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136 lines
2.9 KiB
136 lines
2.9 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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[page:EventDispatcher] →
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<h1>[name]</h1>
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<p class="desc">
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This class can be used to provide a drag'n'drop interaction.
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</p>
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<h2>Code Example</h2>
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<code>
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const controls = new DragControls( objects, camera, renderer.domElement );
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// add event listener to highlight dragged objects
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controls.addEventListener( 'dragstart', function ( event ) {
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event.object.material.emissive.set( 0xaaaaaa );
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} );
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controls.addEventListener( 'dragend', function ( event ) {
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event.object.material.emissive.set( 0x000000 );
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} );
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</code>
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<h2>Examples</h2>
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<p>[example:misc_controls_drag misc / controls / drag ]</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:Array objects], [param:Camera camera], [param:HTMLDOMElement domElement] )</h3>
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<p>
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<p>
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[page:Array objects]: An array of draggable 3D objects.
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</p>
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<p>
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[page:Camera camera]: The camera of the rendered scene.
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</p>
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<p>
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[page:HTMLDOMElement domElement]: The HTML element used for event listeners.
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</p>
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<p>
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Creates a new instance of [name].
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</p>
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</p>
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<h2>Events</h2>
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<h3>dragstart</h3>
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<p>
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Fires when the user starts to drag a 3D object.
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</p>
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<h3>drag</h3>
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<p>
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Fires when the user drags a 3D object.
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</p>
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<h3>dragend</h3>
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<p>
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Fires when the user has finished dragging a 3D object.
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</p>
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<h3>hoveron</h3>
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<p>
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Fires when the pointer is moved onto a 3D object, or onto one of its children.
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</p>
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<h3>hoveroff</h3>
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<p>
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Fires when the pointer is moved out of a 3D object.
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</p>
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<h2>Properties</h2>
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<h3>[property:Boolean enabled]</h3>
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<p>
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Whether or not the controls are enabled.
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</p>
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<h3>[property:Boolean transformGroup]</h3>
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<p>
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This option only works if the [page:DragControls.objects] array contains a single draggable group object.
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If set to `true`, [name] does not transform individual objects but the entire group. Default is `false`.
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</p>
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<h2>Methods</h2>
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<p>See the base [page:EventDispatcher] class for common methods.</p>
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<h3>[method:undefined activate] ()</h3>
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<p>
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Adds the event listeners of the controls.
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</p>
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<h3>[method:undefined deactivate] ()</h3>
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<p>
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Removes the event listeners of the controls.
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</p>
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<h3>[method:undefined dispose] ()</h3>
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<p>
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Should be called if the controls is no longer required.
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</p>
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<h3>[method:Array getObjects] ()</h3>
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<p>
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Returns the array of draggable objects.
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</p>
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<h3>[method:Raycaster getRaycaster] ()</h3>
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<p>
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Returns the internal [page:Raycaster] instance that is used for intersection tests.
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</p>
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<h2>Source</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/controls/DragControls.js examples/jsm/controls/DragControls.js]
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</p>
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</body>
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</html>
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