igl/external

This directory contains external libraries which are either difficult to obtain, difficult to compile or patched for libigl.

AntTweakBar

Patched to support copying and pasting from text fields (see http://www.alecjacobson.com/weblog/?p=2378)

Added makefiles for Mac OS X with modern GCC (AntTweakBar/src/Makefile.osx.igl) and for building with Mesa (AntTweakBar/src/Makefile.mesa.igl)

Embree

Install ispc for example (sudo port install ispc or brew install ispc), then

mkdir build
cd build
cmake -DCMAKE_C_COMPILER=/usr/bin/gcc -DCMAKE_CXX_COMPILER=/usr/bin/g++ -DCMAKE_BUILD_TYPE=Release ..
make

TinyXML2

double precision bug fixes:

tinyxml2.h line 1286 add function:

void SetAttribute( const char* name, float value ) { XMLAttribute* a = FindOrCreateAttribute( name ); a->SetAttribute( value ); }

tinyxml2.cpp line 434 replace with:

TIXML_SNPRINTF( buffer, bufferSize, "%.15e", v );