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test_constraint_init.py
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import math
from unittest import skip
from testing.utils import Sketch2dTestCase
class TestConstraintAdd(Sketch2dTestCase):
def test_horizontal(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
# Test constraint between two points
p1 = entities.add_point_2d((3, 1), sketch)
c1 = constraints.add_horizontal(p0, entity2=p1, sketch=sketch)
self.solve()
self.assertAlmostEqual(p1.co.y, 0.0)
# Test constraint with one line
p2 = entities.add_point_2d((-3, -1), sketch)
line = entities.add_line_2d(p0, p2, sketch)
c2 = constraints.add_horizontal(line, sketch=sketch)
self.solve()
self.assertAlmostEqual(p2.co.y, 0.0)
def test_vertical(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch, fixed=True, index_reference=True)
# Test constraint between two points
p1 = entities.add_point_2d((3, 1), sketch, index_reference=True)
c1 = constraints.add_vertical(p0, entity2=p1, sketch=sketch)
self.solve()
self.assertAlmostEqual(c1.entity2.co.x, 0.0)
# Test constraint with one line
p2 = entities.add_point_2d((-3, -1), sketch, index_reference=True)
line = entities.add_line_2d(p0, p2, sketch, index_reference=True)
c2 = constraints.add_vertical(line, sketch=sketch)
self.solve()
self.assertAlmostEqual(c2.entity1.p2.co.x, 0.0)
class TestConstraintInit(Sketch2dTestCase):
def test_distance(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
# Constrain single Line
p1 = entities.add_point_2d((-2, 0), sketch)
line = entities.add_line_2d(p0, p1, sketch)
c1 = constraints.add_distance(line, None, sketch=sketch, init=True)
self.solve()
self.assertAlmostEqual(line.length, 2.0)
self.assertAlmostEqual(c1.value, 2.0)
# Constrain 2 points
p2 = entities.add_point_2d((0.0, 2.0), sketch)
c2 = constraints.add_distance(p0, p2, sketch=sketch, init=True)
self.solve()
self.assertAlmostEqual(p2.co.y, 2.0)
self.assertAlmostEqual(c2.value, 2.0)
# Constrain line-point
# c3 = constraints.add_distance(p2, line, sketch=sketch, init=True)
# self.solve()
# self.assertAlmostEqual(c3.value, 2.0)
def test_distance_flip(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
# Line
p1 = entities.add_point_2d((1, -1), sketch)
p1.fixed = True
p2 = entities.add_point_2d((1, 1), sketch)
line = entities.add_line_2d(p1, p2, sketch)
c1 = constraints.add_distance(p0, line, sketch=sketch, init=True)
self.solve()
self.assertTrue(c1.flip)
self.assertAlmostEqual(p2.co.x, 1.0)
# Flip distance
c1.flip = False
self.assertAlmostEqual(p2.co.y, -1.0)
# Line2 (Opposite direction)
p3 = entities.add_point_2d((-1, -1), sketch)
p3.fixed = True
p4 = entities.add_point_2d((-1, 1), sketch)
line2 = entities.add_line_2d(p3, p4, sketch)
c2 = constraints.add_distance(p0, line2, sketch=sketch, init=True)
self.solve()
self.assertFalse(c2.flip)
self.assertAlmostEqual(p4.co.x, -1.0)
# Flip distance2
c2.flip = True
self.assertAlmostEqual(p4.co.y, -1.0)
def test_distance_aligned(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
p1 = entities.add_point_2d((1, 2), sketch)
c1 = constraints.add_distance(
p0, p1, sketch=sketch, init=True, align="VERTICAL"
)
c2 = constraints.add_distance(
p0, p1, sketch=sketch, init=True, align="HORIZONTAL"
)
self.solve()
self.assertAlmostEqual(c1.value, 2.0)
self.assertAlmostEqual(c2.value, 1.0)
# Change alignment
length = (p1.co - p0.co).length
c1.align = "NONE"
self.assertAlmostEqual(c1.value, length)
