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-rw-r--r--gerber/cam.py25
-rwxr-xr-xgerber/excellon.py38
-rw-r--r--gerber/gerber_statements.py3
-rw-r--r--gerber/layers.py (renamed from gerber/layer_names.py)13
-rw-r--r--gerber/primitives.py67
-rw-r--r--gerber/render/render.py418
-rw-r--r--gerber/render/svgwrite_backend.py305
-rw-r--r--gerber/rs274x.py189
8 files changed, 408 insertions, 650 deletions
diff --git a/gerber/cam.py b/gerber/cam.py
index e7a49d1..4c19588 100644
--- a/gerber/cam.py
+++ b/gerber/cam.py
@@ -70,6 +70,9 @@ class CamFile(object):
settings : FileSettings
The current file configuration.
+ primitives : iterable
+ List of primitives in the file.
+
filename : string
Name of the file that this CamFile represents.
@@ -95,8 +98,8 @@ class CamFile(object):
decimal digits)
"""
- def __init__(self, statements=None, settings=None, filename=None,
- layer_name=None):
+ def __init__(self, statements=None, settings=None, primitives=None,
+ filename=None, layer_name=None):
if settings is not None:
self.notation = settings['notation']
self.units = settings['units']
@@ -108,6 +111,7 @@ class CamFile(object):
self.zero_suppression = 'trailing'
self.format = (2, 5)
self.statements = statements if statements is not None else []
+ self.primitives = primitives
self.filename = filename
self.layer_name = layer_name
@@ -122,3 +126,20 @@ class CamFile(object):
"""
return FileSettings(self.notation, self.units, self.zero_suppression,
self.format)
+
+ def render(self, ctx, filename=None):
+ """ Generate image of layer.
+
+ Parameters
+ ----------
+ ctx : :class:`GerberContext`
+ GerberContext subclass used for rendering the image
+
+ filename : string <optional>
+ If provided, save the rendered image to `filename`
+ """
+ ctx.set_bounds(self.bounds)
+ for p in self.primitives:
+ ctx.render(p)
+ if filename is not None:
+ ctx.dump(filename)
diff --git a/gerber/excellon.py b/gerber/excellon.py
index 13aacc6..ca2f7c8 100755
--- a/gerber/excellon.py
+++ b/gerber/excellon.py
@@ -25,7 +25,7 @@ This module provides Excellon file classes and parsing utilities
from .excellon_statements import *
from .cam import CamFile, FileSettings
-
+from .primitives import Drill
import math
def read(filename):
@@ -74,30 +74,33 @@ class ExcellonFile(CamFile):
"""
def __init__(self, statements, tools, hits, settings, filename=None):
- super(ExcellonFile, self).__init__(statements, settings, filename)
+ super(ExcellonFile, self).__init__(statements=statements,
+ settings=settings,
+ filename=filename)
self.tools = tools
self.hits = hits
+ self.primitives = [Drill(position, tool.diameter)
+ for tool, position in self.hits]
+
+ @property
+ def bounds(self):
+ xmin = ymin = 100000000000
+ xmax = ymax = -100000000000
+ for tool, position in self.hits:
+ radius = tool.diameter / 2.
