Sign in
2026 Class Back to 2026
C

Curve

Version comparison
2020 2021 2022 2023 2024 2025 2025.3 2026 2027

Members across versions

30 members across 9 versions · 2 added later · 2 removed · 8 changed · 2 obsolete

Member-name color: stable · changed · removed · obsolete · added later

Member 2020 2021 2022 2023 2024 2025 2025.3 2026 2027
M Clone
same same same same same same same same same
M ComputeClosestPoints(Curve, Boolean, Boolean, Boolean, IList<ClosestPointsPairBetweenTwoCurves>)
same same same same same same same same same
M ComputeDerivatives(Double, Boolean)
same same same same same same same same same
M ComputeNormalizedParameter(Double)
same same same same same same same same same
M ComputeRawParameter(Double)
same same same same same same same same same
M CreateOffset(Double, XYZ)
same same same same same changed same same same
M CreateReversed
same same same same same changed same same same
M CreateTransformed(Transform)
same same same same same changed same same same
M Distance(XYZ)
same same same same same same same same same
M Evaluate(Double, Boolean)
same same same same same same same same same
M GetEndParameter(Int32)
same same same same same changed same same same
M GetEndPoint(Int32)
same same same same same changed same same same
M GetEndPointReference(Int32)
same same same same same changed same same same
M Intersect(Curve, IntersectionResultArray%)
same same same same same same same changed missing
M Intersect(Curve)
same same same same same same same changed missing
M Intersect(Curve, CurveIntersectResultOption)
not yet introduced not yet introduced not yet introduced not yet introduced not yet introduced not yet introduced not yet introduced added same
M IsInside(Double)
same same same same same same same same same
M IsInside(Double, Int32%)
same same same same same same same same same
M MakeBound(Double, Double)
same same same same same same same same same
M MakeUnbound
same same same same same same same same same
M Project(XYZ)
same same same same same same same same same
M SetGraphicsStyleId(ElementId)
same same same same same same same same same
M Tessellate
same same same same same same same same same
P ApproximateLength
same same same same same same same same same
P IsBound
same same same same same same same same same
P IsClosed
not yet introduced added same same same same same same same
P IsCyclic
same same same same same same same same same
P Length
same same same same same same same same same
P Period
same same same same same same same same same
P Reference
same same same same same same same same same

Per-version detail

Click a version below to see what changed in that release vs your current frame (2026).
2026 current

Changes in 2020 vs 2026 2 missing 8 changed

Flip API Versions →

Missing in 2020 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption) IsClosed

Changed members

Curve.CreateOffset(Double, XYZ)
offsetDist Double The signed distance that controls the offset.
referenceVector XYZ A reference vector to define the offset direction.
→ returns Curve The new curve.
Curve.CreateReversed()
→ returns Curve The new curve.
Curve.CreateTransformed(Transform)
transform Transform The transform to apply.
→ returns Curve The new curve.
Curve.GetEndParameter(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns Double The parameter.
Curve.GetEndPoint(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns XYZ The curve endpoint.
Curve.GetEndPointReference(Int32)
index Int32 Use 0 for the start point; 1 for the end point.
→ returns nullNothingnullptr→Reference Reference to the point or if reference cannot be obtained.
Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.

Changes in 2021 vs 2026 1 missing 8 changed

Flip API Versions →

Missing in 2021 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption)

Changed members

Curve.CreateOffset(Double, XYZ)
offsetDist Double The signed distance that controls the offset.
referenceVector XYZ A reference vector to define the offset direction.
→ returns Curve The new curve.
Curve.CreateReversed()
→ returns Curve The new curve.
Curve.CreateTransformed(Transform)
transform Transform The transform to apply.
→ returns Curve The new curve.
Curve.GetEndParameter(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns Double The parameter.
Curve.GetEndPoint(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns XYZ The curve endpoint.
Curve.GetEndPointReference(Int32)
index Int32 Use 0 for the start point; 1 for the end point.
→ returns nullNothingnullptr→Reference Reference to the point or if reference cannot be obtained.
Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.

