THREE.js function - convert to accept a different initial rotation - javascript

I'm trying to convert the code found here http://benchung.com/smooth-mouse-rotation-three-js/ to and AFRAME component.
This is all good if the initial rotation is '0 0 0', but now I'm trying to set a different initial rotation.
#Piotr kindly put a fiddle together for me
But basically I want to be able to set that initial rotation and then the object rotate on click and drag using the rest of the function.
AFRAME.registerComponent('drag-rotate',{
schema : {
mouseSpeed : {default:1},
touchSpeed : {default:2},
rotation : {type: 'vec3'},
disabled: {default: false}
},
windowHalfX: window.innerWidth / 2,
windowHalfY: window.innerHeight / 2,
targetRotationX:0,
targetRotationOnMouseDownX:0,
targetRotationY:0,
targetRotationOnMouseDownY: 0,
mouseX:0,
mouseXOnMouseDown:0,
mouseY: 0,
mouseYOnMouseDown: 0,
init : function(){
this.ifMouseDown = false
document.addEventListener('touchstart',this.onTouchStart.bind(this))
document.addEventListener('touchend',this.onTouchEnd.bind(this))
document.addEventListener('touchmove',this.onTouchMove.bind(this))
document.addEventListener('mousedown',this.OnDocumentMouseDown.bind(this))
window.addEventListener( 'resize', this.onWindowResize.bind(this) )
},
update: function (oldData) {
if(!AFRAME.utils.deepEqual(oldData.rotation, this.data.rotation)){
this.el.setAttribute('rotation', this.data.rotation)
this._targetRotation = this.el.object3D.rotation.clone()
this.targetRotationX = this._targetRotation.x
this.targetRotationY = this._targetRotation.y
}
},
remove: function() {
document.removeEventListener('touchstart',this.onTouchStart.bind(this))
document.removeEventListener('mousedown',this.OnDocumentMouseDown.bind(this))
window.removeEventListener( 'resize', this.onWindowResize.bind(this))
},
onWindowResize: function () {
this.windowHalfX = window.innerWidth / 2
this.windowHalfY = window.innerHeight / 2
},
OnDocumentMouseDown : function(event){
this.ifMouseDown = ['A-SCENE', 'CANVAS'].includes(event.target?.tagName)
if(this.ifMouseDown){
document.addEventListener('mouseup',this.OnDocumentMouseUp.bind(this))
document.addEventListener('mousemove',this.OnDocumentMouseMove.bind(this))
this.mouseXOnMouseDown = event.clientX - this.windowHalfX
this.targetRotationOnMouseDownX = this.targetRotationX
this.mouseYOnMouseDown = event.clientY - this.windowHalfY
this.targetRotationOnMouseDownY = this.targetRotationY
}
},
OnDocumentMouseUp : function(){
this.ifMouseDown = false
document.removeEventListener('mouseup',this.OnDocumentMouseUp.bind(this))
document.removeEventListener('mousemove',this.OnDocumentMouseMove.bind(this))
},
OnDocumentMouseMove : function(event)
{
if(this.ifMouseDown){
this.mouseX = event.clientX - this.windowHalfX;
this.mouseY = event.clientY - this.windowHalfY;
this.targetRotationY = this.targetRotationOnMouseDownY + (this.mouseY - this.mouseYOnMouseDown) * this.data.mouseSpeed/1000
this.targetRotationX = this.targetRotationOnMouseDownX + (this.mouseX - this.mouseXOnMouseDown) * this.data.mouseSpeed/1000
}
},
onTouchStart: function(event){
if (event.touches.length == 1) {
this.ifMouseDown = ['A-SCENE', 'CANVAS'].includes(event.target?.tagName)
this.x_cord = event.touches[ 0 ].pageX
this.y_cord = event.touches[ 0 ].pageY
document.addEventListener('touchend',this.onTouchEnd.bind(this))
document.addEventListener('touchmove',this.onTouchMove.bind(this))
this.mouseXOnMouseDown = event.touches[ 0 ].pageX - this.windowHalfX
this.targetRotationOnMouseDownX = this.targetRotationX
this.mouseYOnMouseDown = event.touches[ 0 ].pageX - this.windowHalfY
this.targetRotationOnMouseDownY = this.targetRotationY
}
},
onTouchMove: function(event){
if(this.ifMouseDown){
this.mouseX = event.touches[ 0 ].pageX - this.windowHalfX;
this.mouseY = event.touches[ 0 ].pageY - this.windowHalfY;
this.targetRotationY = this.targetRotationOnMouseDownY + (this.mouseY - this.mouseYOnMouseDown) * this.data.touchSpeed/1000
this.targetRotationX = this.targetRotationOnMouseDownX + (this.mouseX - this.mouseXOnMouseDown) * this.data.touchSpeed/1000
}
},
onTouchEnd: function(event){
document.removeEventListener('touchend',this.onTouchEnd.bind(this))
document.removeEventListener('touchmove',this.onTouchMove.bind(this))
this.ifMouseDown = false
},
tick: function(){
if(this.data.disabled)
return
this.el.object3D.rotation.y += ( this.targetRotationX - this.el.object3D.rotation.y ) * 0.1
this.finalRotationY = (this.targetRotationY - this.el.object3D.rotation.x)
if (this.el.object3D.rotation.x <= 1 && this.el.object3D.rotation.x >= -1 )
this.el.object3D.rotation.x += this.finalRotationY * 0.1
if (this.el.object3D.rotation.x > 1 )
this.el.object3D.rotation.x = 1
if (this.el.object3D.rotation.x < -1 )
this.el.object3D.rotation.x = -1
},
});
The initial angle I set with AFRAME in the update function isn't the same as set here. i.e. with this component disabled
With it enabled
If I zero these values as in the example code then the rotation is '0 0 0' and it works as normal.
