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-rw-r--r--gerber/primitives.py203
-rw-r--r--gerber/tests/test_primitives.py134
-rw-r--r--gerber/tests/tests.py9
3 files changed, 318 insertions, 28 deletions
diff --git a/gerber/primitives.py b/gerber/primitives.py
index e13e37f..61df7c1 100644
--- a/gerber/primitives.py
+++ b/gerber/primitives.py
@@ -19,7 +19,21 @@ from operator import sub
class Primitive(object):
-
+ """ Base class for all Cam file primitives
+
+ Parameters
+ ---------
+ level_polarity : string
+ Polarity of the parameter. May be 'dark' or 'clear'. Dark indicates
+ a "positive" primitive, i.e. indicating where coppper should remain,
+ and clear indicates a negative primitive, such as where copper should
+ be removed. clear primitives are often used to create cutouts in region
+ pours.
+
+ rotation : float
+ Rotation of a primitive about its origin in degrees. Positive rotation
+ is counter-clockwise as viewed from the board top.
+ """
def __init__(self, level_polarity='dark', rotation=0):
self.level_polarity = level_polarity
self.rotation = rotation
@@ -102,7 +116,6 @@ class Arc(Primitive):
theta0 = (self.start_angle + two_pi) % two_pi
theta1 = (self.end_angle + two_pi) % two_pi
points = [self.start, self.end]
- #Shit's about to get ugly...
if self.direction == 'counterclockwise':
# Passes through 0 degrees
if theta0 > theta1:
@@ -170,13 +183,20 @@ class Ellipse(Primitive):
self.position = position
self.width = width
self.height = height
+ # Axis-aligned width and height
+ ux = (self.width / 2.) * math.cos(math.radians(self.rotation))
+ uy = (self.width / 2.) * math.sin(math.radians(self.rotation))
+ vx = (self.height / 2.) * math.cos(math.radians(self.rotation) + (math.pi / 2.))
+ vy = (self.height / 2.) * math.sin(math.radians(self.rotation) + (math.pi / 2.))
+ self._abs_width = 2 * math.sqrt((ux * ux) + (vx * vx))
+ self._abs_height = 2 * math.sqrt((uy * uy) + (vy * vy))
@property
def bounding_box(self):
- min_x = self.position[0] - (self.width / 2.0)
- max_x = self.position[0] + (self.width / 2.0)
- min_y = self.position[1] - (self.height / 2.0)
- max_y = self.position[1] + (self.height / 2.0)
+ min_x = self.position[0] - (self._abs_width / 2.0)
+ max_x = self.position[0] + (self._abs_width / 2.0)
+ min_y = self.position[1] - (self._abs_height / 2.0)
+ max_y = self.position[1] + (self._abs_height / 2.0)
return ((min_x, max_x), (min_y, max_y))
@@ -188,16 +208,21 @@ class Rectangle(Primitive):
self.position = position
self.width = width
self.height = height
+ # Axis-aligned width and height
+ self._abs_width = (math.cos(math.radians(self.rotation)) * self.width +
+ math.sin(math.radians(self.rotation)) * self.height)
+ self._abs_height = (math.cos(math.radians(self.rotation)) * self.height +
+ math.sin(math.radians(self.rotation)) * self.width)
@property
def lower_left(self):
- return (self.position[0] - (self.width / 2.),
- self.position[1] - (self.height / 2.))
+ return (self.position[0] - (self._abs_width / 2.),
+ self.position[1] - (self._abs_height / 2.))
@property
def upper_right(self):
- return (self.position[0] + (self.width / 2.),
- self.position[1] + (self.height / 2.))
+ return (self.position[0] + (self._abs_width / 2.),
+ self.position[1] + (self._abs_height / 2.))
@property
def bounding_box(self):
@@ -207,21 +232,109 @@ class Rectangle(Primitive):
max_y = self.upper_right[1]
return ((min_x, max_x), (min_y, max_y))
- @property
- def stroke_width(self):
- return max((self.width, self.height))
class Diamond(Primitive):
- pass
+ """
+ """
+ def __init__(self, position, width, height, **kwargs):
+ super(Diamond, self).__init__(**kwargs)
+ self.position = position
+ self.width = width
+ self.height = height
+ # Axis-aligned width and height
+ self._abs_width = (math.cos(math.radians(self.rotation)) * self.width +
+ math.sin(math.radians(self.rotation)) * self.height)
+ self._abs_height = (math.cos(math.radians(self.rotation)) * self.height +
+ math.sin(math.radians(self.rotation)) * self.width)
+
+ @property
+ def lower_left(self):
+ return (self.position[0] - (self._abs_width / 2.),
+ self.position[1] - (self._abs_height / 2.))
