{
    "mode": "perldoc",
    "parameter": "Font::TTF::Vmtx",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/perldoc/Font%3A%3ATTF%3A%3AVmtx/json",
    "generated": "2026-06-13T19:07:06Z",
    "sections": {
        "NAME": {
            "content": "Font::TTF::Vmtx - Vertical Metrics\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "Contains the advance height and top side bearing for each glyph. Given the compressability of\nthe data onto disk, this table uses information from other tables, and thus must do part of its\noutput during the output of other tables\n",
            "subsections": []
        },
        "INSTANCE VARIABLES": {
            "content": "The vertical metrics are kept in two arrays by glyph id. The variable names do not start with a\nspace\n\nadvance\nAn array containing the advance height for each glyph\n\ntop An array containing the top side bearing for each glyph\n",
            "subsections": []
        },
        "METHODS": {
            "content": "$t->read\nReads the vertical metrics from the TTF file into memory\n\n$t->out($fh)\nWrites the metrics to a TTF file. Assumes that the \"vhea\" has updated the numVMetrics from here\n",
            "subsections": []
        },
        "BUGS": {
            "content": "None known\n",
            "subsections": []
        },
        "AUTHOR": {
            "content": "Martin Hosken <http://scripts.sil.org/FontUtils>.\n",
            "subsections": []
        },
        "LICENSING": {
            "content": "Copyright (c) 1998-2016, SIL International (http://www.sil.org)\n\nThis module is released under the terms of the Artistic License 2.0. For details, see the full\ntext of the license in the file LICENSE.\n",
            "subsections": []
        }
    },
    "summary": "Font::TTF::Vmtx - Vertical Metrics",
    "flags": [],
    "examples": [],
    "see_also": []
}