this.el.setAttribute('rotation', this.data.rotation)
this._targetRotation = this.el.object3D.rotation.clone()
this.targetRotationX = 0
this.targetRotationY = 0

This magic code worked
this.el.object3D.rotation.y += ( (this._targetRotation.y + this.targetRotationX) - this.el.object3D.rotation.y ) * 0.1
this.finalRotationY = ((this._targetRotation.x + this.targetRotationY) - this.el.object3D.rotation.x)

Related

Using jQuery Pan and Zoomooz together to pan and zoom DOM element

Seen a few similar questions on here but most seem to refer to zooming and panning images, I can't find anything that answers my problem.
I'm looking to create something like https://timmywil.com/panzoom/demo/, but I want to have a DOM element zoom on click, then pan around on mouse move.
I've been able to come up with something that's very nearly there, example here. https://jsfiddle.net/kevngibsn/5okxr8n3/29/
For this I'm using Zoomooz to handle the zoom, and jQuery Pan to take care of the panning. The issue with this example is that jQuery Pan works out the size of the DOM element on page load and doesn't take into account the increased size after zoom, so mouse move doesn't pan to the edges.
Here's the code from jQuery Pan:
(function( $ ){
var getSize = function($element) {
return {
'width': $element.width(),
'height': $element.height()
};
};
var toCoords = function(x, y) {
return {'x': x, 'y': y};
};
var vectorsEqual = function(v1, v2) {
return v1.x == v2.x && v1.y == v2.y;
}
$.fn.pan = function(options) {
//Container is element this plugin is applied to;
//we're pan it's child element, content
var container = this;
var content = this.children(':first');
//Precalculate the limits of panning - offset stores
//the current amount of pan throughout
var offset = toCoords(
Number(content.css('left').replace('px', '')) | 0,
Number(content.css('top').replace('px', '')) | 0
);
var containerSize = getSize(container);
var contentSize = getSize(content);
var minOffset = toCoords(
-contentSize.width + containerSize.width,
-contentSize.height + containerSize.height
);
var maxOffset = toCoords(0, 0);
//By default, assume mouse sensitivity border
//is 25% of the smallest dimension
var defaultMouseEdge = 0.25 * Math.min(
containerSize.width,
containerSize.height
);
var settings = $.extend( {
'autoSpeedX' : 0,
'autoSpeedY' : 0,
'mouseControl' : 'kinetic',
'kineticDamping' : 0.8,
'mouseEdgeSpeed' : 5,
'mouseEdgeWidth' : defaultMouseEdge,
'proportionalSmoothing' : 0.5,
'updateInterval' : 50,
'mousePan' : null
}, options);
//Mouse state variables, set by bound mouse events below
var mouseOver = false;
var mousePanningDirection = toCoords(0, 0);
var mousePosition = toCoords(0, 0);
var dragging = false;
var lastMousePosition = null;
var kineticVelocity = toCoords(0, 0);
//Delay in ms between updating position of content
var updateInterval = settings.updateInterval;
var onInterval = function() {
if (container.hasClass('pan-off')) return false; //Temporarily disabling pan add/remove class pan-off
var mouseControlHandlers = {
'edge' : updateEdge,
'proportional' : updateProportional,
'kinetic' : updateKinetic
};
var currentHandler = settings.mouseControl;
if(!mouseControlHandlers[currentHandler]()) {
//The handler isn't active - just pan normally
offset.x += settings.autoSpeedX;
offset.y += settings.autoSpeedY;
}
//If the previous updates have take the content
//outside the allowed min/max, bring it back in
constrainToBounds();
//If we're panning automatically, make sure we're
//panning in the right direction if the content has
//moved as far as it can go
if(offset.x == minOffset.x) settings.autoSpeedX = Math.abs(settings.autoSpeedX);
if(offset.x == maxOffset.x) settings.autoSpeedX = -Math.abs(settings.autoSpeedX);
if(offset.y == minOffset.y) settings.autoSpeedY = Math.abs(settings.autoSpeedY);
if(offset.y == maxOffset.y) settings.autoSpeedY = -Math.abs(settings.autoSpeedY);
//Finally, update the position of the content
//with our carefully calculated value
content.css('left', offset.x + "px");
content.css('top', offset.y + "px");
}
var updateEdge = function() {
if(!mouseOver) return false;
//The user's possibly maybe mouse-navigating,
//so we'll find out what direction in case we need
//to handle any callbacks
var newDirection = toCoords(0, 0);
//If we're in the interaction zones to either
//end of the element, pan in response to the
//mouse position.
