State.cpp

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// Copyright (C) 2005 Dave Griffiths
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#include "Renderer.h"
#include "TexturePainter.h"
#include "State.h"

using namespace Fluxus;

State::State() :
Colour(1,1,1),
Shinyness(1.0f),
Opacity(1.0f),
Parent(1),
Hints(HINT_SOLID),
LineWidth(1),
PointWidth(1),
SourceBlend(GL_SRC_ALPHA),
DestinationBlend(GL_ONE_MINUS_SRC_ALPHA),
WireColour(1,1,1),
WireOpacity(1.0f),
ColourMode(MODE_RGB),
Shader(NULL),
Cull(true)
{
    for (int c=0; c<MAX_TEXTURES; c++)
    {
        Textures[c]=0;
    }
}

State::State(const State &other) 
{
    *this=other;
}

const State &State::operator=(const State &other)
{
    Colour=other.Colour;
    Specular=other.Specular;
    Emissive=other.Emissive;
    Ambient=other.Ambient;
    Shinyness=other.Shinyness;
    Opacity=other.Opacity;
    Parent=other.Parent;
    Hints=other.Hints;
    LineWidth=other.LineWidth;
    PointWidth=other.PointWidth;
    SourceBlend=other.SourceBlend;
    DestinationBlend=other.DestinationBlend;
    WireColour=other.WireColour;
    WireOpacity=other.WireOpacity;
    ColourMode=other.ColourMode;
    Transform=other.Transform;
    Shader=other.Shader;
    Cull=other.Cull;
    
    if (Shader!=NULL) 
    {
        Shader->IncRef();
    }
    for (int n=0; n<=MAX_TEXTURES; n++)
    {
        Textures[n]=other.Textures[n];
        TextureStates[n]=other.TextureStates[n];
    }
    
    return *this;
}

State::~State()
{
    if (Shader!=NULL && Shader->DecRef()) delete Shader;
}

void State::Apply()
{
    glMultMatrixf(Transform.arr());
    if (Opacity != 1.0f) Colour.a=Ambient.a=Emissive.a=Specular.a=Opacity;
    if (WireOpacity != 1.0f) WireColour.a=WireOpacity;
    glColor4f(Colour.r,Colour.g,Colour.b,Colour.a);
    glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT,Ambient.arr());
    glMaterialfv(GL_FRONT_AND_BACK,GL_EMISSION,Emissive.arr());
    glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,Colour.arr());
    glMaterialfv(GL_FRONT_AND_BACK,GL_SPECULAR,Specular.arr());
    glMaterialfv(GL_FRONT_AND_BACK,GL_SHININESS,&Shinyness);
    glLineWidth(LineWidth);
    glPointSize(PointWidth);
    glBlendFunc(SourceBlend,DestinationBlend);
    
    if (Cull) glEnable(GL_CULL_FACE);
    else glDisable(GL_CULL_FACE);
        
    if (Hints&HINT_CULL_CCW) glFrontFace(GL_CW);
    else glFrontFace(GL_CCW);
    
    TexturePainter::Get()->SetCurrent(Textures,TextureStates);

    if (Shader!=NULL) 
    {
        Shader->Apply();
    }
    else GLSLShader::Unapply();
}

void State::Spew()
{
    Trace::Stream<<"Colour: "<<Colour<<endl
        <<"Specular: "<<Specular<<endl
        <<"Ambient: "<<Ambient<<endl
        <<"Emissive: "<<Emissive<<endl
        <<"Shinyness: "<<Shinyness<<endl
        <<"Opacity: "<<Opacity<<endl
        <<"WireOpacity: "<<WireOpacity<<endl
        <<"Texture: "<<Textures[0]<<endl
        <<"Parent: "<<Parent<<endl
        <<"Hints: "<<Hints<<endl
        <<"LineWidth: "<<LineWidth<<endl
        <<"Transform: "<<Transform<<endl;
}

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