kimuraryo / libbsdf Goto Github PK

Library for BSDF, BRDF, and BTDF

License: Mozilla Public License 2.0

CMake 1.16% C++ 98.84%

libbsdf's Introduction

libbsdf

Overview

libbsdf is a C++ library for BSDF, BRDF, and BTDF. libbsdf provides basic functions: file IO, interpolation, data structure and so on. Eigen 3 is used for arrays, vectors, and matrices. libbsdf is licensed under the terms of the Mozilla Public License, version 2.0. See the LICENSE file.

Building libbsdf

C++ compiler that supports C++17 is required. CMake is used as the build system. The search path for Eigen 3 is set through CMake variables: Eigen3_DIR. To enable the fitting function to reflectance models, enable LIBBSDF_ENABLE_FITTING and set the Ceres Solver path to the Ceres_DIR variable.

Data structure

Scatter and specular data
- BRDF
- BTDF
- Specular reflectance
- Specular transmittance
Color
- Monochrome
- RGB
- XYZ
- Spectrum
Parameterization
- Spherical coordinate system
- Specular coordinate system
- Half-difference coordinate system

File reader

Format	Extension	Measured Data
Surface Scattering Distribution Data	.ssdd
Integra Diffuse Distribution	.ddr, .ddt
Integra Specular Distribution	.sdr, .sdt
Zemax BSDF	.bsdf	RPC Photonics
LightTools BSDF	.bsdf
ASTM E1392-96(2002)	.astm	Cornell University
MERL BRDF	.binary	MERL

File writer

Format	Extension
Surface Scattering Distribution Data	.ssdd
Integra Diffuse Distribution	.ddr, .ddt

libbsdf's People

Contributors

Stargazers

Watchers

Forkers

mkae corefan hzqeric visnyin kkkzxh gaolijungit mu-l graphicsenthusiast

libbsdf's Issues

DdrWriter.cpp - wrong keywords for RGB at line 101 and 104 ?

hi,
we are using Inspirer and your wonderfull Viewer which let us convert many measurements.
There is only one problem if we output to *.ddr and use it in Inspirer.
it gives us an error about a wrong keyword.
We then replace in the ddr file the reywords "gre" to "green" and "blu" to "blue" ..and then everything is working.

i'm new to github and don't want to make something wrong, so you may want to verify this bug(?) and may fix it.

release tagging

Can you add release tags to your repo?!

So future ports or packages could easily learn from the repo which releases exist and thus allow for semi-automatic release version checks.

Windows7 & M$ VC++ 2013 & Qt Creator : Build success, but with tons of warnings...

I have ran CMake in Qt Creator with the NMake generator (for 64 bit MSVC2013) and the argument -DEIGEN3_INCLUDE_DIR=P:/freeformOPT/extlibs/include/Eigen which allowed me to build the library successfully. :-)

So far so good, but the compile output had many complaints:

18:44:25: Running steps for project libbsdf...
18:44:25: Starting: "C:\Qt\Tools\QtCreator\bin\jom.exe" 

