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This commit is contained in:
Gabriele Cosmo
2016-06-08 15:09:25 +02:00
parent b97f8d0df7
commit aaa409b6ee
2922 changed files with 55107 additions and 81674 deletions
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source/visualization/OpenInventor/src/G4OpenInventorSceneHandler.cc
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// This code implementation is the intellectual property of
// the RD44 GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4OpenInventorSceneHandler.cc,v 1.3 1999/05/12 14:01:00 barrand Exp $
// GEANT4 tag $Name: geant4-00-01 $
//
//
// Jeff Kallenbach 01 Aug 1996
// OpenInventor stored scene - creates OpenInventor display lists.
#ifdef G4VIS_BUILD_OI_DRIVER
#include <Inventor/SoPath.h>
#include <Inventor/SoNodeKitPath.h>
#include <Inventor/nodes/SoCoordinate3.h>
#include <Inventor/nodes/SoCoordinate4.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoDrawStyle.h>
#include <Inventor/nodes/SoMaterial.h>
#include <Inventor/nodes/SoLineSet.h>
#include <Inventor/actions/SoWriteAction.h>
#include <Inventor/nodes/SoCube.h>
#include <Inventor/nodes/SoSphere.h>
#include <Inventor/nodes/SoCylinder.h>
#include <Inventor/nodes/SoFont.h>
#include <Inventor/fields/SoMFString.h>
#include <Inventor/nodes/SoText2.h>
#include <Inventor/nodes/SoFaceSet.h>
#include <Inventor/nodes/SoNormal.h>
#include <Inventor/nodes/SoNormalBinding.h>
#include <Inventor/nodes/SoComplexity.h>
#include <Inventor/nodes/SoNurbsSurface.h>
#include <Inventor/nodes/SoTranslation.h>
#include <Inventor/nodes/SoMatrixTransform.h>
#include <Inventor/nodes/SoTransform.h>
#include <Inventor/nodes/SoResetTransform.h>
#include <HEPVis/nodes/SoG4Box.h>
#include <HEPVis/nodes/SoG4Tubs.h>
#include <HEPVis/nodes/SoG4Cons.h>
#include <HEPVis/nodes/SoG4Trd.h>
#include <HEPVis/nodes/SoG4Trap.h>
#include <HEPVis/nodekits/SoDetectorTreeKit.h>
#include "G4NURBS.hh"
#include "G4OpenInventor.hh"
#include "G4OpenInventorSceneHandler.hh"
#include "G4OpenInventorViewer.hh"
#include "G4OpenInventorTransform3D.hh"
#include "G4ThreeVector.hh"
#include "G4Point3D.hh"
#include "G4Normal3D.hh"
#include "G4Transform3D.hh"
#include "G4Polyline.hh"
#include "G4Text.hh"
#include "G4Circle.hh"
#include "G4Square.hh"
#include "G4Polyhedron.hh"
#include "G4PhysicalVolumeModel.hh"
#include "G4ModelingParameters.hh"
#include "G4VPhysicalVolume.hh"
#include "G4LogicalVolume.hh"
#include "G4Material.hh"
#include "G4VisAttributes.hh"
typedef SoDetectorTreeKit SoG4DetectorTreeKit;
G4Point3D translation;
inline static unsigned pSolidHashFun
(const G4OpenInventorSceneHandler::G4VSolidPointer& pSolid) {
return (unsigned)pSolid;
}
inline static unsigned pVPhysicalVolumeHashFun
(const G4OpenInventorSceneHandler::G4VPhysicalVolumePointer & volume) {
return (unsigned)(unsigned long)volume;
}
G4OpenInventorSceneHandler::G4OpenInventorSceneHandler (G4OpenInventor& system,
const G4String& name)
:G4VSceneHandler (system, fSceneIdCount++, name)
,fSolidDictionary (pSolidHashFun)
,SeparatorSet(pVPhysicalVolumeHashFun)
,root(NULL)
,staticRoot(NULL)
,transientRoot(NULL)
{
//
root = new SoSeparator;
root->ref();
root->setName("Root");
//
staticRoot = new SoSeparator;
staticRoot->setName("StaticRoot");
root->addChild(staticRoot);
//
transientRoot = new SoSeparator;
transientRoot->setName("TransientRoot");
root->addChild(transientRoot);
//
fSceneCount++;
}
G4OpenInventorSceneHandler::~G4OpenInventorSceneHandler ()
{
root->unref();
fSceneCount--;
}
//
// Method for handling G4Polyline objects (from tracking or wireframe).
