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              <html>
  <head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
    <script src="index.js"></script>
    <link rel="stylesheet" type="text/css" href="style.css">


    <script>
      var providedCases =[
        { height: 360, width: 1000 },
        { height: 600, width: 400 },
        { height: 400, width: 600 },
        { height: 400, width: 600 },
        { height: 400, width: 300 },
        { height: 400, width: 300 }
      ];

      var images = [
        { filename: "https://lh3.googleusercontent.com/4psFKP57q5i7UyIRmnXezOj6Gvyi1piET8OzcBU9o3ym-e3lp3iBySgTtcHn2QFH-dG7PiYU218un2Tz59tJNgz2fad6ZNB6Qne1GLuibhdI2uZfYCn4F8gb-9EjHEVQn2R3xWtEs555NAg25k1jG5V6mYVTv7r6CZIxL8qqhvxsFAYQyMrZ9JHN4MM_LtA_sErl-epkHh78BB6vGhfBjLxm6shO5Gv-Hoaje3RcNHB9ZCQPRYdwdB6lw5z7twZAJ1YJyWbXuNeZvaHqHk3yivH-kHSRBAlxvbd_K0aWAVb-GHQvWYtrINPX3YflVvPy9kG7rf73TmwG3WIBfsv1E6GcmKa_Hq5nNwQUKGIuhsKi0i8Hm8JHp01JEk0usDjuWWEtzFDVQh66p47I4sSH3xWeczmoxOHjUjZ7bBBATwW_EJNi1k-1dh6EEHLRNzzGvfTDN0hwaf3Y2M0JOP6fifLokIRu-gy6bhOLQHKNwdlibwBMq7OUwBPF9yVpOoq4nl0bS3gRdaD0HesQaWHMOvS7G35XNK7NEDhqI8PCjaunb0hfkgPHNssV9mBaHojQN5XMnTPeDcm88HYBPmppP6Ar3SNWO2vWRVoqFN_G5ch5cnvw=w3702-h930-no", caption: "Ljotipollur Lake, Iceland", width: 8443, height: 2116},
        { filename: "https://lh3.googleusercontent.com/mNjfnC5p5j4lFVIZcqSxKxGHcbTtY3Vf6fNF_JwcBQ1Oz1Amz35sO3y8QOOUws3UY0Pmi1bR1zecdeKWscfyOlyGUrQJJ-p6wT8DTwgDd5XDUkkb4CjaOpEsL2LlU5d9TXxd1elAUCEIkalphTUkMQrUc2fILmla7BqMB1EoXDeivW6BLgQ_myIdpjLSVuJjzuS3noZq2sJoUxjCwngcqXiURdaiDiNxp_op-BosJDq4Ucm2K0XEH4w6naB353kCkgePR1MSxoqnOxbBwcCVLPuzkrdj1r-XpfDKCJbL22DQ0kKH7jeR4en4NC9wF4IS0MSgnkF8krz0xldyn2vAZIsQ3qCu76jIBxWl7G-mPGfISlft6IvGCepEiiiMgqsvg71_MkBxozxpCYbm5bBoXOtnEGx_fo3KyitJ4jlmKMW3ByCxsFmt7QEn0I6bKNvhfT_miTSNnlQPgIdymht8hMBvfaZK13bXI5AjuxlLVOsyjCiYuhOVd4DvKLXxSWczkjBNDJ1L96srLu06D_0i6-QktHnuKBvNY7pTLwioUHxV45Ly1KrYahDZjdfmK7nAGely5LqiRXXjQe-jS6RHvR210Bs1Ye5XWw5x6iAXKMPbzd4a=w3298-h2198-no", caption: "Seljalandsfoss Waterfall, Iceland", width: 4104, height: 2736},