if(mousePosition.x < settings.mouseEdgeWidth) {
offset.x += settings.mouseEdgeSpeed;
newDirection.x = -1;
}
if (mousePosition.x > containerSize.width - settings.mouseEdgeWidth) {
offset.x -= settings.mouseEdgeSpeed;
newDirection.x = 1;
}
if(mousePosition.y < settings.mouseEdgeWidth) {
offset.y += settings.mouseEdgeSpeed;
newDirection.y = -1;
}
if (mousePosition.y > containerSize.height - settings.mouseEdgeWidth) {
offset.y -= settings.mouseEdgeSpeed;
newDirection.y = 1;
}
updateMouseDirection(newDirection);
return true;
}
var updateProportional = function() {
if(!mouseOver) return false;
var rx = mousePosition.x / containerSize.width;
var ry = mousePosition.y / containerSize.height;
targetOffset = toCoords(
(minOffset.x - maxOffset.x) * rx + maxOffset.x,
(minOffset.y - maxOffset.y) * ry + maxOffset.y
);
var damping = 1 - settings.proportionalSmoothing;
offset = toCoords(
(targetOffset.x - offset.x) * damping + offset.x,
(targetOffset.y - offset.y) * damping + offset.y
)
return true;
}
var updateKinetic = function() {
if(dragging) {
if(lastMousePosition == null) {
lastMousePosition = toCoords(mousePosition.x, mousePosition.y);
}
kineticVelocity = toCoords(
mousePosition.x - lastMousePosition.x,
mousePosition.y - lastMousePosition.y
);
lastMousePosition = toCoords(mousePosition.x, mousePosition.y);
}
offset.x += kineticVelocity.x;
offset.y += kineticVelocity.y;
kineticVelocity = toCoords(
kineticVelocity.x * settings.kineticDamping,
kineticVelocity.y * settings.kineticDamping
);
//If the kinetic velocity is still greater than a small threshold, this
//function is still controlling movement so we return true so autopanning
//doesn't interfere.
var speedSquared = Math.pow(kineticVelocity.x, 2) + Math.pow(kineticVelocity.y, 2);
return speedSquared > 0.01
}
var constrainToBounds = function() {
if(offset.x < minOffset.x) offset.x = minOffset.x;
if(offset.x > maxOffset.x) offset.x = maxOffset.x;
if(offset.y < minOffset.y) offset.y = minOffset.y;
if(offset.y > maxOffset.y) offset.y = maxOffset.y;
}
var updateMouseDirection = function(newDirection) {
if(!vectorsEqual(newDirection, mousePanningDirection)) {
mousePanningDirection = newDirection;
if(settings.mousePan) {
settings.mousePan(mousePanningDirection);
}
}
}
this.bind('mousemove', function(evt) {
mousePosition.x = evt.pageX - container.offset().left;
mousePosition.y = evt.pageY - container.offset().top;
mouseOver = true;
});
this.bind('mouseleave', function(evt) {
mouseOver = false;
dragging = false;
lastMousePosition = null;
updateMouseDirection(toCoords(0, 0));
});
this.bind('mousedown', function(evt) {
dragging = true;
return false; //Prevents FF from thumbnailing & dragging
});
this.bind('mouseup', function(evt) {
dragging = false;
lastMousePosition = null;
});
//Kick off the main panning loop and return
//this to maintain jquery chainability
setInterval(onInterval, updateInterval);
return this;
};
})( jQuery );
I'd at about my limit on this one, any advice on how to get that panning the whole element?

How to prevent draggable handles in range slider form overlapping?

I have to prevent dragable handles in range slider form overlapping . It is vanilla js plugin.
I tried to disable updating offset if the difference between two handles position is lower than 20px. It works sometimes, but the barrier is not precise. The movement is choppy when the handles are near to each other.The handle cannot be dragged immediately, but after few movements.
Here are the fragments of the plugin code:
// HELPERS
// map slider range to value range
Number.prototype.map = function(in_min, in_max, out_min, out_max) {
return (this - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
// round to nearest multiple
Number.prototype.roundTo = function(num) {
var resto = this % num;
if (resto <= (num / 2)) {
return this - resto;
} else {
return this + num - resto;
}
}
//EVENTS
var EVmove = ('ontouchstart' in document.documentElement) ? 'touchmove' : 'mousemove',
EVmove = ('ontouchstart' in document.documentElement) ? 'touchmove' : 'mousemove',
EVend = ('ontouchstart' in document.documentElement) ? 'touchend' : 'mouseup';
document.addEventListener(EVmove, actions.move, false);
document.addEventListener(EVend, function() {
return movebar = false;
}, false);
document.addEventListener(EVstart, function() {
return movebar = true;
}, false);
var movebar = true;
// MOVE HANDLE
actions.move = function(event) {
var clientX = ('ontouchstart' in document.documentElement) ? event.touches[0].clientX : event.clientX;
leftOffset = clientX - posX;
// move handle bar
if (movebar) {
element.style.left = leftOffset + "px";
var v = leftOffset.map(0, elWidth, 0, window.range); // 0
var value = v.roundTo(step);
output.innerHTML = value.toFixed(2);
// prevent handles ovelaping
if (vsOpts.range) {
var diff = Math.abs(parseInt(handle1.offsetLeft) - parseInt(handle2.offsetLeft));
if (diff < 20) {
movebar = false;
}
}
}
}
I solved it by assigning position of the opposite handle as a limit position of the current handle
document.addEventListener(EVstart, function(event) {
if (event.target.id == "vslider-handle1") {
useHandle1 = true
} else {
useHandle1 = false
}
return movebar = true;
}, false);
}
handle1Limit=parseInt(handle2.offsetLeft);
handle2Limit=parseInt(handle1.offsetLeft);
handle1Pos= parseInt(handle1.offsetLeft);
handle2Pos= parseInt(handle2.offsetLeft);
if(useHandle1){
if(handle1Pos>=handle1Limit){
handle1.style.left = handle1Limit + "px";
handle2.style.left = handle1Limit + "px";
}
}
else{
if(handle2Pos<=handle2Limit){
handle2.style.left = handle2Limit + "px";
handle1.style.left = handle2Limit + "px";
}
}

Adding decimals to rangeslider

This is the function I'm using for making the range slider:
function rangeSlider(id, onDrag) {
var range = document.getElementById(id),
dragger = range.children[0],
draggerWidth = 20, // width of your dragger
down = false,
rangeWidth, rangeLeft;
dragger.style.width = draggerWidth + 'px';
dragger.style.left = -draggerWidth + 'px';
dragger.style.marginLeft = (draggerWidth / 2) + 'px';
range.addEventListener("mousedown", function(e) {
rangeWidth = this.offsetWidth;
rangeLeft = this.offsetLeft;
down = true;
updateDragger(e);
return false;
});
document.addEventListener("mousemove", function(e) {
updateDragger(e);
});
document.addEventListener("mouseup", function() {
down = false;
});
function updateDragger(e) {
if (down && e.pageX >= rangeLeft && e.pageX <= (rangeLeft + rangeWidth)) {
dragger.style.left = e.pageX - rangeLeft - draggerWidth + 'px';
if (typeof onDrag == "function") onDrag(Math.round(((e.pageX - rangeLeft) / rangeWidth) * 100));
}
}
}
// Run!
