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b2e6f0b0 | 1 | #ifndef ALIFMDSURVEYTOALIGNOBJS_H |
2 | #define ALIFMDSURVEYTOALIGNOBJS_H | |
3 | #include <AliSurveyToAlignObjs.h> | |
f567c3ce | 4 | #include <TGeoMatrix.h> |
b2e6f0b0 | 5 | |
6 | // Forward decl | |
7 | class TVector3; | |
f567c3ce | 8 | class TGeoMatrix; |
b2e6f0b0 | 9 | |
10 | ||
f567c3ce | 11 | /** |
12 | * Class to take survey data and transform that to alignment objects. | |
13 | * | |
14 | */ | |
b2e6f0b0 | 15 | class AliFMDSurveyToAlignObjs : public AliSurveyToAlignObjs |
16 | { | |
17 | public: | |
f567c3ce | 18 | /** |
19 | * Constructor | |
20 | * | |
21 | */ | |
638bc5af | 22 | AliFMDSurveyToAlignObjs() : AliSurveyToAlignObjs(), |
23 | fFMD1Delta(0), | |
24 | fFMD2Delta(0) {} | |
f567c3ce | 25 | /** |
26 | * Run the task. | |
27 | * | |
28 | */ | |
b2e6f0b0 | 29 | void Run(); |
f567c3ce | 30 | /** |
31 | * | |
32 | * Method to create the alignment objects | |
33 | * | |
34 | * @return @c true on success, @c false otherwise | |
35 | */ | |
36 | Bool_t CreateAlignObjs(); | |
37 | ||
38 | ||
39 | TClonesArray* GetAlignObjArray() const { return fAlignObjArray; } | |
40 | ||
b2e6f0b0 | 41 | protected: |
f567c3ce | 42 | /** |
43 | * Do the FMD1 analysis. We have 4 survey targets on V0-A on the | |
44 | * C-side. These are | |
45 | * | |
46 | * - V0A_ICT In-side, C-side, top. | |
47 | * - V0A_ICB In-side, C-side, bottom. | |
48 | * - V0A_OCT Out-side, C-side, top. | |
49 | * - V0A_OCB Out-side, C-side, bottom. | |
50 | * | |
51 | * These 4 survey targets sit 3.3mm over the V0-A C-side surface, or | |
52 | * 3.3mm over the back surface of FMD1. | |
53 | * | |
54 | * Since these are really sitting on a plane, we can use the method | |
55 | * proposed by the CORE offline. | |
56 | * | |
57 | * @return @c true on success, @c false otherwise. | |
58 | */ | |
faf80567 | 59 | Bool_t DoFMD1(); |
f567c3ce | 60 | /** |
61 | * Get the FMD1 plane from the survey points | |
62 | * | |
63 | * @param rot Rotation matrix (direction cosines) | |
64 | * @param trans Translation | |
65 | * | |
66 | * @return @c true on success, @c false otherwise. | |
67 | */ | |
faf80567 | 68 | Bool_t GetFMD1Plane(Double_t* rot, Double_t* trans) const; |
f567c3ce | 69 | /** |
70 | * Do the FMD2 calculations. We have 6 survey points of which only | |
71 | * 5 are normally surveyed. These are all sittings | |
72 | * | |
73 | * - FMD2_ITOP - In-side, top | |
74 | * - FMD2_IBOTM - In-side, middle bottom | |
75 | * - FMD2_IBOT - In-side, bottom | |
76 | * - FMD2_OTOP - Out-side, top | |
77 | * - FMD2_OBOTM - Out-side, middle bottom | |
78 | * - FMD2_OBOT - Out-side, bottom | |
79 | * | |
80 | * The nominal coordinates of these retro-fitted survey stickers | |
81 | * isn't known. Also, these stickers are put on a thin (0.3mm | |
82 | * thick) carbon cover which flexes quite easily. This means, that | |
83 | * to rotations and xy-translation obtained from the survey data | |
84 | * cannot be used, and left is only the z-translation. | |
85 | * | |
86 | * Further more, since FMD2 to is attached to the ITS SPD thermal | |
87 | * screen, it is questionable if the FMD2 survey will ever be used. | |
88 | * | |
89 | * @return @c true on success, @c false otherwise. | |
90 | */ | |
b2e6f0b0 | 91 | Bool_t DoFMD2(); |
f567c3ce | 92 | /** |
93 | * Get the surveyed plane corresponding to the backside of FMD2. | |
94 | * The plane is done as a best fit of the plane equation to at least | |
95 | * 4 of the available survey points. | |
96 | * | |
97 | * @param rot Rotation matrix (direction cosines) | |
98 | * @param trans Translation vector. | |
99 | * | |
100 | * @return @c true on success, @c false otherwise | |
101 | */ | |
faf80567 | 102 | Bool_t GetFMD2Plane(Double_t* rot, Double_t* trans) const; |
f567c3ce | 103 | /** |
104 | * Get the factor to translate current coordinates to the canonical | |
105 | * unit (centi-meters). | |
106 | * | |
107 | * @return Conversion factor | |
108 | */ | |
faf80567 | 109 | Double_t GetUnitFactor() const; |
f567c3ce | 110 | /** |
111 | * Get the coordinates of a survey point (if available). | |
112 | * | |