        { filename: "https://lh3.googleusercontent.com/Tk8xMogufAlYtst-Io0ZBvZacshdUGue03duTohlXt_wJSQfB5MQJJWuGMP1WGICf3h_tPD32d3lFMJ4jZM-hjI9-LjYDwmo_tQB5DWPX6PHWixY001Puqcz7bfZec-b6-t8I7_6gNcrsyJLTbrgoyqBKKtKIndmko1xfyv448uD0ZYc3dNl-iIQEyKn9j3_R4ccccLtgotahW6pp1xaYzJTJkANIPW4tgDegzkPsf2To3_jBwipz9vJQbldvJwGljSwY6OEbbIlFpl7_PxRNY6Env53GbK8BEZRJ4Q7N4Yc2tnOE0WyaxM4xf0CtSH3-jawp1DnBMFu8zTiqLChUxvmmXSs9glBLpMOuVDUSRxFeOmzyrJ_XWNmo5m0bdfRhFib6QN-DNIhMaO-Bmz_RiK8GDmdJJajighCT8m0n1pjC6iFSoc-7duZ0H8dokFR3be_w9PGsRZ8ZJuEx8ks1J367WY1SE1F6vcWHo0kcpWJj9Gpwdwu2yzN3VQ5fY1T0zHNwC2sD4nlQxvTboa5kRZq3gCKhHm11HGM1c30KKdepkAjwhGju6bpMQzRKa_yFIk_HdzM9v1YTVXJlZ2GJX4qJgvSGAVSfrvaDhOyApNdW7aY=w1466-h2198-no", caption: "Svartifoss, Iceland", width: 2736, height: 4104},
        { filename: "https://lh3.googleusercontent.com/vyxzp7lFlWlSqq8AoVY-lnA27UQzVpFbC7lGVbd-hE1WviDda8MIfILKlIKOF7ATnKdOqQESThQUzzFief00MgXgLJvWVtz8WpTvWceBDx4KlUeS3Vlr04chERixhFyO_kUIhdH4uwwcaMYOcIUvbh-7AHrUBQLIgDT9TQelfESJFEnNFEcWn7Uu3xlUorScFuhQ00vD6LvwKWEUPCIuMJ1Yu5oW64IbGjPemCmf7w8EF_6gsRqaTlLQ85ulNcore_IsVL_XlH6JzRPWWID8R8fXaIE8a--r02ydz5hBAQHJqWVaOVy588SXLJKjbQdCIf0CZmXEG0hW5EH0kccpiADqEF8-ymHdlDQ1WlcPSW4rjBNz2471XAe43xa_pY70e-OX1lKW2reSkrXZx7c2VxdNZuLgkP01ewJwZHglB6o8_9TSLt6QfuwDG1DeNBpInQsNgocMkKklfJbzEyJqL6Rc6zUYlUCkEYpUIHvvtL2RLK_0TfKndPP2I9jYcvuW4mTv4Y39Jcb_fwLP7Js3qFPp7sEzOXEGqaI-4fbHpHDUxCupcK27dK_8BN-PA74kE8tdi8YNJyInySNd7fcrcrl55QCGEQuSy9XLKcwOo1lRDm6r=w3298-h2198-no", caption: "Vik, Iceland", width: 4104, height: 2736},
