ResInsight/ApplicationCode/ModelVisualization/Surfaces/RivSurfaceIntersectionGeometryGenerator.cpp
Jacob Støren 896a0f067e #5369 First sensible border geometry.
Still not handling holes returned from clipper.
Int-point size (for clipper) implications not yet understood/investigated
2020-01-24 11:17:04 +01:00

648 lines
27 KiB
C++

/////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) Statoil ASA
// Copyright (C) Ceetron Solutions AS
//
// ResInsight is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ResInsight 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 General Public License at <http://www.gnu.org/licenses/gpl.html>
// for more details.
//
/////////////////////////////////////////////////////////////////////////////////
#include "RivSurfaceIntersectionGeometryGenerator.h"
#include "RigMainGrid.h"
#include "RigResultAccessor.h"
#include "RigSurface.h"
#include "Rim3dView.h"
#include "RimCase.h"
#include "RimGridView.h"
#include "RimSurface.h"
#include "RimSurfaceInView.h"
#include "RivExtrudedCurveIntersectionPartMgr.h"
#include "RivHexGridIntersectionTools.h"
#include "RivPolylineGenerator.h"
#include "cafDisplayCoordTransform.h"
#include "cafHexGridIntersectionTools/cafHexGridIntersectionTools.h"
#include "cvfDrawableGeo.h"
#include "cvfGeometryTools.h"
#include "cvfPlane.h"
#include "cvfPrimitiveSetDirect.h"
#include "cvfPrimitiveSetIndexedUInt.h"
#include "cvfRay.h"
#include "cvfScalarMapper.h"
#include "../cafHexInterpolator/cafHexInterpolator.h"
#include "RivSectionFlattner.h"
#include "RiaLogging.h"
#include "clipper.hpp"
cvf::ref<caf::DisplayCoordTransform> displayCoordTransform( const RimIntersection* intersection )
{
Rim3dView* rimView = nullptr;
intersection->firstAncestorOrThisOfType( rimView );
CVF_ASSERT( rimView );
cvf::ref<caf::DisplayCoordTransform> transForm = rimView->displayCoordTransform();
return transForm;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivSurfaceIntersectionGeometryGenerator::RivSurfaceIntersectionGeometryGenerator( RimSurfaceInView* surfInView,
const RivIntersectionHexGridInterface* grid )
: m_surfaceInView( surfInView )
, m_hexGrid( grid )
{
m_triangleVxes = new cvf::Vec3fArray;
m_cellBorderLineVxes = new cvf::Vec3fArray;
m_faultCellBorderLineVxes = new cvf::Vec3fArray;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivSurfaceIntersectionGeometryGenerator::~RivSurfaceIntersectionGeometryGenerator() {}
class MeshLinesAccumulator
{
public:
MeshLinesAccumulator( const RivIntersectionHexGridInterface* hexGrid )
: m_hexGrid( hexGrid )
{
}
std::vector<cvf::Vec3f> cellBorderLineVxes;
std::vector<cvf::Vec3f> faultCellBorderLineVxes;
std::map<const RigFault*, cvf::Vec3d> faultToHighestFaultMeshVxMap;
void accumulateMeshLines( const std::vector<int>& cellFaceForEachClippedTriangleEdge,
uint triVxIdx,
size_t globalCellIdx,
const cvf::Vec3d& p0,
const cvf::Vec3d& p1 )
{
#define isFace( faceEnum ) ( 0 <= faceEnum && faceEnum <= 5 )
using FaceType = cvf::StructGridInterface::FaceType;
if ( isFace( cellFaceForEachClippedTriangleEdge[triVxIdx] ) )
{
const RigFault* fault =
m_hexGrid->findFaultFromCellIndexAndCellFace( globalCellIdx,
(FaceType)cellFaceForEachClippedTriangleEdge[triVxIdx] );
if ( fault )
{
cvf::Vec3d highestVx = p0.z() > p1.z() ? p0 : p1;
auto itIsInsertedPair = faultToHighestFaultMeshVxMap.insert( {fault, highestVx} );
if ( !itIsInsertedPair.second )
{
if ( itIsInsertedPair.first->second.z() < highestVx.z() )
{
itIsInsertedPair.first->second = highestVx;
}
}
faultCellBorderLineVxes.emplace_back( p0 );
faultCellBorderLineVxes.emplace_back( p1 );
}
else
{
cellBorderLineVxes.emplace_back( p0 );
cellBorderLineVxes.emplace_back( p1 );
}
}
}
private:
cvf::cref<RivIntersectionHexGridInterface> m_hexGrid;
};
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
template <typename Vec3Type>
double closestAxisSignedAreaPlanarPolygon( const cvf::Vec3d& planeNormal, const std::vector<Vec3Type>& polygon )
{
int Z = cvf::GeometryTools::findClosestAxis( planeNormal );
int X = ( Z + 1 ) % 3;
int Y = ( Z + 2 ) % 3;
// Use Shoelace formula to calculate signed area.
