{"id":1073,"date":"2026-07-22T21:55:00","date_gmt":"2026-07-22T13:55:00","guid":{"rendered":"https:\/\/meecarlo.com\/old\/2026\/07\/22\/unity-ies-photometric-preview-editor\/"},"modified":"2026-07-22T21:55:00","modified_gmt":"2026-07-22T13:55:00","slug":"unity-ies-photometric-preview-editor","status":"publish","type":"post","link":"https:\/\/meecarlo.com\/old\/2026\/07\/22\/unity-ies-photometric-preview-editor\/","title":{"rendered":"\u4ece LM-63 \u5230\u5b9e\u65f6\u9884\u89c8\uff1aUnity IES \u5149\u5ea6\u6587\u4ef6\u7f16\u8f91\u5668"},"content":{"rendered":"

IES \u6587\u4ef6\u4fdd\u5b58\u7684\u4e0d\u662f\u4e00\u5f20\u706f\u5149\u7eb9\u7406\uff0c\u800c\u662f\u706f\u5177\u5728\u4e0d\u540c\u7a7a\u95f4\u65b9\u5411\u4e0a\u7684\u5149\u5f3a\u5206\u5e03\u3002\u8fd9\u4e2a\u5de5\u5177\u7684\u76ee\u6807\uff0c\u662f\u8ba9\u6280\u672f\u7f8e\u672f\u548c\u706f\u5149\u7f8e\u672f\u65e0\u9700\u79bb\u5f00 Unity\uff0c\u5c31\u80fd\u8bfb\u53d6 IESNA LM-63\u3001\u68c0\u67e5\u5149\u5ea6\u66f2\u7ebf\u3001\u89c2\u5bdf\u771f\u5b9e\u843d\u5730\u5f62\u72b6\u3001\u7f16\u8f91\u80fd\u91cf\u5206\u5e03\uff0c\u5e76\u628a\u7ed3\u679c\u91cd\u65b0\u4fdd\u5b58\u6210\u53ef\u88ab\u5176\u4ed6\u6e32\u67d3\u5668\u7ee7\u7eed\u4f7f\u7528\u7684\u6807\u51c6\u6587\u4ef6\u3002<\/p>\n

\"Unity
\u5de5\u5177\u540c\u65f6\u5c55\u793a\u5149\u5ea6\u5b66\u6570\u636e\u4e0e\u53ef\u7f16\u8f91\u66f2\u7ebf\u3002\u6240\u6709\u622a\u56fe\u5747\u6765\u81ea\u72ec\u7acb\u6d4b\u8bd5\u8d44\u6e90\uff0c\u4e0d\u5305\u542b\u9879\u76ee\u573a\u666f\u3001\u4e1a\u52a1\u8d44\u4ea7\u6216\u5185\u90e8\u8def\u5f84\u3002<\/figcaption><\/figure>\n
\n
IESNA LM-63<\/strong>\u6587\u672c\u89e3\u6790\u4e0e\u6807\u51c6\u56de\u5199<\/span><\/div>\n
C-\u03b3 Table<\/strong>\u4e8c\u7ef4\u574e\u5fb7\u62c9\u5206\u5e03<\/span><\/div>\n
2D + 3D<\/strong>\u66f2\u7ebf\u3001\u6295\u5f71\u4e0e\u7a7a\u95f4\u9884\u89c8<\/span><\/div>\n
Editor Only<\/strong>\u4e0d\u5f15\u5165\u8fd0\u884c\u65f6\u6210\u672c<\/span><\/div>\n<\/div>\n

\u95ee\u9898\uff1a\u4e00\u4efd IES \u6587\u4ef6\u4e3a\u4ec0\u4e48\u96be\u4ee5\u76f4\u63a5\u5224\u65ad<\/h2>\n

\u4f20\u7edf\u7684\u7eb9\u7406\u9884\u89c8\u9002\u5408\u989c\u8272\u548c\u6cd5\u7ebf\uff0c\u5374\u4e0d\u9002\u5408 IES\u3002IES \u8bb0\u5f55\u7684\u662f\u5149\u5f3a I(C, \u03b3)<\/code>\uff1a\u03b3<\/code> \u8868\u793a\u76f8\u5bf9\u706f\u5177\u5149\u8f74\u7684\u5782\u76f4\u89d2\uff0cC<\/code> \u8868\u793a\u7ed5\u5149\u8f74\u65cb\u8f6c\u7684\u6c34\u5e73\u89d2\u3002\u4e00\u4e2a\u503c\u7684\u5355\u4f4d\u662f candela\uff0c\u5b83\u63cf\u8ff0\u201c\u5411\u8fd9\u4e2a\u65b9\u5411\u53d1\u51fa\u591a\u5f3a\u7684\u5149\u201d\uff0c\u800c\u4e0d\u662f\u5c4f\u5e55\u4e0a\u7684\u6700\u7ec8\u4eae\u5ea6\u3002<\/p>\n

