| 43 | |
| 44 | template<typename InT, typename LocT> |
| 45 | InT cubicInterpFunc(InT val[4], LocT xratio, bool spline) { |
| 46 | InT a0, a1, a2, a3; |
| 47 | if (spline) { |
| 48 | a0 = scalar<InT>(-0.5) * val[0] + scalar<InT>(1.5) * val[1] + |
| 49 | scalar<InT>(-1.5) * val[2] + scalar<InT>(0.5) * val[3]; |
| 50 | |
| 51 | a1 = scalar<InT>(1.0) * val[0] + scalar<InT>(-2.5) * val[1] + |
| 52 | scalar<InT>(2.0) * val[2] + scalar<InT>(-0.5) * val[3]; |
| 53 | |
| 54 | a2 = scalar<InT>(-0.5) * val[0] + scalar<InT>(0.5) * val[2]; |
| 55 | |
| 56 | a3 = val[1]; |
| 57 | } else { |
| 58 | a0 = val[3] - val[2] - val[0] + val[1]; |
| 59 | a1 = val[0] - val[1] - a0; |
| 60 | a2 = val[2] - val[0]; |
| 61 | a3 = val[1]; |
| 62 | } |
| 63 | |
| 64 | LocT xratio2 = xratio * xratio; |
| 65 | LocT xratio3 = xratio2 * xratio; |
| 66 | |
| 67 | return a0 * xratio3 + a1 * xratio2 + a2 * xratio + a3; |
| 68 | } |
| 69 | |
| 70 | template<typename InT, typename LocT> |
| 71 | InT bicubicInterpFunc(InT val[4][4], LocT xratio, LocT yratio, bool spline) { |
no outgoing calls
no test coverage detected