+ x = position[0]
+ y = position[1]
+ xmin = min(x - radius, xmin)
+ xmax = max(x + radius, xmax)
+ ymin = min(y - radius, ymin)
+ ymax = max(y + radius, ymax)
+ return ((xmin, xmax), (ymin, ymax))
def report(self):
""" Print drill report
"""
pass
- def render(self, ctx, filename=None):
- """ Generate image of file
-
- Parameters
- ----------
- ctx : :class:`gerber.render.GerberContext`
- GerberContext subclass used for rendering the image
-
- filename : string <optional>
- If provided, the rendered image will be saved to `filename`
- """
- for tool, pos in self.hits:
- ctx.drill(pos[0], pos[1], tool.diameter)
- if filename is not None:
- ctx.dump(filename)
def write(self, filename):
with open(filename, 'w') as f:
@@ -105,6 +108,7 @@ class ExcellonFile(CamFile):
f.write(statement.to_excellon() + '\n')
+
class ExcellonParser(object):
""" Excellon File Parser
diff --git a/gerber/gerber_statements.py b/gerber/gerber_statements.py
index 218074f..6f7b73d 100644
--- a/gerber/gerber_statements.py
+++ b/gerber/gerber_statements.py
@@ -12,7 +12,8 @@ from .utils import parse_gerber_value, write_gerber_value, decimal_string
__all__ = ['FSParamStmt', 'MOParamStmt', 'IPParamStmt', 'OFParamStmt',
'LPParamStmt', 'ADParamStmt', 'AMParamStmt', 'INParamStmt',
'LNParamStmt', 'CoordStmt', 'ApertureStmt', 'CommentStmt',
- 'EofStmt', 'QuadrantModeStmt', 'RegionModeStmt', 'UnknownStmt']
+ 'EofStmt', 'QuadrantModeStmt', 'RegionModeStmt', 'UnknownStmt',
+ 'ParamStmt']
class Statement(object):
diff --git a/gerber/layer_names.py b/gerber/layers.py
index 372c40d..b10cf16 100644
--- a/gerber/layer_names.py
+++ b/gerber/layers.py
@@ -24,21 +24,22 @@ bottom_coppper_name = ['art02', 'bottom', 'bot', 'GBL', 'layer2', 'soldsold', ]
internal_layer_ext = ['in', 'gt1', 'gt2', 'gt3', 'gt4', 'gt5', 'gt6', 'g1',
'g2', 'g3', 'g4', 'g5', 'g6', ]
internal_layer_name = ['art', 'internal']
+
power_plane_name = ['pgp', 'pwr', ]
ground_plane_name = ['gp1', 'gp2', 'gp3', 'gp4', 'gt5', 'gp6', 'gnd',
'ground', ]
-top_silk_ext = ['gto', 'ts', 'skt', ]
-top_silk_name = ['sst01', 'topsilk, 'silk', 'slk', 'sst', ]
+top_silk_ext = ['gto', 'sst', 'plc', 'ts', 'skt', ]
+top_silk_name = ['sst01', 'topsilk', 'silk', 'slk', 'sst', ]
-bottom_silk_ext = ['gbo, 'bs', 'skb', ]
+bottom_silk_ext = ['gbo', 'ssb', 'pls', 'bs', 'skb', ]
bottom_silk_name = ['sst', 'bsilk', 'ssb', 'botsilk', ]
-top_mask_ext = ['gts', 'tmk', 'smt', 'tr', ]
+top_mask_ext = ['gts', 'stc', 'tmk', 'smt', 'tr', ]
top_mask_name = ['sm01', 'cmask', 'tmask', 'mask1', 'maskcom', 'topmask',
'mst', ]
-bottom_mask_ext = ['gbs', bmk', 'smb', 'br', ]
+bottom_mask_ext = ['gbs', 'sts', 'bmk', 'smb', 'br', ]
bottom_mask_name = ['sm', 'bmask', 'mask2', 'masksold', 'botmask', 'msb', ]
top_paste_ext = ['gtp', 'tm']
@@ -49,3 +50,5 @@ bottom_paste_name = ['sp02', 'botpaste', 'psb']
board_outline_ext = ['gko']
board_outline_name = ['BDR', 'border', 'out', ]
+
+
diff --git a/gerber/primitives.py b/gerber/primitives.py
index 366c397..670b758 100644
--- a/gerber/primitives.py
+++ b/gerber/primitives.py
@@ -19,11 +19,15 @@ from operator import sub
class Primitive(object):
+
+ def __init__(self, level_polarity='dark'):
+ self.level_polarity = level_polarity
+
def bounding_box(self):
""" Calculate bounding box
will be helpful for sweep & prune during DRC clearance checks.
-
+
Return ((min x, max x), (min y, max y))
"""
pass
@@ -32,16 +36,19 @@ class Primitive(object):
class Line(Primitive):
"""
"""
- def __init__(self, start, end, width):
+ def __init__(self, start, end, width, level_polarity='dark'):
+ super(Line, self).__init__(level_polarity)
self.start = start
self.end = end
self.width = width
-
+
@property
def angle(self):
- dx, dy = tuple(map(sub, end, start))
- angle = degrees(math.tan(dy/dx))
+ delta_x, delta_y = tuple(map(sub, end, start))
+ angle = degrees(math.tan(delta_y/delta_x))
+ return angle
+ @property
def bounding_box(self):
width_2 = self.width / 2.
min_x = min(self.start[0], self.end[0]) - width_2
@@ -54,7 +61,8 @@ class Line(Primitive):
class Arc(Primitive):
"""
"""
- def __init__(self, start, end, center, direction, width):
+ def __init__(self, start, end, center, direction, width, level_polarity='dark'):
+ super(Arc, self).__init__(level_polarity)
self.start = start
self.end = end
self.center = center
@@ -71,17 +79,23 @@ class Arc(Primitive):
dy, dx = map(sub, self.end, self.center)
return math.atan2(dy, dx)
+ @property
def bounding_box(self):
pass
class Circle(Primitive):
"""
"""
- def __init__(self, position, diameter):
+ def __init__(self, position, diameter, level_polarity='dark'):
+ super(Circle, self).__init__(level_polarity)
self.position = position
self.diameter = diameter
- self.radius = diameter / 2.
