diff options
Diffstat (limited to 'gerber/render')
| -rw-r--r-- | gerber/render/__init__.py | 31 | ||||
| -rw-r--r-- | gerber/render/cairo_backend.py | 616 | ||||
| -rw-r--r-- | gerber/render/excellon_backend.py | 188 | ||||
| -rw-r--r-- | gerber/render/render.py | 246 | ||||
| -rw-r--r-- | gerber/render/rs274x_backend.py | 510 | ||||
| -rw-r--r-- | gerber/render/theme.py | 112 |
6 files changed, 1703 insertions, 0 deletions
diff --git a/gerber/render/__init__.py b/gerber/render/__init__.py new file mode 100644 index 0000000..c7dbdd5 --- /dev/null +++ b/gerber/render/__init__.py @@ -0,0 +1,31 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- + +# copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be> + +# 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. +""" +gerber.render +============ +**Gerber Renderers** + +This module provides contexts for rendering images of gerber layers. Currently +SVG is the only supported format. +""" + +from .render import RenderSettings +from .cairo_backend import GerberCairoContext + +available_renderers = { + 'cairo': GerberCairoContext, +} diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py new file mode 100644 index 0000000..e1d1408 --- /dev/null +++ b/gerber/render/cairo_backend.py @@ -0,0 +1,616 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be> + +# 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. + +try: + import cairo +except ImportError: + import cairocffi as cairo + +from operator import mul +import tempfile +import copy +import os + +from .render import GerberContext, RenderSettings +from .theme import THEMES +from ..primitives import * +from ..utils import rotate_point + +from io import BytesIO + + +class GerberCairoContext(GerberContext): + + def __init__(self, scale=300): + super(GerberCairoContext, self).__init__() + self.scale = (scale, scale) + self.surface = None + self.surface_buffer = None + self.ctx = None + self.active_layer = None + self.active_matrix = None + self.output_ctx = None + self.has_bg = False + self.origin_in_inch = None + self.size_in_inch = None + self._xform_matrix = None + self._render_count = 0 + + @property + def origin_in_pixels(self): + return (self.scale_point(self.origin_in_inch) + if self.origin_in_inch is not None else (0.0, 0.0)) + + @property + def size_in_pixels(self): + return (self.scale_point(self.size_in_inch) + if self.size_in_inch is not None else (0.0, 0.0)) + + def set_bounds(self, bounds, new_surface=False): + origin_in_inch = (bounds[0][0], bounds[1][0]) + size_in_inch = (abs(bounds[0][1] - bounds[0][0]), + abs(bounds[1][1] - bounds[1][0])) + size_in_pixels = self.scale_point(size_in_inch) + self.origin_in_inch = origin_in_inch if self.origin_in_inch is None else self.origin_in_inch + self.size_in_inch = size_in_inch if self.size_in_inch is None else self.size_in_inch + self._xform_matrix = cairo.Matrix(xx=1.0, yy=-1.0, + x0=-self.origin_in_pixels[0], + y0=self.size_in_pixels[1]) + if (self.surface is None) or new_surface: + self.surface_buffer = tempfile.NamedTemporaryFile() + self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1]) + self.output_ctx = cairo.Context(self.surface) + + def render_layer(self, layer, filename=None, settings=None, bgsettings=None, + verbose=False, bounds=None): + if settings is None: + settings = THEMES['default'].get(layer.layer_class, RenderSettings()) + if bgsettings is None: + bgsettings = THEMES['default'].get('background', RenderSettings()) + + if self._render_count == 0: + if verbose: + print('[Render]: Rendering Background.') + self.clear() + if bounds is not None: + self.set_bounds(bounds) + else: + self.set_bounds(layer.bounds) + self.paint_background(bgsettings) + if verbose: + print('[Render]: Rendering {} Layer.'.format(layer.layer_class)) + self._render_count += 1 + self._render_layer(layer, settings) + if filename is not None: + self.dump(filename, verbose) + + def render_layers(self, layers, filename, theme=THEMES['default'], + verbose=False, max_width=800, max_height=600): + """ Render a set of layers + """ + # Calculate scale parameter + x_range = [10000, -10000] + y_range = [10000, -10000] + for layer in layers: + bounds = layer.bounds + if bounds is not None: + layer_x, layer_y = bounds + x_range[0] = min(x_range[0], layer_x[0]) + x_range[1] = max(x_range[1], layer_x[1]) + y_range[0] = min(y_range[0], layer_y[0]) + y_range[1] = max(y_range[1], layer_y[1]) + width = x_range[1] - x_range[0] + height = y_range[1] - y_range[0] + + scale = math.floor(min(float(max_width)/width, float(max_height)/height)) + self.scale = (scale, scale) + + self.clear() + + # Render layers + bgsettings = theme['background'] + for layer in layers: + settings = theme.get(layer.layer_class, RenderSettings()) + self.render_layer(layer, settings=settings, bgsettings=bgsettings, + verbose=verbose) + self.dump(filename, verbose) + + def