Blender2indigo 0.62beta1

[jurasek]

make sure your path is some like " /home/jarsek/indigo "
no / at the end.

i should work works well here on kubuntu..

hm..in my .conf file there is no / at the end.

greetz,
jur

[Silverman]

Windows please!

[zuegs]

Hi u3dreal

Very nice new features! I like the new "W/m^2" very much, great idea

I think we should use the "amulti" relation also for other light-types as <peak> and <rgb>. Also I like to reput the "7.5659e-16*pow(mat0.amb*10000, 4)" part in the <blackbody>-lights. This makes energie independent of "temperature".

Here what i suggest to change in "exportObject()":

Code: Select all

			emesh = Blender.Mesh.Get(meshname)
			faces = emesh.faces
			farea = 0.0
			amulti = 1.0
			for face in faces:
				farea += face.area 
			if farea > 0:
				amulti = 1/farea
			
			str += "\t\t<spectrum>\n"
			if (mat0.translucency > 0):
				str += "\t\t\t<peak>\n"
				str += "\t\t\t\t<peak_min>%.4g</peak_min>\n" %(mat0.translucency*1000)
				str += "\t\t\t\t<peak_width>%.4g</peak_width>\n" %(mat0.amb*1000)
				str += "\t\t\t\t<base_value>0</base_value>\n"
				str += "\t\t\t\t<peak_value>%.4g</peak_value>\n" %(mat0.emit*1e9*amulti)
				str += "\t\t\t</peak>\n"
			elif (mat0.translucency == 0 and mat0.amb > 0):
				str += "\t\t\t<blackbody>\n"
				str += "\t\t\t\t<temperature>%.0f</temperature>\n" %(mat0.amb*10000)
				str += "\t\t\t\t<gain>%.10f</gain>\n" %(mat0.emit*1000*amulti/(7.5659e-16*pow(mat0.amb*10000, 4)))
				str += "\t\t\t</blackbody>\n"   
			elif (mat0.translucency == 0 and mat0.amb == 0):
				str += "\t\t\t<rgb>\n"
				gain = mat0.emit*1e9*amulti
				str += "\t\t\t\t<rgb>%.3f %.3f %.3f</rgb>\n" %(mat0.R*gain, mat0.G*gain, mat0.B*gain)
				str += "\t\t\t</rgb>\n"

[zuegs]

I just checked the Stefan-Boltzmann Law again and found that I mixed up the formulas for thermal radiation "inside blackbody" and "on surface of a black body". So the factor for blackbody thermal compensation should be somthing like 5.6704E-8*pow(T,4)

[zuegs]

Hi u3dreal,

here my current suggestion for meshlights:

Code: Select all

			emesh = Blender.Mesh.Get(meshname)
			faces = emesh.faces
			farea = 0.0
			amulti = 1.0
			for face in faces:
				farea += face.area 
			if farea > 0:
				amulti = 1/farea
			amulti *= 1e9  # sky-light compensation (because sky-gain currently dont work)
			str += "\t\t<spectrum>\n"
			if (mat0.translucency > 0):
				str += "\t\t\t<peak>\n"
				str += "\t\t\t\t<peak_min>%.4g</peak_min>\n" %(mat0.translucency*1000)
				str += "\t\t\t\t<peak_width>%.4g</peak_width>\n" %(mat0.amb*1000)
				str += "\t\t\t\t<base_value>0</base_value>\n"
				str += "\t\t\t\t<peak_value>%.4g</peak_value>\n" %(mat0.emit*amulti)
				str += "\t\t\t</peak>\n"
			elif (mat0.translucency == 0 and mat0.amb > 0):
				str += "\t\t\t<blackbody>\n"
				str += "\t\t\t\t<temperature>%.0f</temperature>\n" %(mat0.amb*10000)
				str += "\t\t\t\t<gain>%.10f</gain>\n" %(mat0.emit*100*amulti/(5.6705e-8*pow(mat0.amb*10000, 4)))
				str += "\t\t\t</blackbody>\n"   
			elif (mat0.translucency == 0 and mat0.amb == 0):
				str += "\t\t\t<rgb>\n"
				gain = mat0.emit*amulti
				str += "\t\t\t\t<rgb>%.3f %.3f %.3f</rgb>\n" %(mat0.R*gain, mat0.G*gain, mat0.B*gain)
				str += "\t\t\t</rgb>\n"
			str += "\t\t</spectrum>\n"

[u3dreal]

Cool Zuegs !!!

i'll add that great finally someone to work with...

I didn't quite understnand and then i found out that
maxwell doesn't have such a compensation i thought i'll drop it..
but it is very nice btu is it physical correct as a 3000K light bulb
seems lower than a 6500K lanp .. or well it's still thecase.

RGB Color emittance is alos bery good..
How should we handle spectrum..gain.?

I was always on my own with the max exporter...
Now "we" can improve this baby even futher ...

One thing that seems also broken is the registry write .. nothing
gets written in the conf file so nothing gets saved..
i tested it with a small script and it worked without problems..
but somehow inside the exporter in won't work..

this would also be very important.

cheers

u3dreal

[u3dreal]

I also would suggest to use a *2 multiplier for the peak emission to better fit with blackbody and rgb..

cheers

u3dreal ;

[u3dreal]

Windows please!

click on "here it is " !!!!!!!!!!!!!!!!!

cheers

u3dreal

[Pinko]

very good work u3dreal I like that the indigo program start on button click but i dont understand where i can set the power of light emission...
excuse for my poor english
Pinko.

[zuegs]

but it is very nice btu is it physical correct as a 3000K light bulb
seems lower than a 6500K lanp .. or well it's still thecase.

Without blackbody compensation, a 3000K lamp is about 20 times darker that a 6500K lamp. With compensation, there are quite the same (3000K is still a bit less bright).

Note that RGB lamp use also "emit" value as multiplier... so you can set the light-color in "Col" and adapt the luminance with "emit".

For Peak-light you can add a multiplier... in documation there's noted that values in RGB-lights and peak-lights are of "W/m^2" unit so i thought that they should act equal

regards zuegs

[Phil]

Hi all,

u3dreal wrote:

Quote:

Thats a know problem .... maybe you can find a solution
the " won't help.. ;(

install blender to none " " space dir..

Putting something like this in the wrapper should help:

Code: Select all

'\"C:/Program Files/monExe.exe\"'

Sorry I can not test this today.

Regards, Phil

[jansan]

Thankssssssssssss u3dreal ........Excelente.......... your work

Finally I can do renders in Indigo from Blender Very many thanks

[u3dreal]

For Peak-light you can add a multiplier... in documation there's noted that values in RGB-lights and peak-lights are of "W/m^2" unit so i thought that they should act equal
regards zuegs

well you still have to check the global exposure for that ..
and there i use a value of 0.5 so with *2 it should be correct.

i calibrated the exposure with the sunny 16 rule..
So you should have 1/100s fstop16 iso100 and get a well exposed result..

cheers

u3dreal

[u3dreal]

so gamma dominates both texture and rgb ?
i often need different values for each one... (as with the previous exporter versions)
radiance

When do you need this ??? it'S no prob to add but the
only case i could imagine is when i have pre corrected tectures..

cheers

u3dreal

[u3dreal]

Okie

cheers

u3dreal