jom 1.0.14 - empower your cores

Scanning dependencies of target libbsdf
[  3%] [  6%] [  9%] [ 12%] [ 16%] [ 19%] [ 22%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/Brdf.cpp.obj
[ 25%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/Btdf.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/Bsdf.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/CatmullRomSplineInterpolator.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/HalfDifferenceCoordinatesBrdf.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/Integrator.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/LinearInterpolator.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/Material.cpp.obj
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
Brdf.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
Btdf.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
Bsdf.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 29%] [ 32%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/Processor.cpp.obj
Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/RandomSampleSet.cpp.obj
CatmullRomSplineInterpolator.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
HalfDifferenceCoordinatesBrdf.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
Integrator.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
LinearInterpolator.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
Material.cpp
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
Processor.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
RandomSampleSet.cpp
[ 35%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/SampleSet.cpp.obj
SampleSet.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 38%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/SampleSet2D.cpp.obj
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
SampleSet2D.cpp
[ 41%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/SpecularCoordinatesBrdf.cpp.obj
SpecularCoordinatesBrdf.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 45%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/SphericalCoordinatesBrdf.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(157) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(153) : while compiling class template member function 'lb::CoordinatesBrdf<lb::HalfDifferenceCoordinateSystem>::CoordinatesBrdf(const lb::Brdf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &)'
        P:\libbsdf\src\Brdf\HalfDifferenceCoordinatesBrdf.cpp(37) : see reference to function template instantiation 'lb::CoordinatesBrdf<lb::HalfDifferenceCoordinateSystem>::CoordinatesBrdf(const lb::Brdf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &)' being compiled
        P:\libbsdf\include\libbsdf/Brdf/HalfDifferenceCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::HalfDifferenceCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::HalfDifferenceCoordinateSystem>::expandAngles(void)'
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
SphericalCoordinatesBrdf.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 48%] Building CXX object CMakeFiles/libbsdf.dir/src/Brdf/TwoSidedMaterial.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SphericalCoordinatesBrdf.h(24) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>' being compiled
TwoSidedMaterial.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 51%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/CentripetalCatmullRomSpline.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
CentripetalCatmullRomSpline.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
P:\libbsdf\src\Brdf\Processor.cpp(108) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
[ 54%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/CieData.cpp.obj
CieData.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 58%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/HalfDifferenceCoordinateSystem.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(157) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(153) : while compiling class template member function 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::CoordinatesBrdf(const lb::Brdf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &)'
        P:\libbsdf\src\Brdf\SpecularCoordinatesBrdf.cpp(37) : see reference to function template instantiation 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::CoordinatesBrdf(const lb::Brdf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &)' being compiled
        P:\libbsdf\include\libbsdf/Brdf/SpecularCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::expandAngles(void)'
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(157) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(153) : while compiling class template member function 'lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>::CoordinatesBrdf(const lb::Brdf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &)'
        P:\libbsdf\src\Brdf\SphericalCoordinatesBrdf.cpp(37) : see reference to function template instantiation 'lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>::CoordinatesBrdf(const lb::Brdf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &,const lb::Arrayf &)' being compiled
        P:\libbsdf\include\libbsdf/Brdf/SphericalCoordinatesBrdf.h(24) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>::expandAngles(void)'
HalfDifferenceCoordinateSystem.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 61%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/SpectrumUtility.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SpecularCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
SpectrumUtility.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 64%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/SpecularCoordinateSystem.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
SpecularCoordinateSystem.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 67%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/SphericalCoordinateSystem.cpp.obj
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
SphericalCoordinateSystem.cpp
[ 70%] Building CXX object CMakeFiles/libbsdf.dir/src/Common/Version.cpp.obj
Version.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 74%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/AstmReader.cpp.obj
AstmReader.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 77%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/DdrReader.cpp.obj
DdrReader.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 80%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/LightToolsBsdfReader.cpp.obj
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
LightToolsBsdfReader.cpp
[ 83%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/MerlBinaryReader.cpp.obj
MerlBinaryReader.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 87%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/ReaderUtility.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
ReaderUtility.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 90%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/SdrReader.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
SdrReader.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 93%] Building CXX object CMakeFiles/libbsdf.dir/src/Reader/ZemaxBsdfReader.cpp.obj
ZemaxBsdfReader.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[ 96%] Building CXX object CMakeFiles/libbsdf.dir/src/Writer/DdrWriter.cpp.obj
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\src\Reader\AstmReader.cpp(218) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\AstmReader.cpp(219) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\AstmReader.cpp(220) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\AstmReader.cpp(221) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\AstmReader.cpp(224) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\src\Reader\ReaderUtility.cpp(21) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\src\Reader\DdrReader.cpp(187) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\DdrReader.cpp(189) : warning C4267: '=' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\DdrReader.cpp(196) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SphericalCoordinatesBrdf.h(24) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>' being compiled
DdrWriter.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
[100%] Building CXX object CMakeFiles/libbsdf.dir/src/Writer/SdrWriter.cpp.obj
P:\libbsdf\src\Reader\LightToolsBsdfReader.cpp(110) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\LightToolsBsdfReader.cpp(296) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SpecularCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SphericalCoordinatesBrdf.h(24) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SphericalCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::HalfDifferenceCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/HalfDifferenceCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::HalfDifferenceCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\src\Reader\SdrReader.cpp(93) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\src\Reader\ZemaxBsdfReader.cpp(156) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\ZemaxBsdfReader.cpp(158) : warning C4267: '=' : conversion from 'size_t' to 'int', possible loss of data
P:\libbsdf\src\Reader\ZemaxBsdfReader.cpp(164) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data
SdrWriter.cpp
cl : Command line warning D9002 : ignoring unknown option '/arch:SSE2'
P:\libbsdf\include\libbsdf/Brdf/SampleSet.h(285) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SpecularCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>' being compiled
P:\libbsdf\include\libbsdf/Brdf/SampleSet2D.h(235) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data
P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(303) : warning C4244: 'argument' : conversion from '__int64' to 'int', possible loss of data
        P:\libbsdf\include\libbsdf/Brdf/CoordinatesBrdf.h(268) : while compiling class template member function 'bool lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>::expandAngles(void)'
        P:\libbsdf\include\libbsdf/Brdf/SpecularCoordinatesBrdf.h(25) : see reference to class template instantiation 'lb::CoordinatesBrdf<lb::SpecularCoordinateSystem>' being compiled
Linking CXX static library libbsdf.lib
[100%] Built target libbsdf
18:44:40: The process "C:\Qt\Tools\QtCreator\bin\jom.exe" exited normally.
18:44:40: Elapsed time: 00:12.