dump(self, filename=None, verbose=False): + """ Save image as `filename` + """ + try: + is_svg = os.path.splitext(filename.lower())[1] == '.svg' + except: + is_svg = False + if verbose: + print('[Render]: Writing image to {}'.format(filename)) + if is_svg: + self.surface.finish() + self.surface_buffer.flush() + with open(filename, "wb") as f: + self.surface_buffer.seek(0) + f.write(self.surface_buffer.read()) + f.flush() + else: + return self.surface.write_to_png(filename) + + def dump_str(self): + """ Return a byte-string containing the rendered image. + """ + fobj = BytesIO() + self.surface.write_to_png(fobj) + return fobj.getvalue() + + def dump_svg_str(self): + """ Return a string containg the rendered SVG. + """ + self.surface.finish() + self.surface_buffer.flush() + return self.surface_buffer.read() + + def clear(self): + self.surface = None + self.output_ctx = None + self.has_bg = False + self.origin_in_inch = None + self.size_in_inch = None + self._xform_matrix = None + self._render_count = 0 + self.surface_buffer = None + + def _new_mask(self): + class Mask: + def __enter__(msk): + size_in_pixels = self.size_in_pixels + msk.surface = cairo.SVGSurface(None, size_in_pixels[0], + size_in_pixels[1]) + msk.ctx = cairo.Context(msk.surface) + msk.ctx.translate(-self.origin_in_pixels[0], -self.origin_in_pixels[1]) + return msk + + + def __exit__(msk, exc_type, exc_val, traceback): + if hasattr(msk.surface, 'finish'): + msk.surface.finish() + + return Mask() + + def _render_layer(self, layer, settings): + self.invert = settings.invert + # Get a new clean layer to render on + self.new_render_layer(mirror=settings.mirror) + for prim in layer.primitives: + self.render(prim) + # Add layer to image + self.flatten(settings.color, settings.alpha) + + def _render_line(self, line, color): + start = self.scale_point(line.start) + end = self.scale_point(line.end) + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and line.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + + with self._clip_primitive(line): + with self._new_mask() as mask: + if isinstance(line.aperture, Circle): + width = line.aperture.diameter + mask.ctx.set_line_width(width * self.scale[0]) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + mask.ctx.move_to(*start) + mask.ctx.line_to(*end) + mask.ctx.stroke() + + elif hasattr(line, 'vertices') and line.vertices is not None: + points = [self.scale_point(x) for x in line.vertices] + mask.ctx.set_line_width(0) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_arc(self, arc, color): + center = self.scale_point(arc.center) + start = self.scale_point(arc.start) + end = self.scale_point(arc.end) + radius = self.scale[0] * arc.radius + two_pi = 2 * math.pi + angle1 = (arc.start_angle + two_pi) % two_pi + angle2 = (arc.end_angle + two_pi) % two_pi + if angle1 == angle2 and arc.quadrant_mode != 'single-quadrant': + # Make the angles slightly different otherwise Cario will draw nothing + angle2 -= 0.000000001 + if isinstance(arc.aperture, Circle): + width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001 + else: + width = max(arc.aperture.width, arc.aperture.height, 0.001) + + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and arc.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._clip_primitive(arc): + with self._new_mask() as mask: + mask.ctx.set_line_width(width * self.scale[0]) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND if isinstance(arc.aperture, Circle) else cairo.LINE_CAP_SQUARE) + mask.ctx.move_to(*start) # You actually have to do this... + if arc.direction == 'counterclockwise': + mask.ctx.arc(center[0], center[1], radius, angle1, angle2) + else: + mask.ctx.arc_negative(center[0], center[1], radius, + angle1, angle2) + mask.ctx.move_to(*end) # ...lame + mask.ctx.stroke() + + #if isinstance(arc.aperture, Rectangle): + # print("Flash Rectangle Ends") + # print(arc.aperture.rotation * 180/math.pi) + # rect = arc.aperture + # width = self.scale[0] * rect.width + # height = self.scale[1] * rect.height + # for point, angle in zip((start, end), (angle1, angle2)): + # print("{} w {} h{}".format(point, rect.width, rect.height)) + # mask.ctx.rectangle(point[0] - width/2.0, + # point[1] - height/2.0, width, height) + # mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_region(self, region, color): + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) and region.