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[WIP] Add three plugin #874

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114 changes: 114 additions & 0 deletions examples/three/index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>impress.js with Three.js Plugin</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r134/three.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tween.js/23.1.3/tween.umd.js"></script>
<style>
body, html {
margin: 0;
padding: 0;
height: 100%;
overflow: hidden;
}
#impress {
position: relative;
}
.step {
width: 900px;
height: 700px;
padding: 40px;
box-sizing: border-box;
font-family: Arial, sans-serif;
}
#impress-three-container {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 0;
pointer-events: none;
}
#css-grid {
width: 3000px;
height: 3000px;
display: grid;
grid-template-columns: repeat(10, 1fr);
grid-template-rows: repeat(10, 1fr);
}

.grid-cell {
border: 1px solid rgba(0, 0, 0, 0.8);
}
</style>
</head>
<body class="impress-not-supported">
<div id="impress-three-container"></div>
<div id="impress">
<div class="step" data-x="0" data-y="-1000" data-z="0" data-rotate-x="90">
<h1>x-0</h1>
<h1>y--1000</h1>
<h1>rotate-x-90</h1>
</div>
<div class="step" data-x="0" data-y="0" data-z="0" data-rotate-y="90">
<h1>x-0</h1>
<h1>y-0</h1>
<h1>rotate-y-90</h1>
</div>
<div class="step" data-x="0" data-y="0" data-z="0" data-rotate-z="90">
<h1>x-0</h1>
<h1>y-0</h1>
<h1>rotate-z-90</h1>
</div>
<div class="step" data-x="0" data-y="0" data-z="0">
<h1>x-0</h1>
<h1>y-0</h1>
</div>
<div class="step" data-x="500" data-y="0" data-z="0">
<h1>x-500</h1>
<h1>y-0</h1>
</div>
<div class="step" data-x="500" data-y="500" data-z="0">
<h1>x-500</h1>
<h1>y-500</h1>
</div>
<div class="step" data-x="0" data-y="1000" data-z="0" data-rotate-y="90">
<h1>x-0</h1>
<h1>y-1000</h1>
<h1>rotate-y-90</h1>
</div>
</div>

<script src="../../src/impress.js"></script>
<script src="../../src/lib/gc.js"></script>
<script src="../../src/lib/util.js"></script>
<script src="../../src/lib/rotation.js"></script>
<script src="../../src/plugins/autoplay/autoplay.js"></script>
<script src="../../src/plugins/blackout/blackout.js"></script>
<script src="../../src/plugins/extras/extras.js"></script>
<script src="../../src/plugins/form/form.js"></script>
<script src="../../src/plugins/fullscreen/fullscreen.js"></script>
<script src="../../src/plugins/goto/goto.js"></script>
<script src="../../src/plugins/bookmark/bookmark.js"></script>
<script src="../../src/plugins/help/help.js"></script>
<script src="../../src/plugins/impressConsole/impressConsole.js"></script>
<script src="../../src/plugins/media/media.js"></script>
<script src="../../src/plugins/mobile/mobile.js"></script>
<script src="../../src/plugins/mouse-timeout/mouse-timeout.js"></script>
<script src="../../src/plugins/navigation/navigation.js"></script>
<script src="../../src/plugins/navigation-ui/navigation-ui.js"></script>
<script src="../../src/plugins/progress/progress.js"></script>
<script src="../../src/plugins/rel/rel.js"></script>
<script src="../../src/plugins/resize/resize.js"></script>
<script src="../../src/plugins/skip/skip.js"></script>
<script src="../../src/plugins/stop/stop.js"></script>
<script src="../../src/plugins/substep/substep.js"></script>
<script src="../../src/plugins/touch/touch.js"></script>
<script src="../../src/plugins/toolbar/toolbar.js"></script>
<script src="../../src/plugins/three/three.js"></script>
<script>impress().init();</script>
</body>
</html>
124 changes: 124 additions & 0 deletions src/plugins/three/three.js
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(function (document, window) {
'use strict';

var impressThreePlugin = function (root) {
var scene, camera, renderer;
var objects = [];
var impressScale = 1;
var fov = 75; // TODO: calc the correct fov
var currentTween;

function init() {
var threeContainer = document.getElementById('impress-three-container');

scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(fov, window.innerWidth / window.innerHeight, 0.1, 10000);
renderer = new THREE.WebGLRenderer({ alpha: true });
renderer.setSize(window.innerWidth, window.innerHeight);
threeContainer.appendChild(renderer.domElement);

// TODO: just for dev, to be removed
addObjects();

requestAnimationFrame(animate);
window.addEventListener('resize', onWindowResize, false);
}

function addObjects() {
var gridHelper = new THREE.GridHelper(2000, 20);
scene.add(gridHelper);

for (var i = 0; i < 50; i++) {
var geometry = new THREE.BoxGeometry(50, 50, 50);
var material = new THREE.MeshBasicMaterial({ color: Math.random() * 0xffffff, wireframe: true });
var cube = new THREE.Mesh(geometry, material);
cube.position.set(
Math.random() * 2000 - 1000,
Math.random() * 2000 - 1000,
Math.random() * 2000 - 1000
);
scene.add(cube);
objects.push(cube);
}
}

function animate(time) {
requestAnimationFrame(animate);

TWEEN.update(time);

renderer.render(scene, camera);
}

function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}

function updateCamera(x, y, z, rotateX, rotateY, rotateZ) {
if (currentTween) {
currentTween.stop();
}

const startPos = camera.position.clone();
const startRot = camera.rotation.clone();

// Adjust coordinates for Three.js
var endPos = new THREE.Vector3(
x * impressScale,
-y * impressScale,
-z * impressScale
);
var endRot = new THREE.Euler(
THREE.MathUtils.degToRad(-rotateX),
THREE.MathUtils.degToRad(rotateY),
THREE.MathUtils.degToRad(-rotateZ)
);

var tweenObj = {
x: startPos.x, y: startPos.y, z: startPos.z,
rx: startRot.x, ry: startRot.y, rz: startRot.z
};

currentTween = new TWEEN.Tween(tweenObj)
.to({
x: endPos.x, y: endPos.y, z: endPos.z,
rx: endRot.x, ry: endRot.y, rz: endRot.z
}, 1000) // TODO: read from data-transition-duration
.easing(TWEEN.Easing.Cubic.InOut)
.onUpdate(() => {
camera.position.set(tweenObj.x, tweenObj.y, tweenObj.z);
camera.rotation.set(tweenObj.rx, tweenObj.ry, tweenObj.rz);
})
.start();
}

function updateCameraFromStep(step) {
var x = Number(step.dataset['x'] || 0);
var y = Number(step.dataset['y'] || 0);
var z = Number(step.dataset['z'] || 0);
var rotateX = Number(step.dataset['rotateX'] || 0);
var rotateY = Number(step.dataset['rotateY'] || 0);
var rotateZ = Number(step.dataset['rotateZ'] || 0);

updateCamera(x, y, z, rotateX, rotateY, rotateZ);
}

init();

document.addEventListener("impress:stepleave", function (event) {
// TODO: latency exists, consider a better solution
// Or maybe it's beacouse of easing function?
var nextStep = event.detail.next;
updateCameraFromStep(nextStep);
});

return {
updateCamera: updateCamera
};
};

impress.addPreInitPlugin(impressThreePlugin);

})(document, window);