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BasicNodes.cpp

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#include "BasicNodes.h"
#include "GLUTCore.h"
#include <stdio.h>
#define STRUBUFFERSIZE 512

float ShaderNode::m_fTimePerCheck = 1.0f;

void ShaderNode::Render()
{
    if( m_sShaderName.length() )
    {
        S.ActivateShader( vsnIs, vsnFs, vfnFs );
        NodeObject::Render();
        S.DeactivateShader();
    } else
        NodeObject::Render();
}

void ShaderNode::Update( const float fDtime )
{
    m_fTimeSinceLastCheck += fDtime;
    if( m_fTimeSinceLastCheck > m_fTimePerCheck && m_sShaderName.length() )
    {
        S.CheckForNewer( m_sShaderName.c_str() );
        m_fTimeSinceLastCheck = 0.0f;
    }
    NodeObject::Update( fDtime );
}

REGISTER_CLASS( ShaderNode );

TextureNode::TextureNode( const string & sName ) : NodeObject( sName )
{
    if( sName.length() > 8 )
        if( sName.substr( 0, 7 ).compare( "DYNTEX:" ) == 0 )
        {
            string sP = sName.substr( 7 );
            int iWidth, iHeight;
            TextureType tex;
            char tt[32];
            if( sscanf( sP.c_str(), "%d,%d,%30s", &iWidth, &iHeight, tt ) == 3 )
            {
                string stype = tt;
                if( stype.substr(0,10).compare( "GRAYSCALE," ) == 0 )
                    tex = TTGRAYSCALE;
                else if( stype.substr(0,4).compare( "RGB," ) == 0 )
                    tex = TTRGB;
                else if( stype.substr(0,5).compare( "RGBA," ) == 0 )
                    tex = TTRGBA;
                else if( stype.substr(0,7).compare( "RGBA16," ) == 0 )
                    tex = TTRGBA16;
                else if( stype.substr(0,7).compare( "RGBA32," ) == 0 )
                    tex = TTRGBA32;
                else
                    return;
                T.MakeDynamicTexture( iWidth, iHeight, tex );
            }
            return;
        }

    T.LoadTextureFile( sName.c_str() );
}

void TextureNode::Render()
{
    T.ActivateTexture();
    NodeObject::Render();
    T.DeactivateTexture();
}

REGISTER_CLASS( TextureNode );

TextureSetNode::TextureSetNode( const string & sName )
 : NodeObject( sName )
{
    //No code
}

void TextureSetNode::Render()
{
    unsigned i;
    for( i = 0; i < m_vAllTextures.size(); ++i )
        m_vAllTextures[i].T.ActivateTexture( i );
    NodeObject::Render();
    for( i = 0; i < m_vAllTextures.size(); ++i )
        m_vAllTextures[i].T.DeactivateTexture( i );
}

REGISTER_CLASS( TextureSetNode );

void RFBufferNode::ConfigureForRun( vector< TextureNode *> & vTextures, bool bNeedDepth )
{
    m_vAllCoreTextures.clear();
    m_vAllTextures = vTextures;
    B.Setup( bNeedDepth );
    for( unsigned i = 0; i < m_vAllTextures.size(); ++i )
    {
        m_vAllCoreTextures.push_back( m_vAllTextures[i]->T );
    }
}

void RFBufferNode::Render()
{
    if( m_vAllTextures.size() > 0 )
    {
        Texture & T = m_vAllTextures[0]->T;
        B.ConfigureAndStart( T.GetWidth(), T.GetHeight(), m_vAllTextures.size(), &m_vAllCoreTextures[0], true );
        NodeObject::Render();
        B.End( GLUT.miWidth, GLUT.miHeight );
    } else
        NodeObject::Render();
}

