global.THREE = require('three');
const createLoop = require('raf-loop');
const createApp = require('./app');

var Line = require('../')(THREE);
var BasicShader = require('../shaders/basic')(THREE);
var DashShader = require('./shader-dash')(THREE);
var GradientShader = require('./shader-gradient')(THREE);

var normalize = require('normalize-path-scale');
var arc = require('arc-to');
var curve = require('adaptive-bezier-curve');

var curvePath = path1();
var circlePath = normalize(arc(0, 0, 25, 0, Math.PI * 2, false, 64));
var boxPath = [[0, 0], [1, 0], [1, 1], [0, 1]];

var app = createApp({ antialias: true });
app.renderer.setClearColor('#1d1d1d', 1);

var time = 0;
setup();

function setup () {
  // Our bezier curve
  var curveGeometry = Line(curvePath);
  var mat = new THREE.ShaderMaterial(BasicShader({
    side: THREE.DoubleSide,
    diffuse: 0x5cd7ff,
    thickness: 0.1
  }));
  var mesh = new THREE.Mesh(curveGeometry, mat);
  app.scene.add(mesh);

  // Our dashed circle
  circlePath.pop();
  var circleGeometry = Line(circlePath, { distances: true, closed: true });
  var dashMat = new THREE.ShaderMaterial(DashShader({
    side: THREE.DoubleSide
  }));
  var mesh2 = new THREE.Mesh(circleGeometry, dashMat);
  mesh2.position.x = -2;
  mesh2.scale.multiplyScalar(0.5);
  app.scene.add(mesh2);

  // // Our glowing box
  circlePath.pop();
  var boxGeometry = Line(boxPath, { distances: true, closed: true });
  var boxMat = new THREE.ShaderMaterial(GradientShader({
    thickness: 0.3,
    side: THREE.DoubleSide
  }));
  var boxMesh = new THREE.Mesh(boxGeometry, boxMat);
  boxMesh.position.y = 0.5;
  boxMesh.position.z = 0.5;
  boxMesh.scale.multiplyScalar(0.5);
  app.scene.add(boxMesh);

  createLoop(function (dt) {
    time += dt / 1000;
    // animate some thickness stuff
    mat.uniforms.thickness.value = Math.sin(time * 0.5) * 0.2;

    // animate some dash properties
    dashMat.uniforms.dashDistance.value = (Math.sin(time) / 2 + 0.5) * 0.5;
    dashMat.uniforms.dashSteps.value = (Math.sin(Math.cos(time)) / 2 + 0.5) * 24;

    // animate gradient
    boxMat.uniforms.time.value = time;

    app.updateProjectionMatrix();
    app.renderer.render(app.scene, app.camera);
  }).start();
}

function path1 () {
  var curvePath = curve([40, 40], [70, 100], [120, 20], [200, 40], 5);
  curvePath.push([200, 100]);
  curvePath.push([250, 50]);

  // a bezier curve, normalized to -1.0 to 1.0
  return normalize(curvePath);
}