rangeSlider('range-slider-1', function(value) {
document.getElementById('test-result').innerHTML = value + '%';
});
rangeSlider('range-slider-2', function(value) {
document.getElementById('test-result').innerHTML = value + '%';
});
JSBIN: http://jsbin.com/yuvekecodo/edit?html,js,output
How can I have the output in decimals?
For example if I set the range from 10 - 100 I want it to be able to have the decimals. 10.01, 10.02, 10.03 ~ 99.97. 99.98, 99.99, etc.
What is the best way to achieve this?
Thanks guys, I'm loosing my mind over this for days.
Cheers.
Thanksl
Please try this may help to get 2 digit decimal point values:
if (typeof onDrag == "function") onDrag(parseFloat(((e.pageX - rangeLeft) / rangeWidth) * 100).toFixed(2));
Use it for like:
function updateDragger(e) {
if (down && e.pageX >= rangeLeft && e.pageX <= (rangeLeft + rangeWidth)) {
dragger.style.left = e.pageX - rangeLeft - draggerWidth + 'px';
var startpnt=10,endpnt=50,baseval_percent,baseval;
baseval_percent = ((e.pageX - rangeLeft) / rangeWidth) * 100;
baseval = (endpnt-startpnt)*baseval_percent/100;
baseval = baseval+startpnt;
if (typeof onDrag == "function") onDrag(parseFloat(baseval).toFixed(2));
}
}

Three.js OrbitControls Orthographic Panning

In my program, the further out you zoom, the slower you can pan around. So, I want to increase the panning speed based on the zoom level. I've tried .panSpeed, but that doesn't work, and .panSpeed doesn't seem to exist anymore in OrbitControls.js. Is there another function that I can use?
Here is the documentation I looked at for Three.js OrbitControls:
https://github.com/mrdoob/three.js/blob/master/examples/js/controls/OrbitControls.js
If you look in the documentation you just linked youll'find
// Set to false to disable panning
this.enablePan = true;
this.keyPanSpeed = 7.0; // pixels moved per arrow key push
Maybe .keyPanSpeed is what you're looking for.
UPDATE 1:
In the OrbitControls.js you have the following function to handle pan:
function pan( deltaX, deltaY ) {
var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
constraint.pan( deltaX, deltaY, element.clientWidth, element.clientHeight );
}
So if for example you multiply deltaX and deltaY by 10 you'll see the pan going 10 times faster:
constraint.pan( deltaX * 10, deltaY * 10, element.clientWidth, element.clientHeight );
Try to insert your calculations based on zoom right there, it should work.
UPDATE 2:
Actually I'm using an older version of OrbitControls, which is slightly different from the current one. Here it is:
/**
* #author qiao / https://github.com/qiao
* #author mrdoob / http://mrdoob.com
* #author alteredq / http://alteredqualia.com/
* #author WestLangley / http://github.com/WestLangley
* #author erich666 / http://erichaines.com
*/
/*global THREE, console */
( function () {
function OrbitConstraint ( object ) {
this.object = object;
// "target" sets the location of focus, where the object orbits around
// and where it pans with respect to.
this.target = new THREE.Vector3();
// Limits to how far you can dolly in and out ( PerspectiveCamera only )
this.minDistance = 0;
this.maxDistance = Infinity;
// Limits to how far you can zoom in and out ( OrthographicCamera only )
this.minZoom = 0;
this.maxZoom = Infinity;
// How far you can orbit vertically, upper and lower limits.
// Range is 0 to Math.PI radians.
this.minPolarAngle = 0; // radians
this.maxPolarAngle = Math.PI; // radians
// How far you can orbit horizontally, upper and lower limits.
