ryzom/common/src/game_share/dir_light_setup.cpp

   1 // Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
   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
  18
  19
  20
  21 #include "stdpch.h"
  22 #include "dir_light_setup.h"
  23 #include "georges_helper.h"
  24 #include "nel/georges/u_form_elm.h"
  25
  26
  27 //-----------------------------------------------
  28 CDirLightSetup::CDirLightSetup() :
  29                                                         Ambiant(0, 0, 0),
  30                                                         Diffuse(255, 255, 255),
  31                                                         Specular(0, 0, 0),
  32                                                         Direction(1.f, 0.f, 0.f)
  33 {
  34 }
  35
  36 //-----------------------------------------------
  37 void CDirLightSetup::blend(const CDirLightSetup &setup0, const CDirLightSetup &setup1, float blendFactor)
  38 {
  39         uint uiFactor = (uint) (256.f * blendFactor);
  40         Ambiant.blendFromui(setup0.Ambiant, setup1.Ambiant, uiFactor);
  41         Diffuse.blendFromui(setup0.Diffuse, setup1.Diffuse, uiFactor);
  42         Specular.blendFromui(setup0.Specular, setup1.Specular, uiFactor);
  43         Direction = (blendFactor * setup0.Direction + (1.f - blendFactor) * setup1.Direction).normed();
  44 }
  45
  46 //-----------------------------------------------
  47 void CDirLightSetup::modulate(float level)
  48 {
  49         uint uiLevel = (uint) (256.f * level);
  50         Ambiant.modulateFromui(Ambiant, uiLevel);
  51         Diffuse.modulateFromui(Diffuse, uiLevel);
  52         Specular.modulateFromui(Specular, uiLevel);
  53 }
  54
  55 //-----------------------------------------------
  56 bool CDirLightSetup::build(const NLGEORGES::UFormElm &item)
  57 {
  58         NLMISC::CRGBA amb, dif, spe;
  59         NLMISC::CVector dir;
  60
  61         const NLGEORGES::UFormElm *pElt;
  62         // Light Direction
  63         if (item.getNodeByName (&pElt, ".Direction") && pElt)
  64         {
  65                 if (!CGeorgesHelper::convert(dir, *pElt)) return false;
  66         }
  67         // Light Ambiant
  68         if (item.getNodeByName (&pElt, ".Ambiant") && pElt)
  69         {
  70                 if (!CGeorgesHelper::convert(amb, *pElt)) return false;
  71         }
  72
  73         // Light Diffuse
  74         if (item.getNodeByName (&pElt, ".Diffuse") && pElt)
  75         {
  76                 if (!CGeorgesHelper::convert(dif, *pElt)) return false;
  77         }
  78
  79         // Light Specular
  80         if (item.getNodeByName (&pElt, ".Specular") && pElt)
  81         {
  82                 if (!CGeorgesHelper::convert(spe, *pElt)) return false;
  83         }
  84
  85         Ambiant = amb;
  86         Diffuse = dif;
  87         Specular = spe;
  88         Direction = dir;
  89
  90         return true;
  91 }