// https://en.wikipedia.org/wiki/Shoelace_formula
double signedArea = 0.0;
for ( size_t i = 0; i < polygon.size(); ++i )
{
signedArea += ( polygon[( i + 1 ) % polygon.size()][X] + polygon[i][X] ) *
( polygon[( i + 1 ) % polygon.size()][Y] - polygon[i][Y] );
}
return ( planeNormal[Z] > 0 ) ? signedArea : -signedArea;
}
class ClipperInterface
{
public:
static ClipperLib::IntPoint toClipperPoint( const cvf::Vec3d& cvfPoint )
{
int xInt = cvfPoint.x() * clipperConversionFactor;
int yInt = cvfPoint.y() * clipperConversionFactor;
return ClipperLib::IntPoint( xInt, yInt, 0 );
}
static cvf::Vec3d fromClipperPoint( const ClipperLib::IntPoint& clipPoint )
{
return cvf::Vec3d( clipPoint.X, clipPoint.Y, 0.0 ) / clipperConversionFactor;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
static std::vector<std::vector<cvf::Vec3d>>
subtractAndSimplifyPolygons( const std::vector<cvf::Vec3d>& sourcePolygon,
const std::vector<std::vector<cvf::Vec3d>>& polygonsToSubtract )
{
ClipperLib::Paths unionOfPolygonsToSubtract;
{
ClipperLib::Clipper unionator;
for ( const auto& path : polygonsToSubtract )
{
ClipperLib::Path polyToSubtractPath;
for ( const auto& v : path )
{
polyToSubtractPath.push_back( toClipperPoint( v ) );
}
unionator.AddPath( polyToSubtractPath, ClipperLib::ptSubject, true );
}
unionator.Execute( ClipperLib::ctUnion,
unionOfPolygonsToSubtract,
ClipperLib::pftEvenOdd,
ClipperLib::pftEvenOdd );
}
ClipperLib::Path sourcePolygonPath;
for ( const auto& v : sourcePolygon )
{
sourcePolygonPath.push_back( toClipperPoint( v ) );
}
ClipperLib::Clipper subtractor;
subtractor.AddPath( sourcePolygonPath, ClipperLib::ptSubject, true );
subtractor.AddPaths( unionOfPolygonsToSubtract, ClipperLib::ptClip, true );
ClipperLib::Paths subtractionResultPaths;
subtractor.Execute( ClipperLib::ctDifference,
subtractionResultPaths,
ClipperLib::pftEvenOdd,
ClipperLib::pftEvenOdd );
ClipperLib::CleanPolygons( subtractionResultPaths, 3 );
std::vector<std::vector<cvf::Vec3d>> clippedPolygons;
// Convert back to std::vector<std::vector<cvf::Vec3d> >
for ( ClipperLib::Path pathInSol : subtractionResultPaths )
{
std::vector<cvf::Vec3d> clippedPolygon;
for ( ClipperLib::IntPoint IntPosition : pathInSol )
{
clippedPolygon.push_back( fromClipperPoint( IntPosition ) );
}
clippedPolygons.push_back( clippedPolygon );
}
return clippedPolygons;
}
private:
static double clipperConversionFactor;
};
double ClipperInterface::clipperConversionFactor = 100; // For transform to clipper int
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RivSurfaceIntersectionGeometryGenerator::calculateArrays()
{
if ( m_triangleVxes->size() ) return;
if ( m_hexGrid.isNull() ) return;
std::vector<cvf::Vec3f> outputTriangleVertices;
MeshLinesAccumulator meshAcc( m_hexGrid.p() );
cvf::BoundingBox gridBBox = m_hexGrid->boundingBox();
m_usedSurfaceData = m_surfaceInView->surface()->surfaceData();
const std::vector<cvf::Vec3d>& nativeVertices = m_usedSurfaceData->vertices();
const std::vector<unsigned>& nativeTriangleIndices = m_usedSurfaceData->triangleIndices();
