# NAME

GDX_CURVE_MESH - Curve Mesh Surface

# GENERAL DESCRIPTION

The GDX Curve Mesh entity is a collection fo iso-parametric and/or boundary curves that are an indication of the approximation of a surface. The default entity for linear approximation of a GDX surface, GDX Curve Bounded Surface, or a GDX Face is a GDX Curve Mesh of GDX Polylines.

# DDF SPECIFICATION

    entity 30:0 GDX_CURVE_MESH "Curve Mesh Surface" {

    count
    NUM_SURF_CURVES;

    ptr
    CURVES[NUM_SURF_CURVES]
    reftype = (P_CURVES);

    ptr
    PARM_CURVES[NUM_SURF_CURVES]
    reftype = (P_CURVES);

    };

# FIELD DESCRIPTIONS

NUM_SURF_CURVES

The number of GDX curves comprising the GDX Curve Mesh.

CURVES

Array, dimensioned to [NUM_SURF_CURVES], containing the database pointers of the GDX curves corresponding to the model space curves that comprise the GDX Curve Mesh Entity. The allowable GDX entity type/forms consists of the parametrically defined GDX curve entities as defined by the P_CURVES ptrlist variable in gdx.ddf. For reference, these entities are:

GDX_CONIC
GDX_NURB_CURVE
GDX_ARC
GDX_SPLINE_CURVE
GDX_POLYLINE
GDX_COMP_CURVE
GDX_OFFSET_CURVE
GDX_TRIM_CURVE
PARM_CURVES

Array, dimensioned to [NUM_SURF_CURVES], containing the database pointers of the GDX curves corresponding to the parameter space curves that comprise the GDX Curve Mesh Entity. The allowable GDX entity type/forms consists of the parametrically defined GDX curve entities as defined by the P_CURVES ptrlist variable in gdx.ddf (see CURVES field above).

# RESTRICTIONS

None.