113 | * @param name Name of the survey point. | |
114 | * @param p Coordinates. | |
115 | * @param e Error on the measurement. | |
116 | * | |
117 | * @return @c true if the survey data is available, @c false otherwise. | |
118 | */ | |
faf80567 | 119 | Bool_t GetPoint(const char* name, TVector3& p, TVector3& e) const; |
f567c3ce | 120 | /** |
121 | * Calculate the plane translation and rotation from 3 survey points | |
122 | * | |
123 | * @param a 1st Survey point | |
124 | * @param b 2nd Survey point | |
125 | * @param c 3rd Survey point | |
126 | * @param trans Translation vector | |
127 | * @param rot Rotation matrix (direction cosines) | |
128 | * | |
129 | * @return | |
130 | */ | |
faf80567 | 131 | Bool_t CalculatePlane(const TVector3& a, |
132 | const TVector3& b, | |
f567c3ce | 133 | const TVector3& c, |
134 | Double_t depth, | |
faf80567 | 135 | Double_t* trans, |
136 | Double_t* rot) const; | |
f567c3ce | 137 | /** |
138 | * Calculate the plane rotation and translation by doing a fit of | |
139 | * the plane equation to the surveyed points. At least 4 points | |
140 | * must be passed in the @a points array with corresponding errors | |
141 | * in the array @a errors. The arrays are assumed to contain | |
142 | * TVector3 objects. | |
143 | * | |
144 | * @param points Array surveyed positions | |
145 | * @param errors Array of errors corresponding to @a points | |
146 | * @param depth Survey targets depth (perpendicular to the plane) | |
147 | * @param trans On return, translation of the plane | |
148 | * @param rot On return, rotation (direction cosines) of the plane | |
149 | * | |
150 | * @return @c true on success, @c false otherwise | |
151 | */ | |
152 | Bool_t FitPlane(const TObjArray& points, | |
153 | const TObjArray& errors, | |
154 | Double_t depth, | |
155 | Double_t* trans, | |
156 | Double_t* rot) const; | |
157 | /** | |
158 | * Create a delta transform from a global rotation matrix and | |
159 | * translation. | |
160 | * | |
161 | * @param global Global matrix of element to transform. | |
162 | * @param rot Rotation matrix (direction cosines) | |
163 | * @param trans Translation | |
164 | * @param delta On return, the delta transform | |
165 | * | |
166 | * @return Newly | |
167 | */ | |
168 | Bool_t MakeDelta(TGeoMatrix* global, | |
169 | Double_t* rot, | |
170 | Double_t* trans, | |
171 | TGeoHMatrix& delta) const; | |
172 | /** | |
173 | * Create a delta transform from a global rotation matrix and | |
174 | * translation. | |
175 | * | |
176 | * @param path Path of element to transform. | |
177 | * @param rot Rotation matrix (direction cosines) | |
178 | * @param trans Translation | |
179 | * @param delta On return, the delta transform | |
180 | * | |
181 | * @return Newly | |
182 | */ | |
183 | Bool_t MakeDelta(const char* path, | |
184 | Double_t* rot, | |
185 | Double_t* trans, | |
186 | TGeoHMatrix& delta) const; | |
187 | /** | |
188 | * Service member function to print a vector | |
189 | * | |
190 | * @param text Prefix text | |
191 | * @param v Vector (array of 3 doubles) | |
192 | */ | |
b2e6f0b0 | 193 | static void PrintVector(const char* text, const Double_t* v); |
f567c3ce | 194 | /** |
195 | * Service member function to print a vector | |
196 | * | |
197 | * @param text Prefix text | |
198 | * @param v Vector | |
199 | */ | |
b2e6f0b0 | 200 | static void PrintVector(const char* text, const TVector3& v); |
f567c3ce | 201 | /** |
202 | * Service member function to print a rotation matrix | |
203 | * | |
204 | * @param text Prefix text | |
205 | * @param v Matrix (array of 9 doubles) | |
206 | */ | |
b2e6f0b0 | 207 | static void PrintRotation(const char* text, const Double_t* rot); |
208 | ||
f567c3ce | 209 | TGeoHMatrix fFMD1Delta; // FMD1 delta transform |
210 | TGeoHMatrix fFMD2Delta; // FMD2 delta transform | |
b2e6f0b0 | 211 | |
212 | ClassDef(AliFMDSurveyToAlignObjs,0) // Convert FMD survey to alignments | |
213 | }; | |
214 | ||
215 | ||
216 | #endif | |
217 | //____________________________________________________________________ | |
218 | // | |
219 | // Local Variables: | |
220 | // mode: C++ | |
221 | // End: | |
222 | // | |
223 |