{"id":601,"date":"2016-09-29T14:28:57","date_gmt":"2016-09-29T06:28:57","guid":{"rendered":"http:\/\/39.100.100.179\/?p=601"},"modified":"2016-10-11T09:26:59","modified_gmt":"2016-10-11T01:26:59","slug":"%e4%bb%bfmagic-touch%e4%b8%ad%e7%9a%84%e6%89%8b%e5%86%99%e8%af%86%e5%88%ab%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.u3d8.com\/?p=601","title":{"rendered":"\u4effMagic Touch\u4e2d\u7684\u624b\u5199\u8bc6\u522b\u7b97\u6cd5"},"content":{"rendered":"

\u8f6c\u81ea\uff1ahttp:\/\/www.ashan.org\/archives\/685<\/a>\u00a0 \u00a0 \u00a0\u53ef\u4ee5\u53c2\u8003\u4f8b\u5b50\uff1ahttp:\/\/edn.egret.com\/cn\/article\/index\/id\/709<\/a><\/p>\n

\"\u4effMagic<\/a><\/p>\n

\u8fd9\u4e2a\u7b97\u6cd5\u662f\u6211\u5728\u4f20\u5a92\u5927\u5b66\u6388\u8bfe\u65f6\u5019\u7ed9\u5b66\u751f\u4eec\u8bb2\u8fc7\u7684\u4e00\u79cd\u8bc6\u522b\u7b97\u6cd5\u3002\u7531\u4e8e\u5b83\u7684\u539f\u7406\u975e\u5e38\u7b80\u5355\uff0c\u8ba1\u7b97\u4e5f\u5e76\u4e0d\u590d\u6742\u975e\u5e38\u9002\u5408\u5b66\u4e60\u7ec3\u624b\u3002\u4e0e\u6b64\u540c\u65f6\uff0c\u5728\u7ec8\u7aef\u624b\u5199\u8bc6\u522b\u7b97\u6cd5\u4e2d\uff0c\u6211\u6240\u8bb2\u89e3\u7684\u7b97\u6cd5\u5728\u8ba1\u7b97\u4e0a\u4e5f\u975e\u5e38\u8282\u7ea6\u6027\u80fd\uff0c\u4f46\u8bc6\u522b\u7cbe\u5ea6\u5374\u4e0d\u662f\u5f88\u9ad8\u3002<\/p>\n

\u7531\u4e8e\u662f\u6e38\u620f\u4e2d\u4f7f\u7528\uff0c\u5176\u5b9e\u6211\u4eec\u4e0d\u9700\u8981\u5bf9\u590d\u6742\u7684\u6c49\u5b57\uff0c\u6216\u8005\u6587\u5b57\u5b57\u7b26\u8fdb\u884c\u8bc6\u522b\uff0c\u6709\u7684\u4ec5\u4ec5\u662f\u975e\u5e38\u7b80\u5355\u7684\u7b26\u53f7\u3002\u4e0b\u56fe\u4e2d\u6240\u793a\u7684\u7b26\u53f7\uff0c\u5219\u662f\u6e38\u620f\u4e2d\u51fa\u73b0\u7684\u4e00\u4e9b\u5e38\u89c1\u7b26\u53f7\u3002<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u57fa\u672c\u7684\u7b26\u53f7\u603b\u7ed3\u4e3a\u201c|\u2014V^ZC\u201d\u7b49\u3002\u8fd9\u5bf9\u4e8e\u6211\u4eec\u5b66\u4e60\u624b\u5199\u8bc6\u522b\u7684\u7b97\u6cd5\u8bd5\u9a8c\u4e5f\u66f4\u52a0\u7b80\u5355\u4e00\u4e9b\u3002\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u5177\u4f53\u7684\u5b9e\u73b0\u601d\u8def\u4e0e\u65b9\u6cd5\uff08\u5b9e\u4f8b\u4e2d\u7684\u4ee3\u7801\u91c7\u7528Egret\u7f16\u5199\uff09\u3002<\/p>\n

\u7b2c\u4e00\u6b65\uff1a\u8bbe\u7f6e\u4e00\u4e2a\u516b\u65b9\u5411\u5750\u6807<\/p>\n

\"\u4effMagic<\/a><\/p>\n

\u7b2c\u4e8c\u6b65\uff1a\u5c06\u516b\u4e2a\u98ce\u5411\u5e73\u5747\u5206\u4e3a\u516b\u4e2a\u533a\u57df
\n\"\u4effMagic<\/p>\n

