private static void Plane(Stack operandStack)
{
var operand = (string)operandStack.Pop();
//remove all spaces
operand.Replace(" ", "");
int splitPos = operand.IndexOf("],") + 1;
//plane equation is n[0]*x + n[1]*y + n[2]*z = d
double[] normal = ParseArray(operand.Substring(0, splitPos));
double d = Double.Parse(operand.Substring(splitPos + 1, operand.Length - splitPos - 1));
//find point on plane
double[] point = new double[] { 0, 0, 0 };
for (int i = 0; i < 3; ++i)
{
if (Math.Abs(normal[i]) > 0)
{
point[i] = d / normal[i];
break;
}
}
IfcPlane plane = IfcGeom.CreatePlane(point, normal);
operandStack.Push(plane);
}
public void CutByPlaneTest()
{
// === Cut IfcSweptAreaSolid
var operandStack = new Stack();
IfcPolyline outerCurve = IfcGeom.CreatePolyLine(new List <double[]>()
{
new double[] { 6, 0 },
new double[] { 6, 1 },
new double[] { 7, 1 },
new double[] { 7, 0 },
new double[] { 6, 0 }
});
IfcProfileDef profileDef = new IfcArbitraryClosedProfileDef(IfcProfileTypeEnum.AREA,
null,
outerCurve);
operandStack.Push(profileDef.Extrude(1));
operandStack.Push(IfcGeom.CreatePlane(new double[] { 6.5, 0.5, 0 },
new double[] { 1, 1, 0 }));
ConstructionOperations.ExecuteOperation(OperationName.CUT_BY_PLANE, operandStack);
Assert.Single(operandStack);
var response = operandStack.Pop();
Assert.IsAssignableFrom <IfcBooleanClippingResult>(response);
Assert.IsType <IfcExtrudedAreaSolid>(((IfcBooleanClippingResult)response).FirstOperand);
Assert.IsType <IfcPlane>(((IfcHalfSpaceSolid)((IfcBooleanClippingResult)response).SecondOperand).BaseSurface);
// === Cut IfcSweptAreaSolid
operandStack.Push(response);
operandStack.Push(IfcGeom.CreatePlane(new double[] { 6.5, 0.5, 0 },
new double[] { 1, 1, 0 }));
ConstructionOperations.ExecuteOperation(OperationName.CUT_BY_PLANE, operandStack);
Assert.Single(operandStack);
response = operandStack.Pop();
Assert.IsAssignableFrom <IfcBooleanClippingResult>(response);
Assert.IsType <IfcBooleanClippingResult>(((IfcBooleanClippingResult)response).FirstOperand);
Assert.IsType <IfcPlane>(((IfcHalfSpaceSolid)((IfcBooleanClippingResult)response).SecondOperand).BaseSurface);
}
public void BooleanOperatorTest()
{
//Set up project hierarchy
IfcProject project = IfcInit.CreateProject(null, null, null);
IfcSite site = IfcInit.CreateSite(null, null, null);
project.Aggregate(site, null);
IfcBuilding building = IfcInit.CreateBuilding(null, null, null, null);
site.Aggregate(building, null);
IfcBuildingStorey storey = IfcInit.CreateBuildingStorey(null, null, null, null);
building.Aggregate(storey, null);
//Create shape representation
IfcCsgPrimitive3D union_first = new IfcBlock(new IfcAxis2Placement3D(new IfcCartesianPoint(0, 0, 0), null, null),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1));
IfcCsgPrimitive3D union_second = new IfcBlock(new IfcAxis2Placement3D(new IfcCartesianPoint(0.5, 0.5, 0.5), null, null),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1));
IfcRepresentationItem unionRepresentation = union_first.Union(union_second);
IfcCsgPrimitive3D diff_first = new IfcBlock(new IfcAxis2Placement3D(new IfcCartesianPoint(2, 0, 0), null, null),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1));
IfcCsgPrimitive3D diff_second = new IfcBlock(new IfcAxis2Placement3D(new IfcCartesianPoint(2.5, 0.5, 0.5), null, null),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1));
IfcRepresentationItem diffRepresentation = diff_first.Difference(diff_second);
IfcCsgPrimitive3D inter_first = new IfcBlock(new IfcAxis2Placement3D(new IfcCartesianPoint(4, 0, 0), null, null),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1));
IfcCsgPrimitive3D inter_second = new IfcBlock(new IfcAxis2Placement3D(new IfcCartesianPoint(4.5, 0.5, 0.5), null, null),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1),
new IfcPositiveLengthMeasure(1));
IfcRepresentationItem interRepresentation = inter_first.Intersection(inter_second);
IfcPolyline outerCurve = IfcGeom.CreatePolyLine(new List <double[]>()
{
new double[] { 6, 0 },
new double[] { 6, 1 },
new double[] { 7, 1 },
new double[] { 7, 0 },
new double[] { 6, 0 }
});
IfcProfileDef profileDef = new IfcArbitraryClosedProfileDef(IfcProfileTypeEnum.AREA,
null,
outerCurve);
IfcSweptAreaSolid cut_reference = profileDef.Extrude(1);
IfcPlane plane = IfcGeom.CreatePlane(new double[] { 6.5, 0.5, 0 },
new double[] { 1, 1, 0 });
IfcRepresentationItem cutRepresentation = cut_reference.ClipByPlane(plane);
//Create product with representation and place in storey
var contextEnum = project.RepresentationContexts.GetEnumerator();
contextEnum.MoveNext();
IfcShapeRepresentation shapeRepresentation =
new IfcShapeRepresentation(contextEnum.Current,
new IfcLabel("union shape"),
new IfcLabel("BooleanResult"),
new IfcRepresentationItem[] { unionRepresentation, diffRepresentation, interRepresentation, cutRepresentation });
IfcProxy product = IfcInit.CreateProxy(null, null, null, storey.ObjectPlacement, null);
product.Representation = new IfcProductDefinitionShape(null, null, new IfcRepresentation[] { shapeRepresentation });
storey.Contains(product, null);
//Write to IFC file
using (FileStream fs = File.Create("./constructive_geom_test.ifc"))
{
project.SerializeToStep(fs, "IFC2X3", null);
}
}