4.4.1.1 Alignment Attributes

Alignments may be used to provide a layout reference for infrastructure elements.

mvdXML Specification
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        <AttributeRule AttributeName="Segments">
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            <EntityRule EntityName="IfcAlignmentCantSegment">
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                <AttributeRule AttributeName="EndTag" />
                <AttributeRule AttributeName="StartDistAlong">
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                    <EntityRule EntityName="IfcLengthMeasure" />
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                <AttributeRule AttributeName="HorizontalLength">
                  <EntityRules>
                    <EntityRule EntityName="IfcPositiveLengthMeasure" />
                  </EntityRules>
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                <AttributeRule AttributeName="StartCantLeft">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
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                <AttributeRule AttributeName="EndCantLeft">
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                    <EntityRule EntityName="IfcLengthMeasure" />
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                <AttributeRule AttributeName="StartCantRight">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="EndCantRight">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="SmoothingLength">
                  <EntityRules>
                    <EntityRule EntityName="IfcPositiveLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="PredefinedType">
                  <EntityRules>
                    <EntityRule EntityName="IfcAlignmentCantSegmentTypeEnum" />
                  </EntityRules>
                </AttributeRule>
              </AttributeRules>
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      <Rules>
        <AttributeRule AttributeName="Segments">
          <EntityRules>
            <EntityRule EntityName="IfcAlignmentHorizontalSegment">
              <AttributeRules>
                <AttributeRule AttributeName="StartTag" />
                <AttributeRule AttributeName="EndTag" />
                <AttributeRule AttributeName="StartPoint">
                  <EntityRules>
                    <EntityRule EntityName="IfcCartesianPoint" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="StartDirection">
                  <EntityRules>
                    <EntityRule EntityName="IfcPlaneAngleMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="StartRadiusOfCurvature">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="EndRadiusOfCurvature">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="SegmentLength">
                  <EntityRules>
                    <EntityRule EntityName="IfcPositiveLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="GravityCenterLineHeight" />
                <AttributeRule AttributeName="PredefinedType">
                  <EntityRules>
                    <EntityRule EntityName="IfcAlignmentHorizontalSegmentTypeEnum" />
                  </EntityRules>
                </AttributeRule>
              </AttributeRules>
            </EntityRule>
          </EntityRules>
        </AttributeRule>
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      <Rules>
        <AttributeRule AttributeName="Segments">
          <EntityRules>
            <EntityRule EntityName="IfcAlignmentVerticalSegment">
              <AttributeRules>
                <AttributeRule AttributeName="StartTag" />
                <AttributeRule AttributeName="EndTag" />
                <AttributeRule AttributeName="StartDistAlong">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="HorizontalLength">
                  <EntityRules>
                    <EntityRule EntityName="IfcPositiveLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="StartHeight">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="StartGradient">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="EndGradient">
                  <EntityRules>
                    <EntityRule EntityName="IfcLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="RadiusOfCurvature">
                  <EntityRules>
                    <EntityRule EntityName="IfcPositiveLengthMeasure" />
                  </EntityRules>
                </AttributeRule>
                <AttributeRule AttributeName="PredefinedType">
                  <EntityRules>
                    <EntityRule EntityName="IfcAlignmentVerticalSegmentTypeEnum" />
                  </EntityRules>
                </AttributeRule>
              </AttributeRules>
            </EntityRule>
          </EntityRules>
        </AttributeRule>
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