\u56e0\u6b64\uff0c\u5de5\u7a0b\u91cc\u771f\u6b63\u9700\u8981\u56de\u7b54\u7684\u662f\u4e09\u7c7b\u95ee\u9898\uff1a\u6587\u4ef6\u662f\u5426\u6709\u6548\uff0c\u5149\u675f\u5728\u89d2\u5ea6\u57df\u91cc\u662f\u4ec0\u4e48\u5f62\u72b6\uff0c\u4ee5\u53ca\u5b83\u6253\u5230\u771f\u5b9e\u8868\u9762\u540e\u4f1a\u5f62\u6210\u600e\u6837\u7684\u7167\u5ea6\u3002\u53ea\u6709\u6781\u5750\u6807\u56fe\u4f1a\u7f3a\u5c11\u7a7a\u95f4\u76f4\u89c9\uff1b\u53ea\u628a IES \u6302\u5230\u573a\u666f\u706f\u5149\u4e0a\uff0c\u53c8\u4f1a\u88ab\u66dd\u5149\u3001\u6750\u8d28\u3001\u5929\u6c14\u548c\u6e32\u67d3\u7ba1\u7ebf\u5e72\u6270\u3002\u5de5\u5177\u628a\u8fd9\u4e09\u5c42\u62c6\u5f00\uff0c\u5206\u522b\u63d0\u4f9b\u6570\u636e\u3001\u7269\u7406\u6295\u5f71\u548c\u72ec\u7acb 3D \u9884\u89c8\u3002<\/p>\n

\n
LM-63 Text<\/strong>Header \/ TILT \/ Angles \/ Candela<\/span><\/div>\n

\u2192<\/i><\/p>\n

IESData<\/strong>C-\u03b3 \u4e8c\u7ef4\u5149\u5f3a\u8868<\/span><\/div>\n

\u2192<\/i><\/p>\n

Preview<\/strong>Polar \/ Surface \/ 3D<\/span><\/div>\n

\u2192<\/i><\/p>\n

Edit<\/strong>Scale \/ Spread \/ Shift \/ Curve<\/span><\/div>\n

\u2192<\/i><\/p>\n

Serialize<\/strong>\u91cd\u7b97\u5cf0\u503c\u4e0e\u5149\u901a\u91cf<\/span><\/div>\n<\/div>\n

\u7b2c\u4e00\u5c42\uff1a\u628a LM-63 \u89e3\u6790\u6210\u53ef\u5de5\u4f5c\u7684\u5149\u5ea6\u6570\u636e<\/h2>\n

\u89e3\u6790\u5668\u5148\u8bfb\u53d6\u7248\u672c\u5934\u4e0e\u65b9\u62ec\u53f7\u5173\u952e\u5b57\uff0c\u76f4\u5230\u9047\u5230 TILT=<\/code>\uff1b\u968f\u540e\u628a\u6362\u884c\u3001\u7a7a\u683c\u3001\u5236\u8868\u7b26\u548c\u9017\u53f7\u7edf\u4e00\u89c6\u4e3a\u6570\u503c\u5206\u9694\u7b26\u3002\u8fd9\u6837\u53ef\u4ee5\u517c\u5bb9\u4e0d\u540c\u5382\u5546\u5bfc\u51fa\u65f6\u7684\u6298\u884c\u5dee\u5f02\u3002\u6570\u503c\u8bfb\u53d6\u4f7f\u7528 InvariantCulture<\/code>\uff0c\u907f\u514d\u7f16\u8f91\u5668\u7cfb\u7edf\u8bed\u8a00\u6539\u53d8\u5c0f\u6570\u70b9\u8bed\u4e49\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
\u6570\u636e\u6bb5<\/th>\n\u4e3b\u8981\u5b57\u6bb5<\/th>\n\u5de5\u5177\u4e2d\u7684\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
Header \/ Keywords<\/td>\nLM-63 \u7248\u672c\u3001\u706f\u5177\u540d\u79f0\u3001\u5382\u5546\u63cf\u8ff0<\/td>\n\u8d44\u4ea7\u8bc6\u522b\u4e0e\u4fdd\u5b58\u65f6\u4fdd\u7559\u5143\u6570\u636e<\/td>\n<\/tr>\n
Photometric header<\/td>\n\u706f\u6570\u3001\u6d41\u660e\u3001\u500d\u7387\u3001\u89d2\u5ea6\u6570\u91cf\u3001Type\u3001\u5355\u4f4d\u548c\u706f\u5177\u5c3a\u5bf8<\/td>\n\u6821\u9a8c\u6587\u4ef6\u3001\u663e\u793a\u6458\u8981\u3001\u786e\u5b9a\u6570\u7ec4\u5c3a\u5bf8<\/td>\n<\/tr>\n
Vertical angles<\/td>\n\u03b3[0..V-1]<\/code><\/td>\n\u63cf\u8ff0\u79bb\u5f00\u5149\u8f74\u7684\u91c7\u6837\u89d2<\/td>\n<\/tr>\n
Horizontal angles<\/td>\nC[0..H-1]<\/code><\/td>\n\u63cf\u8ff0\u7ed5\u5149\u8f74\u7684\u91c7\u6837\u5e73\u9762\u4e0e\u5bf9\u79f0\u6027<\/td>\n<\/tr>\n
Candela table<\/td>\ncd[H,V] \u00d7 multiplier<\/code><\/td>\n\u9884\u89c8\u3001\u7f16\u8f91\u4e0e\u4fdd\u5b58\u7684\u6838\u5fc3\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u8bfb\u53d6\u574e\u5fb7\u62c9\u8868\u65f6\uff0c\u539f\u59cb multiplier \u4f1a\u7acb\u5373\u4e58\u8fdb\u6bcf\u4e2a\u6837\u672c\uff0c\u5185\u90e8\u59cb\u7ec8\u4f7f\u7528\u7edd\u5bf9\u5149\u5f3a\u3002\u540c\u65f6\u904d\u5386\u6574\u5f20\u8868\u5f97\u5230\u5cf0\u503c candela \u53ca\u5bf9\u5e94\u7684 (C, \u03b3)<\/code>\uff0c\u540e\u7eed\u7684\u5f52\u4e00\u5316\u3001\u66dd\u5149\u53c2\u8003\u548c\u5149\u675f\u89d2\u8ba1\u7b97\u90fd\u4f9d\u8d56\u8fd9\u4e00\u7ec4\u7edf\u8ba1\u6570\u636e\u3002<\/p>\n

