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388 lines
15 KiB
C++
388 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2011- Statoil ASA
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// Copyright (C) 2013- Ceetron Solutions AS
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// Copyright (C) 2011-2012 Ceetron AS
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#include "RigCell.h"
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#include "RigCellGeometryTools.h"
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#include "RigMainGrid.h"
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#include "cvfPlane.h"
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#include "cvfRay.h"
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#include <cmath>
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static size_t undefinedCornersArray[8] = {cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T,
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cvf::UNDEFINED_SIZE_T };
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RigCell::RigCell() :
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m_gridLocalCellIndex(cvf::UNDEFINED_SIZE_T),
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m_hostGrid(nullptr),
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m_subGrid(nullptr),
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m_parentCellIndex(cvf::UNDEFINED_SIZE_T),
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m_mainGridCellIndex(cvf::UNDEFINED_SIZE_T),
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m_coarseningBoxIndex(cvf::UNDEFINED_SIZE_T),
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m_isInvalid(false)
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{
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memcpy(m_cornerIndices.data(), undefinedCornersArray, 8*sizeof(size_t));
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m_cellFaceFaults[0] = false;
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m_cellFaceFaults[1] = false;
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m_cellFaceFaults[2] = false;
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m_cellFaceFaults[3] = false;
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m_cellFaceFaults[4] = false;
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m_cellFaceFaults[5] = false;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RigCell::~RigCell()
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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cvf::Vec3d RigCell::center() const
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{
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cvf::Vec3d avg(cvf::Vec3d::ZERO);
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size_t i;
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for (i = 0; i < 8; i++)
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{
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avg += m_hostGrid->mainGrid()->nodes()[m_cornerIndices[i]];
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}
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avg /= 8.0;
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return avg;
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}
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bool isNear(const cvf::Vec3d& p1, const cvf::Vec3d& p2, double tolerance)
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{
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if ( cvf::Math::abs(p1[0] - p2[0]) < tolerance
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&& cvf::Math::abs(p1[1] - p2[1]) < tolerance
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&& cvf::Math::abs(p1[2] - p2[2]) < tolerance )
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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bool RigCell::isLongPyramidCell(double maxHeightFactor, double nodeNearTolerance ) const
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{
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cvf::ubyte faceVertexIndices[4];
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double squaredMaxHeightFactor = maxHeightFactor*maxHeightFactor;
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const std::vector<cvf::Vec3d>& nodes = m_hostGrid->mainGrid()->nodes();
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int face;
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for ( face = 0; face < 6 ; ++face)
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{
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cvf::StructGridInterface::cellFaceVertexIndices(static_cast<cvf::StructGridInterface::FaceType>(face), faceVertexIndices);
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int zeroLengthEdgeCount = 0;
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const cvf::Vec3d& c0 = nodes[m_cornerIndices[faceVertexIndices[0]]];
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const cvf::Vec3d& c1 = nodes[m_cornerIndices[faceVertexIndices[1]]];
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const cvf::Vec3d& c2 = nodes[m_cornerIndices[faceVertexIndices[2]]];
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const cvf::Vec3d& c3 = nodes[m_cornerIndices[faceVertexIndices[3]]];
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if (isNear(c0, c1, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (isNear(c1, c2, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (isNear(c2, c3, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (zeroLengthEdgeCount == 3)
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{
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return true;
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#if 0 // More advanced checks turned off since the start. Why did I do that ?
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// Collapse of a complete face is detected. This is possibly the top of a pyramid
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// "face" has the index to the collapsed face. We need the size of the opposite face
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// to compare it with the pyramid "roof" length.