\u7b2c\u4e09\u6b65\uff1a\u5c06\u516b\u4e2a\u533a\u57df\u8fdb\u884c\u7f16\u53f7<\/p>\n

\"\u4effMagic<\/a><\/p>\n

\u7b2c\u56db\u6b65\uff1a\u5bf9\u5e94\u6bcf\u4e2a\u7f16\u53f7\uff0c\u8ba1\u7b97\u51fa\u5b83\u7684\u65cb\u8f6c\u89d2\u5ea6\u8303\u56f4<\/p>\n

\"\u4effMagic<\/a><\/p>\n

\u7b2c\u4e94\u6b65\uff1a\u91c7\u96c6\u7528\u6237\u5bf9\u4e8e\u5c4f\u5e55\u89e6\u6478\u65f6\u5019\u7684\u6570\u636e<\/p>\n

\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

\/\/\u6ce8\u518c\u4fa6\u542c\r\negret.MainContext.instance.stage.addEventListener(egret.TouchEvent.TOUCH_BEGIN,this.mouseDown,this);\r\negret.MainContext.instance.stage.addEventListener(egret.TouchEvent.TOUCH_END,this.mouseUp,this);\r\negret.MainContext.instance.stage.addEventListener(egret.TouchEvent.TOUCH_MOVE,this.mouseMove,this);\r\n\r\n\/\/\u54cd\u5e94\u51fd\u6570\r\nprivate mouseDown(evt:egret.TouchEvent)\r\n{\r\n    this._layer.graphics.clear();\r\n    this._mouseDatas = [];\r\n    var p:egret.Point = new egret.Point(evt.stageX,evt.stageY);\r\n    this._mouseDatas.push(p);\r\n    this._currentPoint = p;\r\n}\r\nprivate mouseMove(evt:egret.TouchEvent)\r\n{\r\n    var p:egret.Point = new egret.Point(evt.stageX,evt.stageY);\r\n    this._mouseDatas.push(p);\r\n    this._layer.graphics.lineStyle(5,0) ;\r\n    this._layer.graphics.moveTo(this._currentPoint.x,this._currentPoint.y);\r\n    this._layer.graphics.lineTo(p.x,p.y);\r\n    this._layer.graphics.endFill();\r\n    this._currentPoint = p;\r\n}\r\nprivate mouseUp(evt:egret.TouchEvent)\r\n{\r\n    var p:egret.Point = new egret.Point(evt.stageX,evt.stageY);\r\n    this._mouseDatas.push(p);\r\n    this._layer.graphics.clear();\r\n    this.motion();\r\n}<\/pre>\n
\u7b2c\u516d\u6b65\uff1a\u6570\u636e\u964d\u566a\u64cd\u4f5c<\/p>\n
\u6211\u4eec\u770b\u5230\uff0c\u4e0d\u540c\u7684\u624b\u673a\u5c4f\u5e55\u54cd\u5e94\u548c\u6e38\u620fFPS\u90fd\u4f1a\u5f71\u54cd\u5230\u6211\u4eec\u91c7\u6837\u7684\u6570\u636e\u3002\u73b0\u5728\u6211\u4eec\u62e5\u6709\u4e86\u5f88\u591a\u5750\u6807\u70b9\u4fe1\u606f\uff0c\u8fd9\u4e9b\u5750\u6807\u70b9\u90fd\u662f\u7528\u6237\u624b\u6307\u5212\u8fc7\u7684\u5730\u65b9\u3002\u6211\u4eec\u9700\u8981\u5bf9\u4e00\u4e9b\u8f83\u4e3a\u5bc6\u96c6\u7684\u70b9\u8fdb\u884c\u964d\u566a\u64cd\u4f5c\u3002\u5177\u4f53\u7684\u6570\u503c\u9700\u8981\u8fdb\u884c\u53cd\u590d\u8bd5\u9a8c\u3002\u6211\u8fd9\u91cc\u5c06\u4e24\u4e2a\u91c7\u6837\u6570\u636e\u70b9\u7684\u95f4\u8ddd\u8bbe\u7f6e\u4e3a\u5927\u4e8e30px\u3002<\/p>\n
private motion()\r\n{\r\n    var _arr:egret.Point[] = [];\r\n    var currentIndex:number = 0;\r\n    var len:number = this._mouseDatas.length;\r\n    _arr.push(this._mouseDatas[currentIndex]);\r\n    for(var i:number=0; i<len; i++)\r\n    {\r\n        if( egret.Point.distance(this._mouseDatas[currentIndex], this._mouseDatas[i])>30 )\r\n        {\r\n            currentIndex = i;\r\n            _arr.push(this._mouseDatas[currentIndex]);\r\n        }\r\n    }\r\n    this._mouseDatas = _arr;\r\n    this.parseDirection();\r\n}<\/pre>\n
\u7b2c\u4e03\u6b65\uff1a\u5c06\u91c7\u6837\u6570\u636e\u8f6c\u6362\u4e3a\u65b9\u5411\u5e8f\u5217<\/p>\n
