# Synopsis

PDX_MSGT gdx_FaceGenerateModelCurves(long option, MDA_PTR gdx_face_ptr, double devtol, long maxits, int fitdeg, int *status)

# Purpose

Generate missing Model Space curves in a face.

# Description

Generate missing model space curves for the face.

# Input

## option

Options (Not Used)

## gdx_face_ptr

The database pointer for the GDX face entity

## devtol

Sampled points on the model space curve, M(t), should not deviate from the surface or from the image under S(u,v) of P(s) more than this value. This tolerance should be larger than MODEL_SPACE_PNT_TOL, at least by 1 to 2 orders of magnitude.

## maxits

Maximum number of iterations. Iteration will be stopped if this number is exceeded.

## fitdeg

Degree used for fitting. See option GDX_FITDEGMAX above.

## status

Enumerated flag indicating whether the status of model curve generation : GDX_MODEL_UNKNOWN (-1) = Generation results unknown GDX_MODEL_GEN_FAILED (0) = Generation failed GDX_MODEL_EXISTED (1) = Model curves already existed GDX_MODEL_GEN_CURVE (2) = Generation succeeded GDX_MODEL_PARMOUTOFRANGE (3) = Parm curves out of range of surface

# Output

## gdx_face_ptr

An updated GDX face with parameter space curves

# Tolerances

          MODEL_SPACE_PNT_TOL
          PARM_SPACE_PNT_TOL
          ANGLE_TOL
          ZERO_TOL
          .fi

# Return

          GDX_NOERR
          GDX_INVALIDMODEL
          Low level error return
          .fi