        { filename: "https://lh3.googleusercontent.com/-gdeAOfQ71j3m54YL5qOrc5hNj2DnJPimoEiDz7_lIt2SbjWDeG5mLFyXwRDPsLdonpW_2leVN_5cjbpY9FpWO1GB8XwjUIY9_XotmvsAA4YBV23hfRWhTZ8pym7lQUORtegqIqqFT4MME1qv2GxPsJZey8g9kE-ZQe74jSG1btyzfAiX3ZlUJ6BpseaRLr-sm2iireJF73oZYJnZ2zvV4KMchzcUOMmvCheLGTKNqPLl1vBzZ6IWp2v1EK4jC6TLcabflw_BxXl0BgMikmyLvJtQSEIy_o-jtzsJNIQ0k2hDaqNbA_oQJr3mGcxOauQhmtneSd3fLLK23QXB4muC8PPYniVhs0M0mPFJAB101zewMriqVQm7tCCG2j4gWNiP2LF8NB8w610vV9w4rtJzcWUNffPp0CSiqAfHE2tSa5qOxN9frJ3U2lAg4GctHmd2dWoYw_b1J8SSxaTMWx5JL39jqiZNJr-nubBNgqoGA03r8BWILq2lVLgY05WwC5YzOb7sY1J0PRGTuiWKp4TYTG5SgblIAi7zQneMnqLPJpcGx3rzGCHPeHsOuGjhRj-hqI27nAP8ElcmiTR3KsvIEgvP4B-p3ulJE1aIhtIbwmhQRrr=w335-h223-no", caption: "Landmannalaugar, Iceland", width: 2667, height: 1778},
        { filename: "https://lh3.googleusercontent.com/xsfVIYYZe_XDh8ybvo8xnmm8cw518jBEav8TL9b6Acq8Scjrv4h_A1zutgeH3PPdxztzmT9VOKyWTrYfcZTDb_aMJPOtVb0Lt_gb5NAdyGWatsBd5N8AzVw7mclupCpdh13246Ho_g7NfTp5Ii4YP-rUmj5PoYLk2ejI17C6vPODZDTrZjjggSWtqkxvTDfl4OaigigtXSO4uQaHaKJIqFUumQlYP40irwZncVlX89stljjmCuCRv-UPFyUhFu4HmJlbxMAKZYm4vLIm80xb_0UZjszQe_XqZWNs0WEf-R7ctYyv-G_Wargq9H6_JwQWxwh55W9b9alXUciVyW8mJukb_zDzOQbAeFLXiPYTIrsU48AQQ52lPUn-16w9ChaAalOC2e-zjNd4hV87iInT2-7fnnyEhaWDlqGC6Ry_1e0nGjnQHG7_gM9pCZPWL9vyUWJvuSPJfHEhUB7T4dK4Fy9-GOaXD7YyPm5TFz5BC1YPrD7LgaWhuxLpuYffZ0Df5QAHozVD5pQmEc2gq4I3qxnqW2OgY4bk0Fjd6FPXASg6mBBlE7-Ov_9_O0oTbAWV9mjS7D7cxRMZ2JdgE-6R_Hg1FjL73WP1DbFfnFuA3Wm3FFD7=w3298-h2198-no", caption: "Landmannalaugar, Iceland", width: 2667, height: 1778},
        { filename: "https://lh3.googleusercontent.com/jF8TzmnnLnl1HMKb_uxg0H4dC1ox32zBsqsVw1OkRlXa8wVKdDbuukV3B8wwYCdLhWoP5joWPL5BmCDncmz27N7_sh3oYqPnwR0saadbpI8zsOEV8zPy4NRkpLvND-uS97SM8y7drgU1NcJKmGK66Z7_JkC7s4GgKbG2M5huymKu8VkDiI5wqmbKcRbcnfdlKXi2TuLQXC3N5KtvlEXmgwsoeOgfmm7kpNLwYxjJrmbknvG5FLANbDn25Nr0IU-QTVSU-ugb6vjaVazNn3yV_WzHtUkitZQSKM_B5YUvMM7_akkGyCiS2UwG_aPgHNq0bTuiduKU7cpq6SWPJeRRONocyUwWG3Sm69rvbAUBAgctqUOfnLEaC7oySRNDKtZ-DB3Bk_As-K_nCPT__vTdD3vuI1HPW_miOr419-ORdbVrKo0noMSq71Orh3XsAXCQHVw8QYlei94l1scZ6VXEFIHh71zY0VeMlGPiA3uhIZxeuQMkuy7X5QmfWHprxE_AnkNwL-1QPDKMUwwuhMEJr7GO30GcHvt5fWbmtQ3lFooTlFDpsy-wnFgrV8p6ydpDa3hqGGfMRVSpW1gHJ9YWkHrpwWjHNXsKRIyihmW7Ry4cojE0=w3298-h2198-no", caption: "Thingvellir, Iceland", width: 3835, height: 2557},