+
+ @property
+ def upper_right(self):
+ return (self.position[0] + (self._abs_width / 2.),
+ self.position[1] + (self._abs_height / 2.))
+
+ @property
+ def bounding_box(self):
+ min_x = self.lower_left[0]
+ max_x = self.upper_right[0]
+ min_y = self.lower_left[1]
+ max_y = self.upper_right[1]
+ return ((min_x, max_x), (min_y, max_y))
class ChamferRectangle(Primitive):
- pass
+ """
+ """
+ def __init__(self, position, width, height, chamfer, corners, **kwargs):
+ super(ChamferRectangle, self).__init__(**kwargs)
+ self.position = position
+ self.width = width
+ self.height = height
+ self.chamfer = chamfer
+ self.corners = corners
+ # Axis-aligned width and height
+ self._abs_width = (math.cos(math.radians(self.rotation)) * self.width +
+ math.sin(math.radians(self.rotation)) * self.height)
+ self._abs_height = (math.cos(math.radians(self.rotation)) * self.height +
+ math.sin(math.radians(self.rotation)) * self.width)
+
+ @property
+ def lower_left(self):
+ return (self.position[0] - (self._abs_width / 2.),
+ self.position[1] - (self._abs_height / 2.))
+
+ @property
+ def upper_right(self):
+ return (self.position[0] + (self._abs_width / 2.),
+ self.position[1] + (self._abs_height / 2.))
+
+ @property
+ def bounding_box(self):
+ min_x = self.lower_left[0]
+ max_x = self.upper_right[0]
+ min_y = self.lower_left[1]
+ max_y = self.upper_right[1]
+ return ((min_x, max_x), (min_y, max_y))
class RoundRectangle(Primitive):
- pass
+ """
+ """
+ def __init__(self, position, width, height, radius, corners, **kwargs):
+ super(RoundRectangle, self).__init__(**kwargs)
+ self.position = position
+ self.width = width
+ self.height = height
+ self.radius = radius
+ self.corners = corners
+ # Axis-aligned width and height
+ self._abs_width = (math.cos(math.radians(self.rotation)) * self.width +
+ math.sin(math.radians(self.rotation)) * self.height)
+ self._abs_height = (math.cos(math.radians(self.rotation)) * self.height +
+ math.sin(math.radians(self.rotation)) * self.width)
+
+ @property
+ def lower_left(self):
+ return (self.position[0] - (self._abs_width / 2.),
+ self.position[1] - (self._abs_height / 2.))
+
+ @property
+ def upper_right(self):
+ return (self.position[0] + (self._abs_width / 2.),
+ self.position[1] + (self._abs_height / 2.))
+
+ @property
+ def bounding_box(self):
+ min_x = self.lower_left[0]
+ max_x = self.upper_right[0]
+ min_y = self.lower_left[1]
+ max_y = self.upper_right[1]
+ return ((min_x, max_x), (min_y, max_y))
class Obround(Primitive):
@@ -310,7 +423,7 @@ class Region(Primitive):
class RoundButterfly(Primitive):
- """
+ """ A circle with two diagonally-opposite quadrants removed
"""
def __init__(self, position, diameter, **kwargs):
super(RoundButterfly, self).__init__(**kwargs)
@@ -328,17 +441,64 @@ class RoundButterfly(Primitive):
min_y = self.position[1] - self.radius
max_y = self.position[1] + self.radius
return ((min_x, max_x), (min_y, max_y))
-
+
class SquareButterfly(Primitive):
- pass
+ """ A square with two diagonally-opposite quadrants removed
+ """
+ def __init__(self, position, side, **kwargs):
+ super(SquareButterfly, self).__init__(**kwargs)
+ self.position = position
+ self.side = side
+
+
+ @property
+ def bounding_box(self):
+ min_x = self.position[0] - (self.side / 2.)
+ max_x = self.position[0] + (self.side / 2.)
+ min_y = self.position[1] - (self.side / 2.)
+ max_y = self.position[1] + (self.side / 2.)
+ return ((min_x, max_x), (min_y, max_y))
class Donut(Primitive):
- pass
+ """ A Shape with an identical concentric shape removed from its center
+ """
+ def __init__(self, position, shape, inner_diameter, outer_diameter, **kwargs):
+ super(Donut, self).__init__(**kwargs)
+ self.position = position
+ self.shape = shape
+ self.inner_diameter = inner_diameter
+ self.outer_diameter = outer_diameter
+ if self.shape in ('round', 'square', 'octagon'):
+ self.width = outer_diameter
+ self.height = outer_diameter
+ else:
+ # Hexagon
+ self.width = 0.5 * math.sqrt(3.) * outer_diameter
+ self.height = outer_diameter
+
+
+ @property
+ def lower_left(self):
+ return (self.position[0] - (self.width / 2.),
+ self.position[1] - (self.height / 2.))
