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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="utf-8" />
- <base href="../../../" />
- <script src="page.js"></script>
- <link type="text/css" rel="stylesheet" href="page.css" />
- </head>
- <body>
- [page:Controls] →
- <h1>[name]</h1>
- <p class="desc">
- Arcball controls allow the camera to be controlled by a virtual trackball with full touch support and advanced navigation functionality. <br>
- Cursor/finger positions and movements are mapped over a virtual trackball surface
- represented by a gizmo and mapped in intuitive and consistent camera movements.
- Dragging cursor/fingers will cause camera to orbit around the center of the trackball in a conservative way (returning to the starting point
- will make the camera to return to its starting orientation).<br><br>
- In addition to supporting pan, zoom and pinch gestures, Arcball controls provide <i>focus</i> functionality with a double click/tap for
- intuitively moving the object's point of interest in the center of the virtual trackball.
- Focus allows a much better inspection and navigation in complex environment.
- Moreover Arcball controls allow FOV manipulation (in a vertigo-style method) and z-rotation.
- Saving and restoring of Camera State is supported also through clipboard
- (use ctrl+c and ctrl+v shortcuts for copy and paste the state).<br><br>
- Unlike [page:OrbitControls] and [page:TrackballControls], [name] doesn't require [page:.update] to be called externally in an animation loop when animations
- are on.<br><br>
- To use this, as with all files in the /examples directory, you will have to
- include the file separately in your HTML.
- </p>
- <h2>Import</h2>
- <p>
- [name] is an add-on, and must be imported explicitly.
- See [link:#manual/introduction/Installation Installation / Addons].
- </p>
- <code>
- import { ArcballControls } from 'three/addons/controls/ArcballControls.js';
- </code>
- <h2>Code Example</h2>
- <code>
- const renderer = new THREE.WebGLRenderer();
- renderer.setSize( window.innerWidth, window.innerHeight );
- document.body.appendChild( renderer.domElement );
- const scene = new THREE.Scene();
- const camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
- const controls = new ArcballControls( camera, renderer.domElement, scene );
- controls.addEventListener( 'change', function () {
- renderer.render( scene, camera );
- } );
- //controls.update() must be called after any manual changes to the camera's transform
- camera.position.set( 0, 20, 100 );
- controls.update();
- </code>
- <h2>Examples</h2>
- <p>[example:misc_controls_arcball misc / controls / arcball ]</p>
- <h2>Constructor</h2>
- <h3>[name]( [param:Camera camera], [param:HTMLDOMElement domElement], [param:Scene scene] )</h3>
- <p>
- [page:Camera camera]: (required) The camera to be controlled. The camera must not be a child of another object, unless that object is the scene itself.<br><br>
- [page:HTMLDOMElement domElement]: The HTML element used for event listeners. (optional)<br><br>
- [page:Scene scene]: The scene rendered by the camera. If not given, gizmos cannot be shown. (optional)
- </p>
- <h2>Events</h2>
- <h3>change</h3>
- <p>
- Fires when the camera has been transformed by the controls.
- </p>
- <h3>start</h3>
- <p>
- Fires when an interaction was initiated.
- </p>
- <h3>end</h3>
- <p>
- Fires when an interaction has finished.
- </p>
- <h2>Properties</h2>
- <p>See the base [page:Controls] class for common properties.</p>
- <h3>[property:Boolean adjustNearFar]</h3>
- <p>
- If true, camera's near and far values will be adjusted every time zoom is performed trying to mantain the same visible portion
- given by initial near and far values ( [page:PerspectiveCamera] only ).
- Default is false.
- </p>
- <h3>[property:Camera camera]</h3>
- <p>
- The camera being controlled.
- </p>
- <h3>[property:Boolean cursorZoom]</h3>
- <p>
- Set to true to make zoom become cursor centered.
- </p>
- <h3>
- [property:Float dampingFactor]</h3>
- <p>
- The damping inertia used if [page:.enableAnimations] is set to true.
- </p>
- <h3>[property:Boolean enableAnimations]</h3>
- <p>
- Set to true to enable animations for rotation (damping) and focus operation. Default is true.
- </p>
- <h3>[property:Boolean enableGrid]</h3>
- <p>
- When set to true, a grid will appear when panning operation is being performed (desktop interaction only). Default is false.
- </p>
- <h3>[property:Boolean enablePan]</h3>
- <p>
- Enable or disable camera panning. Default is true.
- </p>
- <h3>[property:Boolean enableRotate]</h3>
- <p>
- Enable or disable camera rotation. Default is true.
