ) * TAU;
    var rev = 1;
    var spin = -theta * rev + TAU/8;
    var extraRotation = TAU * rev * Math.floor( ( t % 4 ) );
    illo.rotate.y = spin - extraRotation;
    var everyOtherCycle = t % 2 < 1;
    illo.rotate.x = everyOtherCycle ? 0 : ( Math.cos( theta ) * -0.5 + 0.5 ) * TAU * -1/8;
  }
  illo.normalizeRotate();

  // rotate
  illo.updateGraph();

  then = now;
}

// -- render -- //

function render() {
  var ctx = illo.ctx;
  illo.prerenderCanvas();

  // render shapes
  var isCameraXUp = illo.rotate.x < 0 || illo.rotate.x > TAU/2;

  sky.renderGraphCanvas( ctx );

  // HACK sort flat earth & town shapes manually
  if ( isCameraXUp ) {
    flatEarth.renderGraphCanvas( ctx );
  }
  town.renderGraphCanvas( ctx );
  if ( !isCameraXUp ) {
    flatEarth.renderGraphCanvas( ctx );
  }

  illo.postrenderCanvas();
  ctx.restore();
}

// ----- inputs ----- //

document.querySelector('.reset-button').onclick = function() {
  isSpinning = false;
  illo.rotate.set({ x: 0, y: TAU/8 });
};

            
          
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