#! /usr/bin/env python # -*- coding: utf-8 -*- # copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be> # Modified from code by Paulo Henrique Silva <ph.silva@gmail.com> # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # http://www.apache.org/licenses/LICENSE-2.0 # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Rendering ============ **Gerber (RS-274X) and Excellon file rendering** Render Gerber and Excellon files to a variety of formats. The render module currently supports SVG rendering using the `svgwrite` library. """ from ..gerber_statements import (CommentStmt, UnknownStmt, EofStmt, ParamStmt, CoordStmt, ApertureStmt, RegionModeStmt, QuadrantModeStmt, ) from ..primitives import * class GerberContext(object): """ Gerber rendering context base class Provides basic functionality and API for rendering gerber files. Medium- specific renderers should subclass GerberContext and implement the drawing functions. Colors are stored internally as 32-bit RGB and may need to be converted to a native format in the rendering subclass. Attributes ---------- units : string Measurement units. 'inch' or 'metric' color : tuple (<float>, <float>, <float>) Color used for rendering as a tuple of normalized (red, green, blue) values. drill_color : tuple (<float>, <float>, <float>) Color used for rendering drill hits. Format is the same as for `color`. background_color : tuple (<float>, <float>, <float>) Color of the background. Used when exposing areas in 'clear' level polarity mode. Format is the same as for `color`. alpha : float Rendering opacity. Between 0.0 (transparent) and 1.0 (opaque.) """ def __init__(self, units='inch'): self._units = units self._color = (0.7215, 0.451, 0.200) self._drill_color = (0.25, 0.25, 0.25) self._background_color = (0.0, 0.0, 0.0) self._alpha = 1.0 self._invert = False @property def units(self): return self._units @units.setter def units(self, units): if units not in ('inch', 'metric'): raise ValueError('Units may be "inch" or "metric"') self._units = units @property def color(self): return self._color @color.setter def color(self, color): if len(color) != 3: raise TypeError('Color must be a tuple of R, G, and B values') for c in color: if c < 0 or c > 1: raise ValueError('Channel values must be between 0.0 and 1.0') self._color = color @property def drill_color(self): return self._drill_color @drill_color.setter def drill_color(self, color): if len(color) != 3: raise TypeError('Drill color must be a tuple of R, G, and B values') for c in color: if c < 0 or c > 1: raise ValueError('Channel values must be between 0.0 and 1.0') self._drill_color = color @property def background_color(self): return self._background_color @background_color.setter def background_color(self, color): if len(color) != 3: raise TypeError('Background color must be a tuple of R, G, and B values') for c in color: if c < 0 or c > 1: raise ValueError('Channel values must be between 0.0 and 1.0') self._background_color = color @property def alpha(self): return self._alpha @alpha.setter def alpha(self, alpha): if alpha < 0 or alpha > 1: raise ValueError('Alpha must be between 0.0 and 1.0') self._alpha = alpha @property def invert(self): return self._invert @invert.setter def invert(self, invert): self._invert = invert def render(self, primitive): color = (self.color if primitive.level_polarity == 'dark' else self.background_color) if isinstance(primitive, Line): self._render_line(primitive, color) elif isinstance(primitive, Arc): self._render_arc(primitive, color) elif isinstance(primitive, Region): self._render_region(primitive, color) elif isinstance(primitive, Circle): self._render_circle(primitive, color) elif isinstance(primitive, Rectangle): self._render_rectangle(primitive, color) elif isinstance(primitive, Obround): self._render_obround(primitive, color) elif isinstance(primitive, Polygon): self._render_polygon(primitive, color) elif isinstance(primitive, Drill): self._render_drill(primitive, self.drill_color) elif isinstance(primitive, AMGroup): self._render_amgroup(primitive, color) elif isinstance(primitive, Outline): self._render_region(primitive, color) elif isinstance(primitive, TestRecord): self._render_test_record(primitive, color) else: return def _render_line(self, primitive, color): pass def _render_arc(self, primitive, color): pass def _render_region(self, primitive, color): pass def _render_circle(self, primitive, color): pass def _render_rectangle(self, primitive, color): pass def _render_obround(self, primitive, color): pass def _render_polygon(self, primitive, color): pass def _render_drill(self, primitive, color): pass def _render_amgroup(self, primitive, color): pass def _render_test_record(self, primitive, color): pass