//
void G4OpenInventorSceneHandler::AddPrimitive (const G4Polyline& line) {
G4int nPoints = line.entries();
SbVec3f* pCoords = new SbVec3f[nPoints];
SoCoordinate3 *polyCoords = new SoCoordinate3;
SoDrawStyle *drawStyle = new SoDrawStyle;
SoLineSet *pLine = new SoLineSet;
for (G4int iPoint = 0; iPoint < nPoints ; iPoint++) {
pCoords[iPoint].setValue(line(iPoint).x(),
line(iPoint).y(),
line(iPoint).z());
}
//
// Color
//
SoMaterial *pMaterial = new SoMaterial;
const G4Colour& c = GetColour (line);
pMaterial->diffuseColor.setValue(c.GetRed (), c.GetGreen (), c.GetBlue ());
currentSeparator->addChild(pMaterial);
//
// Point Set
//
polyCoords->point.setValues(0,nPoints,pCoords);
currentSeparator->addChild(polyCoords);
//
// Wireframe
//
drawStyle->style = SoDrawStyle::LINES;
currentSeparator->addChild(drawStyle);
#ifdef INVENTOR2_0
pLine->numVertices.setValues(0,1,(const long *)&nPoints);
#else
pLine->numVertices.setValues(0,1,&nPoints);
#endif
currentSeparator->addChild(pLine);
delete [] pCoords;
}
// ********* NOTE ********* NOTE ********* NOTE ********* NOTE *********
//
// This method (Text) has not been tested, as it is
// innaccessible from the menu in the current configuration
//
// ********* NOTE ********* NOTE ********* NOTE ********* NOTE *********
//
// Method for handling G4Text objects
//
void G4OpenInventorSceneHandler::AddPrimitive (const G4Text& text) {
//
// Color
//
SoMaterial *pMaterial = new SoMaterial;
const G4Colour& c = GetTextColour (text);
pMaterial->diffuseColor.setValue(c.GetRed (), c.GetGreen (), c.GetBlue ());
//pMaterial->diffuseColor.setValue(1.0, 0.0, 1.0); // Magenta so we can see
currentSeparator->addChild(pMaterial);
//
// Font
//
SoFont *g4Font = new SoFont();
g4Font->size = 20.0;
currentSeparator->addChild(g4Font);
//
// Text
//
SoMFString *tString = new SoMFString;
tString->setValue("This is Text");
SoText2 *g4String = new SoText2();
g4String->spacing = 2.0;
g4String->justification = SoText2::LEFT;
currentSeparator->addChild(g4String);
}
//
// Method for handling G4Circle objects
//
void G4OpenInventorSceneHandler::AddPrimitive (const G4Circle& circle) {
//
// Color
//
SoMaterial *pMaterial = new SoMaterial;
const G4Colour& c = GetColour (circle);
pMaterial->diffuseColor.setValue(c.GetRed (), c.GetGreen (), c.GetBlue ());
currentSeparator->addChild(pMaterial);
//
// Dimensions
//
G4double userSpecified = circle.GetWorldSize() || circle.GetScreenSize();
const G4VMarker& defaultMarker =
fpViewer -> GetViewParameters().GetDefaultMarker();
G4double size = GetMarkerSize ( circle );
//
// Position
//
const G4Point3D cCtr = circle.GetPosition();
SoTranslation *cTrans = new SoTranslation;
cTrans->translation.setValue(cCtr.x(),cCtr.y(),cCtr.z());
currentSeparator->addChild(cTrans);
//
// Sphere
//
SoSphere *g4Sphere = new SoSphere();
g4Sphere->radius = size;
currentSeparator->addChild(g4Sphere);
}
//
// Method for handling G4Square objects - defaults to wireframe
//
void G4OpenInventorSceneHandler::AddPrimitive (const G4Square& Square) {
//
// Color
//
SoMaterial *pMaterial = new SoMaterial;
const G4Colour& c = GetColour (Square);
pMaterial->diffuseColor.setValue(c.GetRed (), c.GetGreen (), c.GetBlue ());
currentSeparator->addChild(pMaterial);
//
// Size
//
G4double sSize = GetMarkerSize(Square);
sSize = sSize * 2.0;
//
// Position
//
const G4Point3D sOrig = Square.GetPosition();
SoTranslation *sTrans = new SoTranslation;
sTrans->translation.setValue(sOrig.x(),sOrig.y(),sOrig.z());
currentSeparator->addChild(sTrans);
SoCube *g4Square = new SoCube();
g4Square->width = sSize;
g4Square->height = sSize;
g4Square->depth = sSize;
currentSeparator->addChild(g4Square);
}
//
// Method for handling G4Polyhedron objects for drawing solids.
