ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('B-SPLINE SURFACE TEST'),'2;1');
FILE_NAME('test_bspline.step','2026-08-21T00:00:00',('Python'),('Python'),'RCL STEP generator','RCL STEP generator','');
FILE_SCHEMA(('CONFIG_CONTROL_DESIGN'));
ENDSEC;
DATA;
#1=APPLICATION_CONTEXT('configuration controlled 3d designs of mechanical parts and assemblies');
#2=APPLICATION_PROTOCOL_DEFINITION('international standard','config_control_design',2010,#1);
#3=PRODUCT_CONTEXT('',#1,'mechanical');
#4=PRODUCT('TEST_BSPLINE','TEST_BSPLINE','',(#3));
#5=PRODUCT_DEFINITION_FORMATION('1','',#4);
#6=PRODUCT_DEFINITION_CONTEXT('part definition',#1,'design');
#7=PRODUCT_DEFINITION('design','',#5,#6);
#8=PRODUCT_DEFINITION_SHAPE('', '',#7);
#9=(LENGTH_UNIT()NAMED_UNIT(*)SI_UNIT(.MILLI.,.METRE.));
#10=(NAMED_UNIT(*)PLANE_ANGLE_UNIT()SI_UNIT($,.RADIAN.));
#11=(NAMED_UNIT(*)SI_UNIT($,.STERADIAN.)SOLID_ANGLE_UNIT());
#12=(GEOMETRIC_REPRESENTATION_CONTEXT(3)GLOBAL_UNIT_ASSIGNED_CONTEXT((#9,#10,#11))REPRESENTATION_CONTEXT('TEST','3D'));
#13=CARTESIAN_POINT('',(0,0,0));
#14=CARTESIAN_POINT('',(3.33333333333,0,0));
#15=CARTESIAN_POINT('',(6.66666666667,0,0));
#16=CARTESIAN_POINT('',(10,0,0));
#17=CARTESIAN_POINT('',(0,3.33333333333,0));
#18=CARTESIAN_POINT('',(3.33333333333,3.33333333333,5));
#19=CARTESIAN_POINT('',(6.66666666667,3.33333333333,5));
#20=CARTESIAN_POINT('',(10,3.33333333333,0));
#21=CARTESIAN_POINT('',(0,6.66666666667,0));
#22=CARTESIAN_POINT('',(3.33333333333,6.66666666667,5));
#23=CARTESIAN_POINT('',(6.66666666667,6.66666666667,5));
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#25=CARTESIAN_POINT('',(0,10,0));
#26=CARTESIAN_POINT('',(3.33333333333,10,0));
#27=CARTESIAN_POINT('',(6.66666666667,10,0));
#28=CARTESIAN_POINT('',(10,10,0));
#29=B_SPLINE_SURFACE_WITH_KNOTS('TEST_SURFACE',3,3,((#13,#14,#15,#16),(#17,#18,#19,#20),(#21,#22,#23,#24),(#25,#26,#27,#28)),.UNSPECIFIED.,.F.,.F.,.F.,(4,4),(4,4),(0.,1.),(0.,1.),.UNSPECIFIED.);
#30=B_SPLINE_CURVE_WITH_KNOTS('',3,(#13,#17,#21,#25),.UNSPECIFIED.,.F.,.F.,(4,4),(0.,1.),.UNSPECIFIED.);
#31=B_SPLINE_CURVE_WITH_KNOTS('',3,(#13,#14,#15,#16),.UNSPECIFIED.,.F.,.F.,(4,4),(0.,1.),.UNSPECIFIED.);
#32=B_SPLINE_CURVE_WITH_KNOTS('',3,(#16,#20,#24,#28),.UNSPECIFIED.,.F.,.F.,(4,4),(0.,1.),.UNSPECIFIED.);
#33=B_SPLINE_CURVE_WITH_KNOTS('',3,(#28,#27,#26,#25),.UNSPECIFIED.,.F.,.F.,(4,4),(0.,1.),.UNSPECIFIED.);
#34=VERTEX_POINT('',#13);
#35=VERTEX_POINT('',#16);
#36=VERTEX_POINT('',#28);
#37=VERTEX_POINT('',#25);
#38=EDGE_CURVE('',#34,#37,#30,.T.);
#39=EDGE_CURVE('',#37,#36,#33,.T.);
#40=EDGE_CURVE('',#36,#35,#32,.T.);
#41=EDGE_CURVE('',#35,#34,#31,.T.);
#42=ORIENTED_EDGE('',*,*,#38,.T.);
#43=ORIENTED_EDGE('',*,*,#39,.T.);
#44=ORIENTED_EDGE('',*,*,#40,.T.);
#45=ORIENTED_EDGE('',*,*,#41,.T.);
#46=EDGE_LOOP('',(#42,#43,#44,#45));
#47=FACE_OUTER_BOUND('',#46,.T.);
#48=ADVANCED_FACE(('',(#47),#29,.T.);
#49=OPEN_SHELL('',(#48));
#50=SHELL_BASED_SURFACE_MODEL('',(#49));
#51=MANIFOLD_SURFACE_SHAPE_REPRESENTATION('TEST_BSPLINE',(#50),#12);
#52=SHAPE_DEFINITION_REPRESENTATION(#8,#51);
ENDSEC;
END-ISO-10303-21;