{"id":6473,"date":"2017-10-18T01:16:22","date_gmt":"2017-10-17T17:16:22","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=6473"},"modified":"2018-07-24T11:00:08","modified_gmt":"2018-07-24T03:00:08","slug":"js-api-pointer-lock","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2017\/10\/js-api-pointer-lock\/","title":{"rendered":"\u9f20\u6807\u65e0\u9650\u79fb\u52a8 JS API Pointer Lock\u7b80\u4ecb"},"content":{"rendered":"

by zhangxinxu<\/a> from http:\/\/www.zhangxinxu.com\/wordpress\/?p=6473<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u5f97\u5230\u539f\u4f5c\u8005\u4e66\u9762\u8bb8\u53ef\uff0c\u540c\u65f6\u4fdd\u7559\u539f\u4f5c\u8005\u548c\u51fa\u5904\uff0c\u6458\u8981\u5f15\u6d41\u5219\u968f\u610f\u3002<\/p>\n

\u4e00\u3001Pointer Lock API\u662f\u5e72\u561b\u7528\u7684\uff1f<\/h3>\n

\u7528\u4e00\u53e5\u8bdd\u8bf4\u660ePointer Lock API\u7684\u4f5c\u7528\u5c31\u662f\uff1aPointer Lock API\u53ef\u4ee5\u8ba9\u4f60\u7684\u9f20\u6807\u65e0\u9650\u79fb\u52a8\uff0c\u8131\u79bb\u6d4f\u89c8\u5668\u7a97\u4f53\u7684\u9650\u5236\uff01<\/p>\n

\u8fd9\u5bf9\u4e8e\u4e00\u4e9b\u9700\u8981\u9f20\u6807\u63a7\u5236\u7684\u5e94\u7528\u975e\u5e38\u6709\u7528\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u67d03D VR\u5973\u53cb\u7684\u6e38\u620f\uff0c\u4f60\u9f20\u6807\u5411\u4e0a\u79fb\u52a8\uff0c\u5219\u4f60\u7684\u89c6\u89d2\u5c31\u4f1a\u5f80\u4e0b\u3002<\/p>\n

\"\u5e0c\u671b\u5f80\u4e0b\u7684\u89c6\u89d2\"<\/p>\n

\u5728\u9ed8\u8ba4\u7f51\u9875\u73af\u5883\u4e0b\uff0c\u4f60\u9f20\u6807\u79fb\u52a8\u5230\u6d4f\u89c8\u5668\u4e0a\u8fb9\u7f18\u5c31\u4e0d\u80fd\u518d\u5f80\u4e0a\u4e86\uff0c\u7ed3\u679c\uff0c\u672c\u6765\u8fd8\u5dee\u4e00\u70b9\u70b9\u89d2\u5ea6\u5c31\u80fd\u770b\u5230\u80d6\u6b21\uff0c\u7ed3\u679c\u5361\u5728\u4e86\u5173\u952e\u5730\u65b9\uff0c\u5c82\u4e0d\u975e\u5e38\u5f71\u54cd\u6e38\u620f\u4f53\u9a8c\u3002<\/p>\n

\u4f46\u662f\u5982\u679c\u4f7f\u7528\u4e86Pointer Lock API\uff0c\u5c31\u4e0d\u4f1a\u51fa\u73b0\u8fd9\u6837\u7684\u95ee\u9898\uff0c\u9f20\u6807\u53ef\u4ee5\u65e0\u9650\u79fb\u52a8\uff0c\u5750\u6807\u53ef\u4ee5\u65e0\u9650\u589e\u5927\uff0c\u5b8c\u5168\u8131\u79bb\u4e86\u6d4f\u89c8\u5668\u7a97\u53e3\u7684\u9650\u5236\uff0c\u53ef\u4ee5\u5b8c\u7f8e\u4eab\u53d7\u6c89\u6d78\u5f0f\u64cd\u4f5c\u4f53\u9a8c\u3002<\/p>\n