What do you suggest?

Radiance file format support

Perhaps supporting Radiance' XML format would be of interest for people?

Unit tests

It would be great to have unit tests for this library, in order to verify loading, saving as well as operations on the stored data, including debug timestamps in order to be able to locate possible bottlenecks.

Problems building the lib

Hi!

I am trying to build this lib and run into trouble with making CMake find everything.

eigen3 is installed:

$ cmake --find-package -DNAME=eigen3 -DCOMPILER_ID=CLANG -DLANGUAGE=CXX -DMODE=EXIST -DCMAKE_MODULE_PATH=/opt/local/share/cmake/Modules ..
eigen3 found.

but the above command doesn't create a makefile in the respective build folder.

If I run it without the --find-package option cmake fails to find the lib:

$ cmake ..
-- The C compiler identification is AppleClang 7.0.2.7000181
-- The CXX compiler identification is AppleClang 7.0.2.7000181
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:32 (find_package):
  By not providing "FindEigen3.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Eigen3", but
  CMake did not find one.

  Could not find a package configuration file provided by "Eigen3" with any
  of the following names:

    Eigen3Config.cmake
    eigen3-config.cmake

  Add the installation prefix of "Eigen3" to CMAKE_PREFIX_PATH or set
  "Eigen3_DIR" to a directory containing one of the above files.  If "Eigen3"
  provides a separate development package or SDK, be sure it has been
  installed.


-- Configuring incomplete, errors occurred!
See also "/Users/marko/WC/GIT/libbsdf/build/CMakeFiles/CMakeOutput.log".

Any hints?

I've tried this on a late-2009 iMac with OSX 10.10 and MacPorts for installing eigen3.

pab BME BSDF data format

I just found Mr Apian-Bennewitz' BRDF gallery. That's a nice demo for very different materials.

Perhaps interesting to be able to read these freely available BSDF data files?!

Define publicly available BSDF data file(s) for testing

As mentioned in a BSDFProcessor issue it would be good to have (a) publicly available BSDF data file(s) defined which would be usable for libbsdf's (unit) testing.

Windows7 & MSYS2 & mingw & Qt Creator: Building fails

I have - alternatively - installed MSYS2 in order to build libbsdf using a mingw toolchain using the MinGW generator (MinGW-w64_64bit (MSYS2)) with this argument -DEIGEN3_INCLUDE_DIR=/mingw64/include/eigen3/unsupported/ and unfortunately end up with this error:

CMake Error: Could not create named generator CodeBlocks - MinGW Makefiles

Any hints for me, Kimura?

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