28 #ifndef vtkSPHQuarticKernel_h
29 #define vtkSPHQuarticKernel_h
31 #include "vtkFiltersPointsModule.h"
35 VTK_ABI_NAMESPACE_BEGIN
63 double tmp1 = 2.5 - (std::min)(d, 2.5);
64 double tmp2 = 1.5 - (std::min)(d, 1.5);
65 double tmp3 = 0.5 - (std::min)(d, 0.5);
66 return (tmp1 * tmp1 * tmp1 * tmp1 - 5.0 * tmp2 * tmp2 * tmp2 * tmp2 +
67 10.0 * tmp3 * tmp3 * tmp3 * tmp3);
78 double tmp1 = 2.5 - (std::min)(d, 2.5);
79 double tmp2 = 1.5 - (std::min)(d, 1.5);
80 double tmp3 = 0.5 - (std::min)(d, 0.5);
81 return (-4.0 * tmp1 * tmp1 * tmp1 + 20.0 * tmp2 * tmp2 * tmp2 - 40.0 * tmp3 * tmp3 * tmp3);
represent and manipulate point attribute data
abstract class to specify dataset behavior
double ComputeFunctionWeight(const double d) override
Compute weighting factor given a normalized distance from a sample point.
dynamic, self-adjusting array of double
a simple class to control print indentation
double ComputeDerivWeight(const double d) override
Compute weighting factor for derivative quantities given a normalized distance from a sample point...
abstract class to quickly locate points in 3-space
list of point or cell ids
void Initialize(vtkAbstractPointLocator *loc, vtkDataSet *ds, vtkPointData *pd) override
Produce the computational parameters for the kernel.
void PrintSelf(ostream &os, vtkIndent indent) override
Standard methods for instantiation, obtaining type information, and printing.
a quartic SPH interpolation kernel
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on...
a family of SPH interpolation kernels