\u4e8c\u3001Pointer Lock API\u6709\u54ea\u4e9b\u5177\u4f53API\u540d\u79f0\uff1f<\/h3>\n

\u76ee\u524d\uff0cPointer Lock API\u5171\u652f\u63013\u4e2a\u5c5e\u6027\uff0c2\u4e2a\u65b9\u6cd5\u548c2\u4e2a\u4e8b\u4ef6\uff0c\u5206\u522b\u5982\u4e0b\uff1a<\/p>\n

\n
3\u4e2a\u5c5e\u6027<\/dt>\n
Document.pointerLockElement<\/dd>\n
Document.onpointerlockchange<\/dd>\n
Document.onpointerlockerror<\/dd>\n
2\u4e2a\u65b9\u6cd5<\/dt>\n
Element.requestPointerLock()<\/dd>\n
Document.exitPointerLock()<\/dd>\n
2\u4e2a\u4e8b\u4ef6<\/dt>\n
pointerlockchange<\/dd>\n
pointerlockerror<\/dd>\n<\/dl>\n

\u5176\u4e2d\uff0c2\u4e2a\u4e8b\u4ef6\u548c\u5176\u4e2d2\u4e2a\u5c5e\u6027\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u5b9e\u9645\u4e0a\u9700\u8981\u4e86\u89e3\u7684\u77e5\u8bc6\u70b9\u662f\u4e0b\u9762\u8fd9\u4e9b\uff1a
\nDocument.pointerLockElement<\/code>\uff0c\u4ee5\u53caElement.requestPointerLock()<\/code>\uff0cDocument.exitPointerLock()<\/code>\u4ee5\u53capointerlockchange<\/code>\u548cpointerlockerror<\/code>\u4e8b\u4ef6\u3002<\/p>\n

1. Document.pointerLockElement<\/h4>\n

\u6307\u5f53\u524d\u9875\u9762\u89e6\u53d1\u9f20\u6807\u65e0\u9650\u6eda\u52a8\u7684\u5143\u7d20\uff0c\u901a\u5e38\u4f7f\u7528\u8bed\u6cd5\u4e3a\uff1a<\/p>\n