TILT \u7684\u5904\u7406\u8fb9\u754c<\/strong><\/p>\n

\u89e3\u6790\u5668\u80fd\u591f\u8df3\u8fc7\u6587\u4ef6\u5185\u5d4c\u7684 TILT \u6570\u636e\uff0c\u4f7f\u9884\u89c8\u4e0d\u4f1a\u56e0\u989d\u5916\u6570\u503c\u6bb5\u9519\u4f4d\uff1b\u4f46\u7f16\u8f91\u548c\u4fdd\u5b58\u53ea\u5141\u8bb8 TILT=NONE<\/code>\u3002\u8fd9\u662f\u523b\u610f\u7684\u9632\u5fa1\u6027\u7ea6\u675f\uff1a\u6ca1\u6709\u5b8c\u6574\u5b9e\u73b0\u503e\u659c\u706f\u5177\u7684\u53d8\u6362\u8bed\u4e49\u524d\uff0c\u4e0d\u5e94\u8be5\u5199\u51fa\u770b\u4f3c\u5408\u6cd5\u3001\u5b9e\u9645\u65b9\u5411\u9519\u8bef\u7684\u6587\u4ef6\u3002<\/p>\n<\/div>\n

\u7b2c\u4e8c\u5c42\uff1a\u6781\u5750\u6807\u56fe\u628a\u201c\u5149\u5f80\u54ea\u91cc\u8d70\u201d\u753b\u51fa\u6765<\/h2>\n

\u6781\u5750\u6807\u56fe\u4ee5\u706f\u5177\u5149\u8f74\u4e3a 0\u00b0\uff0c\u7ed8\u5236 C0 \u548c C90 \u4e24\u4e2a\u5178\u578b\u622a\u9762\u3002\u534a\u5f84\u8868\u793a\u5149\u5f3a\uff0c\u89d2\u5ea6\u8868\u793a \u03b3<\/code>\u3002\u7ebf\u6027\u6a21\u5f0f\u9002\u5408\u6bd4\u8f83\u7edd\u5bf9\u80fd\u91cf\uff0cLog \u6a21\u5f0f\u80fd\u628a\u5f31\u5c3e\u90e8\u62c9\u51fa\u6765\u68c0\u67e5\uff1bNormalize \u5219\u8ba9\u4e0d\u540c\u529f\u7387\u7684\u706f\u5177\u53ef\u4ee5\u53ea\u6bd4\u8f83\u5149\u675f\u5f62\u72b6\u3002<\/p>\n

\"IES
\u6781\u5750\u6807\u66f2\u7ebf\u4e0e\u6587\u4ef6\u6458\u8981\u5e76\u6392\u663e\u793a\u3002\u793a\u4f8b\u4e3a\u8f74\u5bf9\u79f0\u5206\u5e03\uff0c\u56e0\u6b64 C0 \u4e0e C90 \u91cd\u5408\uff1b\u5de5\u5177\u4ecd\u660e\u786e\u6807\u8bb0\u4e24\u4e2a\u5149\u5ea6\u5e73\u9762\u7684\u8bed\u4e49\u3002<\/figcaption><\/figure>\n

Beam Angle \u548c Field Angle \u4e0d\u662f\u989d\u5916\u5b58\u50a8\u7684\u5b57\u6bb5\uff0c\u800c\u662f\u4ece\u5cf0\u503c\u5411\u4e24\u4fa7\u5bfb\u627e\u9608\u503c\u4ea4\u70b9\u5f97\u5230\u7684\u6d3e\u751f\u6307\u6807\u3002\u5de5\u5177\u5206\u522b\u4f7f\u7528\u5cf0\u503c\u7684 50% \u548c 10% \u4f5c\u4e3a\u9608\u503c\uff0c\u7528\u4e8e\u5feb\u901f\u5224\u65ad\u4e3b\u5149\u675f\u5bbd\u5ea6\u4e0e\u5916\u56f4\u6709\u6548\u8303\u56f4\u3002\u5b83\u4eec\u9002\u5408\u8d44\u4ea7\u7b5b\u9009\uff0c\u4f46\u4e0d\u80fd\u66ff\u4ee3\u5b8c\u6574\u66f2\u7ebf\uff0c\u56e0\u4e3a\u4e24\u4e2a\u5149\u675f\u89d2\u76f8\u540c\u7684\u706f\u5177\u4ecd\u53ef\u80fd\u62e5\u6709\u5b8c\u5168\u4e0d\u540c\u7684\u80a9\u90e8\u548c\u5c3e\u90e8\u3002<\/p>\n

\u7b2c\u4e09\u5c42\uff1a\u4ece\u574e\u5fb7\u62c9\u5230\u8868\u9762\u7167\u5ea6<\/h2>\n

