Line data    Source code

       1             : /* Copyright (C) 2011 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. is free software: you can redistribute it and/or modify
       5             :  * it under the terms of the GNU General Public License as published by
       6             :  * the Free Software Foundation, either version 2 of the License, or
       7             :  * (at your option) any later version.
       8             :  *
       9             :  * 0 A.D. 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 General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU General Public License
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : #include "precompiled.h"
      19             : 
      20             : #include "ModelAbstract.h"
      21             : 
      22             : #include "ps/CLogger.h"
      23             : 
      24           0 : const CBoundingBoxOriented& CModelAbstract::GetSelectionBox()
      25             : {
      26           0 :     if (!m_SelectionBoxValid)
      27             :     {
      28           0 :         CalcSelectionBox();
      29           0 :         m_SelectionBoxValid = true;
      30             :     }
      31           0 :     return m_SelectionBox;
      32             : }
      33             : 
      34           0 : void CModelAbstract::CalcSelectionBox()
      35             : {
      36           0 :     if (m_CustomSelectionShape)
      37             :     {
      38             :         // custom shape
      39           0 :         switch(m_CustomSelectionShape->m_Type)
      40             :         {
      41           0 :         case CustomSelectionShape::BOX:
      42             :             {
      43             :                 // create object-space bounds according to the information in the descriptor, and transform them to world-space.
      44             :                 // the box is centered on the X and Z axes, but extends from 0 to its height on the Y axis.
      45           0 :                 const float width = m_CustomSelectionShape->m_Size0;
      46           0 :                 const float depth = m_CustomSelectionShape->m_Size1;
      47           0 :                 const float height = m_CustomSelectionShape->m_Height;
      48             : 
      49           0 :                 CBoundingBoxAligned bounds;
      50           0 :                 bounds += CVector3D(-width/2.f, 0,     -depth/2.f);
      51           0 :                 bounds += CVector3D( width/2.f, height, depth/2.f);
      52             : 
      53           0 :                 bounds.Transform(GetTransform(), m_SelectionBox);
      54             :             }
      55           0 :             break;
      56           0 :         case CustomSelectionShape::CYLINDER:
      57             :             {
      58             :                 // TODO: unimplemented
      59           0 :                 m_SelectionBox.SetEmpty();
      60           0 :                 LOGWARNING("[ModelAbstract] TODO: Cylinder selection boxes are not yet implemented. Use BOX or BOUNDS selection shapes instead.");
      61             :             }
      62           0 :             break;
      63           0 :         default:
      64             :             {
      65           0 :                 m_SelectionBox.SetEmpty();
      66             :                 //LOGWARNING("[ModelAbstract] Unrecognized selection shape type: %ld", m_CustomSelectionShape->m_Type);
      67           0 :                 debug_warn("[ModelAbstract] Unrecognized selection shape type");
      68             :             }
      69           0 :             break;
      70             :         }
      71             :     }
      72             :     else
      73             :     {
      74             :         // standard method
      75             : 
      76             :         // Get the object-space bounds that should be used to construct this model (and its children)'s selection box
      77           0 :         CBoundingBoxAligned objBounds = GetObjectSelectionBoundsRec();
      78           0 :         if (objBounds.IsEmpty())
      79             :         {
      80           0 :             m_SelectionBox.SetEmpty(); // model does not wish to participate in selection
      81           0 :             return;
      82             :         }
      83             : 
      84             :         // Prevent the bounding box from extending through the terrain; clip the lower plane at Y=0 in object space.
      85           0 :         if (objBounds[1].Y > 0.f) // should always be the case, unless the models are defined really weirdly
      86           0 :             objBounds[0].Y = std::max(0.f, objBounds[0].Y);
      87             : 
      88             :         // transform object-space axis-aligned bounds to world-space arbitrary-aligned box
      89           0 :         objBounds.Transform(GetTransform(), m_SelectionBox);
      90             :     }
      91             : 
      92           3 : }