var element = document.pointerLockElement;<\/pre>\n
\u8fd4\u56de\u7684\u662f\u4e00\u4e2aDOM\u5143\u7d20\u5bf9\u8c61\uff0c\u5982\u679c\u5f53\u524d\u9875\u9762\u662f\u975e\u9f20\u6807\u9501\u5b9a\u72b6\u6001\uff0c\u5219\u8fd4\u56de\u503c\u662fnull<\/code>\u3002<\/p>\n
2. Element.requestPointerLock()<\/h4>\n
\u53ef\u4ee5\u8ba9\u9875\u9762\u8fdb\u5165\u9f20\u6807\u9501\u5b9a\u72b6\u6001\uff08\u9f20\u6807\u76f4\u63a5\u6d88\u5931\uff09\uff0c\u9f20\u6807\u65e0\u9650\u6eda\u52a8\uff0c\u5750\u6807\u65e0\u9650\u53d8\u5316\u3002\u901a\u5e38\u4f7f\u7528\u8bed\u6cd5\u4e3a\uff1a<\/p>\n
var element.requestPointerLock();<\/pre>\n
3. Document.exitPointerLock()<\/h4>\n
\u8ba9\u9875\u9762\u4ece\u9f20\u6807\u9501\u5b9a\u72b6\u6001\u9000\u51fa\uff0c\u901a\u5e38\u4f7f\u7528\u8bed\u6cd5\u4e3a\uff1a<\/p>\n
document.exitPointerLock();<\/pre>\n
\u6d4f\u89c8\u5668\u9ed8\u8ba4\u652f\u6301\u6309\u4e0bESC\u952e\u9000\u51fa\u9f20\u6807\u9501\u5b9a\u72b6\u6001\uff0c\u4f46\u662f\u7528\u6237\u6709\u65f6\u5019\u66f4\u4e60\u60ef\u4e8e\u70b9\u51fb\u53d6\u6d88\u7b49\uff0c\u6b64\u65f6\u5c31\u53ef\u4ee5\u4f7f\u7528document.exitPointerLock()<\/code>\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n
4. pointerlockchange\u4e8b\u4ef6<\/h4>\n
\u5f53\u9875\u9762\u9f20\u6807\u9501\u5b9a\u72b6\u6001\u6539\u53d8\u7684\u65f6\u5019\u89e6\u53d1\u3002\u4f8b\u5982\uff1a<\/p>\n
document.addEventListener('pointerlockchange', function () {\n    \/\/ ...<\/span>\n}, false);<\/pre>\n
5. pointerlockerror\u4e8b\u4ef6<\/h4>\n
\u5f53\u9875\u9762\u9f20\u6807\u9501\u5b9a\u5931\u8d25\u7684\u65f6\u5019\u89e6\u53d1\u3002\u4f8b\u5982\u5f53\u4f60\u8bd5\u56fe\u540c\u65f6\u9501\u5b9a\u540c\u4e00\u4e2a\u9875\u9762\u7684\u591a\u4e2a<iframe><\/code>\u65f6\u5019\uff0c\u5c31\u4f1a\u89e6\u53d1\u8fd9\u4e2a\u51fa\u9519\u4e8b\u4ef6\u3002<\/p>\n
\u4e8c\u3001Pointer Lock API\u7684\u56fe\u7247\u65e0\u96503D\u65cb\u8f6cJS\u5b9e\u4f8b\u4e00\u5219<\/h3>\n
\u770b\u5b8c\u4e86\u5e72\u5df4\u5df4\u7684\u8bed\u6cd5\u8bf4\u660e\uff0c\u6211\u4eec\u8fd8\u662f\u6765\u770b\u4e00\u70b9\u9c9c\u6d3b\u7684\u6848\u4f8b\u5427\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u72e0\u72e0\u7684\u70b9\u51fb\u8fd9\u91cc\uff1aJS Pointer Lock\u4e0e\u56fe\u7247\u65e0\u96503D\u65cb\u8f6cdemo<\/a><\/p>\n
\u9ed8\u8ba4\u8fdb\u53bb\u4f1a\u770b\u5230\u4e00\u4e2a\u76f8\u8c8c\u5e73\u5e73\u7684\u5973\u751f\uff0c\u7136\u540e\u70b9\u51fb\u8fd9\u5f20\u56fe\u7247\uff1a<\/p>\n
\"\u70b9\u51fb\u56fe\u7247\"<\/p>\n
\u6b64\u65f6\u9f20\u6807\u4f1a\u7acb\u5373\u6d88\u5931\uff0c\u540c\u65f6\u56fe\u7247\u5c31\u4f1a\u6839\u636e\u4f60\u7684\u9f20\u6807\u4f4d\u7f6e\u5f00\u59cb\u7ffb\u6c5f\u5012\u6d77\uff0c\u5c31\u50cf\u8fd9\u6837\u5b50\uff1a<\/p>\n
\"\u56fe\u7247\u7ffb\u6c5f\u5012\u6d77\u622a\u56fe\u793a\u610f\"<\/p>\n