\u4e3a\u4e86\u56de\u7b54\u201c\u6253\u5230\u5730\u9762\u6216\u5899\u4e0a\u662f\u4ec0\u4e48\u6837\u201d\uff0c\u5de5\u5177\u63d0\u4f9b\u7eaf CPU \u7684\u8868\u9762\u6295\u5f71\u3002\u6bcf\u4e2a\u50cf\u7d20\u5148\u4ece\u706f\u5177\u4f4d\u7f6e\u6784\u9020\u65b9\u5411\uff0c\u6362\u7b97\u4e3a (C, \u03b3)<\/code>\uff0c\u518d\u5728\u574e\u5fb7\u62c9\u8868\u4e2d\u505a\u53cc\u7ebf\u6027\u63d2\u503c\u3002\u6700\u7ec8\u7167\u5ea6\u9075\u5faa\u70b9\u5149\u6e90\u7684\u57fa\u672c\u5173\u7cfb\uff1a<\/p>\n

E(p) = I(C, \u03b3) \u00b7 max(0, N \u00b7 L) \/ r\u00b2<\/code><\/pre>\n
\u5176\u4e2d I<\/code> \u662f\u8be5\u65b9\u5411\u7684\u5149\u5f3a\uff0cN \u00b7 L<\/code> \u662f\u8868\u9762\u5165\u5c04\u4f59\u5f26\uff0cr\u00b2<\/code> \u662f\u5e73\u65b9\u53cd\u6bd4\u8870\u51cf\u3002\u9884\u89c8\u518d\u7528\u5cf0\u503c\u548c\u706f\u8ddd\u505a\u81ea\u52a8\u66dd\u5149\uff0c\u5e76\u7ecf\u8fc7\u6307\u6570\u578b tone mapping \u4e0e sRGB \u8f6c\u6362\u3002\u8fd9\u6837\u65e2\u4fdd\u7559\u5149\u675f\u5f62\u72b6\uff0c\u53c8\u4e0d\u4f1a\u8ba9\u4e0d\u540c\u91cf\u7ea7\u7684 IES \u5728\u7f16\u8f91\u5668\u91cc\u76f4\u63a5\u5168\u767d\u6216\u5168\u9ed1\u3002<\/p>\n
\u5bf9\u79f0\u6027\u5c55\u5f00\u662f\u6b63\u786e\u91c7\u6837\u7684\u5173\u952e<\/h3>\n
IES \u6587\u4ef6\u4e3a\u4e86\u8282\u7701\u6570\u636e\uff0c\u5e38\u5e38\u53ea\u4fdd\u5b58\u90e8\u5206\u6c34\u5e73\u89d2\uff1a\u4e00\u884c\u4ee3\u8868\u8f74\u5bf9\u79f0\uff0c0\u00b0 \u5230 90\u00b0 \u4ee3\u8868\u56db\u8c61\u9650\u5bf9\u79f0\uff0c0\u00b0 \u5230 180\u00b0 \u4ee3\u8868\u53cc\u8fb9\u5bf9\u79f0\uff0c\u63a5\u8fd1\u5b8c\u6574\u4e00\u5708\u5219\u6309\u5168\u65b9\u5411\u6570\u636e\u5904\u7406\u3002\u91c7\u6837\u4efb\u610f C \u89d2\u65f6\uff0c\u5de5\u5177\u5148\u6309\u6587\u4ef6\u58f0\u660e\u9690\u542b\u7684\u5bf9\u79f0\u6027\u6298\u53e0\u5230\u5df2\u5b58\u533a\u95f4\uff0c\u518d\u5728 C \u548c \u03b3 \u4e24\u4e2a\u65b9\u5411\u63d2\u503c\u3002\u5ffd\u7565\u8fd9\u4e00\u6b65\uff0c\u9884\u89c8\u4f1a\u51fa\u73b0\u7f3a\u6247\u533a\u3001\u65ad\u8fb9\u6216\u5de6\u53f3\u4e0d\u4e00\u81f4\u3002<\/p>\n
\u7b2c\u56db\u5c42\uff1a\u4e0d\u4f9d\u8d56\u6e32\u67d3\u7ba1\u7ebf\u7684 3D \u5b9e\u65f6\u9884\u89c8<\/h2>\n
\u573a\u666f\u9884\u89c8\u6ca1\u6709\u521b\u5efa Unity Light\uff0c\u4e5f\u4e0d\u8981\u6c42 HDRP \u7684 IES Profile\u3002CPU \u5148\u628a\u5206\u5e03\u70d8\u7119\u4e3a\u4e00\u5f20 360 \u00d7 181<\/code> \u7684 RGBAHalf<\/code> \u67e5\u627e\u7eb9\u7406\uff0cU \u5bf9\u5e94 C \u89d2 0\u00b0 \u5230 360\u00b0\uff0cV \u5bf9\u5e94 \u03b3 \u89d2 0\u00b0 \u5230 180\u00b0\uff0cR \u901a\u9053\u4fdd\u5b58\u76f8\u5bf9\u5cf0\u503c\u5f52\u4e00\u5316\u7684\u5149\u5f3a\u3002<\/p>\n
\"IES
