Font metric in OpenGL
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07-06-2021 - |
Frage
is there any font metric like in Java (FontMetrics) ?
Ex:
FontMetrics fm = g2.getFontMetrics();
Rectangle2D rect = fm.getStringBounds(node.getText(), g2);
Lösung
That would not depend on OpenGL but on the font providing library, since OpenGL does not have native text rendering.
Andere Tipps
No, text metrics and rasterization is its own complicated problem. A good free library for doing so is FreeType2. With it, you can load a font, get metrics on it, and rasterize it into a bitmap in memory.
Then, using OpenGL, you can store that bitmap in a texture, and use it (with metrics) to render text.
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