GLImage Class Reference

#include <glImage.h>

Public Member Functions
	GLImage ()
	GLImage (const std::vector< Image< byte > > &image)
	GLImage (const Image< byte > &image)
	~GLImage ()
void	setImage (const Image< byte > &image)
void	setImage (const std::vector< Image< byte > > &image)
void	unsetImage ()
bool	bindTexture () const
void	draw (float x, float y, float sx=1.f, float sy=1.f) const
	operator bool () const
float	getSizeX () const
float	getSizeY () const

Protected Attributes
GLuint	m_gltexture
int	m_sx
int	m_sy
float	m_tx
float	m_ty
bool	m_Initialized

Detailed Description

Definition at line 9 of file glImage.h.

Constructor & Destructor Documentation

GLImage::GLImage ( )

inline

Definition at line 11 of file glImage.h.

: m_Initialized(false) {}

GLImage::GLImage ( const std::vector< Image< byte > > &  image )

inline

Definition at line 12 of file glImage.h.

References setImage().

                                               : m_Initialized(false)
    {
        setImage(image);
    }

GLImage::GLImage ( const Image< byte > &  image )

inline

Definition at line 17 of file glImage.h.

References setImage().

                                  : m_Initialized(false)
    {
        setImage(image);
    }

GLImage::~GLImage ( )

inline

Definition at line 22 of file glImage.h.

References unsetImage().

    {
        unsetImage();
    }

Member Function Documentation

bool GLImage::bindTexture ( ) const

inline

Definition at line 79 of file glImage.h.

References m_gltexture, and m_Initialized.

Referenced by draw().

    {
        if(m_Initialized) glBindTexture(GL_TEXTURE_2D, m_gltexture);
        return m_Initialized;
    }

void GLImage::draw ( float  x, float  y, float  sx = 1.f, float  sy = 1.f  ) const

inline

Definition at line 85 of file glImage.h.

References bindTexture(), m_sx, m_sy, m_tx, and m_ty.

Referenced by Dataset::draw().

    {
        if(!bindTexture()) return;
        float bx = x + sx*m_sx;
        float by = y + sy*m_sy;
        glBegin(GL_QUADS);// Begin Drawing The Textured Quad
        glTexCoord2f(0.0f, 0.0f); glVertex2f(  x,  y);
        glTexCoord2f(m_tx, 0.0f); glVertex2f( bx,  y);
        glTexCoord2f(m_tx, m_ty); glVertex2f( bx, by);
        glTexCoord2f(0.0f, m_ty); glVertex2f(  x, by);
        glEnd();
    }

float GLImage::getSizeX ( ) const

inline

Definition at line 99 of file glImage.h.

References m_sx.

{ return m_sx; }

float GLImage::getSizeY ( ) const

inline

Definition at line 100 of file glImage.h.

References m_sy.

{ return m_sy; }

GLImage::operator bool ( ) const

inline

Definition at line 98 of file glImage.h.

References m_Initialized.

{ return m_Initialized; }

void GLImage::setImage ( const Image< byte > &  image )

inline

Definition at line 27 of file glImage.h.

References Image< T >::getData(), Image< T >::getSizeX(), Image< T >::getSizeY(), Image< T >::insert(), m_gltexture, m_Initialized, m_sx, m_sy, m_tx, m_ty, power2(), and unsetImage().

Referenced by Dataset::draw(), and GLImage().

    {
        unsetImage();
        m_sx = image.getSizeX();
        m_sy = image.getSizeY();
        dword p2x = power2(m_sx);
        dword p2y = power2(m_sy);
        m_tx = float(m_sx)/p2x;
        m_ty = float(m_sy)/p2y;
        Image<byte> p2i(p2x, p2y);
        p2i.insert(image);
        glGenTextures(1, &m_gltexture);// Create One Texture
// Create Linear Filtered Texture
        glBindTexture(GL_TEXTURE_2D, m_gltexture);
        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
        glTexImage2D(GL_TEXTURE_2D, 0, 3, p2x, p2y, 0,
                     GL_LUMINANCE, GL_UNSIGNED_BYTE, p2i.getData());
        m_Initialized = true;
    }

void GLImage::setImage ( const std::vector< Image< byte > > &  image )

inline

Definition at line 48 of file glImage.h.

References Image< T >::getData(), Image< T >::getSizeX(), Image< T >::getSizeY(), Image< T >::insert(), Image< T >::interleave(), m_gltexture, m_Initialized, m_sx, m_sy, m_tx, m_ty, power2(), and unsetImage().

    {
        unsetImage();
        if(image.empty()) return;
        Image<byte> combimg;
        combimg.interleave(image, 3);
        m_sx = combimg.getSizeX()/3; //image[0].getSizeX();
        m_sy = combimg.getSizeY(); //image[0].getSizeY();
        dword p2x = power2(m_sx);
        dword p2y = power2(m_sy);
        m_tx = float(m_sx)/float(p2x);
        m_ty = float(m_sy)/float(p2y);
        Image<byte> p2i(p2x*3, p2y);
        p2i.insert(combimg);
        glGenTextures(1, &m_gltexture);// Create One Texture
// Create Linear Filtered Texture
        glBindTexture(GL_TEXTURE_2D, m_gltexture);
        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
        glTexImage2D(GL_TEXTURE_2D, 0, 3, p2x, p2y, 0, GL_RGB,
                     GL_UNSIGNED_BYTE, p2i.getData());
        m_Initialized = true;
    }

void GLImage::unsetImage ( )

inline

Definition at line 72 of file glImage.h.

References m_gltexture, and m_Initialized.

Referenced by Dataset::draw(), setImage(), and ~GLImage().

    {
        if(!m_Initialized) return;
        glDeleteTextures(1, &m_gltexture);
        m_Initialized = false;
    }

Member Data Documentation

GLuint GLImage::m_gltexture

protected

Definition at line 103 of file glImage.h.

Referenced by bindTexture(), setImage(), and unsetImage().

bool GLImage::m_Initialized

protected

Definition at line 106 of file glImage.h.

Referenced by bindTexture(), operator bool(), setImage(), and unsetImage().

int GLImage::m_sx

protected

Definition at line 104 of file glImage.h.

Referenced by draw(), getSizeX(), and setImage().

int GLImage::m_sy

protected

Definition at line 104 of file glImage.h.

Referenced by draw(), getSizeY(), and setImage().

float GLImage::m_tx

protected

Definition at line 105 of file glImage.h.

Referenced by draw(), and setImage().

float GLImage::m_ty

protected

Definition at line 105 of file glImage.h.

Referenced by draw(), and setImage().

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

• src/glImage.h