[882] | 1 | |
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[932] | 2 | #include "RpDX.h" |
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[931] | 3 | #include "dxReaderCommon.h" |
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[882] | 4 | |
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| 5 | #include <stdio.h> |
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| 6 | #include <iostream> |
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| 7 | #include <fstream> |
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| 8 | |
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| 9 | // nanovis headers |
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| 10 | #include "Nv.h" |
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| 11 | #include "nanovis.h" |
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| 12 | |
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| 13 | // rappture headers |
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| 14 | #include "RpEncode.h" |
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[1325] | 15 | #include "RpOutcome.h" |
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[882] | 16 | /* Load a 3D volume from a dx-format file the new way |
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| 17 | */ |
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[1493] | 18 | Volume * |
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| 19 | load_volume_stream_odx(Rappture::Outcome &context, const char *tag, |
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| 20 | const char *buf, int nBytes) |
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[956] | 21 | { |
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[882] | 22 | char dxfilename[128]; |
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| 23 | |
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[1382] | 24 | if (nBytes <= 0) { |
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| 25 | context.error("empty data buffer\n"); |
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[1493] | 26 | return NULL; |
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[882] | 27 | } |
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| 28 | |
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| 29 | // write the dx file to disk, because DXImportDX takes a file name |
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[1028] | 30 | |
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| 31 | // You can do it like this. Give |
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[882] | 32 | sprintf(dxfilename, "/tmp/dx%d.dx", getpid()); |
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| 33 | |
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[886] | 34 | FILE *f; |
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[931] | 35 | |
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[886] | 36 | f = fopen(dxfilename, "w"); |
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[1380] | 37 | |
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| 38 | ssize_t nWritten; |
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| 39 | nWritten = fwrite(buf, sizeof(char), nBytes, f); |
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[886] | 40 | fclose(f); |
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[1380] | 41 | if (nWritten != nBytes) { |
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[1381] | 42 | context.addError("Can't read %d bytes from file \"%s\"\n", |
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[1380] | 43 | nBytes, dxfilename); |
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[1493] | 44 | return NULL; |
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[1380] | 45 | } |
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[882] | 46 | |
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[1381] | 47 | Rappture::DX dxObj(context, dxfilename); |
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[882] | 48 | |
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[1325] | 49 | if (unlink(dxfilename) != 0) { |
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[1381] | 50 | context.addError("Error deleting dx file: %s\n", dxfilename); |
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[1493] | 51 | return NULL; |
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[931] | 52 | } |
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[882] | 53 | |
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[956] | 54 | int nx = dxObj.axisLen()[0]; |
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| 55 | int ny = dxObj.axisLen()[1]; |
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| 56 | int nz = dxObj.axisLen()[2]; |
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| 57 | float dx = nx; |
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| 58 | float dy = ny; |
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| 59 | float dz = nz; |
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[882] | 60 | |
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[956] | 61 | const float* data1 = dxObj.data(); |
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| 62 | float *data = new float[nx*ny*nz*4]; |
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| 63 | memset(data, 0, nx*ny*nz*4); |
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| 64 | int iz=0, ix=0, iy=0; |
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| 65 | float dv = dxObj.dataMax() - dxObj.dataMin(); |
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| 66 | float vmin = dxObj.dataMin(); |
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[882] | 67 | |
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[956] | 68 | for (int i=0; i < nx*ny*nz; i++) { |
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| 69 | int nindex = (iz*nx*ny + iy*nx + ix) * 4; |
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| 70 | float v = data1[i]; |
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[931] | 71 | |
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[956] | 72 | // scale all values [0-1], -1 => out of bounds |
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| 73 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
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[931] | 74 | |
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[956] | 75 | // place the value in the correct index in cdata |
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| 76 | data[nindex] = v; |
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| 77 | |
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| 78 | // calculate next x,y,z coordinate |
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| 79 | if (++iz >= nz) { |
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| 80 | iz = 0; |
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| 81 | if (++iy >= ny) { |
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| 82 | iy = 0; |
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| 83 | ++ix; |
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| 84 | } |
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| 85 | } |
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[882] | 86 | } |
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[931] | 87 | |
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[956] | 88 | computeSimpleGradient(data, nx, ny, nz); |
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| 89 | |
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[931] | 90 | fprintf(stdout,"nx = %i ny = %i nz = %i\n",nx,ny,nz); |
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| 91 | fprintf(stdout,"dx = %lg dy = %lg dz = %lg\n",dx,dy,dz); |
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[956] | 92 | fprintf(stdout,"dataMin = %lg\tdataMax = %lg\tnzero_min = %lg\n", dxObj.dataMin(),dxObj.dataMax(),dxObj.nzero_min()); |
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[886] | 93 | fflush(stdout); |
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[882] | 94 | |
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[956] | 95 | Volume *volPtr; |
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[1493] | 96 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
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[1325] | 97 | dxObj.dataMin(), |
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| 98 | dxObj.dataMax(), |
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| 99 | dxObj.nzero_min()); |
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[959] | 100 | const float *origin = dxObj.origin(); |
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| 101 | const float *max = dxObj.max(); |
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[931] | 102 | |
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[959] | 103 | volPtr->xAxis.SetRange(origin[0], max[0]); |
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| 104 | volPtr->yAxis.SetRange(origin[1], max[1]); |
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| 105 | volPtr->zAxis.SetRange(origin[2], max[2]); |
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[961] | 106 | volPtr->wAxis.SetRange(dxObj.dataMin(), dxObj.dataMax()); |
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[956] | 107 | volPtr->update_pending = true; |
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[959] | 108 | |
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[961] | 109 | delete [] data; |
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[956] | 110 | |
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[931] | 111 | // |
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| 112 | // Center this new volume on the origin. |
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| 113 | // |
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[886] | 114 | float dx0 = -0.5; |
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| 115 | float dy0 = -0.5*dy/dx; |
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| 116 | float dz0 = -0.5*dz/dx; |
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[1478] | 117 | volPtr->location(Vector3(dx0, dy0, dz0)); |
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[1493] | 118 | return volPtr; |
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[882] | 119 | } |
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