andrsd / figura Goto Github PK

To simplify exporting into multiple file, create a simple export function, so people can do:

export(<output_file_name>, [shape1, shape2, ...], format="step")

So people can do things like:

z_axis = Geometry.DZ()
Axis2(Point(0, 0, lower_clipping_z), -z_axis)

Wrap BRepAlgoAPI_Common functionality

References

• BRepAlgoAPI_Common

• allow to store shape names in STEP files
• for STL export, use the shape name for file names, so get one file per shape like this:
  • file base - shape name.stl
  • if shape name is empty, we could use some index - file base - 0.stl (or we can name shapes automatically?)

References:

• adding names to STEP/IGES files

Create a class for doing circular pattern

User would specify:

• origin
• start angle, end angle
• number of instances
• radius
• shape to pattern

People would do:

shape = ...
shape.color = [r, g, b]

step.save([shape])

and got a file with the color of shape

Command line switch --version and -v should report package version.

• allow to specify units of the model
• allow to specify units for the output file (STEP only)

Create an object for exporting to STEP.

Basically wrapping this code snippet

import OCC.Core.STEPControl as step

step_writer = step.STEPControl_Writer()
step_writer.Transfer(shp.shape(), step.STEPControl_AsIs)
step_writer.Write(file_name)

Wrap BRepAlgoAPI_Cut functionality

References

• BRepAlgoAPI_Cut

Create object for STL export

Basically wrapping this code snippet:

from OCC.Core.StlAPI import StlAPI_Writer
from OCC.Core.BRepMesh import BRepMesh_IncrementalMesh

# meshing params
linear_deflection = 0.9
angular_deflection = 0.1

writer = StlAPI_Writer()
writer.SetASCIIMode(not binary)
for idx, shp in enumerate(shapes):
    mesh = BRepMesh_IncrementalMesh(shp.shape(), linear_deflection, False, angular_deflection, True)
    mesh.Perform()
    if not mesh.IsDone():
        raise AssertionError("Mesh is not done.")
    fn = "{}.{}.stl".format(file_name, idx)
    success = writer.Write(shp.shape(), fn)

Create a class for doing linear patterns.

User would specify:

• origin
• dx, dy
• number of instances in x- and y-direction
• shape to pattern