SPELL=opencsg
         VERSION=1.4.2
          SOURCE="OpenCSG-${VERSION}.tar.gz"
   SOURCE_URL[0]=http://www.${SPELL}.org/${SOURCE}
     SOURCE_HASH=sha512:fbe6f925982717ecca7bd0eacc4fc5b362c80c7663b1ff0d9a228f2b5e1d3625d3e6d324d9e634665c74e9c0fc37d10290ece293e59a3eba67035b6b700b7778
SOURCE_DIRECTORY="${BUILD_DIRECTORY}/OpenCSG-${VERSION}"
        WEB_SITE="http://www.opencsg.org"
      LICENSE[0]=GPL
         ENTERED=20190714
           SHORT="a library that does image-based CSG rendering using OpenGL"
cat << EOF
OpenCSG is a library that does image-based CSG rendering using OpenGL. CSG is
short for Constructive Solid Geometry and denotes an approach to model complex
3D-shapes using simpler ones. I.e., two shapes can be combined by taking the
union of them, by intersecting them, or by subtracting one shape of the other.
EOF