+++ /dev/null
-// Copyright (C) 2007-2024 CEA, EDF
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License, or (at your option) any later version.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
-//
-
-#ifndef __TRANSFORMEDTRIANGLEINLINE_HXX__
-#define __TRANSFORMEDTRIANGLEINLINE_HXX__
-
-// This file contains inline versions of some of the methods in the TransformedTriangle*.cxx files.
-// It replaces those methods if OPTIMIZE is defined.
-// NB : most of these methods have documentation in their corresponding .cxx - file.
-
-// ----------------------------------------------------------------------------------
-// Optimization methods. These are only defined and used if OPTIMIZE is defined.
-// -----------------------------------------------------------------------------------
-
-
-inline void TransformedTriangle::preCalculateTriangleSurroundsEdge()
-{
- for(TetraEdge edge = OX ; edge <= ZX ; edge = TetraEdge(edge + 1))
- {
- _triangleSurroundsEdgeCache[edge] = testTriangleSurroundsEdge(edge);
- }
-}
-
-
-// ----------------------------------------------------------------------------------
-// TransformedTriangle_math.cxx
-// ----------------------------------------------------------------------------------
-
-inline void TransformedTriangle::resetDoubleProducts(const TriSegment seg, const TetraCorner corner)
-{
- // set the three corresponding double products to 0.0
- static const DoubleProduct DOUBLE_PRODUCTS[12] =
- {
- C_YZ, C_ZX, C_XY, // O
- C_YZ, C_ZH, C_YH, // X
- C_ZX, C_ZH, C_XH, // Y
- C_XY, C_YH, C_XH // Z
- };
-
- for(int i = 0 ; i < 3 ; ++i) {
- const DoubleProduct dp = DOUBLE_PRODUCTS[3*corner + i];
-
- LOG(6, std::endl << "resetting inconsistent dp :" << dp << " for corner " << corner);
- _doubleProducts[8*seg + dp] = 0.0;
- };
-}
-
-inline double TransformedTriangle::calcStableC(const TriSegment seg, const DoubleProduct dp) const
-{
- return _doubleProducts[8*seg + dp];
-}
-
-inline double TransformedTriangle::calcStableT(const TetraCorner corner) const
-{
- // assert(_isTripleProductsCalculated);
- // assert(_validTP[corner]);
- return _tripleProducts[corner];
-}
-
-inline double TransformedTriangle::calcUnstableC(const TriSegment seg, const DoubleProduct dp) const
-{
-
- // find the points of the triangle
- // 0 -> P, 1 -> Q, 2 -> R
- const int pt1 = seg;
- const int pt2 = (seg + 1) % 3;
-
- // find offsets
- const int off1 = DP_OFFSET_1[dp];
- const int off2 = DP_OFFSET_2[dp];
-
- return _coords[5*pt1 + off1] * _coords[5*pt2 + off2] - _coords[5*pt1 + off2] * _coords[5*pt2 + off1];
-}
-
-// ----------------------------------------------------------------------------------
-// TransformedTriangle_intersect.cxx
-// ----------------------------------------------------------------------------------
-inline bool TransformedTriangle::testSurfaceEdgeIntersection(const TetraEdge edge) const
-{
- return _triangleSurroundsEdgeCache[edge] && testEdgeIntersectsTriangle(edge);
-}
-
-inline bool TransformedTriangle::testSegmentFacetIntersection(const TriSegment seg, const TetraFacet facet) const
-{
- return testFacetSurroundsSegment(seg, facet) && testSegmentIntersectsFacet(seg, facet);
-}
-
-inline bool TransformedTriangle::testSurfaceRayIntersection(const TetraCorner corner) const
-{
- return testTriangleSurroundsRay( corner ) && testSurfaceAboveCorner( corner );
-}
-
-inline bool TransformedTriangle::testCornerInTetrahedron(const TriCorner corner) const
-{
- const double pt[4] =
- {
- _coords[5*corner], // x
- _coords[5*corner + 1], // y
- _coords[5*corner + 2], // z
- _coords[5*corner + 3] // z
- };
-
- for(int i = 0 ; i < 4 ; ++i)
- {
- if(pt[i] < 0.0 || pt[i] > 1.0)
- {
- return false;
- }
- }
- return true;
-}
-
-inline bool TransformedTriangle::testCornerOnXYZFacet(const TriCorner corner) const
-{
-#if 0
- const double pt[4] =
- {
- _coords[5*corner], // x
- _coords[5*corner + 1], // y
- _coords[5*corner + 2], // z
- _coords[5*corner + 3] // h
- };
-#endif
- const double* pt = &_coords[5*corner];
-
- if(pt[3] != 0.0)
- {
- return false;
- }
-
- for(int i = 0 ; i < 3 ; ++i)
- {
- if(pt[i] < 0.0 || pt[i] > 1.0)
- {
- return false;
- }
- }
- return true;
-}
-
-inline bool TransformedTriangle::testCornerAboveXYZFacet(const TriCorner corner) const
-{
- const double x = _coords[5*corner];
- const double y = _coords[5*corner + 1];
- const double h = _coords[5*corner + 3];
- const double H = _coords[5*corner + 4];
-
- return h < 0.0 && H >= 0.0 && x >= 0.0 && y >= 0.0;
-
-}
-
-inline bool TransformedTriangle::testEdgeIntersectsTriangle(const TetraEdge edge) const
-{
-
- // assert(edge < H01);
-
- // correspondence edge - triple products
- // for edges OX, ..., ZX (Grandy, table III)
- static const TetraCorner TRIPLE_PRODUCTS[12] =
- {
- X, O, // OX
- Y, O, // OY
- Z, O, // OZ
- X, Y, // XY
- Y, Z, // YZ
- Z, X, // ZX
- };
-
- // Grandy, [16]
- const double t1 = calcStableT(TRIPLE_PRODUCTS[2*edge]);
- const double t2 = calcStableT(TRIPLE_PRODUCTS[2*edge + 1]);
-
- //? should equality with zero use epsilon?
