[讨论]LightToolsVsTracePro [复制链接]

  TracePro Overview nU/v(lN  
|n0 )s% 8`  
Like LightTools, TracePro is an solid-modeling based illumination modeling program with a Windows-based interface and CAD import/export capability norWNm(n  
I'C{=?  
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 gXG1w>  
$U<xrN>O  
TracePro analysis features are similar to LightTools, but LightTools is much stronger as an interactive design AND analysis tool

TracePro Weaknesses p9Ks=\yvL  
;g*ab
 
User Interface MAhcwmZNy  
Must move/rotate objects by dialog box only EI]NOG 0  
Default naming convention (for spheres/elements, etc) is confusing and ambiguous jg#%h`  
#R@{Bu=C  
Modeling [|e7oNT(Q  
Most elements cannot be edited &p0*:(j  
  Must be deleted and recreated (including optical properties) 5
9IxY
?  
No unboolean capability nxCwg>  
Boolean limited to two objects at a time 8 yQjB-,#  
3D texture very limited vs. LT

TracePro Weaknesses r1
)Og  
._Wm%'uX  
Ray Trace noV]+1#"V  
No interactive (point & shoot) ray trace zaf%%  
No point sources; no volume sources I HgYgn  
Clipped Lambertian sources are difficult (LED or fiber output) $xJVUV  
"8>*O;xk  
Analysis +2!F6"hP  
No illumination error estimate ANZD7v6a  
Only 4 preset bins “available” y7txIe!<5  
No 2D intensity distributions of full spheres 22)2o
lU  
Limited ray sorting options

LT Strengths vs. TracePro 1$]4g/":o  
i!@L`h!rw  
LT has excellent design features vs. TracePro =Wn11JGh  
Interactive ray trace -Xb]=Yf-  
Editable geometry hlWTsi4N  
More powerful macro language in LT (VB/COM/Excel/etc. vs. Scheme) wz3BtCx  
p(fYpD  
TracePro features not fully or well implemented ?KDI'>"-v  
3D textures F 0q#.   
Source definition x|&A^hQ  
Many others

TracePro/LT Feature Checklist 4IuQQ  
x>THyY[sq  
Recent LT features addressing TracePro competition x<W`2Du  
New LT 4.0 User Interface R/&Bze  
Accelerated Ray Tracing (improved in 5.0) n@r'b{2;l  
AOI and Wavelength Scattering capabilities `Hld#+R  
Powerful 3D texture modeling for backlights (greatly expanded in v5.1 available 12/04) dt%waM!  
cPZD#";f  
TracePro features not in LT v0&E!4q*'  
Ray trace through GRIN material :f<3`x'  
Birefringent ray tracing

Misc. Comparisons, LT vs. TP xO"fg9a  
P0WI QG+  
Some large CAD models consume 20-30% more RAM and more CPU time in TP vs. LT :d\ne  
jp?;8rS3  
TP CAD import repair feature much slower than LT T5(]/v,UT  
MW*@fl<@?M  
Inability to edit properties of Booleaned objects in TP (easy and unlimited in LT) ,*ZdMw!  
A82Bn|J  
Luminance meter simulation is simple approximation in TP, much more flexible and accurate in LT ,5J-
C!C  
SUwSZ@l^|  
Most operations in LT can be done by mouse, by numeric input, or any combination (fewer TP features are mouse-enabled) s8 S[w   
xLhN3#^m  
LT online help is extensive and useful, but very limited in TP ,w&8 &wj  
c@H:?s!0R  
ORA Tech Support for LT is by a dedicated team or experience illumination and optical engineers

3D Texture Comparisons {!h|(xqN+  
(s`oJLW>  
3D texture modeling more flexible and much faster to ray trace in LT vs. TP ;o*n*N  
MR:GH.uM:  
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 <Th)&  
n-iy;L^b  
When optimization is available in 2005, these parametric textures will make it much easier to design backlight systems

Coming Soon in LightTools m2&"}bI{  
sbnNk(XINQ  
fT)u`voE,  
Photorealistic rendering will be introduced in LightTools in 2005 ACQbw)tiv}  
    Available now in TP, but feature is poorly implemented ND);7  
i"|="O0v5  
Illumination optimization including special backlight design features will be introduced in 2005 |KSd@  
    Has been demonstrated in papers, ORA demos, and limited customer testing in 2004 R7axm<PR=  
    Ut"~I)S{LT  
    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！