+ @property
+ def radius(self):
+ return self.diameter / 2.
+
+ @property
def bounding_box(self):
min_x = self.position[0] - self.radius
max_x = self.position[0] + self.radius
@@ -89,11 +103,16 @@ class Circle(Primitive):
max_y = self.position[1] + self.radius
return ((min_x, max_x), (min_y, max_y))
+ @property
+ def stroke_width(self):
+ return self.diameter
+
class Rectangle(Primitive):
"""
"""
- def __init__(self, position, width, height):
+ def __init__(self, position, width, height, level_polarity='dark'):
+ super(Rectangle, self).__init__(level_polarity)
self.position = position
self.width = width
self.height = height
@@ -108,6 +127,7 @@ class Rectangle(Primitive):
return (self.position[0] + (self.width / 2.),
self.position[1] + (self.height / 2.))
+ @property
def bounding_box(self):
min_x = self.lower_left[0]
max_x = self.upper_right[0]
@@ -115,11 +135,16 @@ class Rectangle(Primitive):
max_y = self.upper_right[1]
return ((min_x, max_x), (min_y, max_y))
+ @property
+ def stroke_width(self):
+ return max((self.width, self.height))
+
class Obround(Primitive):
"""
"""
- def __init__(self, position, width, height)
+ def __init__(self, position, width, height, level_polarity='dark'):
+ super(Obround, self).__init__(level_polarity)
self.position = position
self.width = width
self.height = height
@@ -138,6 +163,7 @@ class Obround(Primitive):
return (self.position[0] + (self.width / 2.),
self.position[1] + (self.height / 2.))
+ @property
def bounding_box(self):
min_x = self.lower_left[0]
max_x = self.upper_right[0]
@@ -149,11 +175,13 @@ class Obround(Primitive):
class Polygon(Primitive):
"""
"""
- def __init__(self, position, sides, radius):
+ def __init__(self, position, sides, radius, level_polarity='dark'):
+ super(Polygon, self).__init__(level_polarity)
self.position = position
self.sides = sides
self.radius = radius
-
+
+ @property
def bounding_box(self):
min_x = self.position[0] - self.radius
max_x = self.position[0] + self.radius
@@ -165,9 +193,11 @@ class Polygon(Primitive):
class Region(Primitive):
"""
"""
- def __init__(self, points):
+ def __init__(self, points, level_polarity='dark'):
+ super(Region, self).__init__(level_polarity)
self.points = points
-
+
+ @property
def bounding_box(self):
x_list, y_list = zip(*self.points)
min_x = min(x_list)
@@ -181,10 +211,15 @@ class Drill(Primitive):
"""
"""
def __init__(self, position, diameter):
+ super(Drill, self).__init__('dark')
self.position = position
self.diameter = diameter
- self.radius = diameter / 2.
-
+
+ @property
+ def radius(self):
+ return self.diameter / 2.
+
+ @property
def bounding_box(self):
min_x = self.position[0] - self.radius
max_x = self.position[0] + self.radius
diff --git a/gerber/render/render.py b/gerber/render/render.py
index f7e4485..f5c58d8 100644
--- a/gerber/render/render.py
+++ b/gerber/render/render.py
@@ -28,6 +28,7 @@ from ..gerber_statements import (CommentStmt, UnknownStmt, EofStmt, ParamStmt,
QuadrantModeStmt,
)
+from ..primitives import *
class GerberContext(object):
""" Gerber rendering context base class
@@ -39,40 +40,8 @@ class GerberContext(object):
Attributes
----------
- settings : FileSettings (dict-like)
- Gerber file settings
-
- x : float
- X-coordinate of the "photoplotter" head.
