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0026195: Visualization - optimize selection algorithms

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- initial transformation of triangulation is now applied to selecting frustum;
- switched from NCollection_Vec3 to gp collections to avoid conversions and usage of macros;
- calculation of frustum was refactored to reduce its build time;
- double pixel tolerances for selection were replaced by integer ones;
- switched to splitting along the main axis only in SelectMgr BVH selection primitive sets.
This commit is contained in:
vpa
2015-08-31 10:29:53 +03:00
committed by bugmaster
parent 646529083a
commit 3bf9a45f7a
50 changed files with 1057 additions and 978 deletions
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39
src/SelectMgr/SelectMgr_BaseFrustum.hxx
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@@ -16,8 +16,6 @@
#ifndef _SelectMgr_BaseFrustum_HeaderFile
#define _SelectMgr_BaseFrustum_HeaderFile
#include <Bnd_Box.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pln.hxx>
@@ -67,7 +65,7 @@ public:
//! @return current camera world view projection transformation state
Standard_EXPORT const Graphic3d_WorldViewProjState& WorldViewProjState() const;
Standard_EXPORT void SetPixelTolerance (const Standard_Real theTol);
Standard_EXPORT void SetPixelTolerance (const Standard_Integer theTol);
Standard_EXPORT void SetWindowSize (const Standard_Integer theWidth,
const Standard_Integer theHeight);
@@ -97,14 +95,19 @@ public:
//! Builds selecting volumes set according to polyline points
virtual void Build (const TColgp_Array1OfPnt2d& /*thePoints*/) {}
virtual NCollection_Handle<SelectMgr_BaseFrustum> Transform (const gp_Trsf& /*theTrsf*/) { return NULL; }
//! IMPORTANT: Makes sense only for frustum built on a single point!
//! IMPORTANT: Scaling makes sense only for frustum built on a single point!
//! Note that this method does not perform any checks on type of the frustum.
//! Returns a copy of the frustum resized according to the scale factor given
virtual NCollection_Handle<SelectMgr_BaseFrustum> Scale (const Standard_Real /*theScaleFactor*/) { return NULL; }
//! and transforms it using the matrix given.
//! There are no default parameters, but in case if:
//! - transformation only is needed: @theScaleFactor must be initialized as any negative value;
//! - scale only is needed: @theTrsf must be set to gp_Identity.
Standard_EXPORT virtual NCollection_Handle<SelectMgr_BaseFrustum> ScaleAndTransform (const Standard_Integer /*theScaleFactor*/,
const gp_Trsf& /*theTrsf*/) { return NULL; }
//! SAT intersection test between defined volume and given axis-aligned box
Standard_EXPORT virtual Standard_Boolean Overlaps (const BVH_Box<Standard_Real, 3>& theBndBox,
Standard_EXPORT virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theBoxMin,
const SelectMgr_Vec3& theBoxMax,
Standard_Real& theDepth);
//! Returns true if selecting volume is overlapped by axis-aligned bounding box
@@ -114,19 +117,25 @@ public:
Standard_Boolean* theInside = NULL);
//! Intersection test between defined volume and given point
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePt,
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt,
Standard_Real& theDepth);
//! Intersection test between defined volume and given point
//! Does not perform depth calculation, so this method is defined as
//! helper function for inclusion test. Therefore, its implementation
//! makes sense only for rectangular frustum with box selection mode activated.
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt);
//! SAT intersection test between defined volume and given ordered set of points,
//! representing line segments. The test may be considered of interior part or
//! boundary line defined by segments depending on given sensitivity type
Standard_EXPORT virtual Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPts,
Standard_EXPORT virtual Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPnts,
Select3D_TypeOfSensitivity theSensType,
Standard_Real& theDepth);
//! Checks if line segment overlaps selecting frustum
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePt1,
const gp_Pnt& thePt2,
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
const gp_Pnt& thePnt2,
Standard_Real& theDepth);
//! SAT intersection test between defined volume and given triangle. The test may
@@ -142,7 +151,7 @@ public:
//! screen point and given point theCOG
Standard_EXPORT virtual Standard_Real DistToGeometryCenter (const gp_Pnt& theCOG);
Standard_EXPORT virtual SelectMgr_Vec3 DetectedPoint (const Standard_Real theDepth) const;
Standard_EXPORT virtual gp_Pnt DetectedPoint (const Standard_Real theDepth) const;
//! Checks if the point of sensitive in which selection was detected belongs
//! to the region defined by clipping planes
@@ -152,8 +161,8 @@ public:
DEFINE_STANDARD_RTTI(SelectMgr_BaseFrustum, Standard_Transient)
protected:
Standard_Real myPixelTolerance; //!< Pixel tolerance
Standard_Boolean myIsOrthographic; //!< Defines if current camera is orthographic
Standard_Integer myPixelTolerance; //!< Pixel tolerance
Standard_Boolean myIsOrthographic; //!< Defines if current camera is orthographic
Handle(SelectMgr_FrustumBuilder) myBuilder; //!< A tool implementing methods for volume build
};