TAPsOpenGLSupport.cpp

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/******************************************************************************
TAPsOpenGLSupport.cpp

Design as a base class for OpenGL Drawing and Properties of inherited class.

SUKITTI PUNAK   (09/16/2004)
UPDATE          (10/27/2004)
******************************************************************************/
#include "TAPsOpenGLSupport.hpp"
// Using Inclusion Model (i.e. definitions are included in declarations)
//                       (this name.cpp is included in name.hpp)
// Each friend is defined directly inside its declaration.

BEGIN_NAMESPACE_TAPs__OpenGL
//=============================================================================
// Constructor and Destructor
//-----------------------------------------------------------------------------
// Constructor
OpenGLSupport::OpenGLSupport ( BitmapImage *pcImg, TargaImage *pcImg2 )
    : m_pcImg( pcImg ), m_pcImg2( pcImg2 ), isFacetShading( false ),
      m_acImageFileName( NULL )
{
    EnableTexture();
    //GenerateTexture();

    // Render by GLSL -----------------------------------------------
    #ifdef  TAPs_RENDER_BY_GLSL_DS_FACE_VERTEX
        GlobalGLSLShaderPool::Init();
        ShaderName = GlobalGLSLShaderPool::DEFAULT;
        //ShaderName = GlobalGLSLShaderPool::BRICK;
        //ShaderName = GlobalGLSLShaderPool::DEFAULT_MESH_2DTEXTURE;
        // Set of parameters for shader program
        // ...
    #endif//TAPs_RENDER_BY_GLSL_DS_FACE_VERTEX
    //---------------------------------------------------------------
}
//-----------------------------------------------------------------------------
// Constructor
OpenGLSupport::OpenGLSupport ( TargaImage *pcImg )
    : m_pcImg( NULL ), m_pcImg2( pcImg ), isFacetShading( false ),
      m_acImageFileName( NULL )
{
    EnableTexture();
    //GenerateTexture();

    // Render by GLSL -----------------------------------------------
    #ifdef  TAPs_RENDER_BY_GLSL_DS_FACE_VERTEX
        GlobalGLSLShaderPool::Init();
        ShaderName = GlobalGLSLShaderPool::DEFAULT;
        //ShaderName = GlobalGLSLShaderPool::BRICK;
        //ShaderName = GlobalGLSLShaderPool::DEFAULT_MESH_2DTEXTURE;
        // Set of parameters for shader program
        // ...
    #endif//TAPs_RENDER_BY_GLSL_DS_FACE_VERTEX
    //---------------------------------------------------------------
}
//-----------------------------------------------------------------------------
// Destructor
OpenGLSupport::~OpenGLSupport()
{
    if ( m_acImageFileName ) {
        delete [] m_acImageFileName;
        m_acImageFileName = NULL;
    }
    if ( m_pcImg ) {
        delete m_pcImg;
        m_pcImg  = NULL;
    }
    if ( m_pcImg2 ) {
        delete m_pcImg2;
        m_pcImg2 = NULL;
    }