def test_diameter(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
nm = sketch.wp.nm
# Constrain circle diameter
circle1 = entities.add_circle(nm, p0, 3.0, sketch)
c1 = constraints.add_diameter(circle1, sketch=sketch, init=True, value=4.0)
self.solve()
self.assertAlmostEqual(circle1.radius, 2.0)
self.assertAlmostEqual(c1.value, 4.0)
# Constrain circle radius
circle2 = entities.add_circle(nm, p0, 3.0, sketch)
c2 = constraints.add_diameter(circle2, sketch=sketch, init=True, setting=True)
self.solve()
self.assertAlmostEqual(circle2.radius, 3.0)
self.assertAlmostEqual(c2.value, 3.0)
# Submit value and setting
circle3 = entities.add_circle(nm, p0, 1.0, sketch)
c3 = constraints.add_diameter(
circle3, sketch=sketch, init=True, value=0.8, setting=True
)
self.solve()
self.assertAlmostEqual(circle3.radius, 0.8)
self.assertAlmostEqual(c3.value, 0.8)
# Toggle radius/diameter
c1.setting = True
self.assertAlmostEqual(circle1.radius, 2.0)
self.assertAlmostEqual(c1.value, 2.0)
c2.setting = False
self.assertAlmostEqual(circle2.radius, 3.0)
self.assertAlmostEqual(c2.value, 6.0)
def test_diameter_arc(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
nm = sketch.wp.nm
# Constrain arc
p1 = entities.add_point_2d((3.0, 0.0), sketch)
p2 = entities.add_point_2d((0.0, 3.0), sketch)
arc1 = entities.add_arc(nm, p0, p1, p2, sketch)
c1 = constraints.add_diameter(arc1, sketch=sketch, init=True)
self.solve()
self.assertAlmostEqual(arc1.radius, 3.0)
self.assertAlmostEqual(c1.value, 6.0)
c1.setting = True
self.assertAlmostEqual(arc1.radius, 3.0)
self.assertAlmostEqual(c1.value, 3.0)
def test_angle(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
# Line1
p1 = entities.add_point_2d((1, 1), sketch)
p1.fixed = True
line1 = entities.add_line_2d(p0, p1, sketch)
# Line2
p2 = entities.add_point_2d((0, 1), sketch)
line2 = entities.add_line_2d(p0, p2, sketch)
c = constraints.add_angle(line1, line2, sketch=sketch, init=True)
self.solve()
self.assertAlmostEqual(p2.co.x, 0.0)
self.assertGreater(p2.co.y, 0.0)
self.assertAlmostEqual(c.value, math.radians(45))
# NOTE: Which value (45 / (180-45)) is constrained depends on the directions of the lines
c.setting = not c.setting
self.solve()
self.assertAlmostEqual(p2.co.x, 0.0)
self.assertGreater(p2.co.y, 0.0)
self.assertAlmostEqual(c.value, math.radians(180 - 45))
def test_distance_ref(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
p1 = entities.add_point_2d((1, 1), sketch)
c1 = constraints.add_distance(p0, p1, sketch=sketch)
c1.is_reference = True
p1.co = (2, 0)
self.assertAlmostEqual(c1.value, 2)
def test_diameter_ref(self):
context = self.context
entities = self.entities
constraints = self.constraints
sketch = self.sketch
p0 = entities.add_point_2d((0, 0), sketch)
p0.fixed = True
nm = sketch.wp.nm
circle = entities.add_circle(nm, p0, 3, sketch)
c1 = constraints.add_diameter(circle, sketch=sketch)
c1.is_reference = True
circle.radius = 2.5
self.assertAlmostEqual(c1.value, 5.0)
def test_ratio(self):
p0 = self.entities.add_point_2d((0, 0), self.sketch)
p0.fixed = True
p1 = self.entities.add_point_2d((3, 0), self.sketch)
line1 = self.entities.add_line_2d(p0, p1, self.sketch)
p2 = self.entities.add_point_2d((0, 1), self.sketch)
line2 = self.entities.add_line_2d(p0, p2, self.sketch)
c = self.constraints.add_ratio(line1, line2, self.sketch, init=True)
self.solve()
self.assertAlmostEqual(c.value, 3.0)
p2.fixed = True
c.value = 4.0
self.solve()
self.assertAlmostEqual(line1.length, 4.0)