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from .render import GerberContext
from ..gerber_statements import *
from ..primitives import AMGroup, Arc, Circle, Line, Rectangle
class Rs274xContext(GerberContext):
def __init__(self, settings):
GerberContext.__init__(self)
self.header = []
self.body = []
self.end = [EofStmt()]
# Current values so we know if we have to execute
# moves, levey changes before anything else
self._level_polarity = None
self._pos = (None, None)
self._func = None
self._quadrant_mode = None
self._dcode = None
self._next_dcode = 10
self._rects = {}
self._circles = {}
self._macros = {}
self._i_none = 0
self._j_none = 0
self._define_dcodes()
def _define_dcodes(self):
self._get_circle(.1575, 10)
self._get_circle(.035, 17)
self._get_rectangle(0.1575, 0.1181, 15)
self._get_rectangle(0.0492, 0.0118, 16)
self._get_circle(.0197, 11)
self._get_rectangle(0.0236, 0.0591, 12)
self._get_circle(.005, 18)
self._get_circle(.008, 19)
self._get_circle(.009, 20)
self._get_circle(.01, 21)
self._get_circle(.02, 22)
self._get_circle(.006, 23)
self._get_circle(.015, 24)
self._get_rectangle(0.1678, 0.1284, 26)
self._get_rectangle(0.0338, 0.0694, 25)
def _simplify_point(self, point):
return (point[0] if point[0] != self._pos[0] else None, point[1] if point[1] != self._pos[1] else None)
def _simplify_offset(self, point, offset):
if point[0] != offset[0]:
xoffset = point[0] - offset[0]
else:
xoffset = self._i_none
if point[1] != offset[1]:
yoffset = point[1] - offset[1]
else:
yoffset = self._j_none
return (xoffset, yoffset)
@property
def statements(self):
return self.header + self.body + self.end
def set_bounds(self, bounds):
pass
def _paint_background(self):
pass
def _select_aperture(self, aperture):
# Select the right aperture if not already selected
if aperture:
if isinstance(aperture, Circle):
aper = self._get_circle(aperture.diameter)
elif isinstance(aperture, Rectangle):
aper = self._get_rectangle(aperture.width, aperture.height)
else:
raise NotImplementedError('Line with invalid aperture type')
if aper.d != self._dcode:
self.body.append(ApertureStmt(aper.d))
self._dcode = aper.d
def _render_line(self, line, color):
self._select_aperture(line.aperture)
# Get the right function
if self._func != CoordStmt.FUNC_LINEAR:
func = CoordStmt.FUNC_LINEAR
else:
func = None
self._func = CoordStmt.FUNC_LINEAR
if self._pos != line.start:
self.body.append(CoordStmt.move(func, self._simplify_point(line.start)))
self._pos = line.start
# We already set the function, so the next command doesn't require that
func = None
self.body.append(CoordStmt.line(func, self._simplify_point(line.end)))
self._pos = line.end
def _render_arc(self, arc, color):
# Optionally set the quadrant mode if it has changed:
if arc.quadrant_mode != self._quadrant_mode:
if arc.quadrant_mode != 'multi-quadrant':
self.body.append(QuadrantModeStmt.single())
else:
self.body.append(QuadrantModeStmt.multi())
self._quadrant_mode = arc.quadrant_mode
# Select the right aperture if not already selected
self._select_aperture(arc.aperture)
# Find the right movement mode. Always set to be sure it is really right
dir = arc.direction
if dir == 'clockwise':
func = CoordStmt.FUNC_ARC_CW
self._func = CoordStmt.FUNC_ARC_CW
elif dir == 'counterclockwise':
func = CoordStmt.FUNC_ARC_CCW
self._func = CoordStmt.FUNC_ARC_CCW
else:
raise ValueError('Invalid circular interpolation mode')
if self._pos != arc.start:
# TODO I'm not sure if this is right
self.body.append(CoordStmt.move(CoordStmt.FUNC_LINEAR, self._simplify_point(arc.start)))
self._pos = arc.start