cvf::Vec3d displayModelOffset = m_hexGrid->displayOffset();
for ( size_t ntVxIdx = 0; ntVxIdx < nativeTriangleIndices.size(); ntVxIdx += 3 )
{
cvf::Vec3d p0 = nativeVertices[nativeTriangleIndices[ntVxIdx + 0]];
cvf::Vec3d p1 = nativeVertices[nativeTriangleIndices[ntVxIdx + 1]];
cvf::Vec3d p2 = nativeVertices[nativeTriangleIndices[ntVxIdx + 2]];
cvf::BoundingBox triangleBBox;
triangleBBox.add( p0 );
triangleBBox.add( p1 );
triangleBBox.add( p2 );
cvf::Vec3d maxHeightVec;
std::vector<size_t> triIntersectedCellCandidates;
m_hexGrid->findIntersectingCells( triangleBBox, &triIntersectedCellCandidates );
cvf::Plane plane;
plane.setFromPoints( p0, p1, p2 );
std::vector<caf::HexGridIntersectionTools::ClipVx> hexPlaneCutTriangleVxes;
hexPlaneCutTriangleVxes.reserve( 5 * 3 );
std::vector<int> cellFaceForEachTriangleEdge;
cellFaceForEachTriangleEdge.reserve( 5 * 3 );
std::array<cvf::Vec3d, 8> cellCorners;
std::array<size_t, 8> cornerIndices;
size_t startOfGeneratedTrianglesForNativeTriangle = outputTriangleVertices.size();
for ( size_t ticIdx = 0; ticIdx < triIntersectedCellCandidates.size(); ++ticIdx )
{
size_t globalCellIdx = triIntersectedCellCandidates[ticIdx];
if ( !m_hexGrid->useCell( globalCellIdx ) ) continue;
m_hexGrid->cellCornerVertices( globalCellIdx, &cellCorners[0] );
m_hexGrid->cellCornerIndices( globalCellIdx, &cornerIndices[0] );
hexPlaneCutTriangleVxes.clear();
int triangleCount = caf::HexGridIntersectionTools::planeHexIntersectionMC( plane,
&cellCorners[0],
&cornerIndices[0],
&hexPlaneCutTriangleVxes,
&cellFaceForEachTriangleEdge );
if ( triangleCount == 0 ) continue;
std::vector<cvf::Vec3d> cellCutTriangles;
for ( const auto& clipVx : hexPlaneCutTriangleVxes )
{
cellCutTriangles.push_back( clipVx.vx );
}
std::vector<cvf::Vec3d> clippedTriangleVxes;
std::vector<int> cellFaceForEachClippedTriangleEdge;
caf::HexGridIntersectionTools::clipPlanarTrianglesWithInPlaneTriangle( cellCutTriangles,
cellFaceForEachTriangleEdge,
p0,
p1,
p2,
&clippedTriangleVxes,
&cellFaceForEachClippedTriangleEdge );
size_t clippedTriangleCount = clippedTriangleVxes.size() / 3;
for ( uint clippTrIdx = 0; clippTrIdx < clippedTriangleCount; ++clippTrIdx )
{
uint triVxIdx = clippTrIdx * 3;
// Accumulate triangle vertices
cvf::Vec3d point0( clippedTriangleVxes[triVxIdx + 0] - displayModelOffset );
cvf::Vec3d point1( clippedTriangleVxes[triVxIdx + 1] - displayModelOffset );
cvf::Vec3d point2( clippedTriangleVxes[triVxIdx + 2] - displayModelOffset );
outputTriangleVertices.emplace_back( point0 );
outputTriangleVertices.emplace_back( point1 );
outputTriangleVertices.emplace_back( point2 );
// Accumulate mesh lines
meshAcc.accumulateMeshLines( cellFaceForEachClippedTriangleEdge, triVxIdx + 0, globalCellIdx, point0, point1 );
meshAcc.accumulateMeshLines( cellFaceForEachClippedTriangleEdge, triVxIdx + 1, globalCellIdx, point1, point2 );
meshAcc.accumulateMeshLines( cellFaceForEachClippedTriangleEdge, triVxIdx + 2, globalCellIdx, point2, point0 );
// Mapping to cell index
m_triangleToCellIdxMap.push_back( globalCellIdx );
// Interpolation from nodes
