| /*****************************************************************************/ |
| // Copyright 2006-2007 Adobe Systems Incorporated |
| // All Rights Reserved. |
| // |
| // NOTICE: Adobe permits you to use, modify, and distribute this file in |
| // accordance with the terms of the Adobe license agreement accompanying it. |
| /*****************************************************************************/ |
| |
| /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_spline.h#1 $ */ |
| /* $DateTime: 2012/05/30 13:28:51 $ */ |
| /* $Change: 832332 $ */ |
| /* $Author: tknoll $ */ |
| |
| /*****************************************************************************/ |
| |
| #ifndef __dng_spline__ |
| #define __dng_spline__ |
| |
| /*****************************************************************************/ |
| |
| #include "dng_1d_function.h" |
| #include "dng_memory.h" |
| |
| #include <vector> |
| |
| /*****************************************************************************/ |
| |
| inline real64 EvaluateSplineSegment (real64 x, |
| real64 x0, |
| real64 y0, |
| real64 s0, |
| real64 x1, |
| real64 y1, |
| real64 s1) |
| { |
| |
| real64 A = x1 - x0; |
| |
| real64 B = (x - x0) / A; |
| |
| real64 C = (x1 - x) / A; |
| |
| real64 D = ((y0 * (2.0 - C + B) + (s0 * A * B)) * (C * C)) + |
| ((y1 * (2.0 - B + C) - (s1 * A * C)) * (B * B)); |
| |
| return D; |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| class dng_spline_solver: public dng_1d_function |
| { |
| |
| protected: |
| |
| dng_std_vector<real64> X; |
| dng_std_vector<real64> Y; |
| |
| dng_std_vector<real64> S; |
| |
| public: |
| |
| dng_spline_solver (); |
| |
| virtual ~dng_spline_solver (); |
| |
| void Reset (); |
| |
| void Add (real64 x, real64 y); |
| |
| virtual void Solve (); |
| |
| virtual bool IsIdentity () const; |
| |
| virtual real64 Evaluate (real64 x) const; |
| |
| }; |
| |
| /*****************************************************************************/ |
| |
| #endif |
| |
| /*****************************************************************************/ |