nel/src/3d/tile_light_influence.cpp

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #include "std3d.h"
  18
  19 #include "nel/3d/tile_light_influence.h"
  20 #include "nel/misc/debug.h"
  21
  22 #ifdef DEBUG_NEW
  23 #define new DEBUG_NEW
  24 #endif
  25
  26 namespace NL3D
  27 {
  28
  29
  30 void                    CTileLightInfluence::setDiffuseLightFactor(uint i, uint8 factor)
  31 {
  32         nlassert(CTileLightInfluence::NumLightPerCorner == 2);
  33         nlassert(i == 0 || i == 1);
  34
  35         // Divide by 16.
  36         factor>>=4;
  37
  38         // set to the ith light.
  39         uint8   mask= 0x0F << (4*i);
  40         // clear.
  41         PackedLightFactor&= ~mask;
  42         // set.
  43         PackedLightFactor|= factor << (4*i);
  44 }
  45
  46
  47 uint8                   CTileLightInfluence::getDiffuseLightFactor(uint i) const
  48 {
  49         nlassert(CTileLightInfluence::NumLightPerCorner == 2);
  50         nlassert(i == 0 || i == 1);
  51
  52         // Choose what factor
  53         uint8   ret= PackedLightFactor >> (4*i);
  54         ret&= 0x0F;
  55
  56         // expand to 0..255
  57         return ret + (ret<<4);
  58 }
  59
  60
  61 void                    CTileLightInfluence::serial(NLMISC::IStream &f)
  62 {
  63         nlassert(CTileLightInfluence::NumLightPerCorner == 2);
  64         // No version for smaller size on disk !!
  65
  66         f.serial(Light[0], Light[1], PackedLightFactor);
  67 }
  68
  69
  70
  71 } // NL3D