ifcopenshell.api.grid.create_axis_curve

Module Contents

ifcopenshell.api.grid.create_axis_curve.create_axis_curve(file: ifcopenshell.file, *, p1: ifcopenshell.util.shape_builder.VectorType, p2: ifcopenshell.util.shape_builder.VectorType, grid_axis: ifcopenshell.entity_instance, is_si: bool = True) → None

Adds curve geometry to a grid axis to represent the axis extents

An IFC grid will have a minimum of two axes (typically perpendicular). Each axis will then have a line which represents the extents of the axis.

Parameters:

• p1 – The first point of the grid axis

• p2 – The second point of the grid axis

• grid_axis – The IfcGridAxis element to add geometry to.

• is_si – If true, the points are in meters, not project units

Example:

# A pretty standard rectangular grid, with only two axes.
grid = ifcopenshell.api.root.create_entity(model, ifc_class="IfcGrid")
axis_a = ifcopenshell.api.grid.create_grid_axis(model,
    axis_tag="A", uvw_axes="UAxes", grid=grid)
axis_1 = ifcopenshell.api.grid.create_grid_axis(model,
    axis_tag="1", uvw_axes="VAxes", grid=grid)

# By convention, alphabetic grids are horizontal, and numeric are vertical
ifcopenshell.api.grid.create_axis_curve(
    model, p1=np.array((0., 0., 0.)), p2=np.array((10., 0., 0.)), grid_axis=axis_a)
ifcopenshell.api.grid.create_axis_curve(
    model, p1=np.array((0., 0., 0.)), p2=np.array((0., 10., 0.)), grid_axis=axis_1)