69 lines
2.2 KiB
JavaScript
69 lines
2.2 KiB
JavaScript
/** @namespace */
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var THREEx = THREEx || {};
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THREEx.DragPanControls = function(object, domElement)
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{
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this._object = object;
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this._domElement= domElement || document;
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// parameters that you can change after initialisation
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this.target = new THREE.Vector3(0, 0, 0);
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this.speedX = 0.03;
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this.speedY = 0.03;
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this.rangeX = -40;
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this.rangeY = +40;
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// private variables
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this._mouseX = 0;
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this._mouseY = 0;
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var _this = this;
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this._$onMouseMove = function(){ _this._onMouseMove.apply(_this, arguments); };
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this._$onTouchStart = function(){ _this._onTouchStart.apply(_this, arguments); };
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this._$onTouchMove = function(){ _this._onTouchMove.apply(_this, arguments); };
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this._domElement.addEventListener( 'mousemove', this._$onMouseMove, false );
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this._domElement.addEventListener( 'touchstart', this._$onTouchStart,false );
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this._domElement.addEventListener( 'touchmove', this._$onTouchMove, false );
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}
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THREEx.DragPanControls.prototype.destroy = function()
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{
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this._domElement.removeEventListener( 'mousemove', this._$onMouseMove, false );
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this._domElement.removeEventListener( 'touchstart', this._$onTouchStart,false );
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this._domElement.removeEventListener( 'touchmove', this._$onTouchMove, false );
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}
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THREEx.DragPanControls.prototype.update = function(event)
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{
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this._object.position.x += ( this._mouseX * this.rangeX - this._object.position.x ) * this.speedX;
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this._object.position.y += ( this._mouseY * this.rangeY - this._object.position.y ) * this.speedY;
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this._object.lookAt( this.target );
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}
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THREEx.DragPanControls.prototype._onMouseMove = function(event)
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{
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this._mouseX = ( event.clientX / window.innerWidth ) - 0.5;
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this._mouseY = ( event.clientY / window.innerHeight) - 0.5;
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}
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THREEx.DragPanControls.prototype._onTouchStart = function(event)
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{
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if( event.touches.length != 1 ) return;
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// no preventDefault to get click event on ios
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this._mouseX = ( event.touches[ 0 ].pageX / window.innerWidth ) - 0.5;
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this._mouseY = ( event.touches[ 0 ].pageY / window.innerHeight) - 0.5;
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}
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THREEx.DragPanControls.prototype._onTouchMove = function(event)
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{
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if( event.touches.length != 1 ) return;
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event.preventDefault();
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this._mouseX = ( event.touches[ 0 ].pageX / window.innerWidth ) - 0.5;
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this._mouseY = ( event.touches[ 0 ].pageY / window.innerHeight) - 0.5;
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}
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