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https://git.dev.opencascade.org/repos/occt.git
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3bf9a45f7a
- 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.
98 lines
3.9 KiB
C++
98 lines
3.9 KiB
C++
// Created on: 2014-11-24
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// Created by: Varvara POSKONINA
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// Copyright (c) 2005-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _SelectMgr_FrustumBuilder_HeaderFile
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#define _SelectMgr_FrustumBuilder_HeaderFile
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#include <Standard_Type.hxx>
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#include <Graphic3d_Camera.hxx>
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#include <Graphic3d_WorldViewProjState.hxx>
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#include <Precision.hxx>
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#include <SelectMgr_VectorTypes.hxx>
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//! The purpose of this class is to provide unified interface for building
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//! selecting frustum depending on current camera projection and orientation
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//! matrices, window size and viewport parameters.
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class SelectMgr_FrustumBuilder : public Standard_Transient
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{
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public:
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//! Creates new frustum builder with empty matrices
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SelectMgr_FrustumBuilder();
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//! Stores current world view transformation matrix
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Standard_EXPORT void SetWorldViewMatrix (const Graphic3d_Mat4d& theWorldViewMatrix);
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//! @return current world view transformation matrix
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Standard_EXPORT const Graphic3d_Mat4d& WorldViewMatrix() const;
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//! Stores current projection matrix
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Standard_EXPORT void SetProjectionMatrix (const Graphic3d_Mat4d& theProjection);
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//! @return current projection matrix
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Standard_EXPORT const Graphic3d_Mat4d& ProjectionMatrix() const;
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//! Stores current world view projection matrix state for the orientation and projection matrices
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Standard_EXPORT void SetWorldViewProjState (const Graphic3d_WorldViewProjState& theState);
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//! @return current world view projection state
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Standard_EXPORT const Graphic3d_WorldViewProjState& WorldViewProjState() const;
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//! Stores current window width and height
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Standard_EXPORT void SetWindowSize (const Standard_Integer theWidth,
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const Standard_Integer theHeight);
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//! Stores current viewport coordinates
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Standard_EXPORT void SetViewport (const Standard_Real theX,
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const Standard_Real theY,
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const Standard_Real theWidth,
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const Standard_Real theHeight);
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Standard_EXPORT void InvalidateViewport();
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//! Calculates signed distance between plane with equation
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//! theEq and point thePnt
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Standard_EXPORT Standard_Real SignedPlanePntDist (const SelectMgr_Vec3& theEq,
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const SelectMgr_Vec3& thePnt) const;
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//! Projects 2d screen point onto view frustum plane:
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//! theZ = 0 - near plane,
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//! theZ = 1 - far plane
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Standard_EXPORT gp_Pnt ProjectPntOnViewPlane (const Standard_Real& theX,
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const Standard_Real& theY,
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const Standard_Real& theZ) const;
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DEFINE_STANDARD_RTTI(SelectMgr_FrustumBuilder, Standard_Transient)
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private:
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//! Unprojects point from NDC coords to 3d world space
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gp_Pnt unProject (const gp_Pnt& thePnt) const;
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private:
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Graphic3d_Mat4d myWorldView;
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Graphic3d_Mat4d myProjection;
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Graphic3d_WorldViewProjState myWorldViewProjState;
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Standard_Integer myWidth;
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Standard_Integer myHeight;
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NCollection_Vec4<Standard_Real> myViewport;
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Standard_Boolean myIsViewportSet;
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};
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DEFINE_STANDARD_HANDLE(SelectMgr_FrustumBuilder, Standard_Transient)
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#endif // _SelectMgr_FrustumBuilder_HeaderFile
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