- </p>
- <h3>[property:Boolean enableZoom]</h3>
- <p>
- Enable or disable zooming of the camera.
- </p>
- <h3>[property:Float focusAnimationTime]</h3>
- <p>
- Duration time of focus animation.
- </p>
- <h3>[property:Float maxDistance]</h3>
- <p>
- How far you can dolly out ( [page:PerspectiveCamera] only ). Default is Infinity.
- </p>
- <h3>[property:Float maxZoom]</h3>
- <p>
- How far you can zoom out ( [page:OrthographicCamera] only ). Default is Infinity.
- </p>
- <h3>[property:Float minDistance]</h3>
- <p>
- How far you can dolly in ( [page:PerspectiveCamera] only ). Default is 0.
- </p>
- <h3>[property:Float minZoom]</h3>
- <p>
- How far you can zoom in ( [page:OrthographicCamera] only ). Default is 0.
- </p>
- <h3>[property:Float radiusFactor]</h3>
- <p>
- The size of the gizmo relative to the screen width and height. Default is 0.67.
- </p>
- <h3>[property:Float rotateSpeed]</h3>
- <p>
- Speed of rotation. Default is 1.
- </p>
- <h3>[property:Float scaleFactor]</h3>
- <p>
- The scaling factor used when performing zoom operation.
- </p>
- <h3>[property:Scene scene]</h3>
- <p>
- The scene rendered by the camera.
- </p>
- <h3>[property:Float wMax]</h3>
- <p>
- Maximum angular velocity allowed on rotation animation start.
- </p>
- <h2>Methods</h2>
- <p>See the base [page:Controls] class for common methods.</p>
- <h3>[method:undefined activateGizmos] ( [param:Boolean isActive] )</h3>
- <p>
- Make gizmos more or less visible.
- </p>
- <h3>[method:undefined copyState] ()</h3>
- <p>
- Copy the current state to clipboard (as a readable JSON text).
- </p>
- <h3>[method:undefined pasteState] ()</h3>
- <p>
- Set the controls state from the clipboard, assumes that the clipboard stores a JSON text as saved from [page:.copyState].
- </p>
- <h3>[method:undefined reset] ()</h3>
- <p>
- Reset the controls to their state from either the last time the [page:.saveState] was called, or the initial state.
- </p>
- <h3>[method:undefined saveState] ()</h3>
- <p>
- Save the current state of the controls. This can later be recovered with [page:.reset].
- </p>
- <h3>[method:undefined setCamera] ( [param:Camera camera] )</h3>
- <p>
- Set the camera to be controlled. Must be called in order to set a new camera to be controlled.
- </p>
- <h3>[method:undefined setGizmosVisible] ( [param:Boolean value] )</h3>
- <p>
- Set the visible property of gizmos.
- </p>
- <h3>[method:undefined setTbRadius] ( [param:Float value] )</h3>
- <p>
- Update the `radiusFactor` value, redraw the gizmo and send a `changeEvent` to visualise the changes.
- </p>
- <h3>[method:Boolean setMouseAction] ( [param:String operation], mouse, key )</h3>
- <p>
- Set a new mouse action by specifying the operation to be performed and a mouse/key combination. In case of conflict, replaces the existing one.<br><br>
- Operations can be specified as 'ROTATE', 'PAN', 'FOV' or 'ZOOM'.<br>
- Mouse inputs can be specified as mouse buttons 0, 1 and 2 or 'WHEEL' for wheel notches.<br>
- Keyboard modifiers can be specified as 'CTRL', 'SHIFT' or null if not needed.
- </p>
- <h3>[method:Boolean unsetMouseAction] ( mouse, key )</h3>
- <p>
- Removes a mouse action by specifying its mouse/key combination.<br><br>
- Mouse inputs can be specified as mouse buttons 0, 1 and 2 or 'WHEEL' for wheel notches.<br>
- Keyboard modifiers can be specified as 'CTRL', 'SHIFT' or null if not needed.
- </p>
- <h3>[method:Raycaster getRaycaster] ()</h3>
- <p>
- Returns the [page:Raycaster] object that is used for user interaction. This object is shared between all instances of
- ArcballControls. If you set the [page:Object3D.layers .layers] property of the [name], you will also want to
- set the [page:Raycaster.layers .layers] property on the [page:Raycaster] with a matching value, or else the [name]
- won't work as expected.
- </p>
- <h2>Source</h2>
- <p>
- [link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/controls/ArcballControls.js examples/jsm/controls/ArcballControls.js]
- </p>
- </body>
- </html>
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