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cvf::StructGridInterface::FaceType oppositeFace = cvf::StructGridInterface::POS_I;
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switch (face)
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{
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case cvf::StructGridInterface::POS_I:
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oppositeFace = cvf::StructGridInterface::NEG_I;
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break;
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case cvf::StructGridInterface::POS_J:
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oppositeFace = cvf::StructGridInterface::NEG_J;
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break;
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case cvf::StructGridInterface::POS_K:
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oppositeFace = cvf::StructGridInterface::NEG_K;
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break;
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case cvf::StructGridInterface::NEG_I:
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oppositeFace = cvf::StructGridInterface::POS_I;
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break;
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case cvf::StructGridInterface::NEG_J:
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oppositeFace = cvf::StructGridInterface::POS_J;
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break;
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case cvf::StructGridInterface::NEG_K:
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oppositeFace = cvf::StructGridInterface::POS_K;
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break;
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default:
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CVF_ASSERT(false);
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break;
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}
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cvf::StructGridInterface::cellFaceVertexIndices(oppositeFace, faceVertexIndices);
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const cvf::Vec3d& c0opp = nodes[m_cornerIndices[faceVertexIndices[0]]];
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const cvf::Vec3d& c1opp = nodes[m_cornerIndices[faceVertexIndices[1]]];
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const cvf::Vec3d& c2opp = nodes[m_cornerIndices[faceVertexIndices[2]]];
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const cvf::Vec3d& c3opp = nodes[m_cornerIndices[faceVertexIndices[3]]];
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// Check if any of the opposite face vertexes are also degenerated to the pyramid top
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int okVertexCount = 0;
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cvf::Vec3d okVxs[4];
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if (!isNear(c0opp, c0, nodeNearTolerance)) { okVxs[okVertexCount] = c0opp; ++okVertexCount; }
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if (!isNear(c1opp, c0, nodeNearTolerance)) { okVxs[okVertexCount] = c1opp; ++okVertexCount; }
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if (!isNear(c2opp, c0, nodeNearTolerance)) { okVxs[okVertexCount] = c2opp; ++okVertexCount; }
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if (!isNear(c3opp, c0, nodeNearTolerance)) { okVxs[okVertexCount] = c3opp; ++okVertexCount; }
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if (okVertexCount < 2)
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{
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return true;
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}
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else
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{
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// Use the good vertices to calculate a face size that can be compared to the pyramid height:
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double typicalSquaredEdgeLength = 0;
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for (int i = 1; i < okVertexCount; ++i)
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{
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typicalSquaredEdgeLength += (okVxs[i-1] - okVxs[i]).lengthSquared();
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}
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typicalSquaredEdgeLength /= okVertexCount;
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double pyramidHeightSquared = (okVxs[0] - c0).lengthSquared();
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if (pyramidHeightSquared > squaredMaxHeightFactor*typicalSquaredEdgeLength)
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{
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return true;
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}
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}
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#endif
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}
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// Check the ratio of the length of opposite edges.
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// both ratios have to be above threshold to detect a pyramid-ish cell
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// Only test this if we have all nonzero edge lenghts.
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else if (zeroLengthEdgeCount == 0) // If the four first faces are ok, the two last must be as well
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{
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double e0SquareLenght = (c1 - c0).lengthSquared();
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double e2SquareLenght = (c3 - c2).lengthSquared();
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if ( e0SquareLenght / e2SquareLenght > squaredMaxHeightFactor
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|| e2SquareLenght / e0SquareLenght > squaredMaxHeightFactor )
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{
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double e1SquareLenght = (c2 - c1).lengthSquared();
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double e3SquareLenght = (c0 - c3).lengthSquared();
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if ( e1SquareLenght / e3SquareLenght > squaredMaxHeightFactor
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|| e3SquareLenght / e1SquareLenght > squaredMaxHeightFactor )
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{
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return true;
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}
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}
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}
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}
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return false;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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bool RigCell::isCollapsedCell(double nodeNearTolerance) const
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{
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const std::vector<cvf::Vec3d>& nodes = m_hostGrid->mainGrid()->nodes();
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cvf::ubyte faceVertexIndices[4];
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cvf::ubyte oppFaceVertexIndices[4];
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int face;
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for ( face = 0; face < 6 ; face += 2)
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{
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cvf::StructGridInterface::cellFaceVertexIndices(static_cast<cvf::StructGridInterface::FaceType>(face), faceVertexIndices);
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cvf::StructGridInterface::cellFaceVertexIndices(cvf::StructGridInterface::oppositeFace(static_cast<cvf::StructGridInterface::FaceType>(face)), oppFaceVertexIndices);
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cvf::Vec3d c0 = nodes[m_cornerIndices[faceVertexIndices[0]]];
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cvf::Vec3d c1 = nodes[m_cornerIndices[faceVertexIndices[1]]];
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cvf::Vec3d c2 = nodes[m_cornerIndices[faceVertexIndices[2]]];
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cvf::Vec3d c3 = nodes[m_cornerIndices[faceVertexIndices[3]]];
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cvf::Vec3d oc0 = nodes[m_cornerIndices[oppFaceVertexIndices[0]]];
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cvf::Vec3d oc1 = nodes[m_cornerIndices[oppFaceVertexIndices[1]]];
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cvf::Vec3d oc2 = nodes[m_cornerIndices[oppFaceVertexIndices[2]]];
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cvf::Vec3d oc3 = nodes[m_cornerIndices[oppFaceVertexIndices[3]]];
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int zeroLengthEdgeCount = 0;
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if (isNear(c0, oc0, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (isNear(c1, oc3, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (isNear(c2, oc2, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (isNear(c3, oc1, nodeNearTolerance)) { ++zeroLengthEdgeCount; }
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if (zeroLengthEdgeCount >= 4)
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{
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return true;
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}
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}
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return false;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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cvf::Vec3d RigCell::faceCenter(cvf::StructGridInterface::FaceType face) const
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{
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cvf::Vec3d avg(cvf::Vec3d::ZERO);
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cvf::ubyte faceVertexIndices[4];
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cvf::StructGridInterface::cellFaceVertexIndices(face, faceVertexIndices);
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const std::vector<cvf::Vec3d>& nodeCoords = m_hostGrid->mainGrid()->nodes();
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size_t i;
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for (i = 0; i < 4; i++)
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{
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avg += nodeCoords[m_cornerIndices[faceVertexIndices[i]]];
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}
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avg /= 4.0;
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return avg;
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}
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//--------------------------------------------------------------------------------------------------
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/// Returns an area vector for the cell face. The direction is the face normal, and the length is
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/// equal to the face area (projected to the plane represented by the diagonal in case of warp)
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/// The components of this area vector are equal to the area of the face projection onto
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/// the corresponding plane.
