bcfnt.py 文件源码

def extract(self):
        basename_ = os.path.splitext(os.path.basename(self.filename))[0]

        glyph_widths = {}
        for cwdh in self.cwdh_sections:
            for index in range(cwdh['start'], cwdh['end'] + 1):
                glyph_widths[index] = cwdh['data'][index - cwdh['start']]

        glyph_mapping = {}
        for cmap in self.cmap_sections:
            if cmap['type'] == MAPPING_DIRECT:
                for code in range(cmap['start'], cmap['end']):
                    glyph_mapping[unichr(code)] = code - cmap['start'] + cmap['indexOffset']
            elif cmap['type'] == MAPPING_TABLE:
                for code in range(cmap['start'], cmap['end']):
                    index = cmap['indexTable'][code - cmap['start']]
                    if index != 0xFFFF:
                        glyph_mapping[unichr(code)] = index
            elif cmap['type'] == MAPPING_SCAN:
                for code in cmap['entries'].keys():
                    glyph_mapping[code] = cmap['entries'][code]

        # save JSON manifest
        json_file_ = open('%s_manifest.json' % basename_, 'w')
        json_file_.write(json.dumps({
            'fontInfo': self.font_info,
            'textureInfo': {
                'glyph': self.tglp['glyph'],
                'sheetCount': self.tglp['sheetCount'],
                'sheetInfo': {
                    'cols': self.tglp['sheet']['cols'],
                    'rows': self.tglp['sheet']['rows'],
                    'width': self.tglp['sheet']['width'],
                    'height': self.tglp['sheet']['height'],
                    'colorFormat': PIXEL_FORMATS[self.tglp['sheet']['format']]
                }
            },
            'glyphWidths': glyph_widths,
            'glyphMap': glyph_mapping
        }, indent=2, sort_keys=True))
        json_file_.close()

        # save sheet bitmaps
        for i in range(self.tglp['sheetCount']):
            sheet = self.tglp['sheets'][i]
            width = sheet['width']
            height = sheet['height']
            png_data = []
            for y in range(height):
                row = []
                for x in range(width):
                    for color in sheet['data'][x + (y * width)]:
                        row.append(color)

                png_data.append(row)

            file_ = open('%s_sheet%d.png' % (basename_, i), 'wb')
            writer = png.Writer(width, height, alpha=True)
            writer.write(file_, png_data)
            file_.close()