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[diderot] Diff of /trunk/test/vr-MIP.diderot
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Diff of /trunk/test/vr-MIP.diderot

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revision 151, Fri Jul 9 08:48:57 2010 UTC revision 206, Tue Aug 3 16:55:43 2010 UTC
# Line 4  Line 4 
4  //  //
5    
6  input string dataFile;      // name of dataset  input string dataFile;      // name of dataset
7  input real stepSz;          // size of steps  input real stepSz = 0.1;        // size of steps
8                              // e.g. 0.1                              // e.g. 0.1
9  input vec3 eye;             // location of eye point  input vec3 eye;             // location of eye point
10                              // e.g. (25,15,10)                              // e.g. (25,15,10)
11  input vec3 orig;            // location of pixel (0,0)  input vec3 orig;            // location of pixel (0,0)
12                              // e.g. (8.83877,2.5911,7.65275)                                  // e.g. txs: (8.83877,2.5911,7.65275)
13                                    // e.g. vox1: (7.45013,2.9202,5.53883)
14  input vec3 cVec;            // vector between pixels horizontally  input vec3 cVec;            // vector between pixels horizontally
15                              // e.g. (-0.0151831,0.0278357,0)                                  // e.g. txs: (-0.0151831,0.0278357,0)
16                                    // e.g. vox1: (-0.00930055,0.0164548,0)
17  input vec3 rVec;            // vector between pixels vertically  input vec3 rVec;            // vector between pixels vertically
18                              // e.g. (0.0074887,0.00408474,-0.0305383)                                  // e.g. txs: (0.0074887,0.00408474,-0.0305383)
19                                    // e.g. vox1: (0.00476876,0.00269539,-0.0180902)
20    
21  image(3)[] img = load (dataFile);  image(3)[] img = load (dataFile);
22    
# Line 25  Line 28 
28      vec3 pos = orig + real(row)*rVec + real(col)*cVec;      vec3 pos = orig + real(row)*rVec + real(col)*cVec;
29      vec3 dir = (pos - eye)/|pos - eye|;      vec3 dir = (pos - eye)/|pos - eye|;
30      real t = 0.0;      real t = 0.0;
31      real maxval = -inf;      output real maxval = -inf;
32    
33      update      update
34      {      {
35          vec3 pt = pos + t*dir;          pos = pos + stepSz*dir;
36          real val = F@pt;          if (inside (pos,F)) {
37              real val = F@pos;
38          maxval = max(val, maxval);          maxval = max(val, maxval);
39          if (t > 20)          }
40            if (t > 20.0)
41              stabilize;              stabilize;
42          t = t + stepSz;          t = t + stepSz;
43      }      }

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