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._clip_primitive(region): + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + mask.ctx.move_to(*self.scale_point(region.primitives[0].start)) + for prim in region.primitives: + if isinstance(prim, Line): + mask.ctx.line_to(*self.scale_point(prim.end)) + else: + center = self.scale_point(prim.center) + radius = self.scale[0] * prim.radius + angle1 = prim.start_angle + angle2 = prim.end_angle + if prim.direction == 'counterclockwise': + mask.ctx.arc(center[0], center[1], radius, + angle1, angle2) + else: + mask.ctx.arc_negative(center[0], center[1], radius, + angle1, angle2) + mask.ctx.fill() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_circle(self, circle, color): + center = self.scale_point(circle.position) + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and circle.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._clip_primitive(circle): + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + mask.ctx.arc(center[0], center[1], (circle.radius * self.scale[0]), 0, (2 * math.pi)) + mask.ctx.fill() + + if hasattr(circle, 'hole_diameter') and circle.hole_diameter is not None and circle.hole_diameter > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR) + mask.ctx.arc(center[0], center[1], circle.hole_radius * self.scale[0], 0, 2 * math.pi) + mask.ctx.fill() + + if (hasattr(circle, 'hole_width') and hasattr(circle, 'hole_height') + and circle.hole_width is not None and circle.hole_height is not None + and circle.hole_width > 0 and circle.hole_height > 0): + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if circle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height = self.scale_point((circle.hole_width, circle.hole_height)) + lower_left = rotate_point( + (center[0] - width / 2.0, center[1] - height / 2.0), + circle.rotation, center) + lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0), + circle.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), + circle.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), + circle.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_rectangle(self, rectangle, color): + lower_left = self.scale_point(rectangle.lower_left) + width, height = tuple([abs(coord) for coord in + self.scale_point((rectangle.width, + rectangle.height))]) + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and rectangle.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._clip_primitive(rectangle): + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + mask.ctx.rectangle(lower_left[0], lower_left[1], width, height) + mask.ctx.fill() + + center = self.scale_point(rectangle.position) + if rectangle.hole_diameter > 0: + # Render the center clear + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if rectangle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + + mask.ctx.arc(center[0], center[1], rectangle.hole_radius * self.scale[0], 0, 2 * math.pi) + mask.ctx.fill() + + if rectangle.hole_width > 0 and rectangle.hole_height > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if rectangle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height = self.scale_point((rectangle.hole_width, rectangle.hole_height)) + lower_left = rotate_point((center[0] - width/2.0, center[1] - height/2.0), rectangle.rotation, center) + lower_right = rotate_point((center[0] + width/2.0, center[1] - height/2.0), rectangle.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), rectangle.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), rectangle.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_obround(self, obround, color): + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and obround.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._clip_primitive(obround): + with self._new_mask() as mask: + mask.ctx.set_line_width(0) + + # Render circles + for circle in (obround.subshapes['circle1'], obround.subshapes['circle2']): + center = self.scale_point(circle.position) + mask.ctx.arc(center[0], center[1], (circle.radius * self.scale[0]), 0, (2 * math.pi)) + mask.ctx.fill() + + # Render Rectangle + rectangle = obround.subshapes['rectangle'] + lower_left = self.scale_point(rectangle.lower_left) + width, height = tuple([abs(coord) for coord in + self.scale_point((rectangle.width, + rectangle.height))]) + mask.ctx.rectangle(lower_left[0], lower_left[1], width, height) + mask.ctx.fill() + + center = self.scale_point(obround.position) + if obround.hole_diameter > 0: + # Render the center clear + mask.ctx.set_operator(cairo.OPERATOR_CLEAR) + mask.ctx.arc(center[0], center[1], obround.hole_radius * self.scale[0], 0, 2 * math.pi) + mask.ctx.fill() + + if obround.hole_width > 0 and obround.hole_height > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if rectangle.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height =self.scale_point((obround.hole_width, obround.hole_height)) + lower_left = rotate_point((center[0] - width / 2.0, center[1] - height / 2.0), + obround.rotation, center) + lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0), + obround.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), + obround.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), + obround.