private static bool TryGetCharacterFromFontFile(uint unicode, TMP_FontAsset fontAsset, out TMP_Character character)
{
character = null;
// Initialize Font Engine library if not already initialized
if (k_IsFontEngineInitialized == false)
{
FontEngineError error = FontEngine.InitializeFontEngine();
if (error == 0)
{
k_IsFontEngineInitialized = true;
}
}
// Load the font face for the given font asset.
// TODO: Add manager to keep track of which font faces are currently loaded.
FontEngine.LoadFontFace(fontAsset.sourceFontFile, fontAsset.faceInfo.pointSize);
Glyph glyph = null;
uint glyphIndex = FontEngine.GetGlyphIndex(unicode);
// Check if glyph is already contained in the font asset as the same glyph might be referenced by multiple character.
if (fontAsset.glyphLookupTable.TryGetValue(glyphIndex, out glyph))
{
character = fontAsset.AddCharacter_Internal(unicode, glyph);
return(true);
}
GlyphLoadFlags glyphLoadFlags = ((GlyphRasterModes)fontAsset.atlasRenderMode & GlyphRasterModes.RASTER_MODE_HINTED) == GlyphRasterModes.RASTER_MODE_HINTED ? GlyphLoadFlags.LOAD_RENDER : GlyphLoadFlags.LOAD_RENDER | GlyphLoadFlags.LOAD_NO_HINTING;
if (FontEngine.TryGetGlyphWithUnicodeValue(unicode, glyphLoadFlags, out glyph))
{
// Add new character to font asset (if needed)
character = fontAsset.AddCharacter_Internal(unicode, glyph);
return(true);
}
return(false);
}
