[讨论]LightToolsVsTracePro [复制链接]

  TracePro Overview G B&:G V  
uJ8x  
Like LightTools, TracePro is an solid-modeling based illumination modeling program with a Windows-based interface and CAD import/export capability ~bGC/I;W>  
)qd={  
TracePro modeling capabilities are similar to LightTools but with significant weaknesses that make it harder to use and less flexible, and is especially limited in 3D texture modeling compared to LightTools 37jQ'O U  
x`L+7,&n  
TracePro analysis features are similar to LightTools, but LightTools is much stronger as an interactive design AND analysis tool

TracePro Weaknesses AIv<f9*.:  
[zx|eG<&-  
User Interface &
=NJ  
Must move/rotate objects by dialog box only r&Qt_  
Default naming convention (for spheres/elements, etc) is confusing and ambiguous u GAh7Sop  
O]bKNA.5  
Modeling ^vW$XRnt  
Most elements cannot be edited hLo>R'@uN  
  Must be deleted and recreated (including optical properties) j/' g$  
No unboolean capability KC]tY9 FK  
Boolean limited to two objects at a time gi1j/j7  
3D texture very limited vs. LT

TracePro Weaknesses {lMqcK  
cd+^=esSO  
Ray Trace pl?kS8#U?  
No interactive (point & shoot) ray trace m/{Y]D{2  
No point sources; no volume sources }7Jp :.qk  
Clipped Lambertian sources are difficult (LED or fiber output) RAwk7F3qn  
#fN/LO  
Analysis XECikld>  
No illumination error estimate pND48 g;  
Only 4 preset bins “available” zWtj|%ts  
No 2D intensity distributions of full spheres G:DSWW}  
Limited ray sorting options

LT Strengths vs. TracePro 0R*}QXph  
GZS{
&w!  
LT has excellent design features vs. TracePro A]#_"fayo  
Interactive ray trace m|mG;8}pI  
Editable geometry <ZV7|'^  
More powerful macro language in LT (VB/COM/Excel/etc. vs. Scheme) f}%sO  
DP0Z*8Ia  
TracePro features not fully or well implemented aoK4Du{  
3D textures Kn.iyR  
Source definition
],AbcTX  
Many others

TracePro/LT Feature Checklist ijg,'a~3E  
u$\Tg3du2  
Recent LT features addressing TracePro competition ypxC1E  
New LT 4.0 User Interface h|)2'07  
Accelerated Ray Tracing (improved in 5.0) >|(WS.n3C  
AOI and Wavelength Scattering capabilities jD<9=B(g  
Powerful 3D texture modeling for backlights (greatly expanded in v5.1 available 12/04) ,~iFEaV+  
 X+\0%|  
TracePro features not in LT 8`6 LMQ  
Ray trace through GRIN material 1/!nV  
Birefringent ray tracing

Misc. Comparisons, LT vs. TP m79m{!q$-  
j^:b-:F  
Some large CAD models consume 20-30% more RAM and more CPU time in TP vs. LT
)_WH#-}  
Sv~PXi^`H  
TP CAD import repair feature much slower than LT [@jp9D H  
U. NeK{  
Inability to edit properties of Booleaned objects in TP (easy and unlimited in LT) aIY$5
^x  
`;R|V  
Luminance meter simulation is simple approximation in TP, much more flexible and accurate in LT L>eQ*311  
VNr!|bp5  
Most operations in LT can be done by mouse, by numeric input, or any combination (fewer TP features are mouse-enabled) HdDo&#  

\t[ hg  
LT online help is extensive and useful, but very limited in TP ~y( ,EO  
^Jc$BMaVg  
ORA Tech Support for LT is by a dedicated team or experience illumination and optical engineers

3D Texture Comparisons BHIZHp  
,K"r:)\  
3D texture modeling more flexible and much faster to ray trace in LT vs. TP 1==P.d(  
rerUM*0  
LT (5.1) has flexible features to parametrically vary all 3D texture features (spacing, size, angles, depth, etc.) by equation or by direct “placement lists” imported from spreadsheet or other software :T8u?@.  
ZP]2/;h  
When optimization is available in 2005, these parametric textures will make it much easier to design backlight systems

Coming Soon in LightTools &VtWSq-)  
eHfG;NsV/  
*+4>iL*:  
Photorealistic rendering will be introduced in LightTools in 2005 RBMMXJ
j  
    Available now in TP, but feature is poorly implemented 8=!rnJCav  
][T9IAn  
Illumination optimization including special backlight design features will be introduced in 2005 3M`hn4)K  
    Has been demonstrated in papers, ORA demos, and limited customer testing in 2004 j};pv2  
    :~qtvs;{  
    Is now being developed for maximum ease of use for typical users and applications       without user programming

看来楼主对这两个软件深有了解吗！佩服佩服...

Shiloh,你好！你的帖子非常好！谢谢！