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OGLFT::Polygonal::VertexInfo Struct Reference

#include <OGLFT.h>

List of all members.

Public Methods
	VertexInfo (ColorTess *color_tess=0, TextureTess *texture_tess=0)
	VertexInfo (FT_Vector *ft_v, ColorTess *color_tess=0, TextureTess *texture_tess=0)
	VertexInfo (double p[2], ColorTess *color_tess=0, TextureTess *texture_tess=0)
	VertexInfo (double x, double y, ColorTess *color_tess=0, TextureTess *texture_tess=0)
void	normalize (void)
Public Attributes
double	v_ [3]
ColorTess *	color_tess_
TextureTess *	texture_tess_

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Detailed Description

VertexInfo is a private class which is used by the decomposition and tessellation routines to store the vertices and other data of the glyph's outline. Because of the "impedance mismatch" between the crazy 26.6 fixed point format of the FreeType library (well, don't blame them; look at what they have to work with) and OpenGL's preference for double precision, this simple vector has two constructors: one for 26.6 format and one for direct floating point.

VertexInfo also contains (optional) pointers to objects which implement the ColorTess and TextureTess interfaces.

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Constructor & Destructor Documentation

OGLFT::Polygonal::VertexInfo::VertexInfo (  ColorTess *    color_tess = 0, TextureTess *    texture_tess = 0 )  [inline]

Default constructor just initializes Vertex to zero. Parameters: color_tess  optional color tesselation object. texture_tess  optional texture tesselation object.

OGLFT::Polygonal::VertexInfo::VertexInfo (  FT_Vector *    ft_v, ColorTess *    color_tess = 0, TextureTess *    texture_tess = 0 )  [inline]

Construct a Vertex from a point in a FreeType contour. Parameters: ft_v  a FreeType FT_Vector, normally passed into the the decomposition callbacks. color_tess  optional color tesselation object. texture_tess  optional texture tesselation object.

OGLFT::Polygonal::VertexInfo::VertexInfo (  double    p[2], ColorTess *    color_tess = 0, TextureTess *    texture_tess = 0 )  [inline]

Construct a Vertex from a 2D point. Parameters: p  2D array of doubles. color_tess  optional color tesselation object. texture_tess  optional texture tesselation object.

OGLFT::Polygonal::VertexInfo::VertexInfo (  double    x, double    y, ColorTess *    color_tess = 0, TextureTess *    texture_tess = 0 )  [inline]

Construct a Vertex from a 2D point. Parameters: x  the X coordinate. y  the Y coordinate. color_tess  optional color tesselation object. texture_tess  optional texture tesselation object.

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Member Function Documentation

void OGLFT::Polygonal::VertexInfo::normalize (  void    )  [inline]

Treat the Vertex like a vector: Normalize its length in the usual way.

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Member Data Documentation

ColorTess* OGLFT::Polygonal::VertexInfo::color_tess_

The user can provide a ColorTess object which computes a color for each tesselated vertex.

TextureTess* OGLFT::Polygonal::VertexInfo::texture_tess_

The user can provide a TextureTess object which computes texture coordinates for each tesselated vertex.

double OGLFT::Polygonal::VertexInfo::v_[3]

Why is this double precision? Because the second argument to the routine gluTessVertex is a pointer to an array of doubles. Otherwise, we could use single precision everywhere.

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The documentation for this struct was generated from the following file:

• OGLFT.h

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