How to use three-dev - 3 common examples
To help you get started, we’ve selected a few three-dev examples, based on popular ways it is used in public projects.
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aframevr / aframe / lib / vendor / VREffect.js View on Github 
function fovPortToProjection( fov, rightHanded, zNear, zFar ) {
rightHanded = rightHanded === undefined ? true : rightHanded;
zNear = zNear === undefined ? 0.01 : zNear;
zFar = zFar === undefined ? 10000.0 : zFar;
var handednessScale = rightHanded ? - 1.0 : 1.0;
// start with an identity matrix
var mobj = new THREE.Matrix4();
var m = mobj.elements;
// and with scale/offset info for normalized device coords
var scaleAndOffset = fovToNDCScaleOffset( fov );
// X result, map clip edges to [-w,+w]
m[ 0 * 4 + 0 ] = scaleAndOffset.scale[ 0 ];
m[ 0 * 4 + 1 ] = 0.0;
m[ 0 * 4 + 2 ] = scaleAndOffset.offset[ 0 ] * handednessScale;
m[ 0 * 4 + 3 ] = 0.0;
// Y result, map clip edges to [-w,+w]
// Y offset is negated because this proj matrix transforms from world coords with Y=up,
// but the NDC scaling has Y=down (thanks D3D?)
m[ 1 * 4 + 0 ] = 0.0;
m[ 1 * 4 + 1 ] = scaleAndOffset.scale[ 1 ];if ( canvas.mozRequestFullScreen ) {
canvas.mozRequestFullScreen( { vrDisplay: vrHMD } );
} else if ( canvas.webkitRequestFullscreen ) {
canvas.webkitRequestFullscreen( { vrDisplay: vrHMD } );
}
};
// render
var cameraL = new THREE.PerspectiveCamera();
var cameraR = new THREE.PerspectiveCamera();
this.render = function ( scene, camera ) {
if ( vrHMD ) {
var sceneL, sceneR;
if ( Array.isArray( scene ) ) {
sceneL = scene[ 0 ];
sceneR = scene[ 1 ];
} else {
sceneL = scene;
sceneR = scene;if ( canvas.mozRequestFullScreen ) {
canvas.mozRequestFullScreen( { vrDisplay: vrHMD } );
} else if ( canvas.webkitRequestFullscreen ) {
canvas.webkitRequestFullscreen( { vrDisplay: vrHMD } );
}
};
// render
var cameraL = new THREE.PerspectiveCamera();
var cameraR = new THREE.PerspectiveCamera();
this.render = function ( scene, camera ) {
if ( vrHMD ) {
var sceneL, sceneR;
if ( Array.isArray( scene ) ) {
sceneL = scene[ 0 ];
sceneR = scene[ 1 ];
} else {
sceneL = scene;