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_polygon(self, polygon, color): + self.ctx.set_operator(cairo.OPERATOR_OVER + if (not self.invert) + and polygon.level_polarity == 'dark' + else cairo.OPERATOR_CLEAR) + with self._clip_primitive(polygon): + with self._new_mask() as mask: + + vertices = polygon.vertices + mask.ctx.set_line_width(0) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + # Start from before the end so it is easy to iterate and make sure + # it is closed + mask.ctx.move_to(*self.scale_point(vertices[-1])) + for v in vertices: + mask.ctx.line_to(*self.scale_point(v)) + mask.ctx.fill() + + center = self.scale_point(polygon.position) + if polygon.hole_radius > 0: + # Render the center clear + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if polygon.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + mask.ctx.set_line_width(0) + mask.ctx.arc(center[0], + center[1], + polygon.hole_radius * self.scale[0], 0, 2 * math.pi) + mask.ctx.fill() + + if polygon.hole_width > 0 and polygon.hole_height > 0: + mask.ctx.set_operator(cairo.OPERATOR_CLEAR + if polygon.level_polarity == 'dark' + and (not self.invert) + else cairo.OPERATOR_OVER) + width, height = self.scale_point((polygon.hole_width, polygon.hole_height)) + lower_left = rotate_point((center[0] - width / 2.0, center[1] - height / 2.0), + polygon.rotation, center) + lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0), + polygon.rotation, center) + upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), + polygon.rotation, center) + upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), + polygon.rotation, center) + points = (lower_left, lower_right, upper_right, upper_left) + mask.ctx.move_to(*points[-1]) + for point in points: + mask.ctx.line_to(*point) + mask.ctx.fill() + + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_drill(self, circle, color=None): + color = color if color is not None else self.drill_color + self._render_circle(circle, color) + + def _render_slot(self, slot, color): + start = map(mul, slot.start, self.scale) + end = map(mul, slot.end, self.scale) + + width = slot.diameter + + self.ctx.set_operator(cairo.OPERATOR_OVER + if slot.level_polarity == 'dark' and + (not self.invert) else cairo.OPERATOR_CLEAR) + with self._clip_primitive(slot): + with self._new_mask() as mask: + mask.ctx.set_line_width(width * self.scale[0]) + mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + mask.ctx.move_to(*start) + mask.ctx.line_to(*end) + mask.ctx.stroke() + self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0]) + + def _render_amgroup(self, amgroup, color): + for primitive in amgroup.primitives: + self.render(primitive) + + def _render_test_record(self, primitive, color): + position = [pos + origin for pos, origin in + zip(primitive.position, self.origin_in_inch)] + self.ctx.select_font_face( + 'monospace', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD) + self.ctx.set_font_size(13) + self._render_circle(Circle(position, 0.015), color) + self.ctx.set_operator(cairo.OPERATOR_OVER + if primitive.level_polarity == 'dark' and + (not self.invert) else cairo.OPERATOR_CLEAR) + self.ctx.move_to(*[self.scale[0] * (coord + 0.015) for coord in position]) + self.ctx.scale(1, -1) + self.ctx.show_text(primitive.net_name) + self.ctx.scale(1, -1) + + def new_render_layer(self, color=None, mirror=False): + size_in_pixels = self.scale_point(self.size_in_inch) + matrix = copy.copy(self._xform_matrix) + layer = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1]) + ctx = cairo.Context(layer) + + if self.invert: + ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + ctx.set_operator(cairo.OPERATOR_OVER) + ctx.paint() + if mirror: + matrix.xx = -1.0 + matrix.x0 = self.origin_in_pixels[0] + self.size_in_pixels[0] + self.ctx = ctx + self.ctx.set_matrix(matrix) + self.active_layer = layer + self.active_matrix = matrix + + def flatten(self, color=None, alpha=None): + color = color if color is not None else self.color + alpha = alpha if alpha is not None else self.alpha + self.output_ctx.set_source_rgba(color[0], color[1], color[2], alpha) + self.output_ctx.mask_surface(self.active_layer) + self.ctx = None + self.active_layer = None + self.active_matrix = None + + def paint_background(self, settings=None): + color = settings.color if settings is not None else self.background_color + alpha = settings.alpha if settings is not None else 1.0 + if not self.has_bg: + self.has_bg = True + self.output_ctx.set_source_rgba(color[0], color[1], color[2], alpha) + self.output_ctx.paint() + + def _clip_primitive(self, primitive): + """ Clip rendering context to pixel-aligned bounding box + + Calculates pixel- and axis- aligned bounding box, and clips current + context to that region. Improves rendering speed significantly. This + returns a context manager, use as follows: + + with self._clip_primitive(some_primitive): + do_rendering_stuff() + do_more_rendering