# Linear Curve

> 2.0

Entity type is `kA3DTypeCrvLine`.

The canonical form is defined with the help of `A3DMiscCartesianTransformationData`, its origin (parameter 0) being the origin of the line and its vector X being the direction of the line. `A3DParameterizationData`allows for reparameterization and trim.

## Example of a line segment

In the above illustration, the line is restricted to [ t0 , t1 ]interval on the X vector of its Cartesian transformation.

> Scale from `A3DMiscCartesianTransformationData`must be taken into account in previous evaluation’s algorithms.

> Y vector from `A3DMiscCartesianTransformationData`has no particular meaning in this case and must be ignored.

Returns

> `A3D_SUCCESS`on success, or an error code on failure

Structures

- `A3DCrvLineData`

Functions

- `A3DCrvLineGet()`
- `A3DCrvLineCreate()`

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