Cosplay/nhf/test.py

"""
Unit tests for tooling
"""
import unittest
import cadquery as Cq
from nhf.build import Model, target
import nhf.checks
import nhf.utils

# Color presets for testing purposes
color_parent = Cq.Color(0.7, 0.7, 0.5, 0.5)
color_child = Cq.Color(0.5, 0.7, 0.7, 0.5)

def makeSphere(r: float) -> Cq.Solid:
    """
    Makes a full sphere. The default function makes a hemisphere
    """
    return Cq.Solid.makeSphere(r, angleDegrees1=-90)

class BuildScaffold(Model):

    def __init__(self):
        super().__init__(name="scaffold")

    @target(name="obj1")
    def o1(self):
        return Cq.Solid.makeBox(10, 10, 10)

    def o2(self):
        return Cq.Solid.makeCylinder(10, 20)

class TestBuild(unittest.TestCase):

    def test_build_scaffold(self):
        s = BuildScaffold()
        names = ["obj1"]
        self.assertEqual(s.target_names, names)
        self.assertEqual(s.check_all(), len(names))

class TestChecks(unittest.TestCase):

    def intersect_test_case(self, offset):
        assembly = (
            Cq.Assembly()
            .add(Cq.Solid.makeBox(10, 10, 10),
                 name="c1",
                 loc=Cq.Location((0, 0, 0)))
            .add(Cq.Solid.makeBox(10, 10, 10),
                 name="c2",
                 loc=Cq.Location((0, 0, offset)))
        )
        coll = nhf.checks.pairwise_intersection(assembly)
        if -10 < offset and offset < 10:
            self.assertEqual(len(coll), 1)
        else:
            self.assertEqual(coll, [])

    def test_intersect(self):
        for offset in [9, 10, 11, -10]:
            with self.subTest(offset=offset):
                self.intersect_test_case(offset)

class TestUtils(unittest.TestCase):

    def test_tag_point(self):
        """
        A board with 3 holes of unequal sizes. Each hole is marked
        """
        p4x, p4y = 5, 5
        p3x, p3y = 0, 0
        p2x, p2y = -5, 0
        board = (
            Cq.Workplane('XY')
            .box(15, 15, 5)
            .faces("<Z")
            .workplane()
            .pushPoints([(p4x, p4y)])
            .hole(4, depth=2)
            .pushPoints([(p3x, p3y)])
            .hole(3, depth=1.5)
            .pushPoints([(p2x, p2y)])
            .hole(2, depth=1)
        )
        board.moveTo(p4x, p4y).tagPoint("h4")
        board.moveTo(p3x, p3y).tagPoint("h3")
        board.moveTo(p2x, p2y).tagPoint("h2")

        assembly = (
            Cq.Assembly()
            .add(board, name="board", color=color_parent)
            .add(makeSphere(2), name="s4", color=color_child)
            .add(makeSphere(1.5), name="s3", color=color_child)
            .add(makeSphere(1), name="s2", color=color_child)
            .constrain("board?h4", "s4", "Point")
            .constrain("board?h3", "s3", "Point")
            .constrain("board?h2", "s2", "Point")
            .solve()
        )
        self.assertEqual(nhf.checks.pairwise_intersection(assembly), [])
        bbox = assembly.toCompound().BoundingBox()
        self.assertAlmostEqual(bbox.xlen, 15)
        self.assertAlmostEqual(bbox.ylen, 15)
        self.assertAlmostEqual(bbox.zlen, 7)

    def test_tag_plane(self):
        p4x, p4y = 5, 5
        p3x, p3y = 0, 0
        p2x, p2y = -5, 0
        board = (
            Cq.Workplane('XY')
            .box(15, 15, 5)
            .faces("<Z")
            .workplane()
            .pushPoints([(p4x, p4y)])
            .hole(4, depth=2)
            .pushPoints([(p3x, p3y)])
            .hole(3, depth=1.5)
            .pushPoints([(p2x, p2y)])
            .hole(2, depth=1)
        )
        board.moveTo(p4x, p4y).tagPlane("h4")
        board.moveTo(p3x, p3y).tagPlane("h3")
        board.moveTo(p2x, p2y).tagPlane("h2")

        def markedCylOf(r):
            cyl = (
                Cq.Workplane('XY')
                .cylinder(radius=r, height=r)
            )
            cyl.faces("<Z").tag("mate")
            return cyl

        assembly = (
            Cq.Assembly()
            .add(board, name="board", color=color_parent)
            .add(markedCylOf(2), name="c4", color=color_child)
            .add(markedCylOf(1.5), name="c3", color=color_child)
            .add(markedCylOf(1), name="c2", color=color_child)
            .constrain("board?h4", "c4?mate", "Plane", param=0)
            .constrain("board?h3", "c3?mate", "Plane", param=0)
            .constrain("board?h2", "c2?mate", "Plane", param=0)
            .solve()
        )
        self.assertEqual(nhf.checks.pairwise_intersection(assembly), [])
        bbox = assembly.toCompound().BoundingBox()
        self.assertAlmostEqual(bbox.xlen, 15)
        self.assertAlmostEqual(bbox.ylen, 15)
        self.assertAlmostEqual(bbox.zlen, 5)

if __name__ == '__main__':
    unittest.main()