Synopsis

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

Purpose

Get the IGES curve continuity.

Description

Determines the minimum continuity between all the segments in the IGES curve entity to within the cont_toler tolerance. For an IGES curve entity that has only one segment, the type of curve determines the level of continuity. The continuity value can vary from -1 for discontinuous to a maximium of GDX_MAX_DEG where GDX_MAX_DEG is the maximium degree supported for an IGES NURBS curve. The IGES curve must be a valid IGES definition.

Input

option

IGEO_GTEST

Test for G continuity for derivatives to 2

db_ptr

The IGES curve entity database pointer.

cont_toler

The continuity tolerance. The distance between the derivatives must be less then 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 GDX_MAX_DEG).

Return

      IGEO_NOERR
      Low level error return
      .fi