diff options
Diffstat (limited to 'gerber/render/excellon_backend.py')
| -rw-r--r-- | gerber/render/excellon_backend.py | 91 |
1 files changed, 45 insertions, 46 deletions
diff --git a/gerber/render/excellon_backend.py b/gerber/render/excellon_backend.py index da5b22b..765d68c 100644 --- a/gerber/render/excellon_backend.py +++ b/gerber/render/excellon_backend.py @@ -4,13 +4,13 @@ from ..excellon import DrillSlot from ..excellon_statements import * class ExcellonContext(GerberContext): - + MODE_DRILL = 1 - MODE_SLOT =2 - + MODE_SLOT =2 + def __init__(self, settings): GerberContext.__init__(self) - + # Statements that we write self.comments = [] self.header = [] @@ -18,57 +18,57 @@ class ExcellonContext(GerberContext): self.body_start = [RewindStopStmt()] self.body = [] self.start = [HeaderBeginStmt()] - + # Current tool and position self.handled_tools = set() self.cur_tool = None self.drill_mode = ExcellonContext.MODE_DRILL self.drill_down = False self._pos = (None, None) - + self.settings = settings self._start_header() self._start_comments() - + def _start_header(self): """Create the header from the settings""" - + self.header.append(UnitStmt.from_settings(self.settings)) - + if self.settings.notation == 'incremental': raise NotImplementedError('Incremental mode is not implemented') else: self.body.append(AbsoluteModeStmt()) - + def _start_comments(self): - + # Write the digits used - this isn't valid Excellon statement, so we write as a comment self.comments.append(CommentStmt('FILE_FORMAT=%d:%d' % (self.settings.format[0], self.settings.format[1]))) - + def _get_end(self): """How we end depends on our mode""" - + end = [] - + if self.drill_down: end.append(RetractWithClampingStmt()) end.append(RetractWithoutClampingStmt()) - + end.append(EndOfProgramStmt()) - + return end - + @property def statements(self): return self.start + self.comments + self.header + self.body_start + self.body + self._get_end() - - def set_bounds(self, bounds): + + def set_bounds(self, bounds, *args, **kwargs): pass - - def _paint_background(self): + + def paint_background(self): pass - + def _render_line(self, line, color): raise ValueError('Invalid Excellon object') def _render_arc(self, arc, color): @@ -76,7 +76,7 @@ class ExcellonContext(GerberContext): def _render_region(self, region, color): raise ValueError('Invalid Excellon object') - + def _render_level_polarity(self, region): raise ValueError('Invalid Excellon object') @@ -85,105 +85,104 @@ class ExcellonContext(GerberContext): def _render_rectangle(self, rectangle, color): raise ValueError('Invalid Excellon object') - + def _render_obround(self, obround, color): raise ValueError('Invalid Excellon object') - + def _render_polygon(self, polygon, color): raise ValueError('Invalid Excellon object') - + 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 _render_drill(self, drill, color): - + if self.drill_mode != ExcellonContext.MODE_DRILL: self._start_drill_mode() - + tool = drill.hit.tool if not tool in self.handled_tools: self.handled_tools.add(tool) self.header.append(ExcellonTool.from_tool(tool)) - + if tool != self.cur_tool: self.body.append(ToolSelectionStmt(tool.number)) self.cur_tool = tool - + point = self._simplify_point(drill.position) self._pos = drill.position self.body.append(CoordinateStmt.from_point(point)) - + def _start_drill_mode(self): """ If we are not in drill mode, then end the ROUT so we can do basic drilling """ - + if self.drill_mode == ExcellonContext.MODE_SLOT: - + # Make sure we are retracted before changing modes last_cmd = self.body[-1] if self.drill_down: self.body.append(RetractWithClampingStmt()) self.body.append(RetractWithoutClampingStmt()) self.drill_down = False - + # Switch to drill mode self.body.append(DrillModeStmt()) self.drill_mode = ExcellonContext.MODE_DRILL - + else: raise ValueError('Should be in slot mode') - + def _render_slot(self, slot, color): - + # Set the tool first, before we might go into drill mode tool = slot.hit.tool if not tool in self.handled_tools: self.handled_tools.add(tool) self.header.append(ExcellonTool.from_tool(tool)) - + if tool != self.cur_tool: self.body.append(ToolSelectionStmt(tool.number)) self.cur_tool = tool - + # Two types of drilling - normal drill and slots if slot.hit.slot_type == DrillSlot.TYPE_ROUT: # For ROUT, setting the mode is part of the actual command. - + # Are we in the right position? if slot.start != self._pos: if self.drill_down: # We need to move into the right position, so retract self.body.append(RetractWithClampingStmt()) self.drill_down = False - + # Move to the right spot point = self._simplify_point(slot.start) self._pos = slot.start self.body.append(CoordinateStmt.from_point(point, mode="ROUT")) - + # Now we are in the right spot, so drill down if not self.drill_down: self.body.append(ZAxisRoutPositionStmt()) self.drill_down = True - + # Do a linear move from our current position to the end position point = self._simplify_point(slot.end) self._pos = slot.end self.body.append(CoordinateStmt.from_point(point, mode="LINEAR")) self.drill_mode = ExcellonContext.MODE_SLOT - + else: # This is a G85 slot, so do this in normally drilling mode if self.drill_mode != ExcellonContext.MODE_DRILL: self._start_drill_mode() - + # Slots don't use simplified points self._pos = slot.end self.body.append(SlotStmt.from_points(slot.start, slot.end)) def _render_inverted_layer(self): pass -
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