        { filename: "https://lh3.googleusercontent.com/KLcAh3S92RE8qIBvVia1LX-UwSgCzAoreq-NXDHngB3Nyx0lUS7cJwgrrbVVLeCfLQaF8fcLokFYxe6CTLga_4M6ztKVON60L64UkoTD6Nvpho--vMfg2MsGXON1l01HgKh2U-WkdhvBms37hY0cm7EHQxGSk2NTpN-BwpjnwcIJwr5wXCBoxpFBIB9RDfHETQxC2OmBimjyMcUNyQSY0IzfvZD_RcwfN3XjJWI4V6DEx7b361lgaAQ45-hJX04UgW-BEpu6wxJe3XfkoOu3_pMSfd4C-r7zA1gM_ine_Hb4ohIGJqPou4lonP2XN3rzqaMFnhcgT3-F2xCaqLRkm1smJkbBxSoLg4HnxgocaWj1ZLetEllxZb6pp1OXWZVMxlYc4IyAKhz9-hWlbiD3vv6xU02PvWnKU2q9UTV3AzTdNvEzVCxAMX33swJL4zlJq93ooJ_pkt7XlmAHUryL8uEqAVA3LjItEBml7r6skh_i1E0ulZgnoaW2kJSJpfTZE_lKkn99HER1OFQHnCJaJfjMwM0cXb_D3oeSyfm7WPiFywbKNp6jLDHRZav8ggOv1kheZs_UReWyoeMzaJ-OrxE-6kLW-pS8nxCGDStNa00oSM3l=w3298-h2198-no", caption: "Everglades National Park, Florida", width: 4104, height: 2736},
        { filename: "https://lh3.googleusercontent.com/5MH2VMF0bRwsCPqIUuOpGw2VjNolNfk8gb0NZv22RB3Y63akLETdiTtD5D7SslE6KbroWS70tTZJ2YM3CFcUplJcSgXonygFCf2l_yihgsNKBS_8xprCPq1268EooEpK17_bJbjWf3AQSzZqz5_XP3-BGjQrH5gka1N2kqJ8aMg9T7XaesZhl12WjiXVvpYN5aTQdh5SYzx4yqSia8AzR8IVng6AmMVhpE5mq3BRocbfKQ8ftP7r1Bp7mK0bYJM5TICoITypTy9rNlNSz8OwT9fkSAXhmBJ1XtJ6eqYwiRKrmuYyLbvINcRTn_r8jW5Air-nAUrX91Owli1zwUdb2wdtki5cbAVBFz_uVji1JOU88S1tU1mryIO1VAOiSaahQIG-prb6qCaVnQ6QhTcnPdl9-9Z123OWHGp0lOIsd7mqYwsWBuXqfFYlSxP6_vu5m97thPxoQMkwXc-WY13M8sORXhqna5dC4dVXE439oGyjmKLoZyD-qtZIeXiz7tmuka_7kaxIXPScVGQCVDezKPqlctah9Dr91Gyy1pmKu1IT0afalXsShvz4_3OjJ8p_sO8zdCx2YI2-uTqKO55x4P6fOYTsj_KsF7Ona7QkQLUjYNM3=w1440-h810-no", caption: "Sipan, Croatia", width: 1440, height: 810},
