float4 Class Reference

Representation of an array of 4 floats. Convenient for passing COLOR + alpha, Wpt, or Wvec to OpenGL:. More...

#include <gl_util.H>

List of all members.

Public Member Functions
	operator GLfloat * ()
	Define implicit cast from float4 to GLfloat*:.
Constructors
	float4 (CCOLOR &c, double alpha=1.0)
	float4 (CWpt &p)
	float4 (CWvec &v)
Private Attributes
GLfloat	_data [4]

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Detailed Description

Representation of an array of 4 floats. Convenient for passing COLOR + alpha, Wpt, or Wvec to OpenGL:.

Examples:

// Set current color and alpha: COLOR c = Color::orange4; double a = 0.7; // alpha glColor4fv(float4(c, a));

// Pass a position or direction to define light coordinates, // where the homogeneous coordinate h is 1 or 0, respectively: Wpt p; Wvec v; if (positional_light) glLightfv(GL_LIGHT0, GL_POSITION, float4(p)); // h == 1 else glLightfv(GL_LIGHT0, GL_POSITION, float4(v)); // h == 0

Definition at line 40 of file gl_util.H.

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Constructor & Destructor Documentation

float4::float4 (  CCOLOR &  c, double  alpha = 1.0 )  [inline]

Definition at line 44 of file gl_util.H. References _data.

float4::float4 (  CWpt &  p  )  [inline]

Definition at line 50 of file gl_util.H. References _data.

float4::float4 (  CWvec &  v  )  [inline]

Definition at line 56 of file gl_util.H. References _data.

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Member Function Documentation

float4::operator GLfloat * (   )  [inline]

Define implicit cast from float4 to GLfloat*:. Definition at line 65 of file gl_util.H. References _data.

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Member Data Documentation

GLfloat float4::_data[4] [private]

Definition at line 68 of file gl_util.H. Referenced by float4(), and operator GLfloat *().

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

• gl_util.H

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