Curve Segment Geometry


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  <SubTemplates>

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      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcCircle">

              <AttributeRules>

                <AttributeRule AttributeName="Radius">

                  <EntityRules>

                    <EntityRule EntityName="IfcPositiveLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

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    <ConceptTemplate uuid="fba4e3b1-2735-4c54-8d9e-88f5b4a4d90c" name="Bloss Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcThirdOrderPolynomialSpiral">

              <AttributeRules>

                <AttributeRule AttributeName="QubicTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="QuadraticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="bd1f5ac4-e795-4de7-b5aa-8551fe51086d" name="Clothoid Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcClothoid">

              <AttributeRules>

                <AttributeRule AttributeName="ClothoidConstant">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="f6b094a5-1e21-4e00-ad19-e01945296016" name="Cosine Spiral Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcCosineSpiral">

              <AttributeRules>

                <AttributeRule AttributeName="CosineTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="ConstantTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="27d2cc42-f560-4879-9c8e-3547bcadf796" name="Cubic Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcPolynomialCurve">

              <AttributeRules>

                <AttributeRule AttributeName="CoefficientsX">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="CoefficientsY">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="90c1a22a-f0a0-4cfe-a9d3-ee01a5743618" name="Helmert Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcSecondOrderPolynomialSpiral">

              <AttributeRules>

                <AttributeRule RuleID="QuadraticTerm" AttributeName="QuadraticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule RuleID="LinearTerm" AttributeName="LinearTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule RuleID="Constant" AttributeName="ConstantTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="a767cb6d-90b4-4397-8804-39cd3d5ed390" name="Linear Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcPolyline" />

            <EntityRule EntityName="IfcLine" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="cd1ee45e-f96e-464a-a324-478d74bb894b" name="Parabolic Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcPolynomialCurve">

              <AttributeRules>

                <AttributeRule AttributeName="CoefficientsX">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="CoefficientsY">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="a5c0cd3d-2fd4-40eb-b118-5d5e1795e711" name="Sine Spiral Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcSineSpiral">

              <AttributeRules>

                <AttributeRule AttributeName="SineTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="LinearTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

    <ConceptTemplate uuid="48d363f4-e6a7-4b02-9ddd-af9b44fb50ce" name="Viennese Bend Transition Segment" applicableSchema="IFC4" applicableEntity="IfcCurveSegment">

      <Rules>

        <AttributeRule AttributeName="ParentCurve">

          <EntityRules>

            <EntityRule EntityName="IfcSeventhOrderPolynomialSpiral">

              <AttributeRules>

                <AttributeRule AttributeName="ConstantTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcReal" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="QuadraticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="CubicTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="QuarticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="QuinticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="SexticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

                <AttributeRule AttributeName="SepticTerm">

                  <EntityRules>

                    <EntityRule EntityName="IfcLengthMeasure" />

                  </EntityRules>

                </AttributeRule>

              </AttributeRules>

            </EntityRule>

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentStart">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

        <AttributeRule AttributeName="SegmentLength">

          <EntityRules>

            <EntityRule EntityName="IfcParameterValue" />

          </EntityRules>

        </AttributeRule>

      </Rules>

    </ConceptTemplate>

  </SubTemplates>

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4.1.2.2 Curve Segment Geometry