\u706f\u5177\u4f4d\u7f6e\u3001Yaw\u3001Pitch \u548c\u66dd\u5149\u53ef\u4ee5\u5b9e\u65f6\u8c03\u6574\uff1b\u76f8\u673a\u652f\u6301\u73af\u7ed5\u3001\u7f29\u653e\u548c FOV \u4fee\u6539\u3002\u9884\u89c8\u5173\u6ce8\u5149\u6591\u65b9\u5411\u4e0e\u7a7a\u95f4\u5c3a\u5ea6\uff0c\u800c\u4e0d\u662f\u590d\u523b\u67d0\u6761\u9879\u76ee\u6e32\u67d3\u7ba1\u7ebf\u3002<\/figcaption><\/figure>\n
GPU \u4fa7\u901a\u8fc7\u4e00\u6b21 Graphics.Blit<\/code> \u6267\u884c\u5168\u5c4f ray caster\u3002\u6bcf\u4e2a\u50cf\u7d20\u6784\u9020\u76f8\u673a\u5c04\u7ebf\uff0c\u4e0e\u5730\u9762\u5e73\u9762\u6c42\u4ea4\uff0c\u5728\u706f\u5177\u5c40\u90e8\u57fa\u5e95\u4e2d\u6062\u590d C \u548c \u03b3\uff0c\u518d\u67e5\u8be2 IES LUT \u5e76\u8ba1\u7b97 I \u00b7 cos\u03b8 \/ r\u00b2<\/code>\u3002\u5730\u9762\u7f51\u683c\u53ea\u7528\u4e8e\u63d0\u4f9b\u5c3a\u5ea6\u4e0e\u900f\u89c6\u53c2\u7167\u3002\u56e0\u4e3a\u6574\u4e2a\u8fc7\u7a0b\u53ea\u4f9d\u8d56\u4e00\u4e2a\u9690\u85cf Shader \u548c\u4e00\u5f20 512\u00b2 RenderTexture\uff0c\u6240\u4ee5 Built-in\u3001URP \u4e0e HDRP \u7f16\u8f91\u5668\u73af\u5883\u90fd\u80fd\u4f7f\u7528\u540c\u4e00\u5957\u9884\u89c8\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u590d\u7528\u9879\u76ee\u706f\u5149<\/strong><\/p>\n
\u72ec\u7acb\u9884\u89c8\u628a IES \u672c\u8eab\u4e0e\u573a\u666f\u53d8\u91cf\u9694\u79bb\u5f00\u3002\u5b83\u4e0d\u4f1a\u53d7\u5230\u66dd\u5149\u5377\u79ef\u3001\u9634\u5f71\u3001\u6750\u8d28 BRDF\u3001\u4f53\u79ef\u96fe\u6216\u5929\u6c14\u7cfb\u7edf\u5f71\u54cd\uff0c\u56e0\u6b64\u975e\u5e38\u9002\u5408\u5224\u65ad\u201c\u6587\u4ef6\u662f\u5426\u6b63\u786e\u201d\u3002\u6700\u7ec8\u843d\u5730\u4ecd\u9700\u56de\u5230\u76ee\u6807\u6e32\u67d3\u7ba1\u7ebf\u9a8c\u6536\uff0c\u4e24\u8005\u89e3\u51b3\u7684\u662f\u4e0d\u540c\u95ee\u9898\u3002<\/p>\n<\/div>\n
\u7f16\u8f91\uff1a\u4fee\u6539\u7684\u662f\u80fd\u91cf\u5206\u5e03\uff0c\u4e0d\u662f\u706f\u7684 Transform<\/h2>\n
\u7f16\u8f91\u5668\u59cb\u7ec8\u4fdd\u7559\u4e00\u4efd Source\uff0c\u5e76\u5728\u6bcf\u6b21\u53c2\u6570\u53d8\u5316\u65f6\u6df1\u62f7\u8d1d\u51fa Edited Snapshot\u3002\u6240\u6709\u64cd\u4f5c\u90fd\u4f5c\u7528\u4e8e\u574e\u5fb7\u62c9\u8868\uff0c\u56e0\u6b64\u4fdd\u5b58\u540e\u7684\u5149\u675f\u5f62\u72b6\u53ef\u4ee5\u88ab\u5176\u4ed6\u652f\u6301 IES \u7684\u8f6f\u4ef6\u590d\u73b0\uff0c\u800c\u4e0d\u662f\u53ea\u5728\u5f53\u524d Unity \u573a\u666f\u91cc\u751f\u6548\u3002<\/p>\n
\"IES
\u57fa\u7840\u7f16\u8f91\u9762\u5411\u9ad8\u9891\u64cd\u4f5c\uff1a\u6574\u4f53\u4eae\u5ea6\u3001\u5149\u675f\u5c55\u5bbd\uff0c\u4ee5\u53ca\u4e0d\u79fb\u52a8\u706f\u5177 Transform \u7684\u524d\u540e\/\u5de6\u53f3\u5149\u675f\u504f\u79fb\u3002<\/figcaption><\/figure>\n\n\n\n\n\n\n\n\n\n
\u53c2\u6570<\/th>\n\u5b9e\u73b0\u65b9\u5f0f<\/th>\n\u7ed3\u679c<\/th>\n<\/tr>\n<\/thead>\n
Brightness<\/td>\n\u6240\u6709\u91c7\u6837\u4e58\u4ee5\u5168\u5c40 Scale Factor<\/td>\n\u4fdd\u6301\u5f62\u72b6\uff0c\u6539\u53d8\u7edd\u5bf9 candela<\/td>\n<\/tr>\n
