# Synopsis

PDX_MSGT gdx_EvalCylinderPnt(long option, T_GDX_CYLINDER *gdx_cylinder, double uval, double vval, MTH_3DPNT point)

# Purpose

Evaluate a point on a GDX cylinder.

# Description

At a given (u,v) parameter value, evaluate a point on the GDX cylinder entity.

# Input

## option

### GDX_UNNORM

Unnormalize the parameter values

## gdx_cylinder

The GDX cylinder entity structure pointer

## uval

The surface u parameter value

## vval

The surface v parameter value

# Output

## point

The 3D point location

# Return

          GDX_NOERR
          GDX_PARMOUTOFRANGE
          Low level error return
          .fi