0027137: Visualization - handle shadow structures within V3d_View::Gravity()

OpenGl_StructureShadow - copy bounding box from parent structure.
Prs3d_PresentationShadow::CalculateBoundBox() - do nothing.

V3d_View::Gravity() - skip presentations with transformation persistence flags.
Use cached presentation bounding box.

diff --git a/src/Graphic3d/Graphic3d_Structure.hxx b/src/Graphic3d/Graphic3d_Structure.hxx
index f3d8691..6e0b80e 100644 (file)
--- a/src/Graphic3d/Graphic3d_Structure.hxx
+++ b/src/Graphic3d/Graphic3d_Structure.hxx
@@ -124,8 +124,7 @@ public:
   Standard_EXPORT void Remove();
   
   //! Computes axis-aligned bounding box of a structure.
-  //! Category: Methods to modify the class definition
-  Standard_EXPORT void CalculateBoundBox();
+  Standard_EXPORT virtual void CalculateBoundBox();
   
   //! If <theToSet> is Standard_True then <me> is infinite and
   //! the MinMaxValues method method return :

diff --git a/src/OpenGl/OpenGl_StructureShadow.cxx b/src/OpenGl/OpenGl_StructureShadow.cxx
index f53fe40..3d272ab 100644 (file)
--- a/src/OpenGl/OpenGl_StructureShadow.cxx
+++ b/src/OpenGl/OpenGl_StructureShadow.cxx
@@ -33,6 +33,7 @@ OpenGl_StructureShadow::OpenGl_StructureShadow (const Handle(Graphic3d_Structure
   ContainsFacet = myParent->ContainsFacet;
   IsInfinite    = myParent->IsInfinite;
   Transformation = myParent->Transformation;
+  myBndBox       = myParent->BoundingBox();
 
   UpdateTransformation();
   myInstancedStructure = const_cast<OpenGl_Structure*> (myParent->InstancedStructure());

diff --git a/src/Prs3d/Prs3d_PresentationShadow.cxx b/src/Prs3d/Prs3d_PresentationShadow.cxx
index 246d85e..37e4fa2 100644 (file)
--- a/src/Prs3d/Prs3d_PresentationShadow.cxx
+++ b/src/Prs3d/Prs3d_PresentationShadow.cxx
@@ -30,3 +30,12 @@ Prs3d_PresentationShadow::Prs3d_PresentationShadow (const Handle(Graphic3d_Struc
 {
   //
 }
+
+//=======================================================================
+//function : CalculateBoundBox
+//purpose  :
+//=======================================================================
+void Prs3d_PresentationShadow::CalculateBoundBox()
+{
+  //
+}

diff --git a/src/Prs3d/Prs3d_PresentationShadow.hxx b/src/Prs3d/Prs3d_PresentationShadow.hxx
index 819b02a..26037de 100644 (file)
--- a/src/Prs3d/Prs3d_PresentationShadow.hxx
+++ b/src/Prs3d/Prs3d_PresentationShadow.hxx
@@ -34,6 +34,9 @@ public:
   //! Returns view affinity of the parent presentation
   Standard_EXPORT inline const Handle(Graphic3d_ViewAffinity)& ParentAffinity() const { return myParentAffinity; }
 
+  //! Do nothing - axis-aligned bounding box should be initialized from parent structure.
+  Standard_EXPORT virtual void CalculateBoundBox() Standard_OVERRIDE;
+
 private: 
 
   DEFINE_STANDARD_RTTIEXT(Prs3d_PresentationShadow,Prs3d_Presentation)

diff --git a/src/V3d/V3d_View.cxx b/src/V3d/V3d_View.cxx
index 33e0690..f2c0493 100644 (file)
--- a/src/V3d/V3d_View.cxx
+++ b/src/V3d/V3d_View.cxx
@@ -2190,21 +2190,31 @@ void V3d_View::Gravity (Standard_Real& theX,
   {
     const Handle(Graphic3d_Structure)& aStruct = aStructIter.Key();
     if (!aStruct->IsVisible()
-    || (hasSelection && !aStruct->IsHighlighted())
-    ||  aStruct->IsEmpty())
+      || aStruct->IsInfinite()
+      || (hasSelection && !aStruct->IsHighlighted()))
     {
       continue;
     }
 
-    Bnd_Box aBox = aStruct->MinMaxValues();
-    if (aBox.IsVoid() || aStruct->IsInfinite())
+    const Graphic3d_BndBox4f& aBox = aStruct->CStructure()->BoundingBox();
+    if (!aBox.IsValid())
+    {
+      continue;
+    }
+
+    // skip transformation-persistent objects
+    if (aStruct->TransformPersistence().Flags != Graphic3d_TMF_None)
     {
       continue;
     }
 
     // use camera projection to find gravity point
-    aBox.Get (Xmin, Ymin, Zmin,
-              Xmax, Ymax, Zmax);
+    Xmin = (Standard_Real )aBox.CornerMin().x();
+    Ymin = (Standard_Real )aBox.CornerMin().y();
+    Zmin = (Standard_Real )aBox.CornerMin().z();
+    Xmax = (Standard_Real )aBox.CornerMax().x();
+    Ymax = (Standard_Real )aBox.CornerMax().y();
+    Zmax = (Standard_Real )aBox.CornerMax().z();
     gp_Pnt aPnts[THE_NB_BOUND_POINTS] =
     {
       gp_Pnt (Xmin, Ymin, Zmin), gp_Pnt (Xmin, Ymin, Zmax),
@@ -2228,21 +2238,10 @@ void V3d_View::Gravity (Standard_Real& theX,
 
   if (aNbPoints == 0)
   {
-    for (Graphic3d_MapIteratorOfMapOfStructure aStructIter (aSetOfStructures);
-         aStructIter.More(); aStructIter.Next())
+    // fallback - just use bounding box of entire scene
+    Bnd_Box aBox = myView->MinMaxValues (Standard_True);
+    if (!aBox.IsVoid())
     {
-      const Handle(Graphic3d_Structure)& aStruct = aStructIter.Key();
-      if (aStruct->IsEmpty())
-      {
-        continue;
-      }
-
-      Bnd_Box aBox = aStruct->MinMaxValues();
-      if (aBox.IsVoid() || aStruct->IsInfinite())
-      {
-        continue;
-      }
-
       aBox.Get (Xmin, Ymin, Zmin,
                 Xmax, Ymax, Zmax);
       gp_Pnt aPnts[THE_NB_BOUND_POINTS] =