//
void G4OpenInventorSceneHandler::AddPrimitive (const G4Polyhedron& polyhedron) {
#define MAXPOLYH 32767
//
// Assume all facets are convex quadrilaterals.
//
SbVec3f* polyVerts = new SbVec3f[MAXPOLYH*4];
G4int* numPolyVert = new G4int [MAXPOLYH];
SbVec3f* polyNorms = new SbVec3f[MAXPOLYH];
//
// Loop through the G4Facets...
//
G4int vertIdx = 0, polyIdx = 0;
G4bool notLastFace;
G4Normal3D SurfaceUnitNormal;
do {
//
// First, find surface normal for the facet...
//
notLastFace = polyhedron.GetNextUnitNormal (SurfaceUnitNormal);
//
// Second, set the normal for all vertices in the facet...
//
polyNorms[polyIdx].setValue(SurfaceUnitNormal.x(),
SurfaceUnitNormal.y(),
SurfaceUnitNormal.z());
//
// Loop through the four edges of each G4Facet...
//
G4int faceIdx = 0;
G4bool notLastEdge;
G4Point3D vertex;
G4int edgeFlag=1;
do {
notLastEdge = polyhedron.GetNextVertex (vertex, edgeFlag);
vertex.transform (*fpObjectTransformation);
polyVerts[vertIdx].setValue(vertex.x(),
vertex.y(),
vertex.z());
vertIdx++;
faceIdx++;
} while (notLastEdge);
numPolyVert[polyIdx] = faceIdx;
polyIdx++;
} while ((notLastFace)&&(polyIdx < MAXPOLYH));
//
// Store Norms
//
SoNormal *pNorms = new SoNormal;
pNorms->vector.setValues(0,polyIdx,polyNorms);
currentSeparator->addChild(pNorms);
SoNormalBinding *pNormalBinding = new SoNormalBinding;
pNormalBinding->value = SoNormalBinding::PER_FACE;
currentSeparator->addChild(pNormalBinding);
//
// Define Material
//
SoMaterial *pMaterial = new SoMaterial;
const G4Colour& c = GetColour (polyhedron);
pMaterial->diffuseColor.setValue(c.GetRed (), c.GetGreen (), c.GetBlue ());
currentSeparator->addChild(pMaterial);
//
// Store Vertex Coordinates
//
SoCoordinate3 *polyCoords = new SoCoordinate3;
polyCoords->point.setValues(0,vertIdx,polyVerts);
currentSeparator->addChild(polyCoords);
//
// Define FaceSet
//
SoFaceSet *pFaceSet = new SoFaceSet;
#ifdef INVENTOR2_0
pFaceSet->numVertices.setValues(0,polyIdx,(const long *)numPolyVert);
#else
pFaceSet->numVertices.setValues(0,polyIdx,numPolyVert);
#endif
currentSeparator->addChild(pFaceSet);
//
// Clean-up
//
delete [] polyVerts;
delete [] numPolyVert;
delete [] polyNorms;
}
//
// Method for handling G4NURBS objects for drawing solids.
// Knots and Ctrl Pnts MUST be arrays of GLfloats.
