public static extern SU_RESULT SUEdgeUseGetEdge(SUEdgeUseRef edgeuse, ref SUEdgeRef edge);
public static extern SU_RESULT SUEdgeCreate(ref SUEdgeRef edge, ref SUPoint3D start, ref SUPoint3D end);
public static extern SU_RESULT SULoopIsEdgeReversed(SULoopRef loop, SUEdgeRef edge, ref bool reversed);
public static extern SUEntityRef SUEdgeToEntity(SUEdgeRef edge);
public static extern SUDrawingElementRef SUEdgeToDrawingElement(SUEdgeRef edge);
public static extern SU_RESULT SUEdgeGetLengthWithTransform(SUEdgeRef edge, ref SUTransformation transform, ref double length);
public static extern SU_RESULT SUEdgeSetColor(SUEdgeRef edge, ref SUColor color);
public static extern SU_RESULT SUEdgeGetNumFaces(SUEdgeRef edge, ref size_t count);
public static extern SU_RESULT SUEdgeGetFaces(SUEdgeRef edge, size_t len, SUFaceRef[] faces, ref size_t count);
public static extern SU_RESULT SUEdgeGetSmooth(SUEdgeRef edge, ref bool smooth_flag);
public static extern SU_RESULT SUEdgeGetSoft(SUEdgeRef edge, ref bool soft_flag);
public static extern SU_RESULT SUEdgeGetEndVertex(SUEdgeRef edge, ref SUVertexRef vertex);
public static extern SU_RESULT SUEdgeGetCurve(SUEdgeRef edge, ref SUCurveRef curve);
public static extern SU_RESULT SUEdgeRelease(ref SUEdgeRef edge);
