Synopsis

PDX_MSGT igeo_EvalCurveProps(long option, MDA_PTR db_ptr, double tval, IGEO_CURVE_PROPS *props)

Purpose

Evaluate properties of an IGES curve entity

Description

At a given parameter value between 0.0 and 1.0 inclusive, evaluate properties on the IGES curve entity. These properties include the 3D point location, tangent, and curvature at the specified parameter value.

Input

option

Option (not used)

db_ptr

The IGES curve entity database pointer

tval

The parameter value to evaluate (0.0 - 1.0)

Output

props

The curve properties at the evaluation parameter

Return

      IGEO_NOERR
      Low level error return
      .fi