        { filename: "https://lh3.googleusercontent.com/JmHOrkVoazqZ-Ivcxs-o-c-vYD-VRD9NFy2rBJJVVdatxTb395HByWOPTQY81KnC0HKcrcGdCE2bcNdCnQU7qXfLHgWaFQlneeqSXIVrSbPehqBeP9TjRDnHIXnXOmvuoBR1VUWrQvj2lrdAw9Da00BtrV5UYAbUHHCzAPzTBFJgb5hf-hCWYUfOt8tJyHsPfNpxa0MATQpkzRB7C0nyMLEytV5p88ErAIJJqOOQk5agTNQOKpKijLA7jo6QXxuBZCGEXQePHO6aPZHk6VGSYe1EtAyGTXDF1GQ7aRWJ6vBsZstH7X5GvWtZudXR4DKKrRLtOnc1Yc4mCJrTHv9WjbxV7xtgUy1NWn9LilU4ZjHW0GTtj9ZERcGPfiIaQUd9cwMEBlCgqGXva82ndq9kUSeRE_VfUZGqSyHb4prxs1RsHHk0Ga2sANpIFXEdssgKk232K5MtqQmMcoYbsfu3wSPXNpCEOdkd4lSkQpsVPj9lzKxe_LsvgC4oz93LLgIGM2P6Ex_InPb7AoIcZAIhhtSbnVSag6UBXKThGQ3_BeitcoXdsh6qUxnNl8-mSGq63HOE5hd06p_n_GbWbGj5wJkWJ2Q08bUsqKQhnvPU9i8VlyrA=w339-h194-no", caption: "Dubrovnik, Croatia", width: 5533, height: 3168},
        { filename: "https://lh3.googleusercontent.com/lJNkwk3IJX21Klh1QjSIpr977u-wUVzCNVgSvw6dguH2xL61hZrh3711cYkZiPzgAUZiuXyDyqFQoXuB7AalfAWTpfD4HXH8WV1U5DAO3Tns1Zc8xhyD-0cbh4D5iBD9ueusZO0eNeVit3s6nInqPcNaxhFFZEDaXxGVl1MS-4hUL-6VGYN1Iv4WkYX-RSK7ly8EbkBD2ZcOsm8j9wIrKdhP83ObcmLz7wyUBmhnZBO5JKEAyyjHI5_ZWucqAZWhON5a4kug5bZgEfO2D-8A5T31YI1pqlXsORgFqCIOF7JIEvMQVjK9m4712R9cohtwvgCWL8xu5f-l7aRWyQdFL5r4pTmzafkBxJ8cQtvZm_uMpZlQgCQZt-SWITCfIrIouiIDrFi0LOJ2W8NoHQjp7M5D70mp4GWa_2lqBVkuFhCpn2lOOSvRJent51Ui8YLKcZn0QxIlzcRLwGZQMWpu7M1_0a-_MDu3u83-N1d2bGnXGfeE7bjEs8Ux6i4CHmAAR2s-FLkNz25A6lU0CPcIBcCDfvrw4HUFQMqzDXrsErtWM6KKB7pEvntqmubFkCJ8gBJUAArUtHxazfWGbxV0H3x596EIsC0r3a7YCI5c5twjcUic=w1650-h2198-no", caption: "Artipelag, Sweden", width: 3000, height: 4000},
        { filename: "https://lh3.googleusercontent.com/5G_1NmrZe09rMAlN0h2BY_JDHd-MOlQULvHSDOH7pKFrEt8VwUIFl_scnAgIDElb3IM9l9TV_zumWee0AxJF0aQgeJdhrEZwRQPold22CTE0JyPFcnYbH3pnryDRVGZ4y8AvCJnhBSMAAJK8Z3o6TVm9J-_pH-wG4PYffZM7nPXBG8rWoTDUlzlcv0Jd3G94CfaopmjpKUX5z-T5akosu18t5eWQTb0dA4ceN68ep7kNOnD9-8dWFsSnYhe4BxnFASR92NDpG_ABt1S39OIXIRDEJzKRqRQ3ioomMNpYTTG0efD7R_nPnRq0QbQUwLVyV0zeBTJCnozIku_ZSvTMYhuSGtc1T56vhNHrdoIu-qSw4