- LOG(5, "testEdgeIntersectsTriangle : t1 = " << t1 << " t2 = " << t2 );
- return (t1*t2 <= 0.0) && !epsilonEqual(t1 - t2, 0.0); // tuleap26461
-}
-
-inline bool TransformedTriangle::testFacetSurroundsSegment(const TriSegment seg, const TetraFacet facet) const
-{
-#if 0
- const double signs[3] =
- {
- SIGN_FOR_SEG_FACET_INTERSECTION[3*facet],
- SIGN_FOR_SEG_FACET_INTERSECTION[3*facet + 1],
- SIGN_FOR_SEG_FACET_INTERSECTION[3*facet + 2]
- };
-#endif
-
- const double* signs = &SIGN_FOR_SEG_FACET_INTERSECTION[3*facet];
- const double c1 = signs[0]*calcStableC(seg, DP_FOR_SEG_FACET_INTERSECTION[3*facet]);
- const double c2 = signs[1]*calcStableC(seg, DP_FOR_SEG_FACET_INTERSECTION[3*facet + 1]);
- const double c3 = signs[2]*calcStableC(seg, DP_FOR_SEG_FACET_INTERSECTION[3*facet + 2]);
-
- return (c1*c3 > 0.0) && (c2*c3 > 0.0);
-}
-
-inline bool TransformedTriangle::testSegmentIntersectsFacet(const TriSegment seg, const TetraFacet facet) const
-{
- // use correspondence facet a = 0 <=> offset for coordinate a in _coords
- // and also correspondence segment AB => corner A
- const double coord1 = _coords[5*seg + facet];
- const double coord2 = _coords[5*( (seg + 1) % 3) + facet];
-
- //? should we use epsilon-equality here in second test?
- LOG(5, "coord1 : " << coord1 << " coord2 : " << coord2 );
-
- return (coord1*coord2 <= 0.0) && (coord1 != coord2);
-}
-
-inline bool TransformedTriangle::testSegmentIntersectsHPlane(const TriSegment seg) const
-{
- // get the H - coordinates
- const double coord1 = _coords[5*seg + 4];
- const double coord2 = _coords[5*( (seg + 1) % 3) + 4];
- //? should we use epsilon-equality here in second test?
- LOG(5, "coord1 : " << coord1 << " coord2 : " << coord2 );
-
- return (coord1*coord2 <= 0.0) && (coord1 != coord2);
-}
-
-inline bool TransformedTriangle::testSurfaceAboveCorner(const TetraCorner corner) const
-{
- // ? There seems to be an error in Grandy -> it should be C_XY instead of C_YZ in [28].
- // ? I haven't really figured out why, but it seems to work.
- const double normal = calcStableC(PQ, C_XY) + calcStableC(QR, C_XY) + calcStableC(RP, C_XY);
-
- LOG(6, "surface above corner " << corner << " : " << "n = " << normal << ", t = [" << calcTByDevelopingRow(corner, 1, false) << ", " << calcTByDevelopingRow(corner, 2, false) << ", " << calcTByDevelopingRow(corner, 3, false) );
- LOG(6, "] - stable : " << calcStableT(corner) );
-
- //? we don't care here if the triple product is "invalid", that is, the triangle does not surround one of the
- // edges going out from the corner (Grandy [53])
- if(!_validTP[corner])
- {
- return ( calcTByDevelopingRow(corner, 1, false) * normal ) >= 0.0;
- }
- else
- {
- return ( calcStableT(corner) * normal ) >= 0.0;
- }
-}
-
-inline bool TransformedTriangle::testTriangleSurroundsRay(const TetraCorner corner) const
-{
- // assert(corner == X || corner == Y || corner == Z);
-
- // double products to use for the possible corners
- static const DoubleProduct DP_FOR_RAY_INTERSECTION[4] =
- {
- DoubleProduct(0), // O - only here to fill out and make indices match
- C_10, // X
- C_01, // Y
- C_XY // Z
- };
-
- const DoubleProduct dp = DP_FOR_RAY_INTERSECTION[corner];
-
- const double cPQ = calcStableC(PQ, dp);
- const double cQR = calcStableC(QR, dp);
- const double cRP = calcStableC(RP, dp);
-
- //? NB here we have no correction for precision - is this good?
- // Our authority Grandy says nothing
- LOG(5, "dp in triSurrRay for corner " << corner << " = [" << cPQ << ", " << cQR << ", " << cRP << "]" );
-
- return ( cPQ*cQR > 0.0 ) && ( cPQ*cRP > 0.0 );
-
-}
-#endif
