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[diderot] Diff of /branches/pure-cfg/TODO
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Diff of /branches/pure-cfg/TODO

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revision 821, Wed Apr 13 23:17:35 2011 UTC revision 943, Fri Apr 22 14:18:52 2011 UTC
# Line 2  Line 2 
2  SHORT TERM =============  (for curvature-based VR)  SHORT TERM =============  (for curvature-based VR)
3  ========================  ========================
4    
 want: warnings when D (and likely I) is declared as a  
 variable name (now get confusing error messages now)  
   
 For RGB color output of 2D transfer function (indexed by  
 kappa1,kappa2), or for a 1D transfer function, will need  
 something akin to convolution on vector images  
   
5  IL support for higher-order tensor values (matrices, etc).  IL support for higher-order tensor values (matrices, etc).
6      tensor construction [DONE]      tensor construction [DONE]
7      tensor indexing [DONE]      tensor indexing [DONE]
8      tensor slicing      tensor slicing
9      verify that hessians work correctly      verify that hessians work correctly [DONE]
10    
11  Outer products [DONE]  Outer products [DONE]
12    
13  Add M dot v, v dot M, and M dot N [DONE]  Add M dot v, v dot M, and M dot N [DONE]
14    
15  Identity matrix [DONE up to code generation]  Identity matrix [DONE]
16    
17    Zero tensor [DONE]
18    
19  trace [DONE]  trace [DONE]
20    
21  extend norm (|exp|) to tensor[3,3]  extend norm (|exp|) to tensor[3,3] [DONE]
22    
23    Matrix addition, subtraction, and scaling  [DONE]
24    
25  Use ∇⊗ etc. syntax  Use ∇⊗ etc. syntax
26      syntax [DONE]      syntax [DONE]
# Line 40  Line 37 
37    
38  lerp on scalars and vectors [DONE]  lerp on scalars and vectors [DONE]
39    
40    Infix "^" operator for pow() [DONE]
41    
42    Code generation support for 1D image data, such as RGBA transfer functions [DONE]
43    
44  ==============================  ==============================
45  other SHORT TERM =============  (including needed for LIC)  other SHORT TERM =============  (including needed for LIC)
46  ==============================  ==============================
47    
48  determinant ("det") for tensor[3,3]  test/uninit.diderot:
49    documents need for better compiler error messages when output variables
50  Decide if we want to allow redefinitions of variables  are not initialized; the current messages are very cryptic
   (as in vr-lite-cam.diderot)  
   
 extend norm (|exp|) to all tensor types  
51    
52  extend normalize to all tensor types  determinant ("det") for tensor[3,3]
53    
54  vector fields: convolution on vector images  extend norm (|exp|) to all tensor types [DONE for vectors and matrices]
55    
56  expand trace in mid to low translation  expand trace in mid to low translation
57    
# Line 64  Line 62 
62      rgba = real{4}      rgba = real{4}
63    
64  ==============================  ==============================
65  MEDIUM TERM ================== (needed for streamlines & tractography)  MEDIUM TERM ================== (including needed for streamlines & tractography)
66  ==============================  ==============================
67    
68    ability to declare a field in such a way so that probe
69    positions are *always* clamped to the support of "inside";
70    there are many cases where this is the sensible behavior
71    
72  ability to emit/track/record variables into dynamically re-sized  ability to emit/track/record variables into dynamically re-sized
73  runtime buffer  runtime buffer
74    
# Line 74  Line 76 
76    
77  tensor fields: convolution on general tensor images  tensor fields: convolution on general tensor images
78    
79    Use of Teem's "hest" command-line parser for getting
80    any input variables that are not defined in the source file
81    
82    Save Diderot output to nrrd, instead of "mip.txt"
83      For grid of strands, save to similarly-shaped array
84      For list of strands, save to long 1-D (or 2-D for non-scalar output) list
85      For ragged things (like tractography output), will need to save both
86        complete list of values, as well as list of start indices and lengths
87        to index into complete list
88    
89  ==============================  ==============================
90  other MEDIUM TERM ============ (needed for particles)  other MEDIUM TERM ============ (needed for particles)
91  ==============================  ==============================
# Line 89  Line 101 
101    
102  proper handling of stabilize method  proper handling of stabilize method
103    
104  Add support for code like  test/vr-kcomp2.diderot: Add support for code like
105    
106          (F1 if x else F2)@pos          (F1 if x else F2)@pos
107    
# Line 100  Line 112 
112  other MEDIUM TERM ============  other MEDIUM TERM ============
113  ==============================  ==============================
114    
115  support fog Python interop and GUI  want: warnings when "D" (reserved for differentiation) is declared as
116    a variable name (get confusing error messages now)
117    
118    support for Python interop and GUI
119    
120  ==============================  ==============================
121  LONG TERM ====================  LONG TERM ====================
122  ==============================  ==============================
123    
124  Better handling of variables that determines the scope of a variable based on its actual use,  Better handling of variables that determines the scope of a variable
125  instead of where the user defined it.  So, for example, we should lift strand-invariant variables  based on its actual use, instead of where the user defined it.  So,
126  to global scope.  Also prune out useless variables, which should include field variables after the  for example, we should lift strand-invariant variables to global
127  translation to mid-il.  scope.  Also prune out useless variables, which should include field
128    variables after the translation to mid-il.
129    
130  co- vs contra- index distinction  co- vs contra- index distinction
131    
# Line 134  Line 150 
150  BUGS =================  BUGS =================
151  ======================  ======================
152    
153    test/norm2.diderot:
154    "normalize()" doesn't work on vec2
155    
156    test/fields.diderot:
157    documents various bugs/questions associated with field expressions
158    
159  test/mip-cam.diderot:  test/mip-cam.diderot:
160      // generated C code looks like "(float)p_ui_0--0.5e0f"      // generated C code looks like "(float)p_ui_0--0.5e0f"
161      //real rayU = 2.0*camUmax*(real(ui) - -0.5)/real(imgResU) - camUmax;      //real rayU = 2.0*camUmax*(real(ui) - -0.5)/real(imgResU) - camUmax;
# Line 151  Line 173 
173  //  uncaught exception Size [size]  //  uncaught exception Size [size]
174  //    raised at c-target/c-target.sml:47.15-47.19  //    raised at c-target/c-target.sml:47.15-47.19
175  //field#4(3)[] F = img ⊛ bspln5;  //field#4(3)[] F = img ⊛ bspln5;
   
   

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