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/**
* @author mrdoob / http://mrdoob.com
*/
THREE.PaintViveController = function ( id ) {
THREE.ViveController.call( this, id );
var PI2 = Math.PI * 2;
var MODES = { COLOR: 0, SIZE: 1 };
var mode = MODES.COLOR;
var color = new THREE.Color( 1, 1, 1 );
var size = 1.0;
//
function generateHueTexture() {
var canvas = document.createElement( 'canvas' );
canvas.width = 256;
canvas.height = 256;
var context = canvas.getContext( '2d' );
var imageData = context.getImageData( 0, 0, 256, 256 );
var data = imageData.data;
var swatchColor = new THREE.Color();
for ( var i = 0, j = 0; i < data.length; i += 4, j ++ ) {
var x = ( ( j % 256 ) / 256 ) - 0.5;
var y = ( Math.floor( j / 256 ) / 256 ) - 0.5;
swatchColor.setHSL( Math.atan2( y, x ) / PI2, 1, ( 0.5 - Math.sqrt( x * x + y * y ) ) * 2.0 );
data[ i + 0 ] = swatchColor.r * 256;
data[ i + 1 ] = swatchColor.g * 256;
data[ i + 2 ] = swatchColor.b * 256;
data[ i + 3 ] = 256;
}
context.putImageData( imageData, 0, 0 );
return new THREE.CanvasTexture( canvas );
}
// COLOR UI
var geometry = new THREE.CircleBufferGeometry( 1, 32 );
var material = new THREE.MeshBasicMaterial( { map: generateHueTexture() } );
var colorUI = new THREE.Mesh( geometry, material );
colorUI.position.set( 0, 0.005, 0.0495 );
colorUI.rotation.x = - 1.45;
colorUI.scale.setScalar( 0.02 );
this.add( colorUI );
var geometry = new THREE.IcosahedronBufferGeometry( 0.1, 2 );
var material = new THREE.MeshBasicMaterial();
material.color = color;
var ball = new THREE.Mesh( geometry, material );
colorUI.add( ball );
// SIZE UI
var sizeUI = new THREE.Group();
sizeUI.position.set( 0, 0.005, 0.0495 );
sizeUI.rotation.x = - 1.45;
sizeUI.scale.setScalar( 0.02 );
this.add( sizeUI );
var triangleShape = new THREE.Shape();
triangleShape.moveTo( 0, - 1 );
triangleShape.lineTo( 1, 1 );
triangleShape.lineTo( - 1, 1 );
var geometry = new THREE.ShapeBufferGeometry( triangleShape );
var material = new THREE.MeshBasicMaterial( { color: 0x222222, wireframe: true } );
var sizeUIOutline = new THREE.Mesh( geometry, material );
sizeUIOutline.position.z = 0.001;
resizeTriangleGeometry( sizeUIOutline.geometry, 1.0 );
sizeUI.add( sizeUIOutline );
var geometry = new THREE.ShapeBufferGeometry( triangleShape );
var material = new THREE.MeshBasicMaterial( { side: THREE.DoubleSide } );
material.color = color;
var sizeUIFill = new THREE.Mesh( geometry, material );
sizeUIFill.position.z = 0.0011;
resizeTriangleGeometry( sizeUIFill.geometry, 0.5 );
sizeUI.add( sizeUIFill );
sizeUI.visible = false;
function onAxisChanged( event ) {
if ( this.getButtonState( 'thumbpad' ) === false ) return;
var x = event.axes[ 0 ] / 2.0;
var y = - event.axes[ 1 ] / 2.0;
if ( mode === MODES.COLOR ) {
color.setHSL( Math.atan2( y, x ) / PI2, 1, ( 0.5 - Math.sqrt( x * x + y * y ) ) * 2.0 );
ball.position.set( event.axes[ 0 ], event.axes[ 1 ], 0 );
}
if ( mode === MODES.SIZE ) {
var ratio = 0.5 - y;
size = ratio * 2;
resizeTriangleGeometry( sizeUIFill.geometry, ratio );
}
}
function resizeTriangleGeometry( geometry, ratio ) {
var x = 0, y = 0;
var fullWidth = 0.75, fullHeight = 1.5;
var angle = Math.atan( ( fullWidth / 2 ) / fullHeight );
var bottomY = y - fullHeight / 2;
var height = fullHeight * ratio;
var width = ( Math.tan( angle ) * height ) * 2;
var position = geometry.attributes.position;
position.setXYZ( 0, x, bottomY, 0 );
position.setXYZ( 1, x + width / 2, bottomY + height, 0 );
position.setXYZ( 2, x - width / 2, bottomY + height, 0 );
position.needsUpdate = true;
}
function onGripsDown() {
if ( mode === MODES.COLOR ) {
mode = MODES.SIZE;
colorUI.visible = false;
sizeUI.visible = true;
return;
}
if ( mode === MODES.SIZE ) {
mode = MODES.COLOR;
colorUI.visible = true;
sizeUI.visible = false;
return;
}
}
this.getColor = function () {
return color;
};
this.getSize = function () {
return size;
};
this.addEventListener( 'axischanged', onAxisChanged );
this.addEventListener( 'gripsdown', onGripsDown );
};
THREE.PaintViveController.prototype = Object.create( THREE.ViveController.prototype );
THREE.PaintViveController.prototype.constructor = THREE.PaintViveController;
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