Source/System/NodeCores/Groups/Misc/OSGTransform.cpp

   1 /*---------------------------------------------------------------------------*\
   2  *                                OpenSG                                     *
   3  *                                                                           *
   4  *                                                                           *
   5  *             Copyright (C) 2000-2002 by the OpenSG Forum                   *
   6  *                                                                           *
   7  *                            www.opensg.org                                 *
   8  *                                                                           *
   9  *   contact: dirk@opensg.org, gerrit.voss@vossg.org, jbehr@zgdv.de          *
  10  *                                                                           *
  11 \*---------------------------------------------------------------------------*/
  12 /*---------------------------------------------------------------------------*\
  13  *                                License                                    *
  14  *                                                                           *
  15  * This library is free software; you can redistribute it and/or modify it   *
  16  * under the terms of the GNU Library General Public License as published    *
  17  * by the Free Software Foundation, version 2.                               *
  18  *                                                                           *
  19  * This library is distributed in the hope that it will be useful, but       *
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of                *
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  22  * Library General Public License for more details.                          *
  23  *                                                                           *
  24  * You should have received a copy of the GNU Library General Public         *
  25  * License along with this library; if not, write to the Free Software       *
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                 *
  27  *                                                                           *
  28 \*---------------------------------------------------------------------------*/
  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
  31  *                                                                           *
  32  *                                                                           *
  33  *                                                                           *
  34  *                                                                           *
  35  *                                                                           *
  36  *                                                                           *
  37 \*---------------------------------------------------------------------------*/
  38
  39 #include <cstdlib>
  40 #include <cstdio>
  41
  42 #include "OSGConfig.h"
  43
  44 #include "OSGGL.h"
  45
  46 #include "OSGIntersectAction.h"
  47
  48 #include "OSGRenderAction.h"
  49 #include "OSGTransform.h"
  50 #include "OSGVolume.h"
  51
  52 OSG_USING_NAMESPACE
  53
  54 // Documentation for this class is emited in the
  55 // OSGTransformBase.cpp file.
  56 // To modify it, please change the .fcd file (OSGTransform.fcd) and
  57 // regenerate the base file.
  58
  59 /*-------------------------------------------------------------------------*/
  60 /*                               Sync                                      */
  61
  62 void Transform::changed(ConstFieldMaskArg whichField,
  63                         UInt32            origin,
  64                         BitVector         details)
  65 {
  66     if(whichField & MatrixFieldMask)
  67     {
  68         invalidateVolume();
  69     }
  70
  71     Inherited::changed(whichField, origin, details);
  72 }
  73
  74 /*-------------------------------------------------------------------------*/
  75 /*                               Helper                                    */
  76
  77 void Transform::accumulateMatrix(Matrix &result)
  78 {
  79     result.mult(getMatrix());
  80 }
  81
  82 void Transform::adjustVolume(Volume &volume)
  83 {
  84     volume.transform(_sfMatrix.getValue());
  85 }
  86
  87 /*-------------------------------------------------------------------------*/
  88 /*                                Dump                                     */
  89
  90 void Transform::dump(      UInt32    uiIndent,
  91                      const BitVector bvFlags ) const
  92 {
  93    Inherited::dump(uiIndent, bvFlags);
  94 }
  95
  96 /*-------------------------------------------------------------------------*/
  97 /*                            Constructors                                 */
  98
  99 Transform::Transform(void) :
 100     Inherited()
 101 {
 102     _sfMatrix.getValue().setIdentity();
 103 }
 104
 105 Transform::Transform(const Transform &source) :
 106     Inherited(source)
 107 {
 108 }
 109
 110 /*-------------------------------------------------------------------------*/
 111 /*                             Destructor                                  */
 112
 113 Transform::~Transform(void)
 114 {
 115 }
 116
 117
 118 /*-------------------------------------------------------------------------*/
 119 /*                                Render                                   */
 120
 121 Action::ResultE Transform::renderEnter(Action *action)
 122 {
 123     RenderAction *pAction =
 124         dynamic_cast<RenderAction *>(action);
 125
 126     pAction->pushVisibility();
 127
 128     pAction->pushMatrix(this->getMatrix());
 129
 130     return Action::Continue;
 131 }
 132
 133 Action::ResultE Transform::renderLeave(Action *action)
 134 {
 135     RenderAction *pAction =
 136         dynamic_cast<RenderAction *>(action);
 137
 138     pAction->popVisibility();
 139
 140     pAction->popMatrix();
 141
 142     return Action::Continue;
 143 }
 144
 145 /*-------------------------------------------------------------------------*/
 146 /*                            Intersect                                    */
 147
 148 Action::ResultE Transform::intersectEnter(Action *action)
 149 {
 150     // Use parent class for trivial reject
 151     if(Inherited::intersectEnter(action) == Action::Skip)
 152         return Action::Skip;
 153
 154     // Need to check children
 155     IntersectAction *ia = dynamic_cast<IntersectAction *>(action);
 156     Matrix           m  = this->getMatrix();
 157
 158     m.invert();
 159
 160     Pnt3f pos;
 161     Vec3f dir;
 162
 163     m.multFull(ia->getLine().getPosition (), pos);
 164     m.mult    (ia->getLine().getDirection(), dir);
 165
 166     Real32 length = dir.length();
 167
 168     if(length < TypeTraits<Real32>::getDefaultEps())
 169         SWARNING << "Transform::intersectEnter: Near-zero scale!" << std::endl;
 170
 171     ia->setLine(Line(pos, dir), ia->getMaxDist());
 172     ia->scale  (length                          );
 173
 174     return Action::Continue;
 175 }
 176
 177 Action::ResultE Transform::intersectLeave(Action *action)
 178 {
 179     IntersectAction *ia = dynamic_cast<IntersectAction *>(action);
 180     Matrix           m  = this->getMatrix();
 181
 182     Pnt3f pos;
 183     Vec3f dir;
 184
 185     m.multFull(ia->getLine().getPosition (), pos);
 186     m.mult    (ia->getLine().getDirection(), dir);
 187
 188     ia->setLine(Line(pos, dir), ia->getMaxDist());
 189     ia->scale(dir.length());
 190
 191     return Action::Continue;
 192 }
 193 /*-------------------------------------------------------------------------*/
 194 /*                                Init                                     */
 195
 196 void Transform::initMethod(InitPhase ePhase)
 197 {
 198     Inherited::initMethod(ePhase);
 199
 200     if(ePhase == TypeObject::SystemPost)
 201     {
 202         IntersectAction::registerEnterDefault(
 203             getClassType(),
 204             reinterpret_cast<Action::Callback>(&Transform::intersectEnter));
 205         IntersectAction::registerLeaveDefault(
 206             getClassType(),
 207             reinterpret_cast<Action::Callback>(&Transform::intersectLeave));
 208
 209         RenderAction::registerEnterDefault(
 210             Transform::getClassType(),
 211             reinterpret_cast<Action::Callback>(&Transform::renderEnter));
 212         RenderAction::registerLeaveDefault(
 213             Transform::getClassType(),
 214             reinterpret_cast<Action::Callback>(&Transform::renderLeave));
 215     }
 216 }
 217