-
- y : float
- Y-coordinate of the "photoplotter" head
-
- aperture : int
- The aperture that is currently in use
-
- interpolation : str
- Current interpolation mode. may be 'linear' or 'arc'
-
- direction : string
- Current arc direction. May be either 'clockwise' or 'counterclockwise'
-
- image_polarity : string
- Current image polarity setting. May be 'positive' or 'negative'
-
- level_polarity : string
- Level polarity. May be 'dark' or 'clear'. Dark polarity indicates the
- existance of copper/silkscreen/etc. in the exposed area, whereas clear
- polarity indicates material should be removed from the exposed area.
-
- region_mode : string
- Region mode. May be 'on' or 'off'. When region mode is set to 'on' the
- following "contours" define the outline of a region. When region mode
- is subsequently turned 'off', the defined area is filled.
-
- quadrant_mode : string
- Quadrant mode. May be 'single-quadrant' or 'multi-quadrant'. Defines
- how arcs are specified.
+ units : string
+ Measurement units
color : tuple (<float>, <float>, <float>)
Color used for rendering as a tuple of normalized (red, green, blue) values.
@@ -87,73 +56,14 @@ class GerberContext(object):
alpha : float
Rendering opacity. Between 0.0 (transparent) and 1.0 (opaque.)
"""
- def __init__(self):
- self.settings = {}
- self.x = 0
- self.y = 0
-
- self.aperture = 0
- self.interpolation = 'linear'
- self.direction = 'clockwise'
- self.image_polarity = 'positive'
- self.level_polarity = 'dark'
- self.region_mode = 'off'
- self.quadrant_mode = 'multi-quadrant'
- self.step_and_repeat = (1, 1, 0, 0)
+ 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
-
- def set_format(self, settings):
- """ Set source file format.
-
- Parameters
- ----------
- settings : FileSettings instance or dict-like
- Gerber file settings used in source file.
- """
- self.settings = settings
-
- def set_coord_format(self, zero_suppression, decimal_format, notation):
- """ Set coordinate format used in source gerber file
- Parameters
- ----------
- zero_suppression : string
- Zero suppression mode. may be 'leading' or 'trailling'
-
- decimal_format : tuple (<int>, <int>)
- Decimal precision format specified as (integer digits, decimal digits)
-
- notation : string
- Notation mode. 'absolute' or 'incremental'
- """
- if zero_suppression not in ('leading', 'trailling'):
- raise ValueError('Zero suppression must be "leading" or "trailing"')
- self.settings['zero_suppression'] = zero_suppression
- self.settings['format'] = decimal_format
- self.settings['notation'] = notation
-
- def set_coord_notation(self, notation):
- """ Set context notation mode
-
- Parameters
- ----------
- notation : string
- Notation mode. may be 'absolute' or 'incremental'
-
- Raises
- ------
- ValueError
- If `notation` is not either "absolute" or "incremental"
-
- """
- if notation not in ('absolute', 'incremental'):
- raise ValueError('Notation may be "absolute" or "incremental"')
- self.settings['notation'] = notation
-
- def set_coord_unit(self, unit):
+ def set_units(self, units):
""" Set context measurement units
Parameters
@@ -166,70 +76,9 @@ class GerberContext(object):
ValueError
If `unit` is not 'inch' or 'metric'
"""
- if unit not in ('inch', 'metric'):
- raise ValueError('Unit may be "inch" or "metric"')
- self.settings['units'] = unit
-
- def set_image_polarity(self, polarity):
- """ Set context image polarity
-
- Parameters
- ----------
- polarity : string
- Image polarity. May be "positive" or "negative"
-
- Raises
- ------
- ValueError
- If polarity is not 'positive' or 'negative'
- """
- if polarity not in ('positive', 'negative'):
- raise ValueError('Polarity may be "positive" or "negative"')
- self.image_polarity = polarity
-
- def set_level_polarity(self, polarity):
- """ Set context level polarity
-
- Parameters
- ----------
- polarity : string
- Level polarity. May be "dark" or "clear"
-
- Raises
- ------
- ValueError
- If polarity is not 'dark' or 'clear'
- """
- if polarity not in ('dark', 'clear'):
- raise ValueError('Polarity may be "dark" or "clear"')
- self.level_polarity = polarity
-
- def set_interpolation(self, interpolation):
- """ Set arc interpolation mode
-
- Parameters
- ----------
- interpolation : string
- Interpolation mode. May be 'linear' or 'arc'
-
- Raises
- ------
- ValueError
- If `interpolation` is not 'linear' or 'arc'
- """
- if interpolation not in ('linear', 'arc'):
- raise ValueError('Interpolation may be "linear" or "arc"')
- self.interpolation = interpolation
-
- def set_aperture(self, d):
- """ Set active aperture
-
- Parameters
- ----------
- aperture : int
- Aperture number to activate.