\u800c\u4e14\u9f20\u6807\u7684\u6d3b\u52a8\u8303\u56f4\u4f3c\u4e4e\u6ca1\u6709\u8fb9\u754c\uff0c\u5373\u4f7f\u79fb\u52a8\u4e86\u4e00\u4e07\u4e2a\u5c4f\u5e55\u7684\u5bbd\u5ea6\uff0c\u6211\u4eec\u7684\u56fe\u7247\u4f9d\u7136\u7ffb\u8f6c\u4e2a\u4e0d\u505c\u3002\u8fd9\u5c31\u662fPointer Lock API\u7684\u7279\u6027\u8868\u73b0\u3002<\/p>\n
\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
<img id=\"image\" src=\"mm1.jpg\"><\/pre>\n
JS\u90e8\u5206\uff1a<\/p>\n
\nvar eleImage = document.getElementById('image');\nif (eleImage) {\n    \/\/ \u8d77\u59cb\u503c<\/span>\n    var moveX = 0, moveY = 0;\n    \/\/ \u56fe\u7247\u65e0\u9650\u53d8\u6362\u7684\u65b9\u6cd5<\/span>\n    var rotate3D = function (event) {\n        moveX = moveX + event.movementX;\n        moveY = moveY + event.movementY;\n\n        eleImage.style.transform = 'rotateX(' + moveY + 'deg) rotateY(' + moveX + 'deg)';  \n    };\n\n    \/\/ \u89e6\u53d1\u9f20\u6807\u9501\u5b9a<\/span>\n    eleImage.addEventListener('click', function () {\n        eleImage.requestPointerLock()<\/span>;\n    });\n\n    \/\/ \u518d\u6b21\u70b9\u51fb\u9875\u9762\uff0c\u53d6\u6d88\u9f20\u6807\u9501\u5b9a\u5904\u7406<\/span>\n    document.addEventListener('click', function () {\n        if (document.pointerLockElement == eleImage) {\n            document.exitPointerLock()<\/span>;\n        } \n    });\n\n    \/\/ \u68c0\u6d4b\u9f20\u6807\u9501\u5b9a\u72b6\u6001\u53d8\u5316<\/span>\n    document.addEventListener('pointerlockchange'<\/span>, function () {\n        if (document.pointerLockElement<\/span> == eleImage) {\n            document.addEventListener(\"mousemove\", rotate3D, false);\n        } else {\n            document.removeEventListener(\"mousemove\", rotate3D, false);\n        }\n    }, false);\n}<\/pre>\n
\u5176\u4e2d\uff0c\u5e94\u7528\u4e86\u9664\u4e86pointerlockerror<\/code>\u4e8b\u4ef6\u5916\u7684\u5176\u4ed6\u6240\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\uff08\u89c1\u7ea2\u8272\u9ad8\u4eae\uff09\u3002<\/p>\n
\u539f\u7406\u5927\u81f4\u5982\u4e0b\uff1a<\/strong>
\n\u70b9\u51fb\u56fe\u7247\uff0c\u6267\u884celeImage.requestPointerLock()<\/code>\u8ba9\u9875\u9762\u8fdb\u5165\u9f20\u6807\u9501\u5b9a\u72b6\u6001\uff0c\u6b64\u65f6\u4f1a\u89e6\u53d1'pointerlockchange'<\/code>\u4e8b\u4ef6\uff0c\u4e8e\u662f\uff0c\u7ed9\u9875\u9762\u7ed1\u5b9a\u9f20\u6807\u79fb\u52a8\u6539\u53d8\u56fe\u7247\u65cb\u8f6c\u7684\u65b9\u6cd5\uff0c\u4e3a\u4e86\u907f\u514d\u91cd\u590d\u7ed1\u5b9a\uff0c\u6211\u4eec\u501f\u52a9document.pointerLockElement<\/code>\u5224\u65ad\u9875\u9762\u7684\u9501\u5b9a\u72b6\u6001\u3002\u6700\u540e\uff0c\u4e3a\u4e86\u65b9\u4fbf\u53d6\u6d88\u9875\u9762\u7684\u9501\u5b9a\u72b6\u6001\uff0c\u6211\u4eec\u5728\u9875\u9762\u4e0a\u7ed1\u5b9a\u4e86\u70b9\u51fb\u4e8b\u4ef6\uff0c\u901a\u8fc7document.exitPointerLock()<\/code>\u53d6\u6d88\u9875\u9762\u7684\u9501\u5b9a\u72b6\u6001\u3002<\/p>\n
