Gabriele Cosmo
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
//***********************************************************************************************************
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// Extract_Slice.C
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// Root command file
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// Use it by typing in the command line of Root terminal: root Extract_Slice.C
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//
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//
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// More information is available in UserGuide
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// Created by Z.LI LP2i Bordeaux 2022
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//***********************************************************************************************************
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#include <math.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <vector>
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// using namespace std;
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#define PI 3.14159265f
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// Define a structure to read and write each event in the required binary format
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struct PixeEvent
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{
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uint16_t energy_10eV;
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uint16_t pixelIndex;
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uint16_t sliceIndex;
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uint8_t projectionIndex;
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};
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// to extract a certain slice or slices
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void Extract_Slice()
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{
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int start_slice = 0; // start_slice: the first slice you would like to select
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int end_slice = 0; // end_slice: the last slice you would like to select
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FILE* in = fopen("../build/PixeEvent_std_AtCreation.DAT", "rb");
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// FILE *in =fopen("PixeEvent_std_AtExit.DAT.DAT","rb");
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FILE* out = fopen("../build/PixeEvent_std_AtCreation_slice.DAT", "wb");
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// FILE* out = fopen("PixeEvent_std_AtExit_slice.DAT","wb");
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if (in == NULL) {
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printf("error for opening the intput file\n");
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return;
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}
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PixeEvent p;
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PixeEvent pp;
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while (fread(&p, 7, 1, in)) {
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if (p.sliceIndex >= start_slice && p.sliceIndex <= end_slice) {
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pp.energy_10eV = p.energy_10eV;
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pp.projectionIndex = p.projectionIndex;
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pp.sliceIndex =
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p.sliceIndex - start_slice; // index of slices should be reset, starting from 0
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pp.pixelIndex = p.pixelIndex;
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pp.pixelIndex = p.pixelIndex;
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// printf("__ProjectionIndex=%d, SliceIndex=%d, PixelIndex=%d, Energy_10eV=%d\n",
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// pp.projectionIndex, pp.sliceIndex, pp.pixelIndex, pp.energy_10eV);
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fwrite(&pp, 7, 1, out);
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}
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}
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fclose(in);
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fclose(out);
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}
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