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77 lines
3.5 KiB
C++
77 lines
3.5 KiB
C++
// Copyright (c) 2013 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 _StdPrs_ToolTriangulatedShape_HeaderFile
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#define _StdPrs_ToolTriangulatedShape_HeaderFile
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#include <Poly_Triangulation.hxx>
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#include <Prs3d_Drawer.hxx>
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#include <Standard.hxx>
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#include <Standard_Macro.hxx>
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#include <TColgp_Array1OfDir.hxx>
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class TopoDS_Face;
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class TopLoc_Location;
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class TopoDS_Shape;
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class Prs3d_Drawer;
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class Poly_Triangulation;
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class Poly_Connect;
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class StdPrs_ToolTriangulatedShape
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{
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public:
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//! Similar to BRepTools::Triangulation() but without extra checks.
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//! @return true if all faces within shape are triangulated.
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Standard_EXPORT static Standard_Boolean IsTriangulated (const TopoDS_Shape& theShape);
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//! Checks back faces visibility for specified shape (to activate back-face culling). <br>
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//! @return true if shape is closed manifold Solid or compound of such Solids. <br>
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Standard_EXPORT static Standard_Boolean IsClosed (const TopoDS_Shape& theShape);
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//! Evaluate normals for a triangle of a face.
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//! @param theFace [in] the face.
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//! @param thePolyConnect [in] the definition of a face triangulation.
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//! @param theNormal [out] the array of normals for each triangle.
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Standard_EXPORT static void Normal (const TopoDS_Face& theFace,
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Poly_Connect& thePolyConnect,
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TColgp_Array1OfDir& theNormals);
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//! Checks whether the shape is properly triangulated for a given display settings.
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//! @param theShape [in] the shape.
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//! @param theDrawer [in] the display settings.
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Standard_EXPORT static Standard_Boolean IsTessellated (const TopoDS_Shape& theShape,
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const Handle(Prs3d_Drawer)& theDrawer);
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//! Validates triangulation within the shape and performs tessellation if necessary.
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//! @param theShape [in] the shape.
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//! @param theDrawer [in] the display settings.
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//! @return true if tesselation was recomputed and false otherwise.
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Standard_EXPORT static Standard_Boolean Tessellate (const TopoDS_Shape& theShape,
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const Handle(Prs3d_Drawer)& theDrawer);
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//! If presentation has own deviation coefficient and IsAutoTriangulation() is true,
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//! function will compare actual coefficients with previous values and will clear triangulation on their change
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//! (regardless actual tessellation quality).
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//! Function is placed here for compatibility reasons - new code should avoid using IsAutoTriangulation().
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//! @param theShape [in] the shape
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//! @param theDrawer [in] the display settings
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//! @param theToResetCoeff [in] updates coefficients in theDrawer to actual state to avoid redundant recomputations
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Standard_EXPORT static void ClearOnOwnDeflectionChange (const TopoDS_Shape& theShape,
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const Handle(Prs3d_Drawer)& theDrawer,
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const Standard_Boolean theToResetCoeff);
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};
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#endif
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