- """
- self.aperture = d
+ if units not in ('inch', 'metric'):
+ raise ValueError('Units may be "inch" or "metric"')
+ self.units = units
def set_color(self, color):
""" Set rendering color.
@@ -277,238 +126,49 @@ class GerberContext(object):
"""
self.alpha = alpha
- def resolve(self, x, y):
- """ Resolve missing x or y coordinates in a coordinate command.
-
- Replace missing x or y values with the current x or y position. This
- is the default method for handling coordinate pairs pulled from gerber
- file statments, as a move/line/arc involving a change in only one axis
- will drop the redundant axis coordinate to reduce file size.
-
- Parameters
- ----------
- x : float
- X-coordinate. If `None`, will be replaced with current
- "photoplotter" head x-coordinate
-
- y : float
- Y-coordinate. If `None`, will be replaced with current
- "photoplotter" head y-coordinate
-
- Returns
- -------
- coordinates : tuple (<float>, <float>)
- Coordinates in absolute notation
- """
- x = x if x is not None else self.x
- y = y if y is not None else self.y
- return x, y
-
- def define_aperture(self, d, shape, modifiers):
- pass
-
- def move(self, x, y, resolve=True):
- """ Lights-off move.
-
- Move the "photoplotter" head to (x, y) without drawing a line. If x or
- y is `None`, remain at the same point in that axis.
-
- Parameters
- -----------
- x : float
- X-coordinate to move to. If x is `None`, do not move in the X
- direction
-
- y : float
- Y-coordinate to move to. if y is `None`, do not move in the Y
- direction
-
- resolve : bool
- If resolve is `True` the context will replace missing x or y
- coordinates with the current plotter head position. This is the
- default behavior.
- """
- if resolve:
- self.x, self.y = self.resolve(x, y)
+ 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(Polygon, color)
+ elif isinstance(primitive, Drill):
+ self._render_drill(primitive, self.drill_color)
else:
- self.x, self.y = x, y
-
- def stroke(self, x, y, i, j):
- """ Lights-on move. (draws a line or arc)
-
- The stroke method is called when a Lights-on move statement is
- encountered. This will call the `line` or `arc` method as necessary
- based on the move statement's parameters. The `stroke` method should
- be overridden in `GerberContext` subclasses.
-
- Parameters
- ----------
- x : float
- X coordinate of target position
-
- y : float
- Y coordinate of target position
-
- i : float
- Offset in X-direction from current position of arc center.
+ return
- j : float
- Offset in Y-direction from current position of arc center.
- """
+ def _render_line(self, primitive, color):
pass
- def line(self, x, y):
- """ Draw a line
-
- Draws a line from the current position to (x, y) using the currently
- selected aperture. The `line` method should be overridden in
- `GerberContext` subclasses.
-
- Parameters
- ----------
- x : float
- X coordinate of target position
-
- y : float
- Y coordinate of target position
- """
+ def _render_arc(self, primitive, color):
pass
- def arc(self, x, y, i, j):
- """ Draw an arc
-
- Draw an arc from the current position to (x, y) using the currently
- selected aperture. `i` and `j` specify the offset from the starting
- position to the center of the arc.The `arc` method should be
- overridden in `GerberContext` subclasses.
-
- Parameters
- ----------
- x : float
- X coordinate of target position
-
- y : float
- Y coordinate of target position
-
- i : float
- Offset in X-direction from current position of arc center.
-
- j : float
- Offset in Y-direction from current position of arc center.
- """
+ def _render_region(self, primitive, color):
pass
- def flash(self, x, y):
- """ Flash the current aperture
-
- Draw a filled shape defined by the currently selected aperture.
-
- Parameters
- ----------
- x : float
- X coordinate of the position at which to flash
-
- y : float
- Y coordinate of the position at which to flash
- """
+ def _render_circle(self, primitive, color):
pass
- def drill(self, x, y, diameter):
- """ Draw a drill hit
-
- Draw a filled circle representing a drill hit at the specified
- position and with the specified diameter.