Changes in 2022 vs 2026 1 missing 8 changed

Flip API Versions →

Missing in 2022 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption)

Changed members

Curve.CreateOffset(Double, XYZ)
offsetDist Double The signed distance that controls the offset.
referenceVector XYZ A reference vector to define the offset direction.
→ returns Curve The new curve.
Curve.CreateReversed()
→ returns Curve The new curve.
Curve.CreateTransformed(Transform)
transform Transform The transform to apply.
→ returns Curve The new curve.
Curve.GetEndParameter(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns Double The parameter.
Curve.GetEndPoint(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns XYZ The curve endpoint.
Curve.GetEndPointReference(Int32)
index Int32 Use 0 for the start point; 1 for the end point.
→ returns nullNothingnullptr→Reference Reference to the point or if reference cannot be obtained.
Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.

Changes in 2023 vs 2026 1 missing 8 changed

Flip API Versions →

Missing in 2023 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption)

Changed members

Curve.CreateOffset(Double, XYZ)
offsetDist Double The signed distance that controls the offset.
referenceVector XYZ A reference vector to define the offset direction.
→ returns Curve The new curve.
Curve.CreateReversed()
→ returns Curve The new curve.
Curve.CreateTransformed(Transform)
transform Transform The transform to apply.
→ returns Curve The new curve.
Curve.GetEndParameter(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns Double The parameter.
Curve.GetEndPoint(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns XYZ The curve endpoint.
Curve.GetEndPointReference(Int32)
index Int32 Use 0 for the start point; 1 for the end point.
→ returns nullNothingnullptr→Reference Reference to the point or if reference cannot be obtained.
Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.

Changes in 2024 vs 2026 1 missing 8 changed

Flip API Versions →

Missing in 2024 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption)

Changed members

Curve.CreateOffset(Double, XYZ)
offsetDist Double The signed distance that controls the offset.
referenceVector XYZ A reference vector to define the offset direction.
→ returns Curve The new curve.
Curve.CreateReversed()
→ returns Curve The new curve.
Curve.CreateTransformed(Transform)
transform Transform The transform to apply.
→ returns Curve The new curve.
Curve.GetEndParameter(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns Double The parameter.
Curve.GetEndPoint(Int32)
index Int32 0 for the start or 1 for end of the curve.
→ returns XYZ The curve endpoint.
Curve.GetEndPointReference(Int32)
index Int32 Use 0 for the start point; 1 for the end point.
→ returns nullNothingnullptr→Reference Reference to the point or if reference cannot be obtained.
Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.

Changes in 2025 vs 2026 1 missing 2 changed

Flip API Versions →

Missing in 2025 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption)

Changed members

Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.

Changes in 2025.3 vs 2026 1 missing 2 changed

Flip API Versions →

Missing in 2025.3 (only available in 2026)

Intersect(Curve, CurveIntersectResultOption)

Changed members

Curve.Intersect(Curve, IntersectionResultArray%)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Detailed. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
resultArray IntersectionResultArray% Provides more information about the intersection.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. The output argument has the details. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. If the former, the output argument has the details of the intersection point. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.
Curve.Intersect(Curve)
Became obsolete in 2026: This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Use the new Curve.Intersect method with CurveIntersectResultOption.Simple. Note also that the updated method has improved handling of certain edge cases.
curve Curve The specified curve to intersect with this curve.
→ returns SetComparisonResult SetComparisonResult.Overlap - One or more intersections were encountered. SetComparisonResult.Subset - The inputs are parallel lines with only one common intersection point, or the curve used to invoke the intersection check is a line entirely within the unbound line passed as argument curve. SetComparisonResult.Superset - The input curve is entirely within the unbound line used to invoke the intersection check. SetComparisonResult.Disjoint - There is no intersection found between the two curves. SetComparisonResult.Equal - The two curves are identical.