#ifdef  TAPs_SUPPORT_ASE_FORMAT
    std::vector< Material * >::iterator it = submaterials.begin();
    while ( it != submaterials.end() ) {
        delete *it;
        *it = NULL;
        ++it;
    }
#endif//TAPs_SUPPORT_ASE_FORMAT
}
//=============================================================================
//-----------------------------------------------------------------------------
// To make the material affects the drawing, 
// this fn has to be called before drawing.
//void OpenGLSupport::ApplyMaterial( Enum::Face f )
//{ material.ApplyMaterial( f );    }
//-----------------------------------------------------------------------------
// This fn set the material property to the material parameter,
// but does not apply the material.
//void OpenGLSupport::SetMaterial ( Enum::MaterialType mt )
//{ material.SetMaterial( mt ); }
//=============================================================================
// Helper Functions
//-----------------------------------------------------------------------------
void OpenGLSupport::EnableTexture( GLuint & texName )
{
    if ( !m_pcImg ) return;
    if ( m_pcImg->GetConstPtrToImageData() != NULL ) {
        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        //glGenTextures(1, texName);
        glBindTexture(GL_TEXTURE_2D, texName);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_pcImg->GetWidth(),
                    m_pcImg->GetHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE,
                    m_pcImg->GetConstPtrToImageData() );
        //glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
        glEnable( GL_TEXTURE_2D );
    }
}
//-----------------------------------------------------------------------------
/*
void OpenGLSupport::GenerateTexture()
{
    if ( !m_pcImg ) return;
    if ( m_pcImg->GetConstPtrToImageData() != NULL ) {
        //GLuint texName[1];
        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        glGenTextures(1, texName);
        glBindTexture(GL_TEXTURE_2D, texName[0]);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_pcImg->GetWidth(),
                    m_pcImg->GetHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE,
                    m_pcImg->GetConstPtrToImageData() );
        //glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
        glEnable( GL_TEXTURE_2D );
    }
}
*/
//-----------------------------------------------------------------------------
void OpenGLSupport::EnableTexture()
{
    if ( !m_pcImg ) return;
    if ( m_pcImg->GetConstPtrToImageData() != NULL ) {
        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        glGenTextures(1, texName);
        glBindTexture(GL_TEXTURE_2D, texName[0]);
        //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
        //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
        //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        //glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_pcImg->GetWidth(),
        //          m_pcImg->GetHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE,
        //          m_pcImg->GetConstPtrToImageData() );
        //glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
        glEnable( GL_TEXTURE_2D );
    }
    //*/
    /*
    if ( m_pcImg2->GetConstPtrToImageData() != NULL ) {
        GLuint texName[1];
        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        glGenTextures(1, texName);
        glBindTexture(GL_TEXTURE_2D, texName[0]);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_pcImg2->GetWidth(),
                    m_pcImg2->GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
                    m_pcImg2->GetConstPtrToImageData() );
        //glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
        glEnable( GL_TEXTURE_2D );
    }
    */
}
//-----------------------------------------------------------------------------
// This fn must be called inside the DisplayGL()
void OpenGLSupport::DrawTexture()
{
    if ( !m_pcImg ) return;
    if ( m_pcImg->GetConstPtrToImageData() != NULL ) {
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_pcImg->GetWidth(),
                    m_pcImg->GetHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE,
                    m_pcImg->GetConstPtrToImageData() );
    }
}
//-----------------------------------------------------------------------------
// Draw this 2-D image at a raster position
void OpenGLSupport::DrawImage1 ( Real x, Real y, Real z )
{
    if ( m_pcImg->Available() ) {
        glRasterPos3i( static_cast<int>(x), static_cast<int>(y), static_cast<int>(z) );
        glDrawPixels( m_pcImg->GetWidth(), m_pcImg->GetHeight(), GL_RGB, 
                    GL_UNSIGNED_BYTE, m_pcImg->GetConstPtrToImageData() );
    }
}
//-----------------------------------------------------------------------------
// Draw this 2-D image at a raster position
void OpenGLSupport::DrawImage2 ( Real x, Real y, Real z )
{
    if ( m_pcImg2->Available() ) {
        glRasterPos3i( static_cast<int>(x), static_cast<int>(y), static_cast<int>(z) );
        glDrawPixels( m_pcImg2->GetWidth(), m_pcImg2->GetHeight(), GL_BGRA_EXT, 
                    GL_UNSIGNED_BYTE, m_pcImg2->GetConstPtrToImageData() );
    }
}
//-----------------------------------------------------------------------------
//=============================================================================
// Get/Set Fn(s)
//-----------------------------------------------------------------------------
// Get Material Pointer
//Material * const OpenGLSupport::GetMaterial ()
//{
//  return &material;
//}
//-----------------------------------------------------------------------------
// Get Image File Name
char const * const OpenGLSupport::GetImageFileName () const
{
    return m_acImageFileName;
}
//-----------------------------------------------------------------------------
// Set Image File Name
void OpenGLSupport::SetImageFileName ( char * fileName )
{
    if ( m_acImageFileName ) {
        delete [] m_acImageFileName;
        m_acImageFileName = NULL;
    }
    if ( fileName ) {
        m_acImageFileName = new char[ strlen( fileName ) + 1 ];
        strcpy( m_acImageFileName, fileName );
    }
}
//-----------------------------------------------------------------------------
// Set Texture
void OpenGLSupport::SetTexture( BitmapImage *img )
{
    m_pcImg = img;
    EnableTexture();
}
//-----------------------------------------------------------------------------
//=============================================================================
// Friend Fn(s)
//-----------------------------------------------------------------------------
// put it through ostream
std::ostream &operator<<( std::ostream &output, const OpenGLSupport &o )
{
    output  << "OpenGLSupport Class:"
            << "\n Material:" << o.material << "\n";
    return output;
}
//-----------------------------------------------------------------------------
//=============================================================================
END_NAMESPACE_TAPs__OpenGL
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