\u4e24\u4e2a\u70b9\u7ec3\u6210\u4e00\u6761\u7ebf\u6bb5\u80af\u5b9a\u4f1a\u6709\u65b9\u5411\uff0c\u4e5f\u4f1a\u6709\u89d2\u5ea6\u3002\u5728\u7b2c\u56db\u6b65\u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u8ba1\u7b97\u51fa\u6bcf\u4e2a\u89d2\u5ea6\u8303\u56f4\u5185\u6240\u4ee3\u8868\u7684\u65b9\u5411\u7f16\u53f7\u3002\u73b0\u5728\u6211\u4eec\u9700\u8981\u5c06\u8fd9\u4e2a\u65b9\u5411\u7f16\u53f7\u5e8f\u5217\u8ba1\u7b97\u51fa\u6765<\/p>\n
private parseDirection()\r\n{\r\n    this._dirsArr = [];\r\n    var len:number = this._mouseDatas.length;\r\n    for(var i:number=0; i<len; i++)\r\n    {\r\n        if( this._mouseDatas[i+1])\r\n        {\r\n            var p1:egret.Point = this._mouseDatas[i];\r\n            var p2:egret.Point = this._mouseDatas[i+1];\r\n            var a:number = p1.y - p2.y;\r\n            var b:number = egret.Point.distance(p1,p2);\r\n            var rad:number = Math.asin( a\/b );\r\n            var ang:number = rad * 57.2957800; \/\/ rad * 180\/Math.PI \u76f4\u63a5\u6c42\u5e38\u91cf\uff0c\u4f18\u5316\r\n            var quad:number = this.quadrant(p1,p2);\r\n            var dir:number = this.getDirByAngQuad(ang, quad);\r\n            this._dirsArr.push(dir);\r\n        }\r\n    }\r\n}\r\n\/*\r\n    \u6839\u636e\u6240\u5728\u8c61\u9650\u4e0e\u89d2\u5ea6\u8ba1\u7b97\u51fa\u65b9\u5411\u7f16\u53f7\u3002\r\n    \u65b9\u5411\u7f16\u53f7\uff0c\u4ee5\u7b2c\u4e00\u8c61\u96500\u5ea6\u4e3a\u57fa\u7840\uff0c\u6309\u7167\u987a\u65f6\u9488\u65b9\u5411\uff0c\u5c06\u5706\u7b49\u5206\u4e3a8\u4efd\u3002\r\n     *\/\r\n    private getDirByAngQuad(ang:number,quad:number):number\r\n    {\r\n        switch(quad)\r\n        {\r\n            case 1:\r\n                if( ang<=22.5 && ang>= 0 )\r\n                {\r\n                    return 1;\r\n                }\r\n                else if( ang<= 67.5 && ang> 22.5 )\r\n                {\r\n                    return 8;\r\n                }\r\n                else\r\n                {\r\n                    return 7;\r\n                }\r\n                break;\r\n            case 2:\r\n                if( ang<=22.5 && ang>=0 )\r\n                {\r\n                    return 5;\r\n                }\r\n                else if( ang<= 67.5 && ang> 22.5 )\r\n                {\r\n                    return 6;\r\n                }\r\n                else\r\n                {\r\n                    return 7;\r\n                }\r\n                break;\r\n            case 3:\r\n                if( ang<= -67.5 && ang>= -90 )\r\n                {\r\n                    return 3;\r\n                }\r\n                else if( ang<=-22.5 && ang> -67.5 )\r\n                {\r\n                    return 4;\r\n                }\r\n                else{\r\n                    return 5;\r\n                }\r\n                break;\r\n            case 4:\r\n                if( ang<=-67.5 && ang>= -90 )\r\n                {\r\n                    return 3;\r\n                }\r\n                else if( ang<=-22.5 && ang>-67.5)\r\n                {\r\n                    return 2;\r\n                }\r\n                else{\r\n                    return 1;\r\n                }\r\n                break;\r\n        }\r\n    }\r\n\/*\r\n\u8ba1\u7b97\u4e24\u70b9\u5173\u7cfb\u6240\u5f62\u6210\u7684\u8c61\u9650\r\n\u4ee5P1 \u4f5c\u4e3a\u5750\u6807\u539f\u70b9\uff0cP2\u4e3a\u8bbe\u5b9a\u70b9\uff0c\u5224\u65adP2\u76f8\u5bf9\u4e8eP1\u65f6\u6240\u5728\u8c61\u9650\r\n *\/\r\nprivate quadrant(p1:egret.Point,p2:egret.Point):number\r\n{\r\n    if(p2.x>=p1.x)\r\n    {\r\n        if( p2.y <= p1.y )\r\n        {\r\n            return 1;\r\n        }\r\n        else\r\n        {\r\n            return 4;\r\n        }\r\n    }\r\n    else\r\n    {\r\n        if( p2.y <= p1.y )\r\n        {\r\n            return 2;\r\n        }\r\n        else\r\n        {\r\n            return 3;\r\n        }<\/pre>\n
\u7b2c\u516b\u6b65\uff1a\u65b9\u5411\u6570\u636e\u53bb\u91cd\u64cd\u4f5c<\/p>\n
\u6211\u4eec\u5728\u7b2c\u4e03\u6b65\u751f\u6210\u4e86\u65b9\u5411\u5e8f\u5217\uff0c\u4f46\u662f\u8fd9\u4e2a\u6570\u636e\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0\u8fd9\u6837\u7684\u73b0\u8c61\u3002\u4f8b\u5982\uff1a2\uff0c3\uff0c1\uff0c4\uff0c5\uff0c3\uff0c3\uff0c3\uff0c3\u3002<\/p>\n
\u4e0d\u96be\u53d1\u73b0\uff0c\u6700\u540e\u662f4\u4e2a3\u76f8\u8fde\u3002\u5bf9\u4e8e\u6211\u4eec\u540e\u7eed\u7684\u6b65\u9aa4\u6765\u8bf4\uff0c\u7528\u6237\u6240\u7ed8\u5236\u7684\u7ebf\u8def\u65b9\u5411\uff0c\u6bcf\u4e24\u4e2a\u76f8\u90bb\u7684\u65b9\u5411\u90fd\u5e94\u4e0d\u540c\u3002\u6240\u4ee5\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u505a\u53bb\u91cd\u64cd\u4f5c\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\/*\r\n\u5bf9\u6bd4\u53bb\u91cd\r\n *\/\r\nprivate repDiff(data:number[]):string\r\n{\r\n    var str:string = \"\";\r\n    var len:number = data.length;\r\n    var currentType:number = 0;\r\n    for(var i:number=0; i<len; i++)\r\n    {\r\n        if( currentType != data[i])\r\n        {\r\n            currentType = data[i];\r\n            str += data[i];\r\n        }\r\n    }\r\n    return str;\r\n}<\/pre>\n
\u7b2c\u4e5d\u6b65\uff1a\u8bc6\u522b\u5bf9\u6bd4<\/p>\n
\u7b2c\u516b\u6b65\u4e2d\u6211\u4eec\u5f97\u5230\u4e86\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u4e8b\u5b9e\u4e0a\u5b57\u7b26\u4e32\u5185\u5bb9\u4e5f\u5c31\u662f\u6211\u4eec\u6240\u89e3\u6790\u51fa\u6765\u7684\u65b9\u5411\u6570\u636e\u3002\u8fd9\u4e00\u6b65\u6211\u4eec\u8981\u548c\u5df2\u7ecf\u5b9a\u4e49\u597d\u7684\u6570\u636e\u8fdb\u884c\u5bf9\u6bd4\u3002\u6700\u7ec8\u4f1a\u5f97\u51fa\u4e00\u4e2a\u76f8\u4f3c\u7387\u3002\u5982\u679c\u76f8\u4f3c\u7387\u8d85\u8fc7\u4e00\u5b9a\u767e\u5206\u6bd4\uff0c\u6211\u4eec\u5c31\u8ba4\u4e3a\u7528\u6237\u4e66\u5199\u662f\u6b63\u786e\u7684\u3002<\/p>\n
\u5bf9\u4e8e\u4e24\u4e2a\u5b57\u7b26\u4e32\u6bd4\u8f83\u76f8\u4f3c\u5ea6\uff0c\u6211\u4eec\u76f4\u63a5\u4f7f\u7528Levenshtein Distance\u7b97\u6cd5\u3002<\/p>\n
\u4e0b\u9762\u662f\u6211\u4eec\u9884\u5148\u5b9a\u4e49\u7684\u7b54\u6848\u7684\u6570\u636e\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u7b14\u987a\u6709\u6b63\u6709\u53cd\uff0c\u4e24\u79cd\u90fd\u8981\u8003\u8651\u5230\u3002<\/p>\n