Beam Spread<\/td>\n\u6309\u6bd4\u4f8b\u53cd\u5411\u91cd\u91c7\u6837 \u03b3 \u89d2\u8ddd\u79bb<\/td>\n\u5927\u4e8e 1 \u5c55\u5bbd\uff0c\u5c0f\u4e8e 1 \u6536\u7a84<\/td>\n<\/tr>\n
Push Forward \/ Sideways<\/td>\n\u628a\u8f93\u51fa\u65b9\u5411\u65cb\u8f6c\u56de\u6e90\u5206\u5e03\u540e\u91c7\u6837<\/td>\n\u5149\u8f74\u4e0d\u52a8\uff0c\u80fd\u91cf\u5cf0\u503c\u5728 IES \u5185\u504f\u79fb<\/td>\n<\/tr>\n
\u03b3 Remap<\/td>\n\u6309\u5782\u76f4\u89d2\u5e94\u7528 AnimationCurve \u500d\u7387<\/td>\n\u72ec\u7acb\u8c03\u6574\u4e2d\u5fc3\u3001\u80a9\u90e8\u4e0e\u8fdc\u7aef\u80fd\u91cf<\/td>\n<\/tr>\n
C0 \/ C90 Freehand<\/td>\n\u7528\u5f52\u4e00\u5316\u66f2\u7ebf\u8986\u76d6\u6307\u5b9a\u5149\u5ea6\u5e73\u9762<\/td>\n\u76f4\u63a5\u5851\u9020\u4e24\u4e2a\u5173\u952e\u622a\u9762<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4e8c\u7ef4\u5149\u675f\u504f\u79fb\u662f\u5176\u4e2d\u6700\u5bb9\u6613\u88ab\u4f4e\u4f30\u7684\u4e00\u6b65\u3002\u5de5\u5177\u5148\u628a\u76ee\u6807\u504f\u79fb\u91cf\u7ec4\u5408\u6210\u4e00\u4e2a\u5cf0\u503c\u65b9\u5411\uff0c\u518d\u901a\u8fc7 Quaternion \u6784\u9020\u201c\u76ee\u6807\u5cf0\u503c\u5230\u539f\u59cb\u5149\u8f74\u201d\u7684\u65cb\u8f6c\u3002\u5bf9\u8f93\u51fa\u8868\u4e2d\u7684\u6bcf\u4e2a\u65b9\u5411\uff0c\u5148\u505a\u9006\u5411\u65b9\u5411\u6620\u5c04\uff0c\u518d\u56de\u5230\u6e90\u8868\u53cc\u7ebf\u6027\u91c7\u6837\u3002\u8fd9\u6837\u907f\u514d\u76f4\u63a5\u5e73\u79fb\u6570\u7ec4\u9020\u6210\u89d2\u5ea6\u7a7a\u95f4\u53d8\u5f62\u3002<\/p>\n
\u8f74\u5bf9\u79f0\u6587\u4ef6\u53ea\u6709\u4e00\u884c\u6c34\u5e73\u89d2\uff0c\u65e0\u6cd5\u8868\u8fbe\u504f\u5411\u67d0\u4e2a C \u5e73\u9762\u7684\u5149\u675f\u3002\u4e00\u65e6\u53d1\u751f\u975e\u96f6\u4e8c\u7ef4\u504f\u79fb\uff0c\u5de5\u5177\u4f1a\u628a\u5b83\u6269\u5c55\u4e3a 0\u00b0 \u5230 360\u00b0\u3001\u6bcf 10\u00b0 \u4e00\u884c\u7684\u5b8c\u6574\u8868\uff0c\u518d\u8fdb\u884c\u65b9\u5411\u91cd\u91c7\u6837\u3002\u8fd9\u4e2a\u6269\u5c55\u4f1a\u589e\u52a0\u6587\u4ef6\u6570\u636e\u91cf\uff0c\u5374\u662f\u6253\u7834\u8f74\u5bf9\u79f0\u540e\u4fdd\u6301\u4fe1\u606f\u5b8c\u6574\u6240\u5fc5\u987b\u4ed8\u51fa\u7684\u6210\u672c\u3002<\/p>\n
\"IES
\u9ad8\u7ea7\u6a21\u5f0f\u5141\u8bb8\u6309 \u03b3 \u89d2\u505a\u4e58\u6cd5\u91cd\u6620\u5c04\uff0c\u5e76\u76f4\u63a5\u7f16\u8f91 C0\/C90 \u66f2\u7ebf\u3002\u754c\u9762\u6839\u636e\u8f74\u5bf9\u79f0\u3001\u56db\u8c61\u9650\u3001\u53cc\u8fb9\u6216\u5168\u65b9\u5411\u6570\u636e\u81ea\u52a8\u9650\u5236\u4e0d\u53ef\u8868\u8fbe\u7684\u901a\u9053\u3002<\/figcaption><\/figure>\n
\u4fdd\u5b58\uff1a\u4e0d\u53ea\u628a\u6570\u7ec4\u5199\u56de\u6587\u672c<\/h2>\n