+
+ @property
+ def upper_right(self):
+ return (self.position[0] + (self.width / 2.),
+ self.position[1] + (self.height / 2.))
+
+ @property
+ def bounding_box(self):
+ min_x = self.lower_left[0]
+ max_x = self.upper_right[0]
+ min_y = self.lower_left[1]
+ max_y = self.upper_right[1]
+ return ((min_x, max_x), (min_y, max_y))
class Drill(Primitive):
- """
+ """ A drill hole
"""
def __init__(self, position, diameter):
super(Drill, self).__init__('dark')
@@ -356,3 +516,4 @@ class Drill(Primitive):
min_y = self.position[1] - self.radius
max_y = self.position[1] + self.radius
return ((min_x, max_x), (min_y, max_y))
+
diff --git a/gerber/tests/test_primitives.py b/gerber/tests/test_primitives.py
index 29036b4..4534484 100644
--- a/gerber/tests/test_primitives.py
+++ b/gerber/tests/test_primitives.py
@@ -6,7 +6,6 @@ from ..primitives import *
from tests import *
-
def test_line_angle():
""" Test Line primitive angle calculation
"""
@@ -22,7 +21,8 @@ def test_line_angle():
l = Line(start, end, 0)
line_angle = (l.angle + 2 * math.pi) % (2 * math.pi)
assert_almost_equal(line_angle, expected)
-
+
+
def test_line_bounds():
""" Test Line primitive bounding box calculation
"""
@@ -34,6 +34,7 @@ def test_line_bounds():
l = Line(start, end, 0)
assert_equal(l.bounding_box, expected)
+
def test_arc_radius():
""" Test Arc primitive radius calculation
"""
@@ -65,21 +66,144 @@ def test_arc_bounds():
((1, 0), (0, 1), (0, 0), 'counterclockwise', ((0, 1), (0, 1))),
#TODO: ADD MORE TEST CASES HERE
]
-
for start, end, center, direction, bounds in cases:
a = Arc(start, end, center, direction, 0)
assert_equal(a.bounding_box, bounds)
-
+
+
def test_circle_radius():
""" Test Circle primitive radius calculation
"""
c = Circle((1, 1), 2)
assert_equal(c.radius, 1)
-
+
+
def test_circle_bounds():
""" Test Circle bounding box calculation
"""
c = Circle((1, 1), 2)
assert_equal(c.bounding_box, ((0, 2), (0, 2)))
+
+
+def test_ellipse_ctor():
+ """ Test ellipse creation
+ """
+ e = Ellipse((2, 2), 3, 2)
+ assert_equal(e.position, (2, 2))
+ assert_equal(e.width, 3)
+ assert_equal(e.height, 2)
+
+
+def test_ellipse_bounds():
+ """ Test ellipse bounding box calculation
+ """
+ e = Ellipse((2, 2), 4, 2)
+ assert_equal(e.bounding_box, ((0, 4), (1, 3)))
+ e = Ellipse((2, 2), 4, 2, rotation=90)
+ assert_equal(e.bounding_box, ((1, 3), (0, 4)))
+ e = Ellipse((2, 2), 4, 2, rotation=180)
+ assert_equal(e.bounding_box, ((0, 4), (1, 3)))
+ e = Ellipse((2, 2), 4, 2, rotation=270)
+ assert_equal(e.bounding_box, ((1, 3), (0, 4)))
+
+def test_rectangle_ctor():
+ """ Test rectangle creation
+ """
+ test_cases = (((0,0), 1, 1), ((0, 0), 1, 2), ((1,1), 1, 2))
+ for pos, width, height in test_cases:
+ r = Rectangle(pos, width, height)
+ assert_equal(r.position, pos)
+ assert_equal(r.width, width)
+ assert_equal(r.height, height)
+
+def test_rectangle_bounds():
+ """ Test rectangle bounding box calculation
+ """
+ r = Rectangle((0,0), 2, 2)
+ xbounds, ybounds = r.bounding_box
+ assert_array_almost_equal(xbounds, (-1, 1))
+ assert_array_almost_equal(ybounds, (-1, 1))
+ r = Rectangle((0,0), 2, 2, rotation=45)
+ xbounds, ybounds = r.bounding_box
+ assert_array_almost_equal(xbounds, (-math.sqrt(2), math.sqrt(2)))
+ assert_array_almost_equal(ybounds, (-math.sqrt(2), math.sqrt(2)))
+
+def test_diamond_ctor():
+ """ Test diamond creation
+ """
+ test_cases = (((0,0), 1, 1), ((0, 0), 1, 2), ((1,1), 1, 2))
+ for pos, width, height in test_cases:
+ d = Diamond(pos, width, height)
