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53 | |
53 | |
54 | template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } |
54 | template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } |
55 | template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; } |
55 | template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; } |
56 | |
56 | |
57 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
57 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
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58 | |
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59 | template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); } |
58 | |
60 | |
59 | // linear interpolation |
61 | // linear interpolation |
60 | template<typename T, typename U, typename P> |
62 | template<typename T, typename U, typename P> |
61 | static inline |
63 | static inline |
62 | T lerp (T a, U b, P p) |
64 | T lerp (T a, U b, P p) |