wrvLmKshiOG3fDt_edxZ3pCCtt8ndh9Rh03uJrEmmynz3Ew_rRsHSNxaPubfiLPJO05zBmDfDG3CLOxNSb40BLFWm2jwGKsiHS4YlCqzjm6lLteK3IaPRI_xAxTOnLzBYdmPCKQmY6H4ryXvHjMC-TlCiPvjEmynijOxvZVkg5ZqmJaxEnauoDDyOnH1IZlRM2Jnna5LgNmv-P4UEUGK5JARzGVZ6EC_t4j0Xed3IzZfUdEtZSjU1vWoLBO2XR4Y72A=w1650-h2198-no", caption: "Century Ave, China", width: 2448, height: 3264},
        { filename: "https://lh3.googleusercontent.com/P--W77-HlkctxyZ2IjFOsyef2GFjjDtPXWIkgUkvbYvDvWvezHu3vst1VEJzGPmcx0mclnx4XOPgsS89EhH0PA_B1NX0K_WhQLAW9pN0kxypiMczzTXbi-MOWppCLNLk5YsI7KLwwOxYdOQ1rvj8M6cj6Nz6s6axAJWAvlW8j6BEfLMGu3GDXzOiIimtmPgJjYRNCT1V5PPT9XD-h-Vf0SXelZlj2sjq5_tbeNPxmrSBYPz0QQ6fbhaERHrOhnDK4Lf4WZLRh45WgJ-rm8x6BfrlA94ndDmfhrehHfU0jyh-5uAsRRNO5ijRaJ9g5TdwHo4TxGXsXXEA48UO-LtIW89H8G9eABiIA_6rOqoPFl8p3UVO7Bhc8dKLLFEMnLAO-4HnM6P31gKpuGE-E7n0P-zwge0lgfIrhVXABG0jBCmmWATcqKoD9H01MB6OnfL44AaS0DHKJTvCXY3QD0RT8xNG81Fa3keG2jjC14NvpnAnWiH2k7YHce4bw01cBn0Z-rZrc1sauhW4BUQL2fldQDTOsvu37-taBoCZzJLZZ2176_fQnbvlP_lML3aaS0EV8oBHkSXp0P0V3_-ZaBLcvXszy-4p71ZwRlJl12uohn0ok-Gs=w2932-h2198-no", caption: "Huangshan, China", width: 4000, height: 3000},
        { filename: "https://lh3.googleusercontent.com/z_Dd9tCnv7vukc8GfzngCg6CuW6dCxcTRyMehoclSalYuTgU9GYocNNod3Gufg7qPS6yiIhSme2rJ6qW32oTS2-n05kdoyCP1hBgTpsXDYRkSajXL2PB0JSWgYqDX5mIrMgRYoMwg-utYUQV3vX7STT-zF5g2RG6AxgRfpwygXpB72TckdtH_0jN8iTxPL-36Q9rE3nOs_C6n6cFKQLJ5w3VmF5edxz2j5D7bAIYtSE_ae0VcfAgPQM5Y1Bnndd0g4au3rI1OepddxZ6LEJcPsj20oDRp91eAR0Pu5KNOu-D7V3J3l-JPRfv_XJgnCv7C0UtAW9X6HGlv425CmE6x5k6kTSYYMl-79LrmepHW3BMCW5DpStj0Y8Q5764_o9BCLaJo0ywXbD4LVpA3zXPvRjn6BJFz6zj3UF5gnP5PvdRPdZh8M7_MrO2ZShlMkbOdYk6pXZM9_QTMTWtk9GC4qat-PyHCjaWHTWacwKYQCHMXcCLGJ5yNyt4B1uJlBY-uYqevS6qJGjSg2JZlRZflynJaswGHdMVSAD4rtpOXW8XmmhzpPofZ08mZe8ly1c86jurxR4yQT_svlmWwblqit7nEhxU2sj-E63NagLo09gPgvmt=w2932-h2198-no", caption: "Huangshan, China", width: 4000, height: 3000}
      ];
      

