ttfGetGlTextDrawData function ttf

Pointer<TtfGlAtlasDrawSequence> ttfGetGlTextDrawData(Pointer<TtfText> text)

Get the geometry data needed for drawing the text.

text must have been created using a TTF_TextEngine from TTF_CreateGLTextEngine().

The positive X-axis is taken towards the right and the positive Y-axis is taken upwards for both the vertex and the texture coordinates, i.e, it follows the same convention used by the OpenGL API. If you want to use a different coordinate system you will need to transform the vertices yourself.

If the text looks blocky use linear filtering.

\param text the text to draw. \returns a NULL terminated linked list of TTF_GLAtlasDrawSequence objects or NULL if the passed text is empty or in case of failure; call SDL_GetError() for more information.

\threadsafety This function should be called on the thread that created the text.

\since This function is available since SDL_ttf 3.3.0.

\sa TTF_CreateGLTextEngine \sa TTF_CreateText

extern SDL_DECLSPEC TTF_GLAtlasDrawSequence * SDLCALL TTF_GetGLTextDrawData(TTF_Text *text)

Implementation

Pointer<TtfGlAtlasDrawSequence> ttfGetGlTextDrawData(Pointer<TtfText> text) {
  final ttfGetGlTextDrawDataLookupFunction = _libTtf
      .lookupFunction<
        Pointer<TtfGlAtlasDrawSequence> Function(Pointer<TtfText> text),
        Pointer<TtfGlAtlasDrawSequence> Function(Pointer<TtfText> text)
      >('TTF_GetGLTextDrawData');
  return ttfGetGlTextDrawDataLookupFunction(text);
}