stuff(with, arguments) + + The context manager will reset the context's clipping region when it + goes out of scope. + + """ + class Clip: + def __init__(clp, primitive): + x_range, y_range = primitive.bounding_box + xmin, xmax = x_range + ymin, ymax = y_range + + # Round bounds to the nearest pixel outside of the primitive + clp.xmin = math.floor(self.scale[0] * xmin) + clp.xmax = math.ceil(self.scale[0] * xmax) + + # We need to offset Y to take care of the difference in y-pos + # caused by flipping the axis. + clp.ymin = math.floor( + (self.scale[1] * ymin) - math.ceil(self.origin_in_pixels[1])) + clp.ymax = math.floor( + (self.scale[1] * ymax) - math.floor(self.origin_in_pixels[1])) + + # Calculate width and height, rounded to the nearest pixel + clp.width = abs(clp.xmax - clp.xmin) + clp.height = abs(clp.ymax - clp.ymin) + + def __enter__(clp): + # Clip current context to primitive's bounding box + self.ctx.rectangle(clp.xmin, clp.ymin, clp.width, clp.height) + self.ctx.clip() + + def __exit__(clp, exc_type, exc_val, traceback): + # Reset context clip region + self.ctx.reset_clip() + + return Clip(primitive) + + def scale_point(self, point): + return tuple([coord * scale for coord, scale in zip(point, self.scale)]) diff --git a/gerber/render/excellon_backend.py b/gerber/render/excellon_backend.py new file mode 100644 index 0000000..765d68c --- /dev/null +++ b/gerber/render/excellon_backend.py @@ -0,0 +1,188 @@ + +from .render import GerberContext +from ..excellon import DrillSlot +from ..excellon_statements import * + +class ExcellonContext(GerberContext): + + MODE_DRILL = 1 + MODE_SLOT =2 + + def __init__(self, settings): + GerberContext.__init__(self) + + # Statements that we write + self.comments = [] + self.header = [] + self.tool_def = [] + 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, *args, **kwargs): + pass + + def paint_background(self): + pass + + def _render_line(self, line, color): + raise ValueError('Invalid Excellon object') + def _render_arc(self, arc, color): + raise ValueError('Invalid Excellon object') + + def _render_region(self, region, color): + raise ValueError('Invalid Excellon object') + + def _render_level_polarity(self, region): + raise ValueError('Invalid Excellon object') + + def _render_circle(self, circle, color): + raise ValueError('Invalid Excellon object') + + 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 diff --git a/gerber/render/render.py b/gerber/render/render.py new file mode 100644 index 0000000..580a7ea --- /dev/null +++ b/gerber/render/render.py @@ -0,0 +1,246 @@ +#! /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 ..primitives import * +from ..gerber_statements import (CommentStmt, UnknownStmt, EofStmt, ParamStmt, + CoordStmt, ApertureStmt, RegionModeStmt, + QuadrantModeStmt,) + + +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._background_color = (0.0, 0.0, 0.0) + self._drill_color = (0.0, 0.0, 0.0) + self._alpha = 1.0 + self._invert = False + self.ctx = None + + @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): + if not primitive: + return + + self.pre_render_primitive(primitive) + + color = self.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.color) + elif isinstance(primitive, Slot): + self._render_slot(primitive, self.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) + + self.post_render_primitive(primitive) + + def set_bounds(self, bounds, *args, **kwargs): + """Called by the renderer to set the extents of the file to render. + + Parameters + ---------- + bounds: Tuple[Tuple[float, float], Tuple[float, float]] + ( (x_min, x_max), (y_min, y_max) + """ + pass + + def paint_background(self): + pass + + def new_render_layer(self): + pass + + def flatten(self): + pass + + def pre_render_primitive(self, primitive): + """ + Called before rendering a primitive. Use the callback to perform some action before rendering + a primitive, for example adding a comment. + """ + return + + def post_render_primitive(self, primitive): + """ + Called after rendering a primitive. Use the callback to perform some action after rendering + a primitive + """ + 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_slot(self, primitive, color): + pass + + def _render_amgroup(self, primitive, color): + pass + + def _render_test_record(self, primitive, color): + pass + + +class RenderSettings(object): + def __init__(self, color=(0.0, 0.0, 0.0), alpha=1.0, invert=False, + mirror=False): + self.color = color + self.alpha = alpha + self.invert = invert + self.mirror = mirror diff --git a/gerber/render/rs274x_backend.py b/gerber/render/rs274x_backend.py new file mode 100644 index 0000000..c7af2ea --- /dev/null +++ b/gerber/render/rs274x_backend.py @@ -0,0 +1,510 @@ +"""Renders an in-memory Gerber file to statements which can be written to a string +""" +from