//
void G4OpenInventorSceneHandler::AddPrimitive (const G4NURBS& nurb) {
G4float *u_knot_array, *u_knot_array_ptr;
u_knot_array = u_knot_array_ptr = new G4float [nurb.GetnbrKnots(G4NURBS::U)];
G4NURBS::KnotsIterator u_iterator (nurb, G4NURBS::U);
while (u_iterator.pick (u_knot_array_ptr++));
G4float *v_knot_array, *v_knot_array_ptr;
v_knot_array = v_knot_array_ptr = new G4float [nurb.GetnbrKnots(G4NURBS::V)];
G4NURBS::KnotsIterator v_iterator (nurb, G4NURBS::V);
while (v_iterator.pick (v_knot_array_ptr++));
G4float *ctrl_pnt_array, *ctrl_pnt_array_ptr;
ctrl_pnt_array = ctrl_pnt_array_ptr =
new G4float [nurb.GettotalnbrCtrlPts () * G4NURBS::NofC*sizeof(G4float)];
G4NURBS::CtrlPtsCoordsIterator c_p_iterator (nurb);
while (c_p_iterator.pick (ctrl_pnt_array_ptr++));
SoSeparator *surfSep = new SoSeparator();
//
// Color
//
SoMaterial *pMaterial = new SoMaterial;
const G4Colour& c = GetColour (nurb);
pMaterial->diffuseColor.setValue(c.GetRed (), c.GetGreen (), c.GetBlue ());
surfSep->addChild(pMaterial);
//
// Set up NURBS
//
SoComplexity *complexity = new SoComplexity;
SoCoordinate4 *ctlPts = new SoCoordinate4;
SoNurbsSurface *oi_nurb = new SoNurbsSurface;
complexity->value = 0.6;
G4int nPoints = nurb.GettotalnbrCtrlPts ();
SbVec4f* points = new SbVec4f[nPoints];
for (G4int iPoint = 0; iPoint < nPoints ; iPoint++) {
points[iPoint].setValue(
ctrl_pnt_array[iPoint*4 + 0],
ctrl_pnt_array[iPoint*4 + 1],
ctrl_pnt_array[iPoint*4 + 2],
ctrl_pnt_array[iPoint*4 + 3]);
}
ctlPts->point.setValues (0,nPoints,points);
oi_nurb->numUControlPoints = nurb.GetnbrCtrlPts(G4NURBS::U);
oi_nurb->numVControlPoints = nurb.GetnbrCtrlPts(G4NURBS::V);
oi_nurb->uKnotVector.setValues(0,nurb.GetnbrKnots(G4NURBS::U),u_knot_array);
oi_nurb->vKnotVector.setValues(0,nurb.GetnbrKnots(G4NURBS::V),v_knot_array);
surfSep->addChild(complexity);
surfSep->addChild(ctlPts);
surfSep->addChild(oi_nurb);
currentSeparator->addChild(surfSep);
//
// Clean-up
//
delete [] u_knot_array;
delete [] v_knot_array;
delete [] ctrl_pnt_array;
delete [] points;
}
//
// Generates prerequisites for primitives
//
void G4OpenInventorSceneHandler::BeginPrimitives
(const G4Transform3D& objectTransformation) {
G4VSceneHandler::BeginPrimitives (objectTransformation);
// Store away for future use, e.g.,
// AddPrimitive (const G4Polyhedron& polyhedron).
//
fpObjectTransformation = &objectTransformation;
// The coming primitive is either:
// a placed detector-type element whose destination
// in the Scene Database has been predetermined for it.
// In that case this routinde does absolutely nothing.
// Or: an unplaced, transient, marker-type of object
// which needs to be properly placed, and whose
// destination (for now) is the root of the scene
// database. For these types of objects, execute the
// following code:
//
if (fReadyForTransients) {
//
// set the destination to "transientRoot"
//
currentSeparator=transientRoot;
//
// place the transient object:
//
G4OpenInventorTransform3D oiTran (objectTransformation);
SoSFMatrix *oiMat = oiTran.GetOIMatrix();
SoMatrixTransform *xform = new SoMatrixTransform;
xform->matrix.setValue(oiMat->getValue());
//
// add a transform.
//
currentSeparator->addChild(new SoResetTransform);
currentSeparator->addChild(xform);
}
}
void G4OpenInventorSceneHandler::EndPrimitives () {
G4VSceneHandler::EndPrimitives ();
}
void G4OpenInventorSceneHandler::EndModeling () {
}
void G4OpenInventorSceneHandler::ClearStore () {
staticRoot->removeAllChildren();
transientRoot->removeAllChildren();
}
void G4OpenInventorSceneHandler::ClearTransientStore () {
transientRoot->removeAllChildren();
}
void G4OpenInventorSceneHandler::RequestPrimitives (const G4VSolid& solid) {
// Stop-gap solution for display List re-use.
// A proper implementation would use geometry hierarchy.