+ assert_equal(d.position, pos)
+ assert_equal(d.width, width)
+ assert_equal(d.height, height)
+
+def test_diamond_bounds():
+ """ Test diamond bounding box calculation
+ """
+ d = Diamond((0,0), 2, 2)
+ xbounds, ybounds = d.bounding_box
+ assert_array_almost_equal(xbounds, (-1, 1))
+ assert_array_almost_equal(ybounds, (-1, 1))
+ d = Diamond((0,0), math.sqrt(2), math.sqrt(2), rotation=45)
+ xbounds, ybounds = d.bounding_box
+ assert_array_almost_equal(xbounds, (-1, 1))
+ assert_array_almost_equal(ybounds, (-1, 1))
+
+
+def test_chamfer_rectangle_ctor():
+ """ Test chamfer rectangle creation
+ """
+ test_cases = (((0,0), 1, 1, 0.2, (True, True, False, False)),
+ ((0, 0), 1, 2, 0.3, (True, True, True, True)),
+ ((1,1), 1, 2, 0.4, (False, False, False, False)))
+ for pos, width, height, chamfer, corners in test_cases:
+ r = ChamferRectangle(pos, width, height, chamfer, corners)
+ assert_equal(r.position, pos)
+ assert_equal(r.width, width)
+ assert_equal(r.height, height)
+ assert_equal(r.chamfer, chamfer)
+ assert_array_almost_equal(r.corners, corners)
+
+def test_chamfer_rectangle_bounds():
+ """ Test chamfer rectangle bounding box calculation
+ """
+ r = ChamferRectangle((0,0), 2, 2, 0.2, (True, True, False, False))
+ xbounds, ybounds = r.bounding_box
+ assert_array_almost_equal(xbounds, (-1, 1))
+ assert_array_almost_equal(ybounds, (-1, 1))
+ r = ChamferRectangle((0,0), 2, 2, 0.2, (True, True, False, False), rotation=45)
+ xbounds, ybounds = r.bounding_box
+ assert_array_almost_equal(xbounds, (-math.sqrt(2), math.sqrt(2)))
+ assert_array_almost_equal(ybounds, (-math.sqrt(2), math.sqrt(2)))
+
+
+def test_round_rectangle_ctor():
+ """ Test round rectangle creation
+ """
+ test_cases = (((0,0), 1, 1, 0.2, (True, True, False, False)),
+ ((0, 0), 1, 2, 0.3, (True, True, True, True)),
+ ((1,1), 1, 2, 0.4, (False, False, False, False)))
+ for pos, width, height, radius, corners in test_cases:
+ r = RoundRectangle(pos, width, height, radius, corners)
+ assert_equal(r.position, pos)
+ assert_equal(r.width, width)
+ assert_equal(r.height, height)
+ assert_equal(r.radius, radius)
+ assert_array_almost_equal(r.corners, corners)
+
+def test_round_rectangle_bounds():
+ """ Test round rectangle bounding box calculation
+ """
+ r = RoundRectangle((0,0), 2, 2, 0.2, (True, True, False, False))
+ xbounds, ybounds = r.bounding_box
+ assert_array_almost_equal(xbounds, (-1, 1))
+ assert_array_almost_equal(ybounds, (-1, 1))
+ r = RoundRectangle((0,0), 2, 2, 0.2, (True, True, False, False), rotation=45)
+ xbounds, ybounds = r.bounding_box
+ assert_array_almost_equal(xbounds, (-math.sqrt(2), math.sqrt(2)))
+ assert_array_almost_equal(ybounds, (-math.sqrt(2), math.sqrt(2)))
+
+ \ No newline at end of file
diff --git a/gerber/tests/tests.py b/gerber/tests/tests.py
index 222eea3..e7029e4 100644
--- a/gerber/tests/tests.py
+++ b/gerber/tests/tests.py
@@ -15,5 +15,10 @@ from nose.tools import raises
from nose import with_setup
__all__ = ['assert_in', 'assert_not_in', 'assert_equal', 'assert_not_equal',
- 'assert_almost_equal', 'assert_true', 'assert_false',
- 'assert_raises', 'raises', 'with_setup' ]
+ 'assert_almost_equal', 'assert_array_almost_equal', 'assert_true',
+ 'assert_false', 'assert_raises', 'raises', 'with_setup' ]
+
+def assert_array_almost_equal(arr1, arr2, decimal=6):
+ assert_equal(len(arr1), len(arr2))
+ for i in xrange(len(arr1)):
+ assert_almost_equal(arr1[i], arr2[i], decimal) \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-01 12:19:56 +0000