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Libgdx Cross-platform Game Development Cookbook by Alberto Cejas Sánchez, David Saltares Márquez

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Generating and rendering bitmap fonts

While you may be most familiar with TrueType Fonts (TTF), they are not the best supported approach when it comes to font rendering in games; this also applies to the Libgdx environment. Rendering text from a TTF is a costly process because it involves rasterizing the vector representation of the font onto a texture.

Instead, TTF files are baked into textures or bitmap fonts using an offline tool, such as Hiero, as you will see later in this recipe. This way, the graphics system only needs to load a texture and the location of each contained character. Rendering text becomes a lot simpler: rendering multiple regions using additional logic for correct character positioning. Don't worry, Libgdx does all of this ...

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