25 lines
694 B
C++
25 lines
694 B
C++
#pragma once
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#include "basics_global.h"
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namespace paysages {
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namespace basics {
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class BASICSSHARED_EXPORT Interpolation {
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public:
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static inline double linear(double p1, double p2, double x) {
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return p1 + x * (p2 - p1);
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}
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static double bilinear(double p[4], double x, double y);
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static double trilinear(double p[8], double x, double y, double z);
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static inline double cubic(double p[4], double x) {
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return p[1] +
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0.5 * x * (p[2] - p[0] +
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x * (2.0 * p[0] - 5.0 * p[1] + 4.0 * p[2] - p[3] + x * (3.0 * (p[1] - p[2]) + p[3] - p[0])));
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}
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static double bicubic(double stencil[16], double x, double y);
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};
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}
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}
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