// If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
this.minAzimuthAngle = - Infinity; // radians
this.maxAzimuthAngle = Infinity; // radians
// Set to true to enable damping (inertia)
// If damping is enabled, you must call controls.update() in your animation loop
this.enableDamping = false;
this.dampingFactor = 0.25;
////////////
// internals
var scope = this;
var EPS = 0.000001;
// Current position in spherical coordinate system.
var theta;
var phi;
// Pending changes
var phiDelta = 0;
var thetaDelta = 0;
var scale = 1;
var panOffset = new THREE.Vector3();
var zoomChanged = false;
// API
this.getPolarAngle = function () {
return phi;
};
this.getAzimuthalAngle = function () {
return theta;
};
this.rotateLeft = function ( angle ) {
thetaDelta -= angle;
};
this.rotateUp = function ( angle ) {
phiDelta -= angle;
};
// pass in distance in world space to move left
this.panLeft = function() {
var v = new THREE.Vector3();
return function panLeft ( distance ) {
var te = this.object.matrix.elements;
// get X column of matrix
v.set( te[ 0 ], te[ 1 ], te[ 2 ] );
v.multiplyScalar( - distance );
panOffset.add( v );
};
}();
// pass in distance in world space to move up
this.panUp = function() {
var v = new THREE.Vector3();
return function panUp ( distance ) {
var te = this.object.matrix.elements;
// get Y column of matrix
v.set( te[ 4 ], te[ 5 ], te[ 6 ] );
v.multiplyScalar( distance );
panOffset.add( v );
};
}();
// pass in x,y of change desired in pixel space,
// right and down are positive
this.pan = function ( deltaX, deltaY, screenWidth, screenHeight ) {
if ( scope.object instanceof THREE.PerspectiveCamera ) {
// perspective
var position = scope.object.position;
var offset = position.clone().sub( scope.target );
var targetDistance = offset.length();
// half of the fov is center to top of screen
targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
// we actually don't use screenWidth, since perspective camera is fixed to screen height
scope.panLeft( 2 * deltaX * targetDistance / screenHeight );
scope.panUp( 2 * deltaY * targetDistance / screenHeight );
} else if ( scope.object instanceof THREE.OrthographicCamera ) {
// orthographic
scope.panLeft( deltaX * ( scope.object.right - scope.object.left ) / screenWidth );
scope.panUp( deltaY * ( scope.object.top - scope.object.bottom ) / screenHeight );
} else {
// camera neither orthographic or perspective
console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
}
};
this.dollyIn = function ( dollyScale ) {
if ( scope.object instanceof THREE.PerspectiveCamera ) {
scale /= dollyScale;
} else if ( scope.object instanceof THREE.OrthographicCamera ) {
scope.object.zoom = Math.max( this.minZoom, Math.min( this.maxZoom, this.object.zoom * dollyScale ) );
scope.object.updateProjectionMatrix();
zoomChanged = true;
} else {
console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
}
};
this.dollyOut = function ( dollyScale ) {
if ( scope.object instanceof THREE.PerspectiveCamera ) {
scale *= dollyScale;
} else if ( scope.object instanceof THREE.OrthographicCamera ) {
scope.object.zoom = Math.max( this.minZoom, Math.min( this.maxZoom, this.object.zoom / dollyScale ) );
scope.object.updateProjectionMatrix();
zoomChanged = true;
} else {
console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
}
};
this.update = function() {
var offset = new THREE.Vector3();
// so camera.up is the orbit axis
var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
var quatInverse = quat.clone().inverse();
var lastPosition = new THREE.Vector3();
var lastQuaternion = new THREE.Quaternion();
return function () {
var position = this.object.position;
offset.copy( position ).sub( this.target );
// rotate offset to "y-axis-is-up" space
offset.applyQuaternion( quat );
// angle from z-axis around y-axis
theta = Math.atan2( offset.x, offset.z );
// angle from y-axis
phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y );
theta += thetaDelta;
phi += phiDelta;
// restrict theta to be between desired limits
theta = Math.max( this.minAzimuthAngle, Math.min( this.maxAzimuthAngle, theta ) );
// restrict phi to be between desired limits
phi = Math.max( this.minPolarAngle, Math.min( this.maxPolarAngle, phi ) );
// restrict phi to be betwee EPS and PI-EPS
phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) );
var radius = offset.length() * scale;
// restrict radius to be between desired limits
radius = Math.max( this.minDistance, Math.min( this.maxDistance, radius ) );
// move target to panned location
this.target.add( panOffset );
offset.x = radius * Math.sin( phi ) * Math.sin( theta );
offset.y = radius * Math.cos( phi );
offset.z = radius * Math.sin( phi ) * Math.cos( theta );
// rotate offset back to "camera-up-vector-is-up" space
offset.applyQuaternion( quatInverse );
position.copy( this.target ).add( offset );
this.object.lookAt( this.target );
if ( this.enableDamping === true ) {
thetaDelta *= ( 1 - this.dampingFactor );
phiDelta *= ( 1 - this.dampingFactor );
} else {
thetaDelta = 0;
phiDelta = 0;
}
scale = 1;
panOffset.set( 0, 0, 0 );
// update condition is:
// min(camera displacement, camera rotation in radians)^2 > EPS
// using small-angle approximation cos(x/2) = 1 - x^2 / 8
if ( zoomChanged ||
lastPosition.distanceToSquared( this.object.position ) > EPS ||
8 * ( 1 - lastQuaternion.dot( this.object.quaternion ) ) > EPS ) {
lastPosition.copy( this.object.position );
lastQuaternion.copy( this.object.quaternion );
zoomChanged = false;
return true;
}
return false;
};
}();
};
// This set of controls performs orbiting, dollying (zooming), and panning. It maintains
// the "up" direction as +Y, unlike the TrackballControls. Touch on tablet and phones is
// supported.
