Synopsis

PDX_MSGT gdx_GetParmSplCurveContinuity(long option, MDA_PTR db_ptr, double *cont_toler, int *continuity)

Purpose

Get the GDX Parametric Spline curve continuity.

Description

Determines the minimum continuity between all the segments in the GDX Parametric Spline curve entity to within the cont_toler tolerance. The continuity value can vary from -1 for discontinuous to a maximium of the degree of the parametric spline curve. The GDX parametric spline entity must be a valid GDX definition.

Input

option

GDX_GTEST

Test for G continuity for derivatives to 2

db_ptr

The GDX parametric spline curve entity database pointer.

cont_toler

The continuity tolerance. The distance between the derivatives must be less than or equal this value to have derivative continuity .nf [0] = Model Space Distance (G0) [1] = Radian angular difference (G1) [2] = Curvature difference (G2) [3] = Normalized derivative difference .fi

Output

continuity

The level of continuity (-1 to the curve degree).

Tolerances

NORMAL_MAG_TOL

Return

      GDX_NOERR
      GDX_NOMEMORY
      Low level error return
      .fi