VRUT::ImageCommon Class Reference

Image container with support for many formats readable by wxImage. More...

#include <imagecommon.h>

Inheritance diagram for VRUT::ImageCommon:

List of all members.

Public Member Functions
	ImageCommon ()
	Class constructor.
virtual	~ImageCommon ()
	Class destructor.
virtual bool	IsOk () const
	Is image properly loaded? - Image overload.
virtual bool	Load (const wxString &fname)
	Load image data from file - Image overload.
virtual GLuint	BuildOglTexture () const
virtual bool	HasTransparency () const
	Get true if image has alpha channel - Image overload.
virtual int	GetWidth () const
	Get the widht of the image.
virtual int	GetHeight () const
	Get the height of the image.
Protected Attributes
wxImage *	image
	wxImage instance

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Detailed Description

Image container with support for many formats readable by wxImage.

Definition at line 23 of file imagecommon.h.

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Constructor & Destructor Documentation

ImageCommon::ImageCommon

(

)

Class constructor.

Definition at line 19 of file imagecommon.cpp.

                         : Image(), image((wxImage *)NULL)
{
}

ImageCommon::~ImageCommon

(

)

[virtual]

Class destructor.

Definition at line 24 of file imagecommon.cpp.

{
       SAFE_DELETE(image);
}

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Member Function Documentation

bool ImageCommon::IsOk

(

)

const [virtual]

Is image properly loaded? - Image overload.

Implements VRUT::Image.

Definition at line 30 of file imagecommon.cpp.

{
       return image && image->IsOk();
}

bool ImageCommon::Load

(

const wxString &

fname

)

[virtual]

Load image data from file - Image overload.

Reimplemented from VRUT::Image.

Definition at line 36 of file imagecommon.cpp.

{
       if (Image::Load(fname))
       {
              wxImage im(fname);
              if (im.IsOk())
              {
                     SAFE_DELETE(image);
                     image = new wxImage(im.Mirror(false));
                     return true;
              }
       }
       return false;
}

GLuint ImageCommon::BuildOglTexture

(

)

const [virtual]

Build and bind OpenGL texture from image in CURRENT OpenGL context - Image overload

Returns:

OpenGL ID for texture, GL_ID_NONE if failed

Join RGB and Alpha data

Implements VRUT::Image.

Definition at line 52 of file imagecommon.cpp.

{
       GLuint texID = GL_ID_NONE;
       if (IsOk())
       {
              glEnable(GL_TEXTURE_2D);
              glGenTextures( 1, &texID );
              glBindTexture( GL_TEXTURE_2D, texID );
              glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
              glTexParameteri( GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE );
              if (image->HasAlpha())
              {
                     unsigned pixels = image->GetWidth() * image->GetHeight();
                     GLubyte * rgbaData = new GLubyte[pixels * 4];
                     unsigned char * tmpRGBA = rgbaData;
                     unsigned char * rgbData = image->GetData();
                     unsigned char * alphaData = image->GetAlpha();
                     for (unsigned pix = 0; pix < pixels; pix++)
                     {
                            *tmpRGBA++ = *rgbData++;
                            *tmpRGBA++ = *rgbData++;
                            *tmpRGBA++ = *rgbData++;
                            *tmpRGBA++ = *alphaData++;
                     }
                     gluBuild2DMipmaps(GL_TEXTURE_2D,
                                   4,
                                   image->GetWidth(),
                                   image->GetHeight(),
                                   GL_RGBA,
                                   GL_UNSIGNED_BYTE,
                                   rgbaData);
                     delete [] rgbaData;
              }
              else
                     gluBuild2DMipmaps(GL_TEXTURE_2D,
                                   3,
                                   image->GetWidth(),
                                   image->GetHeight(),
                                   GL_RGB,
                                   GL_UNSIGNED_BYTE,
                                   image->GetData());
       }
       return texID;
}

bool ImageCommon::HasTransparency

(

)

const [virtual]

Get true if image has alpha channel - Image overload.

Implements VRUT::Image.

Definition at line 99 of file imagecommon.cpp.

{
       return IsOk() && (image->HasAlpha() || image->HasMask());
}

int ImageCommon::GetWidth

(

)

const [virtual]

Get the widht of the image.

Implements VRUT::Image.

Definition at line 104 of file imagecommon.cpp.

{
       return (IsOk()?image->GetWidth():0);
}

int ImageCommon::GetHeight

(

)

const [virtual]

Get the height of the image.

Implements VRUT::Image.

Definition at line 109 of file imagecommon.cpp.

{
       return (IsOk()?image->GetHeight():0);
}

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Member Data Documentation

wxImage* VRUT::ImageCommon::image [protected]

wxImage instance

Definition at line 27 of file imagecommon.h.

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

• /cygdrive/d/src/svn/vrut/trunk/core/src/imagecommon.h
• /cygdrive/d/src/svn/vrut/trunk/core/src/imagecommon.cpp