Changeset 8880c9 for src/UIElements/Views/Qt4

Timestamp:

Jul 17, 2012, 12:17:22 PM (13 years ago)

Author:

Michael Ankele <ankele@…>

Branches:

Action_Thermostats, Add_AtomRandomPerturbation, Add_FitFragmentPartialChargesAction, Add_RotateAroundBondAction, Add_SelectAtomByNameAction, Added_ParseSaveFragmentResults, AddingActions_SaveParseParticleParameters, Adding_Graph_to_ChangeBondActions, Adding_MD_integration_tests, Adding_ParticleName_to_Atom, Adding_StructOpt_integration_tests, AtomFragments, Automaking_mpqc_open, AutomationFragmentation_failures, Candidate_v1.5.4, Candidate_v1.6.0, Candidate_v1.6.1, ChangeBugEmailaddress, ChangingTestPorts, ChemicalSpaceEvaluator, CombiningParticlePotentialParsing, Combining_Subpackages, Debian_Package_split, Debian_package_split_molecuildergui_only, Disabling_MemDebug, Docu_Python_wait, EmpiricalPotential_contain_HomologyGraph, EmpiricalPotential_contain_HomologyGraph_documentation, Enable_parallel_make_install, Enhance_userguide, Enhanced_StructuralOptimization, Enhanced_StructuralOptimization_continued, Example_ManyWaysToTranslateAtom, Exclude_Hydrogens_annealWithBondGraph, FitPartialCharges_GlobalError, Fix_BoundInBox_CenterInBox_MoleculeActions, Fix_ChargeSampling_PBC, Fix_ChronosMutex, Fix_FitPartialCharges, Fix_FitPotential_needs_atomicnumbers, Fix_ForceAnnealing, Fix_IndependentFragmentGrids, Fix_ParseParticles, Fix_ParseParticles_split_forward_backward_Actions, Fix_PopActions, Fix_QtFragmentList_sorted_selection, Fix_Restrictedkeyset_FragmentMolecule, Fix_StatusMsg, Fix_StepWorldTime_single_argument, Fix_Verbose_Codepatterns, Fix_fitting_potentials, Fixes, ForceAnnealing_goodresults, ForceAnnealing_oldresults, ForceAnnealing_tocheck, ForceAnnealing_with_BondGraph, ForceAnnealing_with_BondGraph_continued, ForceAnnealing_with_BondGraph_continued_betteresults, ForceAnnealing_with_BondGraph_contraction-expansion, FragmentAction_writes_AtomFragments, FragmentMolecule_checks_bonddegrees, GeometryObjects, Gui_Fixes, Gui_displays_atomic_force_velocity, ImplicitCharges, IndependentFragmentGrids, IndependentFragmentGrids_IndividualZeroInstances, IndependentFragmentGrids_IntegrationTest, IndependentFragmentGrids_Sole_NN_Calculation, JobMarket_RobustOnKillsSegFaults, JobMarket_StableWorkerPool, JobMarket_unresolvable_hostname_fix, MoreRobust_FragmentAutomation, ODR_violation_mpqc_open, PartialCharges_OrthogonalSummation, PdbParser_setsAtomName, PythonUI_with_named_parameters, QtGui_reactivate_TimeChanged_changes, Recreated_GuiChecks, Rewrite_FitPartialCharges, RotateToPrincipalAxisSystem_UndoRedo, SaturateAtoms_findBestMatching, SaturateAtoms_singleDegree, StoppableMakroAction, Subpackage_CodePatterns, Subpackage_JobMarket, Subpackage_LinearAlgebra, Subpackage_levmar, Subpackage_mpqc_open, Subpackage_vmg, Switchable_LogView, ThirdParty_MPQC_rebuilt_buildsystem, TrajectoryDependenant_MaxOrder, TremoloParser_IncreasedPrecision, TremoloParser_MultipleTimesteps, TremoloParser_setsAtomName, Ubuntu_1604_changes, stable

Children:

45ea59

Parents:

3f48c2

git-author:

Michael Ankele <ankele@…> (05/03/12 10:46:33)

git-committer:

Michael Ankele <ankele@…> (07/17/12 12:17:22)

Message:

GLWorldView: implemented own camera

• rotation/translation mode is controlled via toolbar actions
• shift key temporarily toggles mode

Location:

src/UIElements/Views/Qt4/Qt3D

Files:

• GLWorldView.cpp (modified) (2 diffs)
• GLWorldView.hpp (modified) (2 diffs)

src/UIElements/Views/Qt4/Qt3D/GLWorldView.cpp

@@ -41 +41 @@
 
   setOption(QGLView::ObjectPicking, true);
+  setOption(QGLView::CameraNavigation, false);
+  setCameraControlMode(Rotate);
 
   connect(worldscene, SIGNAL(changeOccured()), this, SLOT(changeSignalled()));
@@ -248 +250 @@
 }
 
+/**
+ * Set the camera so it can oversee the whole domain.
+ */
 void GLWorldView::fitCameraToDomain()
 {
-  // move the camera focus point to the center of the domain box
+  // Move the camera focus point to the center of the domain box.
   Vector v = World::getInstance().getDomain().translateIn(Vector(0.5, 0.5, 0.5));
   camera()->setCenter(QVector3D(v[0], v[1], v[2]));
 
-  // guess some eye distance
+  // Guess some eye distance.
   double dist = v.Norm() * 3;
   camera()->setEye(QVector3D(v[0], v[1], v[2] + dist));
   camera()->setUpVector(QVector3D(0, 1, 0));
 }
+
+void GLWorldView::mousePressEvent(QMouseEvent *event)
+{
+  QGLView::mousePressEvent(event);
+
+  // Reset the saved mouse position.
+  lastMousePos = event->posF();
+}
+
+/**
+ * Handle a mouse move event.
+ * This is used to control the camera (rotation and translation) when the left button is being pressed.
+ */
+void GLWorldView::mouseMoveEvent(QMouseEvent *event)
+{
+  if (event->buttons() & Qt::LeftButton){
+    // Find the mouse distance since the last event.
+    QPointF d = event->posF() - lastMousePos;
+    lastMousePos = event->posF();
+
+    // Rotate or translate?   (inverted by shift key)
+    CameraControlModeType mode = getCameraControlMode(event->modifiers() & Qt::ShiftModifier);
+
+    if (mode == Rotate){
+      // Rotate the camera.
+      d *= 0.3;
+      camera()->tiltPanRollCenter(- d.y(), - d.x(), 0);
+    }else if (mode == Translate){
+      // Translate the camera.
+      d *= 0.02;
+      camera()->translateCenter(- d.x(), d.y(), 0);
+      camera()->translateEye(- d.x(), d.y(), 0);
+    }
+  }else{
+    // Without this Qt would not test for hover events (i.e. mouse over an atom).
+    QGLView::mouseMoveEvent(event);
+  }
+}
+
+/**
+ * When the mouse wheel is used, zoom in or out.
+ */
+void GLWorldView::wheelEvent(QWheelEvent *event)
+{
+  // Find the distance between the eye and focus point.
+  QVector3D d = camera()->eye() - camera()->center();
+
+  // Scale the distance.
+  if (event->delta() < 0)
+    d *= 1.2;
+  else if (event->delta() > 0)
+    d /= 1.2;
+
+  // Set new eye position.
+  camera()->setEye(camera()->center() + d);
+}
+
 
 //#include <GL/glu.h>

src/UIElements/Views/Qt4/Qt3D/GLWorldView.hpp

@@ -58 +58 @@
   void initializeGL(QGLPainter *painter);
   void paintGL(QGLPainter *painter);
-  void keyPressEvent(QKeyEvent *e);
+
+  // input functions
+  void mousePressEvent(QMouseEvent *event);
+  void mouseMoveEvent(QMouseEvent *event);
+  void keyPressEvent(QKeyEvent *event);
+  void wheelEvent(QWheelEvent *event);
 
   // camera functions
@@ -81 +86 @@
   bool changesPresent;
   bool processingSelectionChanged; // workaround to prevent a loop in (atom_iterator <-> observer)
+
+  QPointF lastMousePos;
 };