libmoldeo (Moldeo 1.0 Core)
1.0
libmoldeo is the group of objects and functions that executes the basic operations of Moldeo 1.0 Platform.
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Render text as a grayscale raster image. More...
#include <moOGLFT.h>
Public Member Functions | |
Grayscale (const char *filename, float point_size=12, FT_UInt resolution=100) | |
Grayscale (FT_Face face, float point_size=12, FT_UInt resolution=100) | |
~Grayscale (void) | |
Public Member Functions inherited from OGLFT::Raster | |
Raster (const char *filename, float point_size=12, FT_UInt resolution=100) | |
Raster (FT_Face face, float point_size=12, FT_UInt resolution=100) | |
virtual | ~Raster (void) |
void | setCharacterRotationZ (GLfloat character_rotation_z) |
GLfloat | characterRotationZ (void) const |
double | height (void) const |
BBox | measure (unsigned char c) |
BBox | measure (const char *s) |
Public Member Functions inherited from OGLFT::Face | |
Face (const char *filename, float point_size=12, FT_UInt resolution=100) | |
Face (FT_Face face, float point_size=12, FT_UInt resolution=100) | |
virtual | ~Face (void) |
bool | isValid (void) const |
bool | addAuxiliaryFace (const char *filename) |
bool | addAuxiliaryFace (FT_Face face) |
void | setCompileMode (enum GlyphCompileMode compile_mode) |
enum GlyphCompileMode | compileMode (void) const |
void | setPointSize (float point_size) |
float | pointSize (void) |
void | setResolution (FT_UInt resolution) |
FT_UInt | resolution (void) |
void | setAdvance (bool advance) |
bool | advance (void) const |
void | setForegroundColor (GLfloat red=0.0, GLfloat green=0.0, GLfloat blue=0.0, GLfloat alpha=1.0) |
void | setForegroundColor (const GLfloat foreground_color[4]) |
GLfloat | foregroundRed (void) const |
GLfloat | foregroundGreen (void) const |
GLfloat | foregroundBlue (void) const |
GLfloat | foregroundAlpha (void) const |
void | setBackgroundColor (GLfloat red=1.0, GLfloat green=1.0, GLfloat blue=1.0, GLfloat alpha=0.0) |
void | setBackgroundColor (const GLfloat background_color[4]) |
GLfloat | backgroundRed (void) const |
GLfloat | backgroundGreen (void) const |
GLfloat | backgroundBlue (void) const |
GLfloat | backgroundAlpha (void) const |
void | setCharacterRotationReference (unsigned char c) |
void | setStringRotation (GLfloat string_rotation) |
GLfloat | stringRotation (void) const |
void | setHorizontalJustification (enum HorizontalJustification horizontal_justification) |
enum HorizontalJustification | horizontalJustification (void) const |
void | setVerticalJustification (enum VerticalJustification vertical_justification) |
enum VerticalJustification | verticaljustification (void) const |
void | setCharacterDisplayLists (const DisplayLists &character_display_lists) |
DisplayLists & | characterDisplayLists (void) |
virtual BBox | measureRaw (const char *s) |
GLuint | compile (const char *s) |
GLuint | compile (unsigned char c) |
void | draw (const char *s) |
void | draw (unsigned char c) |
void | draw (GLfloat x, GLfloat y, unsigned char c) |
void | draw (GLfloat x, GLfloat y, GLfloat z, unsigned char c) |
void | draw (GLfloat x, GLfloat y, const char *s) |
void | draw (GLfloat x, GLfloat y, GLfloat z, const char *s) |
int | ascender (void) |
int | descender (void) |
Additional Inherited Members | |
Public Types inherited from OGLFT::Face | |
enum | HorizontalJustification { LEFT, ORIGIN, CENTER, RIGHT } |
enum | VerticalJustification { BOTTOM, BASELINE, MIDDLE, TOP } |
enum | GlyphCompileMode { COMPILE, IMMEDIATE } |
Protected Types inherited from OGLFT::Face | |
typedef std::map< FT_UInt, GLuint > | GlyphDLists |
Type of the cache of defined glyph to display list mapping. More... | |
typedef GlyphDLists::const_iterator | GDLCI |
typedef GlyphDLists::iterator | GDLI |
Protected Attributes inherited from OGLFT::Raster | |
GLfloat | character_rotation_z_ |
Protected Attributes inherited from OGLFT::Face | |
std::vector< FaceData > | faces_ |
bool | valid_ |
Did a font load OK? More... | |
enum GlyphCompileMode | compile_mode_ |
Glyph display list creation mode. More... | |
float | point_size_ |
Nominal point size. More... | |
FT_UInt | resolution_ |
Display resolution in pixels per inch. More... | |
bool | advance_ |
Does rendering text affect the MODELVIEW matrix? More... | |
GLfloat | foreground_color_ [4] |
GLfloat | background_color_ [4] |
Background color (what modes would use this?) More... | |
enum HorizontalJustification | horizontal_justification_ |
PHIGS-like horizontal positioning of text. More... | |
enum VerticalJustification | vertical_justification_ |
PHIGS-like vertical positioning of text. More... | |
GLfloat | string_rotation_ |
Rotate an entire string in the Z plane. More... | |
FT_UInt | rotation_reference_glyph_ |
FT_Face | rotation_reference_face_ |
The rotation reference character could be in any face. More... | |
GLfloat | rotation_offset_y_ |
GlyphDLists | glyph_dlists_ |
Cache of defined glyph display lists. More... | |
DisplayLists | character_display_lists_ |
Render text as a grayscale raster image.
The Grayscale style is similar to the Monochrome style. FreeType is used to rasterize a glyph and this is then drawn on the screen using glDrawPixels
. The FreeType rasterization is done in anti-aliased mode. When Grayscale draws the glyph image, the resulting text is blended smoothly from the foreground color to the background color. The background of the glyph is opaque, so this style works best over a solid background.
Note: you must call
before drawing in order for grayscale glyphs to be rendered properly.
Another note: It is helpful to have the option GL_RASTER_POSITION_UNCLIPPED_IBM
available if you intend to draw text at MODELVIEW based positions, otherwise if the initial text position is off the screen, the entire image is clipped.
OGLFT::Grayscale::Grayscale | ( | const char * | filename, |
float | point_size = 12 , |
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FT_UInt | resolution = 100 |
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) |
filename | the filename which contains the font face. |
point_size | the initial point size of the font to generate. A point is essentially 1/72th of an inch. Defaults to 12. |
resolution | the pixel density of the display in dots per inch (DPI). Defaults to 100 DPI. |
Definition at line 1684 of file moOGLFT.cpp.
OGLFT::Grayscale::Grayscale | ( | FT_Face | face, |
float | point_size = 12 , |
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FT_UInt | resolution = 100 |
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) |
face | open FreeType FT_Face. |
point_size | the initial point size of the font to generate. A point is essentially 1/72th of an inch. Defaults to 12. |
resolution | the pixel density of the display in dots per inch (DPI). Defaults to 100 DPI. |
Definition at line 1689 of file moOGLFT.cpp.
OGLFT::Grayscale::~Grayscale | ( | void | ) |
The destructor doesn't do anything in particular.
Definition at line 1693 of file moOGLFT.cpp.