OilfieldToolsNet/ResInsight
4
0
Fork 0
mirror of https://github.com/OPM/ResInsight.git synced 2025-02-25 18:55:39 -06:00
Code Issues Packages Projects Releases Wiki Activity

(#397) Added geometry methods to be used for well log data extraction

Browse Source
This commit is contained in:
Jacob Støren 2015-08-28 08:08:45 +02:00
parent 0133659e05
commit 371902378e
2 changed files with 58 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
ApplicationCode/ReservoirDataModel/cvfGeometryTools.cpp
View File

@ -493,6 +493,58 @@ cvf::Vec3d GeometryTools::barycentricCoords(const cvf::Vec3d& t0, const cvf::Ve
return m;
}
inline double triArea3D(const cvf::Vec3d& v0,
const cvf::Vec3d& v1,
const cvf::Vec3d& v2)
{
return 0.5 * ((v1-v0) ^ (v2 - v0)).length();
}
//--------------------------------------------------------------------------------------------------
/// Barycentric coordinates of a Quad
/// See http://geometry.caltech.edu/pubs/MHBD02.pdf for details
/// W_i = a_i / Sum(a_0 ... a_3)
/// a_i = Area(v_(i-1), v_i, v_(i+1))*Area(p, v_(i-2), v_(i-1))*Area(p, v_(i+1), v_(i+2))
//--------------------------------------------------------------------------------------------------
cvf::Vec4d GeometryTools::barycentricCoords(const cvf::Vec3d& v0,
const cvf::Vec3d& v1,
const cvf::Vec3d& v2,
const cvf::Vec3d& v3,
const cvf::Vec3d& p)
{
cvf::Vec4d w;
cvf::Vec4d a;
a[0] = triArea3D(v3, v0, v1)*triArea3D(p, v2, v3)*triArea3D(p, v1, v2);
a[1] = triArea3D(v0, v1, v2)*triArea3D(p, v3, v0)*triArea3D(p, v2, v3);
a[2] = triArea3D(v1, v2, v3)*triArea3D(p, v0, v1)*triArea3D(p, v3, v0);
a[3] = triArea3D(v2, v3, v0)*triArea3D(p, v1, v2)*triArea3D(p, v0, v1);
double sum_a = a[0] + a[1] + a[2] + a[3];
w[0] = a[0]/sum_a;
w[1] = a[1]/sum_a;
w[2] = a[2]/sum_a;
w[3] = a[3]/sum_a;
return w;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double GeometryTools::interpolateQuad(const cvf::Vec3d& v1, double s1,
const cvf::Vec3d& v2, double s2,
const cvf::Vec3d& v3, double s3,
const cvf::Vec3d& v4, double s4,
const cvf::Vec3d& point)
{
cvf::Vec4d bc = barycentricCoords(v1, v2, v3, v4, point);
return s1*bc[0] + s2*bc[1] + s3*bc[2] + s4*bc[3];
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------

6
ApplicationCode/ReservoirDataModel/cvfGeometryTools.h
View File

@ -41,6 +41,12 @@ public:
const cvf::Vec3d t0, const cvf::Vec3d t1, const cvf::Vec3d t2,
cvf::Vec3d* intersectionPoint );
static cvf::Vec3d barycentricCoords(const cvf::Vec3d& t0, const cvf::Vec3d& t1, const cvf::Vec3d& t2, const cvf::Vec3d& p);
static cvf::Vec4d barycentricCoords(const cvf::Vec3d& v0, const cvf::Vec3d& v1, const cvf::Vec3d& v2, const cvf::Vec3d& v3, const cvf::Vec3d& p);
static double interpolateQuad(const cvf::Vec3d& v1, double s1,
const cvf::Vec3d& v2, double s2,
const cvf::Vec3d& v3, double s3,
const cvf::Vec3d& v4, double s4,
const cvf::Vec3d& point);
static int findClosestAxis(const cvf::Vec3d& vec );
static double getAngle(const cvf::Vec3d& positiveNormalAxis, const cvf::Vec3d& v1, const cvf::Vec3d& v2);