CTF1.h

CTF1.h

typedef uint16_t glyphid_t;
typedef uint16_t shapeid_t;
typedef int16_t sshapeid_t;
typedef struct {...} position_t;

typedef struct CTF1Point {
    position_t x;
    position_t y;
} CTF1Point;

typedef struct CTF1Attachment {
    shapeid_t pointID;
    position_t x;
    position_t y;
} CTF1Attachment;

typedef union CTF1FormationComponent {
    struct {            // A closed contour
        CTF1Point *points;
        uint8_t *flags
    } contour;
    struct {            // A glyph reference
        glyphid_t glyphid;
        CTF1Attachment *attachments;
    } reference;
} CTF1FormationComponent;

typedef struct CTF1Constraint {
    ConstraintType type; // XShift, XInterpolate, YShift, YInterpolate
    shapeid_t correspondedPoints[]; // 2 for Shift, 3 for Interpolate
} CTF1Constraint;

typedef struct CTF1Glyph {
    shapeid_t nComponents;      // Quantity of components in this glyph.
    sshapeid_t *componentArity; // An array of signed integers identifying the types and lengths
                                // of components used to form one glyph. Positive: a contour with
                                // N points; Negative: a reference with N attachments;
    CTF1FormationComponent *components;
    shapeid_t nConstraints;     // Quantity of constraints applied to “points” of this glyph;
    shapeid_t *constraints;
} CTF1Glyph;