1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef bts_FUNCTIONS_EM_H 18 #define bts_FUNCTIONS_EM_H 19 20 /** 21 * This file contains general purpose functions. 22 */ 23 24 /* ---- includes ----------------------------------------------------------- */ 25 26 #include "b_BasicEm/Functions.h" 27 28 /* ---- related objects --------------------------------------------------- */ 29 30 /* ---- typedefs ----------------------------------------------------------- */ 31 32 enum bts_AltType 33 { 34 bts_ALT_IDENTITY = 1, /* identity transformation */ 35 bts_ALT_TRANS, /* restricted to translation only */ 36 bts_ALT_TRANS_SCALE, /* restricted to translation and scale only */ 37 bts_ALT_RIGID, /* restricted to rigid transformation (translation + scale + rotation) */ 38 bts_ALT_LINEAR, /* allows all degrees of freedom for affine linear transformation */ 39 bts_ALT_TRANS_SCALE_XYZ /* restricted to translation and scaling in x,y,z directions */ 40 }; 41 42 enum bts_RBFType 43 { 44 bts_RBF_IDENTITY = 1, /* no rbf deformation */ 45 bts_RBF_LINEAR /* linear, i.e. ||r|| */ 46 }; 47 48 /* ---- constants ---------------------------------------------------------- */ 49 50 /* ---- external functions ------------------------------------------------- */ 51 52 /** compute the integer logarithm of the absolute value */ 53 uint32 bts_absIntLog2( int32 vA ); 54 55 /** compute the integer logarithm of the maximal absolute value of all arguments */ 56 uint32 bts_maxAbsIntLog2Of2( int32 v1A, int32 v2A ); 57 58 /** compute the integer logarithm of the maximal absolute value of all arguments */ 59 uint32 bts_maxAbsIntLog2Of3( int32 v1A, int32 v2A, int32 v3A ); 60 61 /** compute the integer logarithm of the maximal absolute value of all arguments */ 62 uint32 bts_maxAbsIntLog2Of4( int32 v1A, int32 v2A, int32 v3A, int32 v4A ); 63 64 #endif /* bts_FUNCTIONS_EM_H */ 65 66