//
// Orbit - left mouse / touch: one finger move
// Zoom - middle mouse, or mousewheel / touch: two finger spread or squish
// Pan - right mouse, or arrow keys / touch: three finter swipe
THREE.OrbitControls = function ( object, domElement ) {
var constraint = new OrbitConstraint( object );
this.domElement = ( domElement !== undefined ) ? domElement : document;
// API
Object.defineProperty( this, 'constraint', {
get: function() {
return constraint;
}
} );
this.getPolarAngle = function () {
return constraint.getPolarAngle();
};
this.getAzimuthalAngle = function () {
return constraint.getAzimuthalAngle();
};
// Set to false to disable this control
this.enabled = true;
// center is old, deprecated; use "target" instead
this.center = this.target;
// This option actually enables dollying in and out; left as "zoom" for
// backwards compatibility.
// Set to false to disable zooming
this.enableZoom = true;
this.zoomSpeed = 1.0;
// Set to false to disable rotating
this.enableRotate = true;
this.rotateSpeed = 1.0;
// Set to false to disable panning
this.enablePan = true;
this.keyPanSpeed = 7.0; // pixels moved per arrow key push
// Set to true to automatically rotate around the target
// If auto-rotate is enabled, you must call controls.update() in your animation loop
this.autoRotate = false;
this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
// Set to false to disable use of the keys
this.enableKeys = true;
// The four arrow keys
this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
// Mouse buttons
this.mouseButtons = { ORBIT: THREE.MOUSE.LEFT, ZOOM: THREE.MOUSE.MIDDLE, PAN: THREE.MOUSE.RIGHT };
////////////
// internals
var scope = this;
var rotateStart = new THREE.Vector2();
var rotateEnd = new THREE.Vector2();
var rotateDelta = new THREE.Vector2();
var panStart = new THREE.Vector2();
var panEnd = new THREE.Vector2();
var panDelta = new THREE.Vector2();
var dollyStart = new THREE.Vector2();
var dollyEnd = new THREE.Vector2();
var dollyDelta = new THREE.Vector2();
var STATE = { NONE : - 1, ROTATE : 0, DOLLY : 1, PAN : 2, TOUCH_ROTATE : 3, TOUCH_DOLLY : 4, TOUCH_PAN : 5 };
var state = STATE.NONE;
// for reset
this.target0 = this.target.clone();
this.position0 = this.object.position.clone();
this.zoom0 = this.object.zoom;
// events
var changeEvent = { type: 'change' };
var startEvent = { type: 'start' };
var endEvent = { type: 'end' };
// pass in x,y of change desired in pixel space,
// right and down are positive
function pan( deltaX, deltaY ) {
var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
constraint.pan( deltaX, deltaY, element.clientWidth, element.clientHeight );
}
this.update = function () {
if ( this.autoRotate && state === STATE.NONE ) {
constraint.rotateLeft( getAutoRotationAngle() );
}
if ( constraint.update() === true ) {
this.dispatchEvent( changeEvent );
}
};
this.reset = function () {
state = STATE.NONE;
this.target.copy( this.target0 );
this.object.position.copy( this.position0 );
this.object.zoom = this.zoom0;
this.object.updateProjectionMatrix();
this.dispatchEvent( changeEvent );
this.update();
};
function getAutoRotationAngle() {
return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
}
function getZoomScale() {
return Math.pow( 0.95, scope.zoomSpeed );
}
function onMouseDown( event ) {
if ( scope.enabled === false ) return;
event.preventDefault();
if ( event.button === scope.mouseButtons.ORBIT ) {
if ( scope.enableRotate === false ) return;
state = STATE.ROTATE;
rotateStart.set( event.clientX, event.clientY );
} else if ( event.button === scope.mouseButtons.ZOOM ) {
if ( scope.enableZoom === false ) return;
state = STATE.DOLLY;
dollyStart.set( event.clientX, event.clientY );
} else if ( event.button === scope.mouseButtons.PAN ) {
if ( scope.enablePan === false ) return;
state = STATE.PAN;
panStart.set( event.clientX, event.clientY );
}
if ( state !== STATE.NONE ) {
document.addEventListener( 'mousemove', onMouseMove, false );
document.addEventListener( 'mouseup', onMouseUp, false );
scope.dispatchEvent( startEvent );
}
}
function onMouseMove( event ) {
if ( scope.enabled === false ) return;
event.preventDefault();
var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
if ( state === STATE.ROTATE ) {
if ( scope.enableRotate === false ) return;
rotateEnd.set( event.clientX, event.clientY );
rotateDelta.subVectors( rotateEnd, rotateStart );
// rotating across whole screen goes 360 degrees around
constraint.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
// rotating up and down along whole screen attempts to go 360, but limited to 180
constraint.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
rotateStart.copy( rotateEnd );
} else if ( state === STATE.DOLLY ) {
if ( scope.enableZoom === false ) return;
dollyEnd.set( event.clientX, event.clientY );
dollyDelta.subVectors( dollyEnd, dollyStart );
if ( dollyDelta.y > 0 ) {
constraint.dollyIn( getZoomScale() );
} else if ( dollyDelta.y < 0 ) {
constraint.dollyOut( getZoomScale() );
}
dollyStart.copy( dollyEnd );
} else if ( state === STATE.PAN ) {
if ( scope.enablePan === false ) return;
panEnd.set( event.clientX, event.clientY );
panDelta.subVectors( panEnd, panStart );
pan( panDelta.x, panDelta.y );
panStart.copy( panEnd );
}
if ( state !== STATE.NONE ) scope.update();
}
function onMouseUp( /* event */ ) {
if ( scope.enabled === false ) return;
document.removeEventListener( 'mousemove', onMouseMove, false );
document.removeEventListener( 'mouseup', onMouseUp, false );
scope.dispatchEvent( endEvent );
state = STATE.NONE;
}
function onMouseWheel( event ) {
if ( scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE ) return;
event.preventDefault();
event.stopPropagation();
var delta = 0;
if ( event.wheelDelta !== undefined ) {
// WebKit / Opera / Explorer 9
delta = event.wheelDelta;
} else if ( event.detail !== undefined ) {
// Firefox
delta = - event.detail;
}
if ( delta > 0 ) {
constraint.dollyOut( getZoomScale() );
} else if ( delta < 0 ) {
constraint.dollyIn( getZoomScale() );
}
scope.update();
scope.dispatchEvent( startEvent );
scope.dispatchEvent( endEvent );
}
function onKeyDown( event ) {
if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
switch ( event.keyCode ) {
case scope.keys.UP:
pan( 0, scope.keyPanSpeed );
scope.update();
break;
case scope.keys.BOTTOM:
pan( 0, - scope.keyPanSpeed );
scope.update();
break;
case scope.keys.LEFT:
pan( scope.keyPanSpeed, 0 );
scope.update();
break;
case scope.keys.RIGHT:
pan( - scope.keyPanSpeed, 0 );
scope.update();
break;
}
}
function touchstart( event ) {
if ( scope.enabled === false ) return;
switch ( event.touches.length ) {
case 1: // one-fingered touch: rotate
if ( scope.enableRotate === false ) return;
state = STATE.TOUCH_ROTATE;
rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
break;
case 2: // two-fingered touch: dolly
if ( scope.enableZoom === false ) return;
state = STATE.TOUCH_DOLLY;
var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
var distance = Math.sqrt( dx * dx + dy * dy );
dollyStart.set( 0, distance );
break;
case 3: // three-fingered touch: pan
if ( scope.enablePan === false ) return;
state = STATE.TOUCH_PAN;
panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
break;
default:
state = STATE.NONE;
}
if ( state !== STATE.NONE ) scope.dispatchEvent( startEvent );
}
function touchmove( event ) {
if ( scope.enabled === false ) return;
event.preventDefault();
event.stopPropagation();
var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
switch ( event.touches.length ) {
case 1: // one-fingered touch: rotate
if ( scope.enableRotate === false ) return;
if ( state !== STATE.TOUCH_ROTATE ) return;
rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
rotateDelta.subVectors( rotateEnd, rotateStart );
// rotating across whole screen goes 360 degrees around
constraint.rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
// rotating up and down along whole screen attempts to go 360, but limited to 180
constraint.rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
rotateStart.copy( rotateEnd );
scope.update();
break;
case 2: // two-fingered touch: dolly
if ( scope.enableZoom === false ) return;
if ( state !== STATE.TOUCH_DOLLY ) return;
var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
var distance = Math.sqrt( dx * dx + dy * dy );
dollyEnd.set( 0, distance );
dollyDelta.subVectors( dollyEnd, dollyStart );
if ( dollyDelta.y > 0 ) {
constraint.dollyOut( getZoomScale() );
} else if ( dollyDelta.y < 0 ) {
constraint.dollyIn( getZoomScale() );
}
dollyStart.copy( dollyEnd );
scope.update();
break;
case 3: // three-fingered touch: pan
if ( scope.enablePan === false ) return;
if ( state !== STATE.TOUCH_PAN ) return;
panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
panDelta.subVectors( panEnd, panStart );
pan( panDelta.x, panDelta.y );
panStart.copy( panEnd );
scope.update();
break;
default:
state = STATE.NONE;
}
}
function touchend( /* event */ ) {
if ( scope.enabled === false ) return;
scope.dispatchEvent( endEvent );
state = STATE.NONE;
}
function contextmenu( event ) {
event.preventDefault();
}
this.dispose = function() {
this.domElement.removeEventListener( 'contextmenu', contextmenu, false );
this.domElement.removeEventListener( 'mousedown', onMouseDown, false );
this.domElement.removeEventListener( 'mousewheel', onMouseWheel, false );
this.domElement.removeEventListener( 'MozMousePixelScroll', onMouseWheel, false ); // firefox
this.domElement.removeEventListener( 'touchstart', touchstart, false );
this.domElement.removeEventListener( 'touchend', touchend, false );
this.domElement.removeEventListener( 'touchmove', touchmove, false );
document.removeEventListener( 'mousemove', onMouseMove, false );
document.removeEventListener( 'mouseup', onMouseUp, false );
window.removeEventListener( 'keydown', onKeyDown, false );
}
this.domElement.addEventListener( 'contextmenu', contextmenu, false );
this.domElement.addEventListener( 'mousedown', onMouseDown, false );
this.domElement.addEventListener( 'mousewheel', onMouseWheel, false );
this.domElement.addEventListener( 'MozMousePixelScroll', onMouseWheel, false ); // firefox
this.domElement.addEventListener( 'touchstart', touchstart, false );
this.domElement.addEventListener( 'touchend', touchend, false );
this.domElement.addEventListener( 'touchmove', touchmove, false );
window.addEventListener( 'keydown', onKeyDown, false );
// force an update at start
this.update();
};
THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );
THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;
Object.defineProperties( THREE.OrbitControls.prototype, {
object: {
get: function () {
return this.constraint.object;
}
},
target: {
get: function () {
return this.constraint.target;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: target is now immutable. Use target.set() instead.' );
this.constraint.target.copy( value );
}
},
minDistance : {
get: function () {
return this.constraint.minDistance;
},
set: function ( value ) {
this.constraint.minDistance = value;
}
},
maxDistance : {
get: function () {
return this.constraint.maxDistance;
},
set: function ( value ) {
