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public/components/sections/ThreeSection.jsx

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+/*
+ *  ThreeJS Section
+ *    Section for Three JS.
+ *
+ *  Version:
+ *    1.0.0 - 2018/03/10
+ */
+
+import React from 'react';
+import Section from './../Section';
+import * as THREE from 'three';
+
+class ThreeSection extends React.Component {
+  constructor(props) {
+    super(props);
+  }
+
+  componentDidMount() {
+    if(typeof this.scene !== typeof undefined) return;
+    this.scene = new THREE.Scene();
+    this.camera = new THREE.PerspectiveCamera(17, window.innerWidth / window.innerHeight, 0.1, 1000 );
+    this.isAlive = true;
+
+    this.render = new THREE.WebGLRenderer({canvas: this.refs.canvas, alpha: true});
+    this.render.setSize(window.innerWidth, window.innerHeight);
+
+    this.camera.position.z = 5;
+
+    this.ambient1 = new THREE.AmbientLight(0xFFCCFF, 0.2);
+    this.scene.add(this.ambient1);
+    this.ambient2 = new THREE.AmbientLight(0xFFFFFF, 0.5);
+    this.scene.add(this.ambient2);
+
+    this.light = new THREE.DirectionalLight(0x22BBFF, 0.5);
+    this.light.position.x = this.camera.position.x;
+    this.light.position.y = this.camera.position.y;
+    this.light.position.z = this.camera.position.z + 8;
+    this.scene.add(this.light);
+
+    if(typeof this.props.onSetup !== typeof undefined) {
+      this.props.onSetup(this.scene, this.camera, this.renderer);
+    }
+
+    this.onFrame();
+  }
+
+  componentWillUnmount() {
+    this.isAlive = false;
+  }
+
+  onFrame() {
+    if(!this.isAlive) return;
+
+    let now = new Date();
+    let width = this.refs.canvasSpace.clientWidth;
+    let height = this.refs.canvasSpace.clientHeight;
+    let diff = now.getTime() - (this.lastTime || new Date()).getTime();
+    diff = diff / 1000;
+
+    let hfov = 95;
+    let hfovRad = hfov * Math.PI / 180;
+    let vfovRad = 2*Math.atan(Math.tan(hfovRad/2)*height/width);
+
+    this.render.setSize(width, height);
+    this.render.setPixelRatio(window.devicePixelRatio);
+
+    this.camera.aspect = width / height;
+    this.camera.fov = vfovRad * 180 / Math.PI;
+    this.camera.updateProjectionMatrix();
+    requestAnimationFrame(this.onFrame.bind(this));
+
+    if(typeof this.props.onRender !== typeof undefined) {
+      this.props.onRender(diff);
+    }
+
+    this.render.render(this.scene, this.camera);
+    this.lastTime = now;
+  }
+
+  render() {
+    return (
+      <Section section="three" full>
+        <div className="c-section--style-three__canvas" ref="canvasSpace"></div>
+        <canvas ref="canvas" className="c-section--style-three__canvas">
+        </canvas>
+      </Section>
+    )
+  }
+}
+
+export default ThreeSection;