      $(document).ready(function(){
        var width = $(window).width();
      	$('.grid').css({width: width});
        makeDianPictureGrid(images, width, 400, 10);
        /*Uncomment this block if you want the placekitten version
           with supplied frame values

          makePlacekittenGrid(providedCases, 800, 360, 10);

        */

      });
    </script>
  </head>
  <body>
    <div class='grid'>
    </div>
  </body>
</html>

            
          
!
            
              body {
  margin: 0;
  padding: 0;
}
.grid-item {
  display: inline-block;
  margin: 0;
  position: relative;
  outline: 1px solid #dedede;
}
.image {
  background-color: gray;
}

.grid-item + .grid-item {
  margin-left: 10px;
}

.grid {
  margin: auto;
}

.row {
  font-size: 0;
  margin-bottom: 10px;
}

figcaption {

  box-sizing: border-box;
  padding: 20px 10px;
  width: 100%;
  display: inline-block;
  position: absolute;
  bottom: 0;
  left: 0;
  color: white;
  background-color: rgba(96, 125, 139, 0.74);
  font-family: system, -apple-system, "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", "Lucida Grande", sans-serif;
  font-size: 12px;
}
            
          
!
            
              /**
* @param {Array<Object>} array of frame objects with height/width properties
* @param {number} width of the containing element, in pixels
* @param {number} maximum height of each row of images, in pixels
* @param {number} spacing between images in a row, in pixels
* @returns {Array<Array<Object>>} array of rows of resized frames
*/
function layoutFrames(images, containerWidth, maxRowHeight, spacing) {

  var currentRowHeight;
  var currentRowWidth = 0;
  var grid = [];
  var row = [];
  var resizedFrames;

  //resize all images to be within width, height constraints
  resizedFrames = _.map(images, fit.bind(this, containerWidth, maxRowHeight));

  _.each(resizedFrames, function(frame){

    if (row.length === 0) {
      currentRowHeight = frame.height; //record first image's height
    }
    else {
      frame = scaleHeight(frame, currentRowHeight);
    }

    currentRowWidth += frame.width;
    row.push(frame);

    if (currentRowWidth < containerWidth) {
      currentRowWidth += spacing; //account for spacing
    }
    else {

      var frameGutterWidthTotal = (row.length - 1) * spacing; //account for spacing

      // row is full or overflowing, squeeze down to container width
      row  = _.map(row, function(frame){
        var ratio = (containerWidth - frameGutterWidthTotal)/
                    (currentRowWidth - frameGutterWidthTotal);
        return scaleWidth(frame, frame.width * ratio);
    });

    grid.push(row);

    //clear for next row
    row = [];
    currentRowWidth = 0;
  }
});

//push the last row if it contains contents
if (row.length) {
  grid.push(row);
}

return grid;
}

/* helper functions */

//returns scaled frame based on a target height
function scaleHeight(frame, targetHeight) {

  var width = targetHeight/frame.height * frame.width;
  return ({height: targetHeight, width: width});
}

//returns scaled frame based on a target width
function scaleWidth(frame, targetWidth) {
  var height = targetWidth/frame.width * frame.height;
  return ({height: height, width: targetWidth});
}

function fit(maxWidth, maxHeight, frame) {
  if (frame.width > maxWidth && frame.height > maxHeight) {
    frame = scaleHeight(frame, maxHeight);
    if (frame.width > maxWidth) {
      frame = scaleWidth(frame, maxWidth);
    }
  }
  else if (frame.width > maxWidth) {
    frame = scaleWidth(frame, maxWidth);
  }
  else if (frame.height > maxHeight) {
    frame = scaleHeight(frame, maxHeight);
  }
  return frame;
}

var gridItem = [
  '<figure class="grid-item">',
    '<img class = "image" src = <%= filename %> width= <%= width %> height= <%= height %> >',
    '<figcaption width= <%= width %>><%= caption %> </figcaption>',
  '</figure>'
].join('\n');

function makeDianPictureGrid(images, containerWidth, maxHeight, spacing){
  var grid = layoutFrames(images, containerWidth, maxHeight, spacing);
  var index = 0;

  var template = _.template(gridItem);

  _.each(grid, function(row){
    var $row = $('<div>').addClass('row');
    $('.grid').append($row);

    _.each(row, function(image) {
      var $gridItem = $(template(_.extend(image,{
        filename: images[index].filename,
        caption: images[index].caption
        })
      ));
      $row.append($gridItem);
      index++;
    });
  });
}

function makePlacekittenGrid(images, containerWidth, maxHeight, spacing){
  var grid = layoutFrames(images, containerWidth, maxHeight, spacing );

  var template = _.template(gridItem);

  _.each(grid, function(row){
    var $row = $('<div>').addClass('row');
    $('.grid').append($row);

    _.each(row, function(image) {
      var filename = ['http://placekitten.com', Math.round(image.width), Math.round(image.height)].join('/');
      var $gridItem = $(template({
        width: Math.round(image.width),
        height: Math.round(image.height),
        filename:  filename,
        caption: "A kitten"
      }));
      $row.append($gridItem);
    });
  });
}


            
          
!
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