//
G4VSceneHandler::RequestPrimitives (solid);
}
G4int G4OpenInventorSceneHandler::fSceneIdCount = 0;
G4int G4OpenInventorSceneHandler::fSceneCount = 0;
//
// These methods add primitives using the HEPVis classes
//
void G4OpenInventorSceneHandler::AddThis (const G4Box & Box) {
SoCube *g4Box = new SoCube();
g4Box->width =2*Box.GetXHalfLength();
g4Box->height=2*Box.GetYHalfLength();
g4Box->depth =2*Box.GetZHalfLength();
currentSeparator->addChild(g4Box);
}
void G4OpenInventorSceneHandler::AddThis (const G4Tubs & Tubs) {
SoG4Tubs *g4Tubs = new SoG4Tubs();
g4Tubs->pRMin = Tubs.GetRMin();
g4Tubs->pRMax = Tubs.GetRMax();
g4Tubs->pDz = Tubs.GetDz();
g4Tubs->pSPhi = Tubs.GetSPhi();
g4Tubs->pDPhi = Tubs.GetDPhi();
currentSeparator->addChild(g4Tubs);
}
void G4OpenInventorSceneHandler::AddThis (const G4Cons &cons) {
SoG4Cons *g4Cons = new SoG4Cons();
g4Cons->fRmin1 = cons.GetRmin1();
g4Cons->fRmin2 = cons.GetRmin2();
g4Cons->fRmax1 = cons.GetRmax1();
g4Cons->fRmax2 = cons.GetRmax2();
g4Cons->fDz = cons.GetDz();
g4Cons->fSPhi = cons.GetSPhi();
g4Cons->fDPhi = cons.GetDPhi();
currentSeparator->addChild(g4Cons);
}
void G4OpenInventorSceneHandler::AddThis (const G4Trap &trap) {
G4ThreeVector SymAxis=trap.GetSymAxis();
SoG4Trap *g4Trap = new SoG4Trap();
g4Trap->pDz = trap.GetZHalfLength();
g4Trap->pPhi = atan2(SymAxis(kYAxis),SymAxis(kXAxis));
g4Trap->pTheta = acos(SymAxis(kZAxis));
g4Trap->pDy1 = trap.GetYHalfLength1();
g4Trap->pDx1 = trap.GetXHalfLength1();
g4Trap->pDx2 = trap.GetXHalfLength2();
g4Trap->pDy2 = trap.GetYHalfLength2();
g4Trap->pDx3 = trap.GetXHalfLength3();
g4Trap->pDx4 = trap.GetXHalfLength4();
currentSeparator->addChild(g4Trap);
}
void G4OpenInventorSceneHandler::AddThis (const G4Trd &trd) {
SoG4Trd *g4Trd = new SoG4Trd();
g4Trd->fDx1 = trd.GetXHalfLength1();
g4Trd->fDx2 = trd.GetXHalfLength2();
g4Trd->fDy1 = trd.GetYHalfLength1();
g4Trd->fDy2 = trd.GetYHalfLength2();
g4Trd->fDz = trd.GetZHalfLength();
currentSeparator->addChild(g4Trd);
}
void G4OpenInventorSceneHandler::PreAddThis
(const G4Transform3D& objectTransformation,
const G4VisAttributes& visAttribs) {
// This assumes that it is a "Pre" to the "Add" of a
// G4VPhysicalVolume. This is true at present, but beware! We
// might have to think about the cast in the following code.
G4VSceneHandler::PreAddThis (objectTransformation, visAttribs);
// Stores arguments away for future use, e.g., AddPrimitives.
// This routines prepares to add solids to the scene database.
// We are expecting two
// kinds of solids: leaf parts and non-leaf parts. For non-leaf parts,
// we create a detector tree kit. This has two separators. The solid itself
// goes in the preview separator, the full separator is forseen for daughters.
// This separator is not only created--it is also put in a dictionary for
// future use by the leaf part.
// For leaf parts, we first locate the mother volume and find its separator
// through the dictionary.
// The private member currentSeparator is set to the proper location on in the
// scene database so that when the solid is actually added (in addthis), it is
// put in the right place.
// First find the color attributes.
//
const G4VisAttributes* pVisAttribs =
fpViewer -> GetApplicableVisAttributes (&visAttribs);
const G4Colour& g4Col = pVisAttribs -> GetColour ();
const double red=g4Col.GetRed ();
const double green=g4Col.GetGreen ();
const double blue=g4Col.GetBlue ();
//
// This block of code is executed for non-leaf parts:
//
if (fpCurrentLV->GetNoDaughters()!=0 ||
fpCurrentPV->IsReplicated()) {
//
// Make the detector tree kit:
//
SoG4DetectorTreeKit* g4DetectorTreeKit = new SoG4DetectorTreeKit();
SoSeparator* previewSeparator =
(SoSeparator*) g4DetectorTreeKit->getPart("previewSeparator",TRUE);
SoSeparator* fullSeparator =
(SoSeparator*) g4DetectorTreeKit->getPart("fullSeparator", TRUE);
previewSeparator->renderCaching=SoSeparator::OFF;
fullSeparator->renderCaching=SoSeparator::OFF;
SoMaterial* matColor = (SoMaterial*)
g4DetectorTreeKit->getPart("appearance.material", TRUE);
matColor->diffuseColor.setValue(red,green,blue);
//
// Add the full separator to the dictionary; it is indexed by the
// address of the physical volume!