for ( int i = 0; i < 3; ++i )
{
cvf::Vec3d cvx = clippedTriangleVxes[triVxIdx + i];
std::array<double, 8> cornerWeights = caf::HexInterpolator::vertexWeights( cellCorners, cvx );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights( cornerIndices, cornerWeights ) );
}
}
}
// Add triangles for the part of the native triangle outside any gridcells
if ( startOfGeneratedTrianglesForNativeTriangle == outputTriangleVertices.size() )
{
// No triangles created, use the complete native triangle
outputTriangleVertices.push_back( cvf::Vec3f( p0 - displayModelOffset ) );
outputTriangleVertices.push_back( cvf::Vec3f( p1 - displayModelOffset ) );
outputTriangleVertices.push_back( cvf::Vec3f( p2 - displayModelOffset ) );
m_triangleToCellIdxMap.push_back( cvf::UNDEFINED_SIZE_T );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights() );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights() );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights() );
}
else
{
// Use area to check if the native triangle was completely covered by the intersection triangles
double nativeTriangleArea = 0.0;
double intersectionArea = 0.0;
double minSignificantTriangleArea = 0.0;
{
std::vector<cvf::Vec3f> nativeTriangle = {cvf::Vec3f( p0 - displayModelOffset ),
cvf::Vec3f( p1 - displayModelOffset ),
cvf::Vec3f( p2 - displayModelOffset )};
nativeTriangleArea = closestAxisSignedAreaPlanarPolygon( plane.normal(), nativeTriangle );
minSignificantTriangleArea = 1e-4 * nativeTriangleArea;
std::vector<cvf::Vec3f> intersectionTriangle( 3 );
for ( size_t tvxIdx = startOfGeneratedTrianglesForNativeTriangle; tvxIdx < outputTriangleVertices.size();
tvxIdx += 3 )
{
std::copy( outputTriangleVertices.begin() + tvxIdx,
outputTriangleVertices.begin() + tvxIdx + 3,
intersectionTriangle.begin() );
intersectionArea += closestAxisSignedAreaPlanarPolygon( plane.normal(), intersectionTriangle );
}
// If we have covered enough, do not try to create triangles for the rest
if ( ( nativeTriangleArea - intersectionArea ) < minSignificantTriangleArea ) continue;
}
// Subtract the created triangles from the native triangle
// We need to transform the triangles into x/y plane to do the polygon operation
// Find the local CS for the native triangle in display coords
cvf::Mat4d nativeTriangleCS;
{
cvf::Vec3d ez = plane.normal().getNormalized();
cvf::Vec3d ex = ( p1 - p0 ).getNormalized();
cvf::Vec3d ey = ez ^ ex;
nativeTriangleCS = cvf::Mat4d::fromCoordSystemAxes( &ex, &ey, &ez );
nativeTriangleCS.setTranslation( p0 - displayModelOffset );
}
cvf::Mat4d invNativeTriangleCS = nativeTriangleCS.getInverted();
std::vector<std::vector<cvf::Vec3d>> polygonsToSubtract;
for ( size_t tvxIdx = startOfGeneratedTrianglesForNativeTriangle; tvxIdx < outputTriangleVertices.size();
tvxIdx += 3 )
{
std::vector<cvf::Vec3d> triangle =
{cvf::Vec3d( outputTriangleVertices[tvxIdx + 0] ).getTransformedPoint( invNativeTriangleCS ),
cvf::Vec3d( outputTriangleVertices[tvxIdx + 1] ).getTransformedPoint( invNativeTriangleCS ),
cvf::Vec3d( outputTriangleVertices[tvxIdx + 2] ).getTransformedPoint( invNativeTriangleCS )};
