# Eval on curves and surfaces

Parameters

> pCrv: The input curve.

> pbIsPeriodic: The returned value.

Returns

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

Enumerations

- `A3DEAnalyticType`

Functions

- `A3DCrvGetInterval()`
- `A3DCrvEvaluate()`
- `A3DCrvEvaluatePointAndNormal()`
- `A3DCrvIsPeriodic()`
- `A3DSurfGetDomain()`
- `A3DSurfEvaluate()`
- `A3DSurfIsDegenerated()`
- `A3DSurfIsPeriodic()`
- `A3DSurfIsG1Continuous()`
- `A3DSimplifyCurveWithAnalytics()`
- `A3DSimplifyCurveWithAnalyticsFromCoEdge()`
- `A3DSimplifySurfaceWithAnalytics()`
- `A3DSurfEvaluateNormal()`
- `A3DCurveLength()`

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