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0025004: Extrema curve/curve incorrect result

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Fixed bug in extrema clustering algorithm.
Tolerances changing is available now.
Testcase with Branin function added.

Test cases for issue CR25004
This commit is contained in:
aml
2014-07-03 16:00:36 +04:00
committed by apn
parent 5b14f80036
commit 5493d33411
11 changed files with 402 additions and 83 deletions
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29
src/math/math_GlobOptMin.hxx
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@@ -31,16 +31,26 @@ public:
Standard_EXPORT math_GlobOptMin(math_MultipleVarFunction* theFunc,
const math_Vector& theA,
const math_Vector& theB,
Standard_Real theC = 9);
const Standard_Real theC = 9,
const Standard_Real theDiscretizationTol = 1.0e-2,
const Standard_Real theSameTol = 1.0e-7);
Standard_EXPORT void SetGlobalParams(math_MultipleVarFunction* theFunc,
const math_Vector& theA,
const math_Vector& theB,
Standard_Real theC = 9);
const Standard_Real theC = 9,
const Standard_Real theDiscretizationTol = 1.0e-2,
const Standard_Real theSameTol = 1.0e-7);
Standard_EXPORT void SetLocalParams(const math_Vector& theLocalA,
const math_Vector& theLocalB);
Standard_EXPORT void SetTol(const Standard_Real theDiscretizationTol,
const Standard_Real theSameTol);
Standard_EXPORT void GetTol(Standard_Real& theDiscretizationTol,
Standard_Real& theSameTol);
Standard_EXPORT ~math_GlobOptMin();
Standard_EXPORT void Perform();
@@ -54,6 +64,8 @@ public:
//! Return solution i, 1 <= i <= NbExtrema.
Standard_EXPORT void Points(const Standard_Integer theIndex, math_Vector& theSol);
Standard_Boolean isDone();
private:
math_GlobOptMin & operator = (const math_GlobOptMin & theOther);
@@ -66,8 +78,6 @@ private:
Standard_Boolean isInside(const math_Vector& thePnt);
Standard_Boolean isStored(const math_Vector &thePnt);
Standard_Boolean isDone();
// Input.
math_MultipleVarFunction* myFunc;
@@ -76,6 +86,11 @@ private:
math_Vector myB; // Right border on current C2 interval.
math_Vector myGlobA; // Global left border.
math_Vector myGlobB; // Global right border.
Standard_Real myTol; // Discretization tolerance, default 1.0e-2.
Standard_Real mySameTol; // points with ||p1 - p2|| < mySameTol is equal,
// function values |val1 - val2| * 0.01 < mySameTol is equal,
// default value is 1.0e-7.
Standard_Real myC; //Lipschitz constant, default 9
// Output.
Standard_Boolean myDone;
@@ -84,14 +99,14 @@ private:
// Algorithm data.
Standard_Real myZ;
Standard_Real myC; //Lipschitz constant
Standard_Real myE1; // Border coeff.
Standard_Real myE2; // Minimum step size.
Standard_Real myE3; // Local extrema starting parameter.
math_Vector myX; // Current modified solution
math_Vector myTmp; // Current modified solution
math_Vector myX; // Current modified solution.
math_Vector myTmp; // Current modified solution.
math_Vector myV; // Steps array.
math_Vector myMaxV; // Max Steps array.
Standard_Real myF; // Current value of Global optimum.
};