polygonsToSubtract.push_back( triangle );
}
std::vector<cvf::Vec3d> nativeTrianglePoly =
{( cvf::Vec3d( cvf::Vec3f( p0 - displayModelOffset ) ) ).getTransformedPoint( invNativeTriangleCS ),
( cvf::Vec3d( cvf::Vec3f( p1 - displayModelOffset ) ) ).getTransformedPoint( invNativeTriangleCS ),
( cvf::Vec3d( cvf::Vec3f( p2 - displayModelOffset ) ) ).getTransformedPoint( invNativeTriangleCS )};
std::vector<std::vector<cvf::Vec3d>> remainingPolygons;
remainingPolygons = ClipperInterface::subtractAndSimplifyPolygons( nativeTrianglePoly, polygonsToSubtract );
// Check for holes in solution
bool hasHoles = false;
for ( const auto& remainingPolygon : remainingPolygons )
{
double area = closestAxisSignedAreaPlanarPolygon( cvf::Vec3d::Z_AXIS, remainingPolygon );
if ( area < -minSignificantTriangleArea )
{
hasHoles = true;
}
}
if ( hasHoles ) continue; // Cant tesselate polygons with holes
// Add the remains
for ( const auto& remainingPolygon : remainingPolygons )
{
if ( remainingPolygon.empty() ) continue;
cvf::EarClipTesselator tess;
tess.setNormal( plane.normal() );
tess.setMinTriangleArea( minSignificantTriangleArea );
cvf::Vec3dArray cvfNodes( remainingPolygon );
tess.setGlobalNodeArray( cvfNodes );
std::vector<size_t> polyIndexes;
for ( size_t idx = 0; idx < remainingPolygon.size(); ++idx )
{
polyIndexes.push_back( idx );
}
tess.setPolygonIndices( polyIndexes );
std::vector<size_t> triangleIndices;
bool isTesselationOk = tess.calculateTriangles( &triangleIndices );
if ( !isTesselationOk )
{
// continue;
// CVF_ASSERT( false );
}
double tesselatedArea = 0;
for ( size_t idx = 0; idx < triangleIndices.size(); idx += 3 )
{
cvf::Vec3f tp1(
( remainingPolygon[triangleIndices[idx + 0]] ).getTransformedPoint( nativeTriangleCS ) );
cvf::Vec3f tp2(
( remainingPolygon[triangleIndices[idx + 1]] ).getTransformedPoint( nativeTriangleCS ) );
cvf::Vec3f tp3(
( remainingPolygon[triangleIndices[idx + 2]] ).getTransformedPoint( nativeTriangleCS ) );
outputTriangleVertices.push_back( tp1 );
outputTriangleVertices.push_back( tp2 );
outputTriangleVertices.push_back( tp3 );
std::vector<cvf::Vec3f> nativeTriangle = {tp1, tp2, tp3};
tesselatedArea += closestAxisSignedAreaPlanarPolygon( plane.normal(), nativeTriangle );
m_triangleToCellIdxMap.push_back( cvf::UNDEFINED_SIZE_T );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights() );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights() );
m_triVxToCellCornerWeights.push_back( RivIntersectionVertexWeights() );
}
if ( ( tesselatedArea - 20 * minSignificantTriangleArea ) > ( nativeTriangleArea - intersectionArea ) )
{
double overlapArea = tesselatedArea - ( nativeTriangleArea - intersectionArea );
RiaLogging::debug( "Surface intersection triangularization overlap detected : " +
QString::number( overlapArea ) );
// CVF_ASSERT( false );
}
}
}
}
m_triangleVxes->assign( outputTriangleVertices );
m_cellBorderLineVxes->assign( meshAcc.cellBorderLineVxes );
m_faultCellBorderLineVxes->assign( meshAcc.faultCellBorderLineVxes );
