def test_planArc_counterClockwise_semicircle(self):
"""Tests the planArc method with a CCW semicircular 100 unit arc centered at (0,0)."""
arcRadius = 50
mockLogger = mock.Mock()
mockState = mock.Mock()
mockState.position.X_AXIS.nativeToLogical.return_value = -arcRadius
mockState.position.Y_AXIS.nativeToLogical.return_value = 0
unit = GcodeHandlers(mockState, mockLogger)
result = unit.planArc(arcRadius, 0, arcRadius, 0, False)
self._assert_planArc_commonResultProperties(start=(-arcRadius, 0),
end=(arcRadius, 0),
center=(0, 0),
radius=arcRadius,
items=result)
# y value comparisons
# - the y component of each point should be below or equal to the y axis
# - the y component direction must change one time
self._assert_planArc_axisProperties(
coordinateOffset=1,
initialValue=0,
initialDirection=-1,
expectedReversals=1,
items=result,
filterFunc=lambda x, y, direction, index: (self.assertTrue(
y <= 0, "Each y coordinate should be on or below the Y axis" +
": pt=(%s, %s) index=%s" % (x, y, index))))
# x value comparisons
# - the x component of each point should increase for each point
self._assert_planArc_axisProperties(coordinateOffset=0,
initialValue=-arcRadius,
initialDirection=1,
expectedReversals=0,
items=result)
def test_planArc_counterClockwise_circle(self):
"""Tests the planArc method with a CCW circular 100 unit arc centered at (0,0)."""
arcRadius = 50
mockLogger = mock.Mock()
mockState = mock.Mock()
mockState.position.X_AXIS.nativeToLogical.return_value = -arcRadius
mockState.position.Y_AXIS.nativeToLogical.return_value = 0
unit = GcodeHandlers(mockState, mockLogger)
result = unit.planArc(-arcRadius, 0, arcRadius, 0, False)
self._assert_planArc_commonResultProperties(start=(-arcRadius, 0),
end=(-arcRadius, 0),
center=(0, 0),
radius=arcRadius,
items=result)
# y value comparisons
# - the y component of each point to the left of x axis should have a negative direction
# - the y component of each point to the right of x axis should have a positive direction
# - the y component direction must change two times
ignoredY = {"first": False}
def filter_y(x, y, direction, index):
if (x < 0):
self.assertEqual(
direction, -1,
"The y direction should be negative for points to the left of the x axis"
+ ": pt=(%s, %s) index=%s" % (x, y, index))
elif (ignoredY["first"]):
self.assertEqual(
direction, 1,
"The y direction should be positive for points to the right of the x axis"
+ ": pt=(%s, %s) index=%s" % (x, y, index))
else:
# Ignore the first one, since it _could_ have the opposite direction at the boundary
ignoredY["first"] = True
self._assert_planArc_axisProperties(coordinateOffset=1,
initialValue=0,
initialDirection=-1,
expectedReversals=2,
items=result,
filterFunc=filter_y)
# x value comparisons
# - the x component of each point above the y axis should have a negative direction
# - the x component of each point below the y axis should have a positive direction
# - the x component direction must change one time
ignoredX = {"first": False}
def filter_x(x, y, direction, index):
if (y < 0):
self.assertEqual(
direction, 1,
"The x direction should be positive for points below the y axis"
+ ": pt=(%s, %s) index=%s" % (x, y, index))
elif (ignoredX["first"]):
self.assertEqual(
direction, -1,
"The x direction should be negative for points above the y axis"
+ ": pt=(%s, %s) index=%s" % (x, y, index))
else:
# Ignore the first one, since it _could_ have the opposite direction at the boundary
ignoredX["first"] = True
self._assert_planArc_axisProperties(coordinateOffset=0,
initialValue=-arcRadius,
initialDirection=1,
expectedReversals=1,
items=result,
filterFunc=filter_x)