//
SeparatorSet[fpCurrentPV]=fullSeparator;
//
// Find out where to add this volume. This means locating its mother.
// If no mother can be found, it goes under root.
//
G4VPhysicalVolume* MotherVolume = fpCurrentPV->GetMother();
while (MotherVolume) {
if (SeparatorSet.contains(MotherVolume)) {
SeparatorSet[MotherVolume]->addChild(g4DetectorTreeKit);
break;
}
else {
G4cerr << "OIScene non-leaf protocol error. Mother volume " <<
MotherVolume->GetName() << " missing." << endl;
G4cerr << " Daughter volume was: "
<< fpCurrentPV->GetName()
<< endl;
}
MotherVolume=MotherVolume->GetMother();
}
if (!MotherVolume) staticRoot->addChild(g4DetectorTreeKit);
currentSeparator = previewSeparator;
}
//
// This block of code is executed for leaf parts.
//
else {
//
// Locate the mother volume and find it's corresponding full separator
//
currentSeparator = NULL;
G4VPhysicalVolume* MotherVolume = fpCurrentPV->GetMother();
while (MotherVolume) {
if (SeparatorSet.contains(MotherVolume)) {
currentSeparator=SeparatorSet[MotherVolume];
break;
}
else {
G4cerr << "OIScene leaf protocol error. Mother volume " <<
MotherVolume->GetName() << " missing." << endl;
G4cerr << " Daughter volume was: "
<< fpCurrentPV->GetName()
<< endl;
}
MotherVolume = MotherVolume->GetMother();
}
//
// If the mother volume has no full separator, then the solid and its
// attributes will go under "staticRoot"
//
if (!currentSeparator) {
SoMaterial* newColor = new SoMaterial();
newColor->diffuseColor.setValue(red,green,blue);
staticRoot->addChild(newColor);
currentSeparator=staticRoot;
}
else {
SoMaterial* newColor = new SoMaterial();
newColor->diffuseColor.setValue(red,green,blue);
currentSeparator->addChild(newColor);
}
}
//
// Set up the geometrical transformation for the coming
//
G4OpenInventorTransform3D oiTran (objectTransformation);
SoSFMatrix* oiMat = oiTran.GetOIMatrix();
SoMatrixTransform* xform = new SoMatrixTransform;
xform->matrix.setValue(oiMat->getValue());
currentSeparator->addChild(new SoResetTransform);
currentSeparator->addChild(xform);
}
G4double G4OpenInventorSceneHandler::GetMarkerSize ( const G4VMarker& mark )
{
//----- return value ( marker radius in 3d units)
G4double size = 1.0 ; // initialization
//----- parameters to calculate 3d size from 2d size
const double HALF_SCREEN_SIZE_2D = 300.0 ; // pixels
double zoom_factor = fpViewer->GetViewParameters().GetZoomFactor() ;
if ( zoom_factor <= 0.0 ) { zoom_factor = 1.0 ; }
double extent_radius_3d = GetScene()->GetExtent().GetExtentRadius() ;
if ( extent_radius_3d <= 0.0 ) { extent_radius_3d = 1.0 ; }
//----- get marker radius in 3D units
if ( size = mark.GetWorldSize() ) {
// get mark radius in 3D units
size = 0.5 * mark.GetWorldSize() ;
} else if ( size = mark.GetScreenSize() ) {
// local
double mark_radius_2d = 0.5 * mark.GetScreenSize() ;
// get mark radius in 3D units
size \
= extent_radius_3d * ( mark_radius_2d / HALF_SCREEN_SIZE_2D );
size *= zoom_factor ;
} else {
// local
double mark_radius_2d \
= fpViewer->GetViewParameters().GetDefaultMarker().GetScreenSize();
// get mark radius in 3D units
size \
= extent_radius_3d * ( mark_radius_2d / HALF_SCREEN_SIZE_2D );
size *= zoom_factor ;
}
//----- global rescaling
size *= fpViewer->GetViewParameters().GetGlobalMarkerScale();
//----- return size
return size ;
} // G4OpenInventorSceneHandler::GetMarkerSize ()
#endif