\u9700\u8981\u8bf4\u660e\u7684\uff1a<\/strong>
\nevent.movementX<\/code>\u548cevent.movementY<\/code>\u8868\u793a\u6bcf\u6b21mousemove<\/code>\u4e8b\u4ef6\u89e6\u53d1\u65f6\u5019\uff0c\u8ddd\u79bb\u4e0a\u6b21\u79fb\u52a8\u7684\u6c34\u5e73\u548c\u5782\u76f4\u4f4d\u7f6e\u5927\u5c0f\uff0c\u800c\u4e0d\u662f\u5177\u4f53\u7684\u67d0\u4e2a\u5750\u6807\u503c\u3002\u56e0\u6b64\uff0c\u9700\u8981\u548c\u521d\u59cb\u5750\u6807\u4e0d\u65ad\u7684\u7d2f\u52a0\u786e\u5b9a\u5f53\u524d\u79fb\u52a8\u4f4d\u7f6e\u3002<\/p>\n
\u56db\u3001\u7ed3\u675f\u8bed<\/h3>\n
\u6700\u540e\u8bf4\u4e0bPointer Lock API\u7684\u517c\u5bb9\u6027\u3002<\/p>\n
\u7531\u4e8ePointer Lock API\u662f\u4e0e\u9f20\u6807\u76f8\u5173\u7684API\uff0c\u56e0\u6b64\u6240\u6709\u79fb\u52a8\u7aef\u90fd\u4e0d\u652f\u6301\uff0c\u56e0\u4e3a\u6ca1\u6709\u5fc5\u8981\u652f\u6301\u3002<\/p>\n
\u5bf9\u4e8e\u684c\u9762\u6d4f\u89c8\u5668\uff0cChrome\uff0cFirefox\u4ee5\u53caEdge\u6d4f\u89c8\u5668\u90fd\u662f\u652f\u6301\u7684\uff0c\u5e76\u4e14\u73b0\u5728\u4f7f\u7528\u53ef\u4ee5\u4e0d\u52a0\u79c1\u6709\u524d\u7f00\uff0c\u76f4\u63a5\u8d70\u8d77\u3002IE\u5e76\u4e0d\u652f\u6301\uff0c\u4f46\u8fd9\u5e76\u4e0d\u59a8\u788d\u6211\u4eec\u8fdb\u884c\u589e\u5f3a\u4f7f\u7528Pointer Lock API\u3002<\/p>\n
\u4ee5\u4e0a~<\/p>\n
<\/p>\n
\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002
\n\u672c\u6587\u5730\u5740\uff1ahttp:\/\/www.zhangxinxu.com\/wordpress\/?p=6473<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7528\u4e00\u53e5\u8bdd\u8bf4\u660ePointer Lock API\u7684\u4f5c\u7528\u5c31\u662f\uff1aPointer Lock API\u53ef\u4ee5\u8ba9\u4f60\u7684\u9f20\u6807\u65e0\u9650\u79fb\u52a8\uff0c\u8131\u79bb\u6d4f\u89c8\u5668\u7a97\u4f53\u7684\u9650\u5236\uff01<\/p>\n
\u8fd9\u5bf9\u4e8e\u4e00\u4e9b\u9700\u8981\u9f20\u6807\u63a7\u5236\u7684\u5e94\u7528\u975e\u5e38\u6709\u7528\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u67d03D VR\u5973\u53cb\u7684\u6e38\u620f\uff0c\u4f60\u9f20\u6807\u5411\u4e0a\u79fb\u52a8\uff0c\u5219\u4f60\u7684\u89c6\u89d2\u5c31\u4f1a\u5f80\u4e0b\u2026\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1284],"tags":[215,1175,661,1176,1173,1174,96],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/6473"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=6473"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/6473\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=6473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=6473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=6473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}