copy import deepcopy + +try: + from cStringIO import StringIO +except(ImportError): + from io import StringIO + +from .render import GerberContext +from ..am_statements import * +from ..gerber_statements import * +from ..primitives import AMGroup, Arc, Circle, Line, Obround, Outline, Polygon, Rectangle + + +class AMGroupContext(object): + '''A special renderer to generate aperature macros from an AMGroup''' + + def __init__(self): + self.statements = [] + + def render(self, amgroup, name): + + if amgroup.stmt: + # We know the statement it was generated from, so use that to create the AMParamStmt + # It will give a much better result + + stmt = deepcopy(amgroup.stmt) + stmt.name = name + + return stmt + + else: + # Clone ourselves, then offset by the psotion so that + # our render doesn't have to consider offset. Just makes things simpler + 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) + elif isinstance(primitive, Circle): + self._render_circle(primitive) + elif isinstance(primitive, Rectangle): + self._render_rectangle(primitive) + elif isinstance(primitive, Line): + self._render_line(primitive) + elif isinstance(primitive, Polygon): + self._render_polygon(primitive) + else: + raise ValueError('amgroup') + + 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_circle(self, circle): + self.statements.append(AMCirclePrimitive.from_primitive(circle)) + + def _render_rectangle(self, rectangle): + self.statements.append(AMCenterLinePrimitive.from_primitive(rectangle)) + + def _render_line(self, line): + self.statements.append(AMVectorLinePrimitive.from_primitive(line)) + + def _render_outline(self, outline): + self.statements.append(AMOutlinePrimitive.from_primitive(outline)) + + def _render_polygon(self, polygon): + self.statements.append(AMPolygonPrimitive.from_primitive(polygon)) + + def _render_thermal(self, thermal): + pass + + +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 + + # Primarily for testing and comarison to files, should we write + # flashes as a single statement or a move plus flash? Set to true + # to do in a single statement. Normally this can be false + self.condensed_flash = True + + # When closing a region, force a D02 staement to close a region. + # This is normally not necessary because regions are closed with a G37 + # staement, but this will add an extra statement for doubly close + # the region + self.explicit_region_move_end = False + + self._next_dcode = 10 + self._rects = {} + self._circles = {} + self._obrounds = {} + self._polygons = {} + self._macros = {} + + self._i_none = 0 + self._j_none = 0 + + self.settings = settings + + self._start_header(settings) + + def _start_header(self, settings): + self.header.append(FSParamStmt.from_settings(settings)) + self.header.append(MOParamStmt.from_units(settings.units)) + + 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, *args, **kwargs): + 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, aperture.hole_diameter, aperture.hole_width, aperture.hole_height) + elif isinstance(aperture, Rectangle): + aper = self._get_rectangle(aperture.width, aperture.height) + elif isinstance(aperture, Obround): + aper = self._get_obround(aperture.width, aperture.height) + elif isinstance(aperture, AMGroup): + aper = self._get_amacro(aperture) + else: + raise NotImplementedError('Line with invalid aperture type') + + if aper.d != self._dcode: + self.body.append(ApertureStmt(aper.d)) + self._dcode = aper.d + + def pre_render_primitive(self, primitive): + + if hasattr(primitive, 'comment'): + self.body.append(CommentStmt(primitive.comment)) + + def _render_line(self, line, color, default_polarity='dark'): + + self._select_aperture(line.aperture) + + self._render_level_polarity(line, default_polarity) + + # 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 + + point = self._simplify_point(line.end) + + # In some files, we see a lot of duplicated ponts, so omit those + if point[0] != None or point[1] != None: + self.body.append(CoordStmt.line(func, self._simplify_point(line.end))) + self._pos = line.end + elif func: + self.body.append(CoordStmt.mode(func)) + + def _render_arc(self, arc, color, default_polarity='dark'): + + # 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, default_polarity) + + # 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: + + # Make programmatically generated primitives within a region with + # unset level polarity inherit the region's level polarity + if isinstance(p, Line): + self._render_line(p, color, default_polarity=region.level_polarity) + else: + self._render_arc(p, color, default_polarity=region.level_polarity) + + if self.explicit_region_move_end: + self.body.append(CoordStmt.move(None, None)) + + self.body.append(RegionModeStmt.off()) + + def _render_level_polarity(self, obj, default='dark'): + obj_polarity = obj.level_polarity