It's possible to convert Softimage curves into Hair geometry inside Cycles. Use special property to define the sampling mode. There are two modes: sample by distance and sample by count. In the first case new curve knot should be created every fixed step. In the second case we should subdivide the curve in fixed segments count and export only these knots.
In the same manner it's possible to convert surfaces into Mesh geometry. May be there is a method in Softimage API to triangulate the surface. Then the export is easy.
It's possible to convert Softimage curves into Hair geometry inside Cycles. Use special property to define the sampling mode. There are two modes: sample by distance and sample by count. In the first case new curve knot should be created every fixed step. In the second case we should subdivide the curve in fixed segments count and export only these knots.
In the same manner it's possible to convert surfaces into Mesh geometry. May be there is a method in Softimage API to triangulate the surface. Then the export is easy.