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(#166) WIP: Preliminary cross section geometry builder ready for testing

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This commit is contained in:
Jacob Støren 2015-11-16 12:12:42 +01:00
parent cfefddac09
commit 7845d9bd3c
2 changed files with 117 additions and 34 deletions
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127
ApplicationCode/ModelVisualization/RivCrossSectionGeometryGenerator.cpp
View File

@ -20,8 +20,24 @@
#include "RivCrossSectionGeometryGenerator.h"
#include "cvfBoundingBox.h"
#include "RigMainGrid.h"
#include "cvfDrawableGeo.h"
#include "RigResultAccessor.h"
#include "cvfScalarMapper.h"
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivCrossSectionGeometryGenerator::RivCrossSectionGeometryGenerator(const std::vector<cvf::Vec3d> &polyline,
const cvf::Vec3d& extrusionDirection,
const RigMainGrid* grid)
: m_polyLine(polyline),
m_extrusionDirection(extrusionDirection),
m_mainGrid(grid)
{
m_triangleVxes = new cvf::Vec3fArray;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
@ -683,41 +699,41 @@ int planeHexIntersectionMC(const cvf::Plane& plane,
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RivCrossSectionGeometryGenerator::RivCrossSectionGeometryGenerator(const std::vector<cvf::Vec3d> &polyline,
const cvf::Vec3d& extrusionDirection,
const RigMainGrid* grid)
void RivCrossSectionGeometryGenerator::calculateArrays()
{
cvf::BoundingBox gridBBox = grid->boundingBox();
cvf::Vec3d extDir = extrusionDirection.getNormalized();
if (m_triangleVxes->size()) return;
size_t lineCount = polyline.size();
std::vector<cvf::Vec3f> triangleVertices;
cvf::BoundingBox gridBBox = m_mainGrid->boundingBox();
m_extrusionDirection.normalize();
size_t lineCount = m_polyLine.size();
for (size_t lIdx = 0; lIdx < lineCount - 1; ++lIdx)
{
cvf::Vec3d p1 = polyline[lIdx];
cvf::Vec3d p2 = polyline[lIdx+1];
cvf::Vec3d p1 = m_polyLine[lIdx];
cvf::Vec3d p2 = m_polyLine[lIdx+1];
cvf::BoundingBox sectionBBox;
sectionBBox.add(p1);
sectionBBox.add(p1);
double maxSectionHeight = gridBBox.radius();
sectionBBox.add(p1 + extDir*maxSectionHeight);
sectionBBox.add(p1 - extDir*maxSectionHeight);
sectionBBox.add(p2 + extDir*maxSectionHeight);
sectionBBox.add(p2 - extDir*maxSectionHeight);
sectionBBox.add(p1 + m_extrusionDirection*maxSectionHeight);
sectionBBox.add(p1 - m_extrusionDirection*maxSectionHeight);
sectionBBox.add(p2 + m_extrusionDirection*maxSectionHeight);
sectionBBox.add(p2 - m_extrusionDirection*maxSectionHeight);
std::vector<size_t> columnCellCandidates;
grid->findIntersectingCells(sectionBBox, &columnCellCandidates);
m_mainGrid->findIntersectingCells(sectionBBox, &columnCellCandidates);
cvf::Plane plane;
plane.setFromPoints(p1, p2, p2 + extDir*maxSectionHeight);
plane.setFromPoints(p1, p2, p2 + m_extrusionDirection*maxSectionHeight);
cvf::Plane p1Plane;
p1Plane.setFromPoints(p1, p1 + extDir*maxSectionHeight, p1 + plane.normal());
p1Plane.setFromPoints(p1, p1 + m_extrusionDirection*maxSectionHeight, p1 + plane.normal());
cvf::Plane p2Plane;
p2Plane.setFromPoints(p2, p2 + extDir*maxSectionHeight, p2 + plane.normal() );
p2Plane.setFromPoints(p2, p2 + m_extrusionDirection*maxSectionHeight, p2 + plane.normal() );
std::vector<ClipVx> triangleVxes;
@ -729,9 +745,9 @@ RivCrossSectionGeometryGenerator::RivCrossSectionGeometryGenerator(const std::ve
size_t globalCellIdx = columnCellCandidates[cccIdx];
cvf::Vec3d cellCorners[8];
grid->cellCornerVertices(globalCellIdx, cellCorners);
m_mainGrid->cellCornerVertices(globalCellIdx, cellCorners);
const caf::SizeTArray8& cornerIndices = grid->cells()[globalCellIdx].cornerIndices();
const caf::SizeTArray8& cornerIndices = m_mainGrid->cells()[globalCellIdx].cornerIndices();
int hexCornersIds[8];
hexCornersIds[0] = static_cast<int>(cornerIndices[0]);
hexCornersIds[1] = static_cast<int>(cornerIndices[1]);
@ -742,7 +758,7 @@ RivCrossSectionGeometryGenerator::RivCrossSectionGeometryGenerator(const std::ve
hexCornersIds[6] = static_cast<int>(cornerIndices[6]);
hexCornersIds[7] = static_cast<int>(cornerIndices[7]);
uint triangleCount = planeHexIntersectionMC(plane,
int triangleCount = planeHexIntersectionMC(plane,
cellCorners,
hexCornersIds,
&triangleVxes);
@ -754,9 +770,9 @@ RivCrossSectionGeometryGenerator::RivCrossSectionGeometryGenerator(const std::ve
{
// Accumulate to geometry
int triVxIdx = tIdx*3;
m_triangleVxes.push_back(triangleVxes[triVxIdx+0].vx);
m_triangleVxes.push_back(triangleVxes[triVxIdx+1].vx);
m_triangleVxes.push_back(triangleVxes[triVxIdx+2].vx);
triangleVertices.push_back(cvf::Vec3f(triangleVxes[triVxIdx+0].vx));
triangleVertices.push_back(cvf::Vec3f(triangleVxes[triVxIdx+1].vx));
triangleVertices.push_back(cvf::Vec3f(triangleVxes[triVxIdx+2].vx));
m_triangleToCellIdxMap.push_back(globalCellIdx);
}
@ -827,4 +843,65 @@ RivCrossSectionGeometryGenerator::RivCrossSectionGeometryGenerator(const std::ve
}
}
m_triangleVxes->assign(triangleVertices);
}
//--------------------------------------------------------------------------------------------------
/// Generate surface drawable geo from the specified region
///
//--------------------------------------------------------------------------------------------------
cvf::ref<cvf::DrawableGeo> RivCrossSectionGeometryGenerator::generateSurface()
{
calculateArrays();
CVF_ASSERT(m_triangleVxes.notNull());
if (m_triangleVxes->size() == 0) return NULL;
cvf::ref<cvf::DrawableGeo> geo = new cvf::DrawableGeo;
geo->setFromTriangleVertexArray(m_triangleVxes.p());
return geo;
}
//--------------------------------------------------------------------------------------------------
/// Calculates the texture coordinates in a "nearly" one dimentional texture.
/// Undefined values are coded with a y-texturecoordinate value of 1.0 instead of the normal 0.5
//--------------------------------------------------------------------------------------------------
void RivCrossSectionGeometryGenerator::textureCoordinates(cvf::Vec2fArray* textureCoords,
const RigResultAccessor* resultAccessor,
const cvf::ScalarMapper* mapper) const
{
if (!resultAccessor) return;
size_t numVertices = m_triangleVxes->size();
textureCoords->resize(numVertices);
cvf::Vec2f* rawPtr = textureCoords->ptr();
double cellScalarValue;
cvf::Vec2f texCoord;
int triangleCount = static_cast<int>(m_triangleToCellIdxMap.size());
#pragma omp parallel for private(texCoord, cellScalarValue)
for (int tIdx = 0; tIdx < triangleCount; tIdx++)
{
cellScalarValue = resultAccessor->cellScalarGlobIdx(m_triangleToCellIdxMap[tIdx]);
texCoord = mapper->mapToTextureCoord(cellScalarValue);
if (cellScalarValue == HUGE_VAL || cellScalarValue != cellScalarValue) // a != a is true for NAN's
{
texCoord[1] = 1.0f;
}
size_t j;
for (j = 0; j < 3; j++)
{
rawPtr[tIdx*3 + j] = texCoord;
}
}
}