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/// See http://geomalgorithms.com/a01-_area.html
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//--------------------------------------------------------------------------------------------------
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cvf::Vec3d RigCell::faceNormalWithAreaLenght(cvf::StructGridInterface::FaceType face) const
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{
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cvf::ubyte faceVertexIndices[4];
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cvf::StructGridInterface::cellFaceVertexIndices(face, faceVertexIndices);
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const std::vector<cvf::Vec3d>& nodeCoords = m_hostGrid->mainGrid()->nodes();
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return 0.5*( nodeCoords[m_cornerIndices[faceVertexIndices[2]]] - nodeCoords[m_cornerIndices[faceVertexIndices[0]]]) ^
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( nodeCoords[m_cornerIndices[faceVertexIndices[3]]] - nodeCoords[m_cornerIndices[faceVertexIndices[1]]]);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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double RigCell::volume() const
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{
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const std::vector<cvf::Vec3d>& nodeCoords = m_hostGrid->mainGrid()->nodes();
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std::array<cvf::Vec3d, 8> hexCorners;
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for (size_t i = 0; i < 8; ++i)
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{
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hexCorners[i] = nodeCoords.at(m_cornerIndices[i]);
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}
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return RigCellGeometryTools::calculateCellVolume(hexCorners);
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}
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//--------------------------------------------------------------------------------------------------
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/// Find the intersection between the cell and the ray. The point closest to the ray origin is returned
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/// in \a intersectionPoint, while the return value is the total number of intersections with the 24 triangles
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/// the cell is interpreted as.
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/// If no intersection is found, the intersection point is untouched.
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//--------------------------------------------------------------------------------------------------
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int RigCell::firstIntersectionPoint(const cvf::Ray& ray, cvf::Vec3d* intersectionPoint) const
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{
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CVF_ASSERT(intersectionPoint != nullptr);
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cvf::ubyte faceVertexIndices[4];
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int face;
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const std::vector<cvf::Vec3d>& nodes = m_hostGrid->mainGrid()->nodes();
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cvf::Vec3d firstIntersection(cvf::Vec3d::ZERO);
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double minLsq = HUGE_VAL;
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int intersectionCount = 0;
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for (face = 0; face < 6 ; ++face)
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{
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cvf::StructGridInterface::cellFaceVertexIndices(static_cast<cvf::StructGridInterface::FaceType>(face), faceVertexIndices);
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cvf::Vec3d intersection;
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cvf::Vec3d faceCenter = this->faceCenter(static_cast<cvf::StructGridInterface::FaceType>(face));
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for (size_t i = 0; i < 4; ++i)
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{
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size_t next = i < 3 ? i+1 : 0;
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if ( ray.triangleIntersect( nodes[m_cornerIndices[faceVertexIndices[i]]],
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nodes[m_cornerIndices[faceVertexIndices[next]]],
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faceCenter,
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&intersection))
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{
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intersectionCount++;
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double lsq = (intersection - ray.origin() ).lengthSquared();
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if (lsq < minLsq)
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{
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firstIntersection = intersection;
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minLsq = lsq;
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}
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}
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}
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}
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if (intersectionCount > 0)
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{
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*intersectionPoint = firstIntersection;
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}
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return intersectionCount;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RigCell::faceIndices(cvf::StructGridInterface::FaceType face, std::array<size_t, 4>* indices) const
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{
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cvf::ubyte faceVertexIndices[4];
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cvf::StructGridInterface::cellFaceVertexIndices(face, faceVertexIndices);
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(*indices)[0] = m_cornerIndices[faceVertexIndices[0]];
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(*indices)[1] = m_cornerIndices[faceVertexIndices[1]];
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(*indices)[2] = m_cornerIndices[faceVertexIndices[2]];
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(*indices)[3] = m_cornerIndices[faceVertexIndices[3]];
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}
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