Source/Contrib/Manipulators/OSGMoveManipulator.cpp

   1 /*---------------------------------------------------------------------------*\
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  30  *                                Changes                                    *
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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <stdlib.h>
  44 #include <stdio.h>
  45
  46 #define OSG_COMPILEMANIPULATORSLIB
  47
  48 #include "OSGConfig.h"
  49 #include "OSGRenderAction.h"
  50 #include "OSGIntersectAction.h"
  51 #include "OSGCamera.h"
  52
  53 #include "OSGMoveManipulator.h"
  54
  55 OSG_USING_NAMESPACE
  56
  57 /***************************************************************************\
  58  *                            Description                                  *
  59 \***************************************************************************/
  60
  61 /*! \class OSG::MoveManipulator
  62  * The MoveHandle is used for moving objects. It consist of three axis which
  63  * can be picked and translated and one center box to translate freely in 3D.
  64  */
  65
  66 /***************************************************************************\
  67  *                           Class variables                               *
  68 \***************************************************************************/
  69
  70 /***************************************************************************\
  71  *                           Class methods                                 *
  72 \***************************************************************************/
  73
  74 void MoveManipulator::initMethod(InitPhase ePhase)
  75 {
  76     Inherited::initMethod(ePhase);
  77
  78     if(ePhase == TypeObject::SystemPost)
  79     {
  80         IntersectAction::registerEnterDefault(
  81             getClassType(),
  82             reinterpret_cast<Action::Callback>(
  83                 &MoveManipulator::intersectEnter));
  84
  85         IntersectAction::registerLeaveDefault(
  86             getClassType(),
  87             reinterpret_cast<Action::Callback>(
  88                 &MoveManipulator::intersectLeave));
  89
  90         RenderAction::registerEnterDefault(
  91             getClassType(),
  92             reinterpret_cast<Action::Callback>(&MoveManipulator::renderEnter));
  93
  94         RenderAction::registerLeaveDefault(
  95             getClassType(),
  96             reinterpret_cast<Action::Callback>(&MoveManipulator::renderLeave));
  97     }
  98 }
  99
 100
 101 /***************************************************************************\
 102  *                           Instance methods                              *
 103 \***************************************************************************/
 104
 105 /*-------------------------------------------------------------------------*\
 106  -  private                                                                 -
 107 \*-------------------------------------------------------------------------*/
 108
 109 /*----------------------- constructors & destructors ----------------------*/
 110
 111 MoveManipulator::MoveManipulator(void) :
 112     Inherited()
 113 {
 114 }
 115
 116 MoveManipulator::MoveManipulator(const MoveManipulator &source) :
 117     Inherited(source)
 118 {
 119 }
 120
 121 MoveManipulator::~MoveManipulator(void)
 122 {
 123 }
 124
 125 /*----------------------------- class specific ----------------------------*/
 126
 127 void MoveManipulator::changed(ConstFieldMaskArg whichField,
 128                               UInt32            origin,
 129                               BitVector         details)
 130 {
 131     Inherited::changed(whichField, origin, details);
 132 }
 133
 134 void MoveManipulator::dump(      UInt32    uiIndent,
 135                            const BitVector bvFlags ) const
 136 {
 137     Inherited::dump(uiIndent, bvFlags);
 138 }
 139
 140 NodeTransitPtr MoveManipulator::makeHandleGeo()
 141 {
 142     return makeCone(0.75f, 0.1f, 12, true, true);
 143 }
 144
 145 /*! The mouseMove is called by the viewer when the mouse is moved in the
 146     viewer and this handle is the active one.