\u5e8f\u5217\u5316\u5668\u4fdd\u7559\u539f\u6709\u5173\u952e\u5b57\uff0c\u628a\u5185\u90e8\u7684\u7edd\u5bf9 candela \u5199\u56de\u6587\u4ef6\uff0c\u5e76\u5f3a\u5236 multiplier \u4e3a 1\uff0c\u907f\u514d\u201c\u6570\u7ec4\u5df2\u7ecf\u4e58\u8fc7\u500d\u7387\u3001\u6587\u4ef6\u53c8\u91cd\u590d\u4e58\u4e00\u6b21\u201d\u7684\u4e8c\u6b21\u653e\u5927\u3002\u4fdd\u5b58\u65f6\u8fd8\u53ef\u4ee5\u8ffd\u52a0\u4e00\u6761\u7f16\u8f91\u5386\u53f2\u8bf4\u660e\uff1b\u754c\u9762\u9ed8\u8ba4\u63d0\u4f9b Save As\uff0c\u5e76\u628a\u8986\u76d6\u539f\u6587\u4ef6\u653e\u5728\u660e\u786e\u7684\u5371\u9669\u64cd\u4f5c\u4e2d\u3002<\/p>\n
\u7f16\u8f91\u540e\u7684\u603b\u5149\u901a\u91cf\u901a\u8fc7\u7403\u9762\u79ef\u5206\u91cd\u65b0\u4f30\u8ba1\uff1a<\/p>\n
\u03a6 = \u222b\u2080\u00b2\u03c0 \u222b\u2080\u03c0 I(\u03b3, C) \u00b7 sin(\u03b3) d\u03b3 dC<\/code><\/pre>\n
\u79bb\u6563\u5b9e\u73b0\u6cbf\u76f8\u90bb \u03b3 \u533a\u95f4\u79ef\u5206\uff0c\u5e76\u5bf9\u5df2\u5b58 C \u8303\u56f4\u6c42\u5e73\u5747\uff0c\u518d\u5229\u7528\u8f74\u5bf9\u79f0\u3001\u56db\u8c61\u9650\u6216\u53cc\u8fb9\u5bf9\u79f0\u6269\u5c55\u5230\u5b8c\u6574 2\u03c0\u3002\u7ed3\u679c\u4e58\u4ee5 Ballast Factor\uff0c\u5199\u56de Lumens Per Lamp\u3002\u5cf0\u503c candela \u4e0e\u5cf0\u503c\u89d2\u5ea6\u4e5f\u4f1a\u91cd\u65b0\u904d\u5386\u8ba1\u7b97\uff0c\u4fdd\u8bc1\u6587\u4ef6\u6458\u8981\u4e0e\u7f16\u8f91\u540e\u6570\u636e\u4e00\u81f4\u3002<\/p>\n
\u6a21\u5757\u62c6\u5206\u4e0e\u804c\u8d23<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u6a21\u5757<\/th>\n\u804c\u8d23<\/th>\n\u8bbe\u8ba1\u4ef7\u503c<\/th>\n<\/tr>\n<\/thead>\n
Parser \/ IESData<\/td>\nLM-63 \u8bfb\u53d6\u3001\u5b57\u6bb5\u5f52\u4e00\u5316\u3001\u5cf0\u503c\u7edf\u8ba1<\/td>\n\u8ba9\u6240\u6709\u89c6\u56fe\u5171\u4eab\u540c\u4e00\u4efd\u660e\u786e\u6570\u636e\u6a21\u578b<\/td>\n<\/tr>\n
Plot Renderer<\/td>\nC0\/C90 \u6781\u5750\u6807\u66f2\u7ebf\u3001\u7ebf\u6027\/\u5bf9\u6570\u663e\u793a<\/td>\n\u5feb\u901f\u68c0\u67e5\u89d2\u5ea6\u57df\u5206\u5e03<\/td>\n<\/tr>\n
Light Projector<\/td>\n\u5bf9\u79f0\u6027\u6620\u5c04\u3001\u53cc\u7ebf\u6027\u91c7\u6837\u3001\u5730\u9762\/\u5899\u9762\u7167\u5ea6<\/td>\n\u63d0\u4f9b\u4e0d\u4f9d\u8d56\u573a\u666f\u7684\u7269\u7406\u5f62\u72b6\u53c2\u8003<\/td>\n<\/tr>\n
Scene Previewer + Shader<\/td>\nLUT\u3001\u5168\u5c4f\u5c04\u7ebf\u3001\u76f8\u673a\u548c\u706f\u5177\u4ea4\u4e92<\/td>\n\u8de8\u7ba1\u7ebf\u63d0\u4f9b\u5b9e\u65f6\u7a7a\u95f4\u53cd\u9988<\/td>\n<\/tr>\n
Editor<\/td>\n\u975e\u7834\u574f\u91cd\u91c7\u6837\u3001\u66f2\u7ebf\u8986\u76d6\u3001\u5bf9\u79f0\u6027\u6269\u5c55<\/td>\n\u628a\u827a\u672f\u63a7\u5236\u843d\u5230\u6807\u51c6\u5149\u5ea6\u6570\u636e<\/td>\n<\/tr>\n
Serializer<\/td>\n\u5143\u6570\u636e\u4fdd\u7559\u3001\u6d41\u660e\u79ef\u5206\u3001LM-63 \u56de\u5199<\/td>\n\u5f62\u6210\u53ef\u4ea4\u4ed8\u3001\u53ef\u590d\u7528\u7684\u95ed\u73af<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u6027\u80fd\u4e0e\u5de5\u7a0b\u8fb9\u754c<\/h2>\n
