from .render import GerberContext from ..am_statements import * from ..gerber_statements import * from ..primitives import AMGroup, Arc, Circle, Line, Outline, Rectangle from copy import deepcopy class AMGroupContext(object): '''A special renderer to generate aperature macros from an AMGroup''' def __init__(self): self.statements = [] def render(self, amgroup, name): # Clone ourselves, then offset by the psotion so that # our render doesn't have to consider offset. Just makes things simplder nooffset_group = deepcopy(amgroup) nooffset_group.position = (0, 0) # Now draw the shapes for primitive in nooffset_group.primitives: if isinstance(primitive, Outline): self._render_outline(primitive) statement = AMParamStmt('AM', name, self._statements_to_string()) return statement def _statements_to_string(self): macro = '' for statement in self.statements: macro += statement.to_gerber() return macro def _render_outline(self, outline): self.statements.append(AMOutlinePrimitive.from_primitive(outline)) class Rs274xContext(GerberContext): def __init__(self, settings): GerberContext.__init__(self) self.comments = [] 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.settings = settings self._start_header(settings) self._define_dcodes() def _start_header(self, settings): self.header.append(MOParamStmt.from_units(settings.units)) 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.comments + 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) self._render_level_polarity(line) # 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) self._render_level_polarity(arc) # 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 amrenderer = AMGroupContext() statement = amrenderer.render(amgroup, hash) self.header.append(statement) aperdef = ADParamStmt.macro(dcode, hash) self.header.append(aperdef) # 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()