REGISTER_CLASS( RFBufferNode );

void SquareNode::Render()
{
    DrawSquare();
    NodeObject::Render();
}

REGISTER_CLASS( SquareNode );

void TransformNode::Render()
{
    glMatrixMode(GL_MODELVIEW);
    glPushMatrix();
    glTranslatef( m_fX, m_fY, m_fZ );
    glRotatef( m_rX, 1.0, 0.0, 0.0 );
    glRotatef( m_rY, 0.0, 1.0, 0.0 );
    glRotatef( m_rZ, 0.0, 0.0, 1.0 );
    glScalef( m_sX, m_sY, m_sZ );
    NodeObject::Render();
    glPopMatrix();
}

REGISTER_CLASS( TransformNode );

bool ModelNode::LoadOBJ( const char * sFileToLoad )
{
    if( !sFileToLoad )
        return false;
    char lbuffer[STRUBUFFERSIZE];
    std::vector< std::vector<float> > V;
    std::vector< std::vector<float> > VT;
    std::vector< std::vector<float> > VN;
    std::vector< float > fLine;
    fLine.resize( 3 );

    int iFaces[9];

    FILE * f = fopen( sFileToLoad, "r" );
    if( !f )
    {
        printf( "Could not open file \"%s\".", sFileToLoad );
        return false;
    }

    iList = glGenLists( 1 );
    glNewList( iList, GL_COMPILE );
    glBegin( GL_TRIANGLES );

    while( fgets( lbuffer, STRUBUFFERSIZE-1, f ) )
    {
        switch( lbuffer[0] )
        {
        case 'v':
            switch( lbuffer[1] )
            {
            case 't':
                if( sscanf( &lbuffer[3], "%f %f %f", &fLine[0], &fLine[1], &fLine[2] ) )
                    VT.push_back( fLine );
                break;
            case 'n':
                if( sscanf( &lbuffer[3], "%f %f %f", &fLine[0], &fLine[1], &fLine[2] ) )
                    VN.push_back( fLine );
                break;
            case ' ':
                if( sscanf( &lbuffer[2], "%f %f %f", &fLine[0], &fLine[1], &fLine[2] ) )
                    V.push_back( fLine );
                break;
            }
            break;
        case 'f':
            if( sscanf( &lbuffer[2], "%d/%d/%d %d/%d/%d %d/%d/%d",
                &iFaces[0], &iFaces[1], &iFaces[2],
                &iFaces[3], &iFaces[4], &iFaces[5],
                &iFaces[6], &iFaces[7], &iFaces[8] ) )
            {
                for( int i = 0; i < 9; ++i )
                    iFaces[i]--;
                glNormal3f( VN[iFaces[8]][0], VN[iFaces[8]][1], VN[iFaces[8]][2] );
                glTexCoord3f( VT[iFaces[7]][0], VT[iFaces[7]][1], VT[iFaces[7]][2] );
                glVertex3f( V[iFaces[6]][0], V[iFaces[6]][1], V[iFaces[6]][2] );
                glNormal3f( VN[iFaces[5]][0], VN[iFaces[5]][1], VN[iFaces[5]][2] );
                glTexCoord3f( VT[iFaces[4]][0], VT[iFaces[4]][1], VT[iFaces[4]][2] );
                glVertex3f( V[iFaces[3]][0], V[iFaces[3]][1], V[iFaces[3]][2] );
                glNormal3f( VN[iFaces[2]][0], VN[iFaces[2]][1], VN[iFaces[2]][2] );
                glTexCoord3f( VT[iFaces[1]][0], VT[iFaces[1]][1], VT[iFaces[1]][2] );
                glVertex3f( V[iFaces[0]][0], V[iFaces[0]][1], V[iFaces[0]][2] );
            }
        default:
            break;
        }
    }
    glEnd();
    glEndList();
    fclose( f );
    return true;
}

ModelNode::~ModelNode()
{
    if( iList )
        glDeleteLists( iList, 1 );
}

void ModelNode::Render()
{
    glCallList( iList );
    NodeObject::Render();
}

REGISTER_CLASS( ModelNode );
REGISTER_CLASS( TeapotNode );
REGISTER_CLASS( DataRunNode );

/*
Copyright (c) 2007 Charles Lohr

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

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© 2005-2007 Charles Lohr, Joshua Allen, David Chapman, Andrew Lohr. All material including documentation under the MIT/X11 license.