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0032139: Visualization - support single-precision floating point data within Poly_Triangulation

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Introduced NCollection_AliasedArray collection defining a general byte array
to be aliased as array of elements of mutable type.

Poly_ArrayOfNodes specializes this interface for collecting 2d/3d points with single/double precision.
Poly_Triangulation relies on this new class for definition of 3D nodes and UV coordinates
using gp_Pnt and gp_Pnt2d by default as before.

RWGltf_CafReader now fills in triangulation using single precision by default (as stored in the file).
This commit is contained in:
kgv
2021-02-17 14:36:03 +03:00
committed by bugmaster
parent e44b849de9
commit 374dffea0b
14 changed files with 868 additions and 63 deletions
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61
src/Poly/Poly_ArrayOfUVNodes.cxx Normal file
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// Copyright (c) 2021 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <Poly_ArrayOfUVNodes.hxx>
// =======================================================================
// function : Poly_ArrayOfUVNodes
// purpose :
// =======================================================================
Poly_ArrayOfUVNodes::Poly_ArrayOfUVNodes (const Poly_ArrayOfUVNodes& theOther)
: NCollection_AliasedArray (theOther)
{
//
}
// =======================================================================
// function : ~Poly_ArrayOfUVNodes
// purpose :
// =======================================================================
Poly_ArrayOfUVNodes::~Poly_ArrayOfUVNodes()
{
//
}
// =======================================================================
// function : Assign
// purpose :
// =======================================================================
Poly_ArrayOfUVNodes& Poly_ArrayOfUVNodes::Assign (const Poly_ArrayOfUVNodes& theOther)
{
if (&theOther == this)
{
return *this;
}
if (myStride == theOther.myStride)
{
// fast copy
NCollection_AliasedArray::Assign (theOther);
return *this;
}
// slow copy
if (mySize != theOther.mySize) { throw Standard_DimensionMismatch ("Poly_ArrayOfUVNodes::Assign(), arrays have different sizes"); }
for (int anIter = 0; anIter < mySize; ++anIter)
{
const gp_Pnt2d aPnt = theOther.Value (anIter);
SetValue (anIter, aPnt);
}
return *this;
}