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92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "std3d.h"
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#include "nel/3d/vegetable_clip_block.h"
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namespace NL3D
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{
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// ***************************************************************************
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CVegetableClipBlock::CVegetableClipBlock()
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{
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_Empty= true;
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_RenderNext= NULL;
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_NumIgs= 0;
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}
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// ***************************************************************************
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void CVegetableClipBlock::extendBBoxOnly(const CVector &vec)
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{
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if( !_BBox.include(vec) )
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{
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_BBox.extend(vec);
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}
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}
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// ***************************************************************************
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void CVegetableClipBlock::updateSphere()
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{
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_BSphere.Center= _BBox.getCenter();
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_BSphere.Radius= _BBox.getRadius();
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}
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// ***************************************************************************
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void CVegetableClipBlock::extendSphere(const CVector &vec)
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{
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if(_Empty)
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{
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_Empty= false;
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_BBox.setCenter(vec);
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_BBox.setHalfSize(CVector::Null);
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_BSphere.Center= vec;
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_BSphere.Radius= 0;
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}
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else
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{
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extendBBoxOnly(vec);
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updateSphere();
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}
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}
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// ***************************************************************************
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bool CVegetableClipBlock::clip(const std::vector<CPlane> &pyramid)
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{
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if(_Empty)
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return false;
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for(uint i=0;i<pyramid.size();i++)
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{
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// If entirely out.
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if(!_BSphere.clipBack( pyramid[i] ))
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{
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return false;
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}
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}
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return true;
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}
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} // NL3D
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