egret-docs-master/Engine3D/events/keyboardEvent

KeyEvent3D

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• 演示准备

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创建一个演示场景：
class Main {

    protected _egret3DCanvas: egret3d.Egret3DCanvas;
    protected view1: egret3d.View3D;
    protected cube: egret3d.Mesh;

    public constructor() {

        ///创建3DCanvas
        this._egret3DCanvas = new egret3d.Egret3DCanvas();
        this._egret3DCanvas.x = 0;
        this._egret3DCanvas.y = 0;
        this._egret3DCanvas.width = window.innerWidth;
        this._egret3DCanvas.height = window.innerHeight;
        this._egret3DCanvas.start();
        ///创建View3D
        this.view1 = new egret3d.View3D(0, 0, window.innerWidth, window.innerHeight);
        this.view1.camera3D.lookAt(new egret3d.Vector3D(0, 1000, -1000), new egret3d.Vector3D(0, 0, 0));
        this.view1.backColor = 0xff888888;
        this._egret3DCanvas.addView3D(this.view1);
        ///启动3DCanvas
        this._egret3DCanvas.start();
        ///创建立方体，放置于场景内(0,0,0)位置
        var mat_cube: egret3d.TextureMaterial = new egret3d.TextureMaterial();
        var geometery_Cube: egret3d.CubeGeometry = new egret3d.CubeGeometry();
        this.cube = new egret3d.Mesh(geometery_Cube, mat_cube);
        this.view1.addChild3D(this.cube);
        ///创建面片，放置于场景内(0,0,0)位置
        var mat_Plane: egret3d.TextureMaterial = new egret3d.TextureMaterial();
        var geometery_Plane: egret3d.PlaneGeometry = new egret3d.PlaneGeometry();
        var plane = new egret3d.Mesh(geometery_Plane, mat_Plane);
        this.view1.addChild3D(plane);

    }

}  

1) 在egret3d.KeyCode内引擎定义了所有Key的枚举类型，详细可以参考引擎内的枚举值。
2) 按键事件分别为：KEY_DOWN 按键每次按下时响应和KEY_UP 按键每次回弹时响应。
3) 示例代码：
		
		class Main {
		
		    protected _egret3DCanvas: egret3d.Egret3DCanvas;
		    protected view1: egret3d.View3D;
		    protected cube: egret3d.Mesh;
		
		    public constructor() {
		
		        ///创建3DCanvas
		        this._egret3DCanvas = new egret3d.Egret3DCanvas();
		        this._egret3DCanvas.x = 0;
		        this._egret3DCanvas.y = 0;
		        this._egret3DCanvas.width = window.innerWidth;
		        this._egret3DCanvas.height = window.innerHeight;
		        this._egret3DCanvas.start();
		        ///创建View3D
		        this.view1 = new egret3d.View3D(0, 0, window.innerWidth, window.innerHeight);
		        this.view1.camera3D.lookAt(new egret3d.Vector3D(0, 1000, -1000), new egret3d.Vector3D(0, 0, 0));
		        this.view1.backColor = 0xff888888;
		        this._egret3DCanvas.addView3D(this.view1);
		        ///启动3DCanvas，注册每帧更新事件
		        this._egret3DCanvas.start();
		        ///创建立方体，放置于场景内(0,0,0)位置
		        var mat_cube: egret3d.TextureMaterial = new egret3d.TextureMaterial();
		        var geometery_Cube: egret3d.CubeGeometry = new egret3d.CubeGeometry();
		        this.cube = new egret3d.Mesh(geometery_Cube, mat_cube);
		        this.view1.addChild3D(this.cube);
		        ///创建面片，放置于场景内(0,0,0)位置
		        var mat_Plane: egret3d.TextureMaterial = new egret3d.TextureMaterial();
		        var geometery_Plane: egret3d.PlaneGeometry = new egret3d.PlaneGeometry();
		        var plane = new egret3d.Mesh(geometery_Plane, mat_Plane);
		        this.view1.addChild3D(plane);
		        ///注册事件，需要依次写入事件标识符，注册方法和注册对象。
		        egret3d.Input.addEventListener(egret3d.KeyEvent3D.KEY_DOWN, this.OnKeyDown, this);
		        egret3d.Input.addEventListener(egret3d.KeyEvent3D.KEY_UP, this.OnKeyUp, this);
		    }
		
		    ///按键按下事件响应,其中e: egret3d.KeyEvent3D会作为参数传递给响应事件。
		    public OnKeyDown(e: egret3d.KeyEvent3D) {
		        ///e.keyCode保存了触发该次事件的按键枚举值，通过转换成字符串可以输出。
		        var code = egret3d.KeyCode[e.keyCode];
		        console.log("OnKeyDown=>" + code);
		    }
		    ///按键弹回事件响应,其中e: egret3d.KeyEvent3D会作为参数传递给响应事件。
		    public OnKeyUp(e: egret3d.KeyEvent3D) {
		         ///e.keyCode保存了触发该次事件的按键枚举值，通过转换成字符串可以输出。
		        var code = egret3d.KeyCode[e.keyCode];
		        console.log("OnKeyUp=>" + code);
		    }
		}