 147
 148     \param x the x-pos of the mouse (pixel)
 149     \param y the y-pos of the mouse (pixel)
 150  */
 151 void MoveManipulator::mouseMove(const Int16 x,
 152                             const Int16 y)
 153 {
 154     //SLOG << "==============================" << endLog;
 155     //SLOG << "Manipulator::mouseMove() enter x=" << x << " y=" << y << endLog;
 156
 157     // get the beacon's core (must be ComponentTransform) and it's center
 158     if( getTarget() != NULL )
 159     {
 160         // get transformation of beacon
 161         Transform *t = dynamic_cast<Transform *>(getTarget()->getCore());
 162
 163         if( t != NULL )
 164         {
 165             Vec3f      translation;       // for matrix decomposition
 166             Quaternion rotation;
 167             Vec3f      scaleFactor;
 168             Quaternion scaleOrientation;
 169
 170             t->getMatrix().getTransform(translation, rotation, scaleFactor,
 171                                         scaleOrientation);
 172
 173             OSG::Line viewray;
 174             getViewport()->getCamera()->calcViewRay(viewray, x, y, *getViewport());
 175
 176             //SLOG << "Manipulator::mouseMove(): viewray: " << viewray << endLog;
 177
 178             Line axis(getAxisBase(), getAxisDirection()); // HACK: Should add a Line Fieldtype
 179
 180             //SLOG << "Manipulator::mouseMove(): axis: " << axis << endLog;
 181
 182             Real32 axist, viewrayt;
 183
 184             axis.getClosestPoints(viewray, axist, viewrayt);
 185
 186             // Only accept cases where the closest point is not behind the viewer
 187             if (viewrayt >= 0)
 188             {
 189                 axist /= getAxisDirection().length();
 190
 191                 //SLOG << "Manipulator::mouseMove(): axist=" << axist << " viewrayt=" << viewrayt <<endLog;
 192
 193                 Vec3f rot_axis;
 194
 195                 rotation.multVec(getActiveAxis(), rot_axis);
 196                 Vec3f trans = getBaseTranslation() + rot_axis * axist;
 197
 198                 Matrix m;
 199
 200                 m.setTransform(trans, rotation, scaleFactor, scaleOrientation);
 201
 202                 t->setMatrix(m);
 203             }
 204         }
 205         else
 206         {
 207             SWARNING << "handled object has no parent transform!\n";
 208         }
 209         callExternalUpdateHandler();
 210     }
 211     else
 212     {
 213         SWARNING << "Handle has no target.\n";
 214     }
 215
 216     setLastMousePos(Pnt2f(Real32(x), Real32(y)));
 217     updateHandleTransform();
 218
 219     //SLOG << "Manipulator::mouseMove() leave\n" << std::flush;
 220 }
 221
 222 /*! The mouseButtonPress is called by the viewer when the mouse is
 223     pressed in the viewer above a subhandle of this handle.
 224
 225     \param button the button pressed
 226     \param x the x-pos of the mouse (pixel)
 227     \param y the y-pos of the mouse (pixel)
 228  */
 229
 230 void MoveManipulator::mouseButtonPress(const UInt16 button,
 231                                    const Int16  x,
 232                                    const Int16  y     )
 233 {
 234     Transform *t = dynamic_cast<Transform *>(getTarget()->getCore());
 235
 236     if (t == NULL)
 237     {
 238         SWARNING << "Manipulator::mouseButtonPress() target is not a Transform!" << endLog;
 239         return;
 240     }
 241
 242     //SLOG << "Manipulator::mouseButtonPress() button=" << button << " x=" << x << " y=" << y  << std::endl << endLog;
 243
 244     OSG::Line viewray;
 245     getViewport()->getCamera()->calcViewRay(viewray, x, y, *getViewport());
 246
 247     OSG::Node *scene = getTarget();
 248     while (scene->getParent() != 0)
 249     {
 250         scene = scene->getParent();
 251     }
 252
 253     OSG::IntersectActionRefPtr act = OSG::IntersectAction::create();
 254     act->setLine( viewray );
 255     act->apply( scene );
 256
 257     //SLOG << "Manipulator::mouseButtonPress() viewray=" << viewray << " scene=" << scene << endLog;
 258
 259     if ( act->didHit() )
 260     {
 261         //SLOG << "Manipulator::mouseButtonPress() hit! at " << act->getHitPoint() << endLog;
 262
 263         // Get manipulator axis into world space
 264         OSG::Matrix m = getTarget()->getToWorld();
 265
 266         Pnt3f origin(0,0,0), base, dummy;
 267         Vec3f dir;
 268
 269         m.multFull(origin, base);
 270         m.multFull(getActiveAxis(), dir);
 271
 272         Line axis(base, dir);
 273
 274         //SLOG << "Manipulator::mouseButtonPress() world axis=" << axis << endLog;
 275
 276         Pnt3f apoint;
 277         axis.getClosestPoints(viewray, apoint, dummy);
 278
 279         //SLOG << "Manipulator::mouseButtonPress() apoint " << apoint << endLog;
 280
 281         setAxisBase(apoint);
 282         setAxisDirection(dir);
 283
 284         Vec3f      translation;       // for matrix decomposition
 285         Quaternion rotation;
 286         Vec3f      scaleFactor;
 287         Quaternion scaleOrientation;
 288
 289         t->getMatrix().getTransform(translation, rotation, scaleFactor,
 290                                     scaleOrientation);
 291
 292         setBaseTranslation(translation);
 293
 294         setActive(true);
 295     }
 296
 297     act = NULL;
 298 }
 299
 300 void MoveManipulator::mouseButtonRelease(const UInt16 button,
 301                                      const Int16  x,
 302                                      const Int16  y     )
 303 {
 304     //SLOG << "Manipulator::mouseButtonRelease() button=" << button << " x=" << x << " y=" << y  << std::endl << endLog;
 305     setActive(false);
 306 }