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camera-texture.html
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camera-texture.html
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<!DOCTYPE html>
<html>
<head>
<title>A-Frame Examples</title>
<link rel="icon" type="image/png" href="data:image/png;base64,iVBORw0KGgo=">
<script src="js/aframe-v1.3.0.js"></script>
<script src="js/aframe-environment-component.js"></script>
<script src="js/controller-listener.js"></script>
<script src="js/player-move.js"></script>
<script src="js/raycaster-extras.js"></script>
</head>
<body>
<script>
AFRAME.registerComponent("camera-fun", {
init: function ()
{
let rtWidth = 1024;
let rtHeight = 1024;
// render the scene to this texture (which goes on to an object in a different scene; avoid "WebGL feedback loop error")
this.renderTarget0 = new THREE.WebGLRenderTarget(rtWidth, rtHeight);
this.renderTarget0.texture.magFilter = THREE.NearestFilter;
this.renderTarget0.texture.minFilter = THREE.NearestFilter;
this.renderTarget0.texture.generateMipmaps = false;
this.renderTarget1 = new THREE.WebGLRenderTarget(rtWidth, rtHeight);
this.renderTarget1.texture.magFilter = THREE.NearestFilter;
this.renderTarget1.texture.minFilter = THREE.NearestFilter;
this.renderTarget1.texture.generateMipmaps = false;
// separate scene #1 for texture processing
const quad = new THREE.Mesh(
new THREE.PlaneGeometry(2, 2),
new THREE.MeshBasicMaterial( {map: this.renderTarget0.texture} ) );
this.rtScene = new THREE.Scene();
this.rtScene.add(quad);
this.rtCamera = new THREE.OrthographicCamera();
this.rtCamera.position.z = 0.1;
// aspect ratio corrections
let renderer = this.el.sceneEl.renderer;
let size = new THREE.Vector2();
renderer.getSize(size);
let box = document.getElementById("box");
box.setAttribute("material", "src", this.renderTarget1.texture);
box.setAttribute("width", size.x / size.y);
box.setAttribute("depth", size.x / size.y);
this.el.sceneEl.renderer.xr.addEventListener( 'sessionstart', function() {
console.log("session started");
renderer.getSize(size);
box.setAttribute("width", size.x / size.y);
box.setAttribute("depth", size.x / size.y);
});
this.el.sceneEl.renderer.xr.addEventListener( 'sessionend', function() {
console.log("session ended");
renderer.getSize(size);
box.setAttribute("width", size.x / size.y);
box.setAttribute("depth", size.x / size.y);
});
},
tick: function(t, dt)
{
// temporarily disable XR to prevent screen flickering
const scene = this.el.sceneEl.object3D;
const camera = this.el.sceneEl.camera;
const renderer = this.el.sceneEl.renderer;
const currentRenderTarget = renderer.getRenderTarget();
const currentXrEnabled = renderer.xr.enabled;
const currentShadowAutoUpdate = renderer.shadowMap.autoUpdate;
renderer.xr.enabled = false;
renderer.shadowMap.autoUpdate = false;
// do extra rendering
// make a copy of the main scene in target 0
renderer.setRenderTarget(this.renderTarget0);
renderer.render(scene, camera);
// make a copy for rt1 which is used by an object in the main scene
renderer.setRenderTarget(this.renderTarget1);
renderer.render(this.rtScene, this.rtCamera);
// enable XR
renderer.xr.enabled = currentXrEnabled;
renderer.shadowMap.autoUpdate = currentShadowAutoUpdate;
renderer.setRenderTarget(currentRenderTarget);
}
});
</script>
<a-scene environment="preset: default;">
<a-assets>
<img id="gradient" src="images/gradient-fade.png" />
</a-assets>
<!-- use a simple mesh for raycasting/navigation -->
<a-plane
width="100" height="100"
rotation="-90 0 0"
position="0 0.01 0"
visible="false"
class="navMesh"
raycaster-target>
</a-plane>
<a-entity
id="player"
position="0 0 1"
player-move="controllerListenerId: #controller-data;
navigationMeshClass: navMesh;">
<a-camera></a-camera>
<a-entity
id="controller-data"
controller-listener="leftControllerId: #left-controller;
rightControllerId: #right-controller;">
</a-entity>
<a-entity
id="left-controller"
oculus-touch-controls="hand: left">
</a-entity>
<a-entity
id="right-controller"
oculus-touch-controls="hand: right"
raycaster="objects: .raycaster-target, .navMesh;"
raycaster-extras="controllerListenerId: #controller-data;
beamImageSrc: #gradient; beamLength: 0.5;">
</a-entity>
</a-entity>
<a-torus-knot
p="2" q="3" radius="0.5" radius-tubular="0.1"
position = "-2.5 1.5 -4"
color="#CC3333"
raycaster-target>
</a-torus-knot>
<a-box
width = "2" height = "1" depth = "1"
position = "-1.1 0.5 -3"
rotation = "0 45 0"
color = "#FF8800"
raycaster-target>
</a-box>
<a-sphere
id="sphere"
radius = "1.25"
position = "0 1.25 -5"
color = "#DDBB00"
raycaster-target>
</a-sphere>
<a-box
camera-fun
id="box"
position = " 1 0.75 -3"
material = "shader: flat;"
raycaster-target="glowOnHover: false;">
</a-box>
<a-cone
radius-bottom = "1" radius-top = "0" height = "2"
position = "3 1 -4"
color = "#4444CC"
raycaster-target>
</a-cone>
<a-torus
radius="0.5" radius-tubular="0.1"
position = "2 3 -4"
rotation = "30 -20 0"
color="#8800FF"
raycaster-target>
</a-torus>
</a-scene>
</body>
</html>