if obj.level_polarity is not None else default + if obj_polarity != self._level_polarity: + self._level_polarity = obj_polarity + self.body.append(LPParamStmt('LP', obj_polarity)) + + def _render_flash(self, primitive, aperture): + + self._render_level_polarity(primitive) + + if aperture.d != self._dcode: + self.body.append(ApertureStmt(aperture.d)) + self._dcode = aperture.d + + if self.condensed_flash: + self.body.append(CoordStmt.flash(self._simplify_point(primitive.position))) + else: + self.body.append(CoordStmt.move(None, self._simplify_point(primitive.position))) + self.body.append(CoordStmt.flash(None)) + + self._pos = primitive.position + + def _get_circle(self, diameter, hole_diameter=None, hole_width=None, + hole_height=None, dcode = None): + '''Define a circlar aperture''' + + key = (diameter, hole_diameter, hole_width, hole_height) + aper = self._circles.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.circle(dcode, diameter, hole_diameter, hole_width, hole_height) + self._circles[(diameter, hole_diameter, hole_width, hole_height)] = aper + self.header.append(aper) + + return aper + + def _render_circle(self, circle, color): + + aper = self._get_circle(circle.diameter, circle.hole_diameter, circle.hole_width, circle.hole_height) + self._render_flash(circle, aper) + + def _get_rectangle(self, width, height, hole_diameter=None, hole_width=None, + hole_height=None, dcode = None): + '''Get a rectanglar aperture. If it isn't defined, create it''' + + key = (width, height, hole_diameter, hole_width, hole_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, hole_diameter, hole_width, hole_height) + self._rects[(width, height, hole_diameter, hole_width, hole_height)] = aper + self.header.append(aper) + + return aper + + def _render_rectangle(self, rectangle, color): + + aper = self._get_rectangle(rectangle.width, rectangle.height, + rectangle.hole_diameter, + rectangle.hole_width, rectangle.hole_height) + self._render_flash(rectangle, aper) + + def _get_obround(self, width, height, hole_diameter=None, hole_width=None, + hole_height=None, dcode = None): + + key = (width, height, hole_diameter, hole_width, hole_height) + aper = self._obrounds.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.obround(dcode, width, height, hole_diameter, hole_width, hole_height) + self._obrounds[key] = aper + self.header.append(aper) + + return aper + + def _render_obround(self, obround, color): + + aper = self._get_obround(obround.width, obround.height, + obround.hole_diameter, obround.hole_width, + obround.hole_height) + self._render_flash(obround, aper) + + def _render_polygon(self, polygon, color): + + aper = self._get_polygon(polygon.radius, polygon.sides, + polygon.rotation, polygon.hole_diameter, + polygon.hole_width, polygon.hole_height) + self._render_flash(polygon, aper) + + def _get_polygon(self, radius, num_vertices, rotation, hole_diameter=None, + hole_width=None, hole_height=None, dcode = None): + + key = (radius, num_vertices, rotation, hole_diameter, hole_width, hole_height) + aper = self._polygons.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.polygon(dcode, radius * 2, num_vertices, + rotation, hole_diameter, hole_width, + hole_height) + self._polygons[key] = aper + self.header.append(aper) + + return aper + + def _render_drill(self, drill, color): + raise ValueError('Drills are not valid in RS274X files') + + def _hash_amacro(self, amgroup): + '''Calculate a very quick hash code for deciding if we should even check AM groups for comparision''' + + # We always start with an X because this forms part of the name + # Basically, in some cases, the name might start with a C, R, etc. That can appear + # to conflict with normal aperture definitions. Technically, it shouldn't because normal + # aperture definitions should have a comma, but in some cases the commit is omitted + hash = 'X' + for primitive in amgroup.primitives: + + hash += primitive.__class__.__name__[0] + + bbox = primitive.bounding_box + hash += str((bbox[0][1] - bbox[0][0]) * 100000)[0:2] + hash += str((bbox[1][1] - bbox[1][0]) * 100000)[0:2] + + if hasattr(primitive, 'primitives'): + hash += str(len(primitive.primitives)) + + if isinstance(primitive, Rectangle): + hash += str(primitive.width * 1000000)[0:2] + hash += str(primitive.height * 1000000)[0:2] + elif isinstance(primitive, Circle): + hash += str(primitive.diameter * 1000000)[0:2] + + if len(hash) > 20: + # The hash might actually get quite complex, so stop before + # it gets too long + break + + 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 = None + macroinfo = self._macros.get(hash, None) + + if macroinfo: + + # We have a definition, but check that the groups actually are the same + for macro in macroinfo: + + # Macros should have positions, right? But if the macro is selected for non-flashes + # then it won't have a position. This is of course a bad gerber, but they do exist + if amgroup.position: + position = amgroup.position + else: + position = (0, 0) + + offset = (position[0] - macro[1].position[0], position[1] - macro[1].position[1]) + if amgroup.equivalent(macro[1], offset): + break + macro = None + + # Did we find one in the group0 + 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 + # If it didn't have a postition, set it to 0, 0 + if amgroup.position == None: + amgroup.position = (0, 0) + macro = (aperdef, amgroup) + + if macroinfo: + macroinfo.append(macro) + else: + self._macros[hash] = [macro] + + 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 new_render_layer(self): + # TODO Might need to implement this + pass + + def flatten(self): + # TODO Might need to implement this + pass + + def dump(self): + """Write the rendered file to a StringIO steam""" + statements = map(lambda stmt: stmt.to_gerber(self.settings), self.statements) + stream = StringIO() + for statement in statements: + stream.write(statement + '\n') + + return stream diff --git a/gerber/render/theme.py b/gerber/render/theme.py new file mode 100644 index 0000000..2f558a1 --- /dev/null +++ b/gerber/render/theme.py @@ -0,0 +1,112 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright 2013-2014 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. + + +from .render import RenderSettings + +COLORS = { + 'black': (0.0, 0.0, 0.0), + 'white': (1.0, 1.0, 1.0), + 'red': (1.0, 0.0, 0.0), + 'green': (0.0, 1.0, 0.0), + 'yellow': (1.0, 1.0, 0), + 'blue': (0.0, 0.0, 1.0), + 'fr-4': (0.290, 0.345, 0.0), + 'green soldermask': (0.0, 0.412, 0.278), + 'blue soldermask': (0.059, 0.478, 0.651), + 'red soldermask': (0.968, 0.169, 0.165), + 'black soldermask': (0.298, 0.275, 0.282), + 'purple soldermask': (0.2, 0.0, 0.334), + 'enig copper': (0.694, 0.533, 0.514), + 'hasl copper': (0.871, 0.851, 0.839) +} + + +SPECTRUM = [ + (0.804, 0.216, 0), + (0.78, 0.776, 0.251), + (0.545, 0.451, 0.333), + (0.545, 0.137, 0.137), + (0.329, 0.545, 0.329), + (0.133, 0.545, 0.133), + (0, 0.525, 0.545), + (0.227, 0.373, 0.804), +] + + +class Theme(object): + + def __init__(self, name=None, **kwargs): + self.name = 'Default' if name is None else name + self.background = kwargs.get('background', RenderSettings(COLORS['fr-4'])) + self.topsilk = kwargs.get('topsilk', RenderSettings(COLORS['white'])) + self.bottomsilk = kwargs.get('bottomsilk', RenderSettings(COLORS['white'], mirror=True)) + self.topmask = kwargs.get('topmask', RenderSettings(COLORS['green soldermask'], alpha=0.85, invert=True)) + self.bottommask = kwargs.get('bottommask', RenderSettings(COLORS['green soldermask'], alpha=0.85, invert=True, mirror=True)) + self.top = kwargs.get('top', RenderSettings(COLORS['hasl copper'])) + self.bottom = kwargs.get('bottom', RenderSettings(COLORS['hasl copper'], mirror=True)) + self.drill = kwargs.get('drill', RenderSettings(COLORS['black'])) + self.ipc_netlist = kwargs.get('ipc_netlist', RenderSettings(COLORS['red'])) + self._internal = kwargs.get('internal', [RenderSettings(x) for x in SPECTRUM]) + self._internal_gen = None + + def __getitem__(self, key): + return getattr(self, key) + + @property + def internal(self): + if not self._internal_gen: + self._internal_gen = self._internal_gen_func() + return next(self._internal_gen) + + def _internal_gen_func(self): + for setting in self._internal: + yield setting + + def get(self, key, noneval=None): + val = getattr(self, key, None) + return val if val is not None else noneval + + +THEMES = { + 'default': Theme(), + 'OSH Park': Theme(name='OSH Park', + background=RenderSettings(COLORS['purple soldermask']), + top=RenderSettings(COLORS['enig copper']), + bottom=RenderSettings(COLORS['enig copper'], mirror=True), + topmask=RenderSettings(COLORS['purple soldermask'], alpha=0.85, invert=True), + bottommask=RenderSettings(COLORS['purple soldermask'], alpha=0.85, invert=True, mirror=True), + topsilk=RenderSettings(COLORS['white'], alpha=0.8), + bottomsilk=RenderSettings(COLORS['white'], alpha=0.8, mirror=True)), + + 'Blue': Theme(name='Blue', + topmask=RenderSettings(COLORS['blue soldermask'], alpha=0.8, invert=True), + bottommask=RenderSettings(COLORS['blue soldermask'], alpha=0.8, invert=True)), + + 'Transparent Copper': Theme(name='Transparent', + background=RenderSettings((0.9, 0.9, 0.9)), + top=RenderSettings(COLORS['red'], alpha=0.5), + bottom=RenderSettings(COLORS['blue'], alpha=0.5), + drill=RenderSettings((0.3, 0.3, 0.3))), + + 'Transparent Multilayer': Theme(name='Transparent Multilayer', + background=RenderSettings((0, 0, 0)), + top=RenderSettings(SPECTRUM[0], alpha=0.8), + bottom=RenderSettings(SPECTRUM[-1], alpha=0.8), + drill=RenderSettings((0.3, 0.3, 0.3)), + internal=[RenderSettings(x, alpha=0.5) for x in SPECTRUM[1:-1]]), +} |