DrawVert.h

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/*
===========================================================================

Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  

Doom 3 Source Code 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 3 of the License, or
(at your option) any later version.

Doom 3 Source Code 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 Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#ifndef __DRAWVERT_H__
#define __DRAWVERT_H__

/*
===============================================================================

        Draw Vertex.

===============================================================================
*/

class idDrawVert {
public:
        idVec3                  xyz;
        idVec2                  st;
        idVec3                  normal;
        idVec3                  tangents[2];
        byte                    color[4];
#if 0 // was MACOS_X see comments concerning DRAWVERT_PADDED in Simd_Altivec.h 
        float                   padding;
#endif
        float                   operator[]( const int index ) const;
        float &                 operator[]( const int index );

        void                    Clear( void );

        void                    Lerp( const idDrawVert &a, const idDrawVert &b, const float f );
        void                    LerpAll( const idDrawVert &a, const idDrawVert &b, const float f );

        void                    Normalize( void );

        void                    SetColor( dword color );
        dword                   GetColor( void ) const;
};

ID_INLINE float idDrawVert::operator[]( const int index ) const {
        assert( index >= 0 && index < 5 );
        return ((float *)(&xyz))[index];
}
ID_INLINE float &idDrawVert::operator[]( const int index ) {
        assert( index >= 0 && index < 5 );
        return ((float *)(&xyz))[index];
}

ID_INLINE void idDrawVert::Clear( void ) {
        xyz.Zero();
        st.Zero();
        normal.Zero();
        tangents[0].Zero();
        tangents[1].Zero();
        color[0] = color[1] = color[2] = color[3] = 0;
}

ID_INLINE void idDrawVert::Lerp( const idDrawVert &a, const idDrawVert &b, const float f ) {
        xyz = a.xyz + f * ( b.xyz - a.xyz );
        st = a.st + f * ( b.st - a.st );
}

ID_INLINE void idDrawVert::LerpAll( const idDrawVert &a, const idDrawVert &b, const float f ) {
        xyz = a.xyz + f * ( b.xyz - a.xyz );
        st = a.st + f * ( b.st - a.st );
        normal = a.normal + f * ( b.normal - a.normal );
        tangents[0] = a.tangents[0] + f * ( b.tangents[0] - a.tangents[0] );
        tangents[1] = a.tangents[1] + f * ( b.tangents[1] - a.tangents[1] );
        color[0] = (byte)( a.color[0] + f * ( b.color[0] - a.color[0] ) );
        color[1] = (byte)( a.color[1] + f * ( b.color[1] - a.color[1] ) );
        color[2] = (byte)( a.color[2] + f * ( b.color[2] - a.color[2] ) );
        color[3] = (byte)( a.color[3] + f * ( b.color[3] - a.color[3] ) );
}

ID_INLINE void idDrawVert::SetColor( dword color ) {
        *reinterpret_cast<dword *>(this->color) = color;
}

ID_INLINE dword idDrawVert::GetColor( void ) const {
        return *reinterpret_cast<const dword *>(this->color);
}

#endif /* !__DRAWVERT_H__ */