\u8fd9\u662f Editor-only \u5de5\u5177\uff0c\u4e0d\u8fdb\u5165 Player\uff0c\u4e5f\u4e0d\u4f1a\u7ed9\u6e38\u620f\u8fd0\u884c\u65f6\u589e\u52a0 Pass\u3001Draw Call \u6216\u5e38\u9a7b\u7eb9\u7406\u3002\u89e3\u6790\u4e0e\u7f16\u8f91\u7684\u4e3b\u8981\u590d\u6742\u5ea6\u662f O(H \u00d7 V)<\/code>\uff1b\u9ed8\u8ba4 LUT \u7ea6 6.5 \u4e07\u4e2a\u91c7\u6837\uff0c3D \u9884\u89c8\u662f\u4e00\u5f20\u56fa\u5b9a 512\u00b2 RT \u7684\u5168\u5c4f Pass\u3002CPU \u8868\u9762\u6295\u5f71\u9ed8\u8ba4 256\u00b2\uff0c\u6700\u5927\u9650\u5236\u4e3a 1024\u00b2\uff0c\u53ea\u6709\u91cd\u5efa\u65f6\u53d1\u751f\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
\u8fb9\u754c<\/th>\n\u5f53\u524d\u7b56\u7565<\/th>\n\u540e\u7eed\u53ef\u6269\u5c55\u65b9\u5411<\/th>\n<\/tr>\n<\/thead>\n
TILT \u975e NONE<\/td>\n\u5141\u8bb8\u5b89\u5168\u8bfb\u53d6\uff0c\u7981\u6b62\u7f16\u8f91\u4fdd\u5b58<\/td>\n\u5b9e\u73b0\u5b8c\u6574\u503e\u659c\u51e0\u4f55\u4e0e\u5916\u90e8 TILT \u6587\u4ef6\u89e3\u6790<\/td>\n<\/tr>\n
Photometric Type A\/B<\/td>\n\u4fdd\u7559\u6570\u636e\uff1b\u7a7a\u95f4\u9884\u89c8\u6309\u5e38\u7528 Type C \u8bed\u4e49\u89e3\u91ca<\/td>\n\u52a0\u5165 A\/B \u5230 Type C \u7684\u5750\u6807\u8f6c\u6362<\/td>\n<\/tr>\n
\u5f02\u5e38\u6c34\u5e73\u89d2\u8868<\/td>\n\u6807\u51c6 0\/90\/180\/360 \u5bf9\u79f0\uff1b\u5176\u4ed6\u8303\u56f4\u94b3\u5236<\/td>\n\u6309 LM-63 \u8fb9\u754c\u60c5\u51b5\u589e\u52a0\u66f4\u4e25\u683c\u6821\u9a8c<\/td>\n<\/tr>\n
\u9ad8\u5206\u8fa8\u7387 CPU \u6295\u5f71<\/td>\n\u540c\u6b65\u751f\u6210\u5e76\u9650\u5236\u5206\u8fa8\u7387<\/td>\n\u7f16\u8f91\u9632\u6296\u3001Jobs\/Burst \u6216 GPU Compute<\/td>\n<\/tr>\n
\u6700\u7ec8\u753b\u9762\u4e00\u81f4\u6027<\/td>\n\u72ec\u7acb\u66dd\u5149\u4e0e\u7b80\u5316\u5730\u9762\u6a21\u578b<\/td>\n\u589e\u52a0\u76ee\u6807\u7ba1\u7ebf\u9002\u914d\u5c42\u4e0e\u57fa\u51c6\u573a\u666f\u5bf9\u7167<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u7ed3\u8bba<\/h2>\n
\u8fd9\u5957\u5de5\u5177\u7684\u4ef7\u503c\u4e0d\u5728\u4e8e\u591a\u505a\u4e86\u4e00\u4e2a IES \u7f29\u7565\u56fe\uff0c\u800c\u5728\u4e8e\u5efa\u7acb\u4e86\u4e00\u6761\u5b8c\u6574\u3001\u53ef\u9a8c\u8bc1\u7684\u6570\u636e\u94fe\uff1a\u4ece\u6807\u51c6\u6587\u4ef6\u8bfb\u53d6\u65b9\u5411\u5149\u5f3a\uff0c\u7ecf\u8fc7\u5bf9\u79f0\u6027\u6b63\u786e\u7684\u91c7\u6837\u4e0e\u7269\u7406\u7167\u5ea6\u9884\u89c8\uff0c\u518d\u4ee5\u975e\u7834\u574f\u65b9\u5f0f\u91cd\u5851\u5206\u5e03\uff0c\u6700\u540e\u91cd\u7b97\u6d3e\u751f\u91cf\u5e76\u5199\u56de\u6807\u51c6\u683c\u5f0f\u3002\u5b83\u628a\u706f\u5149\u8d44\u4ea7\u4ece\u201c\u53ea\u80fd\u5bfc\u5165\u540e\u8bd5\u6548\u679c\u201d\u7684\u9ed1\u76d2\uff0c\u53d8\u6210\u53ef\u4ee5\u68c0\u67e5\u3001\u6bd4\u8f83\u3001\u7f16\u8f91\u548c\u4ea4\u4ed8\u7684\u6570\u636e\u8d44\u4ea7\u3002<\/p>\n
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