Geometry importation: IGES / STEP standard format

IGES and STEP formats

The standard formats IGES / STEP enable the direct importation of geometry. These two formats enable the importation of complex faces (starting from version 9).

Warning: These formats are not available on the UNIX systems.

Conversion

The entities of initial file in IGES / STEP formats are read and converted into Flux entities as in table below.

Entities of initial file	are converted into …
points	points defined by parameterized coordinates
lines	lines of type: segment defined by extremity points arc defined by origin, intermediary and extremity points curve (for the unspecified lines)
faces	faces of type: automatically defined by plane, cylindrical or conical surfaces uneven type, defined by any kind of surfaces

Entities of initial file

are converted into …

points

points defined by parameterized coordinates

lines

lines of type:

segment defined by extremity points
arc defined by origin, intermediary and extremity points
curve (for the unspecified lines)

faces

faces of type:

automatically defined by plane, cylindrical or conical surfaces
uneven type, defined by any kind of surfaces

Options for conversion

The choice of the general options for conversion is not proposed to the user at the time of the importation. Flux imposes the default options (Coordinate system: IGES_i / STEP_i; length unit: the meter; precision: automatic).