this.constraint.maxDistance = value;
}
},
minZoom : {
get: function () {
return this.constraint.minZoom;
},
set: function ( value ) {
this.constraint.minZoom = value;
}
},
maxZoom : {
get: function () {
return this.constraint.maxZoom;
},
set: function ( value ) {
this.constraint.maxZoom = value;
}
},
minPolarAngle : {
get: function () {
return this.constraint.minPolarAngle;
},
set: function ( value ) {
this.constraint.minPolarAngle = value;
}
},
maxPolarAngle : {
get: function () {
return this.constraint.maxPolarAngle;
},
set: function ( value ) {
this.constraint.maxPolarAngle = value;
}
},
minAzimuthAngle : {
get: function () {
return this.constraint.minAzimuthAngle;
},
set: function ( value ) {
this.constraint.minAzimuthAngle = value;
}
},
maxAzimuthAngle : {
get: function () {
return this.constraint.maxAzimuthAngle;
},
set: function ( value ) {
this.constraint.maxAzimuthAngle = value;
}
},
enableDamping : {
get: function () {
return this.constraint.enableDamping;
},
set: function ( value ) {
this.constraint.enableDamping = value;
}
},
dampingFactor : {
get: function () {
return this.constraint.dampingFactor;
},
set: function ( value ) {
this.constraint.dampingFactor = value;
}
},
// backward compatibility
noZoom: {
get: function () {
console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );
return ! this.enableZoom;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );
this.enableZoom = ! value;
}
},
noRotate: {
get: function () {
console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );
return ! this.enableRotate;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );
this.enableRotate = ! value;
}
},
noPan: {
get: function () {
console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );
return ! this.enablePan;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );
this.enablePan = ! value;
}
},
noKeys: {
get: function () {
console.warn( 'THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead.' );
return ! this.enableKeys;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead.' );
this.enableKeys = ! value;
}
},
staticMoving : {
get: function () {
console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );
return ! this.constraint.enableDamping;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead.' );
this.constraint.enableDamping = ! value;
}
},
dynamicDampingFactor : {
get: function () {
console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );
return this.constraint.dampingFactor;
},
set: function ( value ) {
console.warn( 'THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead.' );
this.constraint.dampingFactor = value;
}
}
} );
}() );

Find the place of a cursor in rectangle

I don't know how to find the place part (one of 4 triangles) of a cursor in a rectangle.
This image is more efficient than my explication :s
Im in javascript (so the rectangle is a DIV, 0,0 placed)
I have those varaibles :
var cursor_x = e.clientX + $(document).scrollLeft()
var cursor_y = e.clientY + $(document).scrollTop()
var rect_w = $( rectangle ).width()
var rect_h = $( rectangle ).height()
I just want to know mathematically where is the cursor, in the triangle 1, 2, 3 or 4
What I think is the easiest way is to first normalize y so the computation is the same as for a square and then check for on which side of the diagonals you are...
var ynorm = y * w / h;
var s1 = x > ynorm ? 0 : 1;
var s2 = (w - x) > ynorm ? 0 : 1;
var area = s1*2 + s2;
the final area variable is a number between 0 and 3 telling in which of the four parts you are.
#6502: Thk you, its very helpful.
For more info, im working on an experimental light sortable jquery plugin, that can work with floating placement (top, left, right, bottom)
the code :
simply use $( ..selector.. ).sortable({ items: ..selector.. })
-
$.fn.sortable = function( o ) {
o.self = this;
o.helper = null;
$(document).bind('mouseup.sortable', function(e) {
if( o.sortable ) {
o.sortable.css({ opacity: ''});
if( o.target ) {
if( o.area == 's' ) {
o.sortable.css({ float: '' })
}
else if( o.area == 'n' ) {
o.sortable.css({ float: '' })
o.target.css({ float: '' })
}
else if( o.area == 'w' ) {
o.target.css({ float: 'left' })
o.sortable.css({ float: 'left' })
}
else if( o.area == 'e' ) {
o.target.css({ float: 'left' })
o.sortable.css({ float: 'left' })
}
o.target[ o.area == 's' || o.area == 'e' ? 'before':'after']( o.sortable );
o.target[0].style.setProperty( 'cursor', false , false);
o.target = null;
}
o.helper.remove();
o.sortable = null;
}
}).bind('mousemove.sortable', function(e) {
if( o.sortable ) {
o.ex = e.clientX + $(document).scrollLeft() + 10
o.ey = e.clientY + $(document).scrollTop() - o.sortable[0]._height - 10
o.helper.css({ left: o.ex, top: o.ey });
}
});
return $( this.selector ).delegate( o.items, 'mousemove.sortable', function(e) {
if( o.sortable && o.sortable[0] != this ) {
var self = $(this)
var x = e.clientX + $(document).scrollLeft() - self.offset().left
var y = e.clientY + $(document).scrollTop() - self.offset().top
var w = self.width()
var h = self.height()
var ynorm = y * w / h;
o.area = (w - x) > ynorm ? ( x > ynorm ? 's':'e' ) : ( x > ynorm ? 'w':'n' );
this.style.setProperty( 'cursor', o.area+'-resize', 'important');
o.target = self;
}
}).delegate( o.items, 'mousedown.sortable', function( e ) {
o.sortable = $(this).css({ opacity: 0.4 });
this._width = o.sortable.width();
this._height = o.sortable.height();
o.helper = o.sortable.clone().css({ position: 'absolute', left: -99999, top: 0 })
$('body').append( o.helper )
return false;
});
}

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