PNMTextGlyph

class PNMTextGlyph

A single glyph in a PNMTextMaker.

Inheritance diagram

explicit PNMTextGlyph(double advance)

PNMTextGlyph(PNMTextGlyph const&) = default

int get_advance(void) const

Returns the number of pixels by which the pen should be advanced after rendering this glyph.

int get_bottom(void) const

Returns the y coordinate of the bottommost pixel in the glyph.

int get_height(void) const

Returns the height of the glyph in pixels.

bool get_interior_flag(int x, int y) const

Returns true if the indicated pixel represents a pixel in the interior of a hollow font, false otherwise.

int get_left(void) const

Returns the x coordinate of the leftmost pixel in the glyph.

int get_right(void) const

Returns the x coordinate of the rightmost pixel in the glyph.

int get_top(void) const

Returns the y coordinate of the topmost pixel in the glyph.

double get_value(int x, int y) const

Returns the value of the indicated pixel of the glyph. The result is in the range [0, 1], where 0 indicates the pixel is not part of the glyph, and 1 indicates it is. Intermediate values are used to represent antialiasing.

int get_width(void) const

Returns the width of the glyph in pixels.

void place(PNMImage &dest_image, int xp, int yp, LColor const &fg)

void place(PNMImage &dest_image, int xp, int yp, LColor const &fg, LColor const &interior)

Copies the glyph to the indicated destination image at the indicated origin. It colors the glyph pixels the indicated foreground color, blends antialiased pixels with the appropriate amount of the foreground color and the existing background color, and leaves other pixels alone.

This flavor of place() also fills in the interior color. This requires that determine_interior was called earlier.