exhaust_flange.enaml

from enaml.core.api import Looper
from declaracad.occ.api import (
    Part, Fillet, Cut, Cylinder, Box
)

enamldef Assembly(Part):
    name = "Exhaust Flange"
    # Example showing some parametric properties
    Cut:
        material = 'steel'
        attr padding = 4
        attr ports =  4
        Fillet:
            Box: flange:
                dx = 20
                dy = 100
                dz = 5
        
        # Bolt holes
        Looper:
            iterable << [
                         (padding,padding),
                         (padding,flange.dy-padding),
                         (flange.dx-padding,flange.dy-padding),
                         (flange.dx-padding,padding),
                        ]                       
            Cylinder: 
                position << (loop_item[0],loop_item[1],0)
                height := flange.dz
                radius = 1
                
        # Exhaust holes
        attr port_radius << (min(flange.dx,flange.dy)-padding)/2.0
        Looper:
            iterable << [
                    (flange.dx/2.0,i*flange.dy/(float(ports))+port_radius+padding)
                    for i in range(ports)
                ]
            Cylinder: 
                position << (loop_item[0],loop_item[1],0)
                height := flange.dz
                radius << port_radius