for ( const auto& it : meshAcc.faultToHighestFaultMeshVxMap )
{
m_faultMeshLabelAndAnchorPositions.push_back( {it.first->name(), it.second} );
}
}
//--------------------------------------------------------------------------------------------------
/// Generate surface drawable geo from the specified region
///
//--------------------------------------------------------------------------------------------------
cvf::ref<cvf::DrawableGeo> RivSurfaceIntersectionGeometryGenerator::generateSurface()
{
calculateArrays();
CVF_ASSERT( m_triangleVxes.notNull() );
if ( m_triangleVxes->size() == 0 ) return nullptr;
cvf::ref<cvf::DrawableGeo> geo = new cvf::DrawableGeo;
geo->setFromTriangleVertexArray( m_triangleVxes.p() );
return geo;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
cvf::ref<cvf::DrawableGeo> RivSurfaceIntersectionGeometryGenerator::createMeshDrawable()
{
if ( !( m_cellBorderLineVxes.notNull() && m_cellBorderLineVxes->size() != 0 ) ) return nullptr;
cvf::ref<cvf::DrawableGeo> geo = new cvf::DrawableGeo;
geo->setVertexArray( m_cellBorderLineVxes.p() );
cvf::ref<cvf::PrimitiveSetDirect> prim = new cvf::PrimitiveSetDirect( cvf::PT_LINES );
prim->setIndexCount( m_cellBorderLineVxes->size() );
geo->addPrimitiveSet( prim.p() );
return geo;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
cvf::ref<cvf::DrawableGeo> RivSurfaceIntersectionGeometryGenerator::createFaultMeshDrawable()
{
if ( !( m_faultCellBorderLineVxes.notNull() && m_faultCellBorderLineVxes->size() != 0 ) ) return nullptr;
cvf::ref<cvf::DrawableGeo> geo = new cvf::DrawableGeo;
geo->setVertexArray( m_faultCellBorderLineVxes.p() );
cvf::ref<cvf::PrimitiveSetDirect> prim = new cvf::PrimitiveSetDirect( cvf::PT_LINES );
prim->setIndexCount( m_faultCellBorderLineVxes->size() );
geo->addPrimitiveSet( prim.p() );
return geo;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const std::vector<std::pair<QString, cvf::Vec3d>>&
RivSurfaceIntersectionGeometryGenerator::faultMeshLabelAndAnchorPositions()
{
return m_faultMeshLabelAndAnchorPositions;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const std::vector<size_t>& RivSurfaceIntersectionGeometryGenerator::triangleToCellIndex() const
{
CVF_ASSERT( m_triangleVxes->size() );
return m_triangleToCellIdxMap;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const std::vector<RivIntersectionVertexWeights>&
RivSurfaceIntersectionGeometryGenerator::triangleVxToCellCornerInterpolationWeights() const
{
CVF_ASSERT( m_triangleVxes->size() );
return m_triVxToCellCornerWeights;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const cvf::Vec3fArray* RivSurfaceIntersectionGeometryGenerator::triangleVxes() const
{
CVF_ASSERT( m_triangleVxes->size() );
return m_triangleVxes.p();
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RimSurfaceInView* RivSurfaceIntersectionGeometryGenerator::intersection() const
{
return m_surfaceInView;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RivSurfaceIntersectionGeometryGenerator::isAnyGeometryPresent() const
{
if ( m_triangleVxes->size() == 0 )
{
return false;
}
else
{
return true;
}
}