kicad/3d-viewer/3d_rendering/3d_render_raytracing/shapes3D/cdummyblock.cpp

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2016 Mario Luzeiro <mrluzeiro@ua.pt>
 * Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

/**
 * @file  cdummyblock.cpp
 * @brief
 */

#include "cdummyblock.h"


CDUMMYBLOCK::CDUMMYBLOCK( const CBBOX &aBBox ) : COBJECT( OBJ3D_DUMMYBLOCK )
{
    m_centroid = aBBox.GetCenter();
    m_bbox.Reset();
    m_bbox.Set( aBBox );
}


bool CDUMMYBLOCK::Intersect( const RAY &aRay, HITINFO &aHitInfo ) const
{
    float t;

    if( !m_bbox.Intersect( aRay, &t ) )
        return false;

    if( t < aHitInfo.m_tHit )
    {
        aHitInfo.m_tHit = t;
        aHitInfo.m_HitPoint = aRay.at( t );

        if( aRay.m_dirIsNeg[2] )
            aHitInfo.m_HitNormal = SFVEC3F( 0.0f, 0.0f, 1.0f );
        else
            aHitInfo.m_HitNormal = SFVEC3F( 0.0f, 0.0f,-1.0f );

        m_material->PerturbeNormal( aHitInfo.m_HitNormal, aRay, aHitInfo );

        aHitInfo.pHitObject = this;

        return true;
    }

    return false;
}


bool CDUMMYBLOCK::IntersectP(const RAY &aRay , float aMaxDistance ) const
{
    float t;

    if( !m_bbox.Intersect( aRay, &t ) )
        return false;

    if( t < aMaxDistance )
        return true;

    return false;
}


bool CDUMMYBLOCK::Intersects( const CBBOX &aBBox ) const
{
    return m_bbox.Intersects( aBBox );
}


SFVEC3F CDUMMYBLOCK::GetDiffuseColor( const HITINFO &aHitInfo ) const
{
    (void)aHitInfo; // unused

    return m_diffusecolor;
}