center = self._simplify_offset(arc.center, arc.start)
end = self._simplify_point(arc.end)
self.body.append(CoordStmt.arc(func, end, center))
self._pos = arc.end
def _render_region(self, region, color):
self._render_level_polarity(region)
self.body.append(RegionModeStmt.on())
for p in region.primitives:
if isinstance(p, Line):
self._render_line(p, color)
else:
self._render_arc(p, color)
self.body.append(RegionModeStmt.off())
def _render_level_polarity(self, region):
if region.level_polarity != self._level_polarity:
self._level_polarity = region.level_polarity
self.body.append(LPParamStmt.from_region(region))
def _render_flash(self, primitive, aperture):
if aperture.d != self._dcode:
self.body.append(ApertureStmt(aperture.d))
self._dcode = aperture.d
self.body.append(CoordStmt.flash( self._simplify_point(primitive.position)))
self._pos = primitive.position
def _get_circle(self, diameter, dcode = None):
'''Define a circlar aperture'''
aper = self._circles.get(diameter, None)
if not aper:
if not dcode:
dcode = self._next_dcode
self._next_dcode += 1
else:
self._next_dcode = max(dcode + 1, self._next_dcode)
aper = ADParamStmt.circle(dcode, diameter)
self._circles[diameter] = aper
self.header.append(aper)
return aper
def _render_circle(self, circle, color):
aper = self._get_circle(circle.diameter)
self._render_flash(circle, aper)
def _get_rectangle(self, width, height, dcode = None):
'''Get a rectanglar aperture. If it isn't defined, create it'''
key = (width, height)
aper = self._rects.get(key, None)
if not aper:
if not dcode:
dcode = self._next_dcode
self._next_dcode += 1
else:
self._next_dcode = max(dcode + 1, self._next_dcode)
aper = ADParamStmt.rect(dcode, width, height)
self._rects[(width, height)] = aper
self.header.append(aper)
return aper
def _render_rectangle(self, rectangle, color):
aper = self._get_rectangle(rectangle.width, rectangle.height)
self._render_flash(rectangle, aper)
def _render_obround(self, obround, color):
pass
def _render_polygon(self, polygon, color):
pass
def _render_drill(self, circle, color):
pass
def _hash_amacro(self, amgroup):
'''Calculate a very quick hash code for deciding if we should even check AM groups for comparision'''
hash = ''
for primitive in amgroup.primitives:
hash += primitive.__class__.__name__[0]
if hasattr(primitive, 'primitives'):
hash += str(len(primitive.primitives))
return hash
def _get_amacro(self, amgroup, dcode = None):
# Macros are a little special since we don't have a good way to compare them quickly
# but in most cases, this should work
hash = self._hash_amacro(amgroup)
macro = self._macros.get(hash, None)
if not macro:
# This is a new macro, so define it
if not dcode:
dcode = self._next_dcode
self._next_dcode += 1
else:
self._next_dcode = max(dcode + 1, self._next_dcode)
# Create the statements
# TODO
statements = []
aperdef = ADParamStmt.macro(dcode, hash)
# Store the dcode and the original so we can check if it really is the same
macro = (aperdef, amgroup)
self._macros[hash] = macro
else:
# We hae a definition, but check that the groups actually are the same
offset = (amgroup.position[0] - macro[1].position[0], amgroup.position[1] - macro[1].position[1])
if not amgroup.equivalent(macro[1], offset):
raise ValueError('Two AMGroup have the same hash but are not equivalent')
return macro[0]
def _render_amgroup(self, amgroup, color):
aper = self._get_amacro(amgroup)
self._render_flash(amgroup, aper)
def _render_inverted_layer(self):
pass
def post_render_primitives(self):
'''No more primitives, so set the end marker'''
self.body.append()
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