source: OGRE/trunk/ogrenew/OgreMain/src/OgreMovablePlane.cpp @ 692

Revision 692, 4.0 KB checked in by mattausch, 19 years ago (diff)

adding ogre 1.2 and dependencies

Line 
1/*
2-----------------------------------------------------------------------------
3This source file is part of OGRE
4(Object-oriented Graphics Rendering Engine)
5For the latest info, see http://www.ogre3d.org/
6
7Copyright (c) 2000-2005 The OGRE Team
8Also see acknowledgements in Readme.html
9
10This program is free software; you can redistribute it and/or modify it under
11the terms of the GNU Lesser General Public License as published by the Free Software
12Foundation; either version 2 of the License, or (at your option) any later
13version.
14
15This program is distributed in the hope that it will be useful, but WITHOUT
16ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19You should have received a copy of the GNU Lesser General Public License along with
20this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22http://www.gnu.org/copyleft/lesser.txt.
23-----------------------------------------------------------------------------
24*/
25#include "OgreStableHeaders.h"
26#include "OgreMovablePlane.h"
27#include "OgreNode.h"
28
29namespace Ogre {
30
31    String MovablePlane::msMovableType = "MovablePlane";
32    //-----------------------------------------------------------------------
33    //-----------------------------------------------------------------------
34    MovablePlane::MovablePlane(const String& name) : Plane(), MovableObject(name),
35        mLastTranslate(Vector3::ZERO),
36        mLastRotate(Quaternion::IDENTITY),
37        mDirty(true)
38    {
39    }
40    //-----------------------------------------------------------------------
41    MovablePlane::MovablePlane (const Plane& rhs) : Plane(rhs),
42        mLastTranslate(Vector3::ZERO), mLastRotate(Quaternion::IDENTITY),
43        mDirty(true)
44    {
45    }
46    //-----------------------------------------------------------------------
47    MovablePlane::MovablePlane (const Vector3& rkNormal, Real fConstant)
48        : Plane (rkNormal, fConstant), mLastTranslate(Vector3::ZERO),
49        mLastRotate(Quaternion::IDENTITY), mDirty(true)
50    {
51    }
52    //-----------------------------------------------------------------------
53    MovablePlane::MovablePlane (const Vector3& rkNormal, const Vector3& rkPoint)
54        : Plane(rkNormal, rkPoint), mLastTranslate(Vector3::ZERO),
55        mLastRotate(Quaternion::IDENTITY), mDirty(true)
56    {
57    }
58    //-----------------------------------------------------------------------
59    MovablePlane::MovablePlane (const Vector3& rkPoint0, const Vector3& rkPoint1,
60        const Vector3& rkPoint2)
61        : Plane(rkPoint0, rkPoint1, rkPoint2), mLastTranslate(Vector3::ZERO),
62        mLastRotate(Quaternion::IDENTITY), mDirty(true)
63    {
64    }
65    //-----------------------------------------------------------------------
66    const Plane& MovablePlane::_getDerivedPlane(void) const
67    {
68        if (mParentNode)
69        {
70            if (mDirty ||
71                !(mParentNode->_getDerivedOrientation() == mLastRotate &&
72                mParentNode->_getDerivedPosition() == mLastTranslate))
73            {
74                mLastRotate = mParentNode->_getDerivedOrientation();
75                mLastTranslate = mParentNode->_getDerivedPosition();
76                // Rotate normal
77                mDerivedPlane.normal = mLastRotate * normal;
78                // d remains the same in rotation, since rotation happens first
79                mDerivedPlane.d = d;
80                // Add on the effect of the translation (project onto new normal)
81                mDerivedPlane.d -= mDerivedPlane.normal.dotProduct(mLastTranslate);
82
83                mDirty = false;
84
85            }
86        }
87        else
88        {
89            return *this;
90        }
91
92        return mDerivedPlane;
93    }
94    //-----------------------------------------------------------------------
95    const String& MovablePlane::getMovableType(void) const
96    {
97        return msMovableType;
98    }
99}
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