24
ApplicationCode/ModelVisualization/RivCrossSectionGeometryGenerator.h
View File

@ -25,7 +25,7 @@
#include <vector>
class RigMainGrid;
class RigResultAccessor;
namespace cvf
{
@ -43,20 +43,26 @@ public:
~RivCrossSectionGeometryGenerator();
void textureCoordinates(cvf::Vec2fArray* textureCoords,
const cvf::ScalarMapper* mapper, size_t scalarResultIndex) const;
void textureCoordinates(cvf::Vec2fArray* textureCoords,
const RigResultAccessor* resultAccessor,
const cvf::ScalarMapper* mapper) const;
// Mapping between cells and geometry
cvf::ref<cvf::Array<size_t> > triangleToCellIndex() const;
const std::vector<size_t>& triangleToCellIndex() const;
// Generated geometry
cvf::ref<cvf::DrawableGeo> generateSurface();
cvf::ref<cvf::DrawableGeo> createMeshDrawable();
cvf::ref<cvf::DrawableGeo> generateSurface();
//cvf::ref<cvf::DrawableGeo> createMeshDrawable();
private:
void calculateArrays();
void calculateArrays();
std::vector<cvf::Vec3d> m_triangleVxes;
std::vector<size_t> m_triangleToCellIdxMap;
cvf::ref<cvf::Vec3fArray> m_triangleVxes;
std::vector<size_t> m_triangleToCellIdxMap;
cvf::cref<RigMainGrid> m_mainGrid;
std::vector<cvf::Vec3d> m_polyLine;
cvf::Vec3d m_extrusionDirection;
};