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How can I get the coordinates of the output of a truetype font. I need to write a function like so:

struct CartesianCoord{float x,float y};
CartesionCoord *printfont(const char *filename,char ch, int &len)
    /*Read the font in filename.ttf and convert it to a set of vertices describing the resulting shape. Do this for the letter 'ch' and return an array of coordinates describing it. len stores the length of this returned array.*/

I think I need to know more about .ttf file formats but I do not know where to begin! (Yes I have tried googling it)

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