Synopsis

PDX_MSGT igeo_EvalSurfPnt(long option, MDA_PTR db_ptr, IMTH_MATRIX matrix, double uval, double vval, MTH_3DPNT point)

Purpose

Evaluate a point on an IGES surface entity

Description

At U and V parameter values between 0.0 and 1.0 inclusive, evaluate a point on the IGES surface entity.

Input

option

IGEO_FROMLEFT

Evaluate from the left

IGEO_FROMLOW

Evaluate from the low parameter direction

db_ptr

The IGES surface entity database pointer

matrix

The entity parent matrix to apply to the evaluated point

uval

The U parameter value to evaluate (0.0 - 1.0)

vval

The V parameter value to evaluate (0.0 - 1.0)

Output

point

The XYZ 3D evaluated point location

Return

      IGEO_NOERR
      IGEO_ENTITYNOTSURFACE
      Low level error return
      .fi