V\uff1a\"28\",\"46\"\r\n| \uff1a\"3\",\"7\"\r\n^ \uff1a\"82\",\"64\"\r\n- \uff1a\"5\",\"1\"\r\nZ\uff1a\"141\",\"585\"<\/pre>\n
\u5bf9\u6bd4\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
private sweep( str:string ):number\r\n{\r\n    var maxType:number = -1;\r\n    var max:number = -1;\r\n    var len:number = this._symbol.length;\r\n    for(var i:number=0; i<len; i++)\r\n    {\r\n        var val:number = this.Levenshtein_Distance_Percent(this._symbol[i], str);\r\n        if(val>max)\r\n        {\r\n            max = val;\r\n            maxType = this._symbolG[i];\r\n        }\r\n    }\r\n    if(max<0.4)\r\n    {\r\n        maxType = -1;\r\n    }\r\n    return maxType;\r\n}\r\nprivate Levenshtein_Distance(s,t)\r\n{\r\n    var n=s.length;\/\/ length of s\r\n    var m=t.length;\/\/ length of t\r\n    var d=[];\/\/ matrix\r\n    var i;\/\/ iterates through s\r\n    var j;\/\/ iterates through t\r\n    var s_i;\/\/ ith character of s\r\n    var t_j;\/\/ jth character of t\r\n    var cost;\/\/ cost\r\n    \/\/ Step 1\r\n    if (n == 0) return m;\r\n    if (m == 0) return n;\r\n    \/\/ Step 2\r\n    for (i = 0; i <= n; i++) {\r\n        d[i]=[];\r\n        d[i][0] = i;\r\n    }\r\n    for (j = 0; j <= m; j++) {\r\n        d[0][j] = j;\r\n    }\r\n    \/\/ Step 3\r\n    for (i = 1; i <= n; i++) {\r\n        s_i = s.charAt (i - 1);\r\n        \/\/ Step 4\r\n        for (j = 1; j <= m; j++) {\r\n            t_j = t.charAt (j - 1);\r\n            \/\/ Step 5\r\n            if (s_i == t_j) {\r\n                cost = 0;\r\n            }else{\r\n                cost = 1;\r\n            }\r\n            \/\/ Step 6\r\n            d[i][j] = this.Minimum (d[i-1][j]+1, d[i][j-1]+1, d[i-1][j-1] + cost);\r\n        }\r\n    }\r\n    \/\/ Step 7\r\n    return d[n][m];\r\n}\r\nprivate Levenshtein_Distance_Percent(s,t):number{\r\n    var l=s.length>t.length?s.length:t.length;\r\n    var d=this.Levenshtein_Distance(s,t);\r\n    return (1-d\/l);\/\/.toFixed(4);\r\n}\r\nprivate Minimum(a,b,c){\r\n    return a<b?(a<c?a:c):(b<c?b:c);\r\n}<\/pre>\n
\u6211\u5c06\u5bf9\u6bd4\u6570\u636e\u8bbe\u7f6e\u4e3a40%\uff0c\u5f53\u76f8\u4f3c\u7387\u5927\u4e8e40%\u7684\u65f6\u5019\uff0c\u5c31\u8ba4\u4e3a\u7528\u6237\u4e66\u5199\u6b63\u786e\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u6765\u8c03\u6574\u6e38\u620f\u7684\u96be\u6613\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8f6c\u81ea\uff1ahttp:\/\/www.ashan.org\/archives\/685\u00a0 \u00a0  … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[103],"tags":[173],"_links":{"self":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/601"}],"collection":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=601"}],"version-history":[{"count":3,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/601\/revisions"}],"predecessor-version":[{"id":712,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/601\/revisions\/712"}],"wp:attachment":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=601"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}