-
- Parameters
- ----------
- x : float
- X coordinate of the drill hit
-
- y : float
- Y coordinate of the drill hit
-
- diameter : float
- Finished hole diameter to draw.
- """
+ def _render_rectangle(self, primitive, color):
pass
- def region_contour(self, x, y):
- pass
-
- def fill_region(self):
+ def _render_obround(self, primitive, color):
pass
-
- def evaluate(self, stmt):
- """ Evaluate Gerber statement and update image accordingly.
-
- This method is called once for each statement in a Gerber/Excellon
- file when the file's `render` method is called. The evaluate method
- should forward the statement on to the relevant handling method based
- on the statement type.
-
- Parameters
- ----------
- statement : Statement
- Gerber/Excellon statement to evaluate.
- """
- if isinstance(stmt, (CommentStmt, UnknownStmt, EofStmt)):
- return
-
- elif isinstance(stmt, ParamStmt):
- self._evaluate_param(stmt)
-
- elif isinstance(stmt, CoordStmt):
- self._evaluate_coord(stmt)
-
- elif isinstance(stmt, ApertureStmt):
- self._evaluate_aperture(stmt)
-
- elif isinstance(stmt, (RegionModeStmt, QuadrantModeStmt)):
- self._evaluate_mode(stmt)
+ def _render_polygon(self, primitive, color):
+ pass
- else:
- raise Exception("Invalid statement to evaluate")
-
- def _evaluate_mode(self, stmt):
- if stmt.type == 'RegionMode':
- if self.region_mode == 'on' and stmt.mode == 'off':
- self.fill_region()
- self.region_mode = stmt.mode
- elif stmt.type == 'QuadrantMode':
- self.quadrant_mode = stmt.mode
-
- def _evaluate_param(self, stmt):
- if stmt.param == "FS":
- self.set_coord_format(stmt.zero_suppression, stmt.format,
- stmt.notation)
- self.set_coord_notation(stmt.notation)
- elif stmt.param == "MO":
- self.set_coord_unit(stmt.mode)
- elif stmt.param == "IP":
- self.set_image_polarity(stmt.ip)
- elif stmt.param == "LP":
- self.set_level_polarity(stmt.lp)
- elif stmt.param == "AD":
- self.define_aperture(stmt.d, stmt.shape, stmt.modifiers)
-
- def _evaluate_coord(self, stmt):
- if stmt.function in ("G01", "G1"):
- self.set_interpolation('linear')
- elif stmt.function in ('G02', 'G2', 'G03', 'G3'):
- self.set_interpolation('arc')
- self.direction = ('clockwise' if stmt.function in ('G02', 'G2')
- else 'counterclockwise')
- if stmt.op == "D01":
- if self.region_mode == 'on':
- self.region_contour(stmt.x, stmt.y)
- else:
- self.stroke(stmt.x, stmt.y, stmt.i, stmt.j)
- elif stmt.op == "D02":
- self.move(stmt.x, stmt.y)
- elif stmt.op == "D03":
- self.flash(stmt.x, stmt.y)
-
- def _evaluate_aperture(self, stmt):
- self.set_aperture(stmt.d)
+ def _render_drill(self, primitive, color):
+ pass
diff --git a/gerber/render/svgwrite_backend.py b/gerber/render/svgwrite_backend.py
index 15d7bd3..d9456a5 100644
--- a/gerber/render/svgwrite_backend.py
+++ b/gerber/render/svgwrite_backend.py
@@ -17,214 +17,139 @@
# limitations under the License.
from .render import GerberContext
-from .apertures import Circle, Rect, Obround, Polygon
+from operator import mul
import svgwrite
SCALE = 300
-def convert_color(color):
+def svg_color(color):
color = tuple([int(ch * 255) for ch in color])
return 'rgb(%d, %d, %d)' % color
-class SvgCircle(Circle):
- def line(self, ctx, x, y, color='rgb(184, 115, 51)', alpha=1.0):
- aline = ctx.dwg.line(start=(ctx.x * SCALE, -ctx.y * SCALE),
- end=(x * SCALE, -y * SCALE),
- stroke=color,
- stroke_width=SCALE * self.diameter,
- stroke_linecap="round")
- aline.stroke(opacity=alpha)
- return aline
-
- def arc(self, ctx, x, y, i, j, direction, color='rgb(184, 115, 51)', alpha=1.0):
- pass
-
- def flash(self, ctx, x, y, color='rgb(184, 115, 51)', alpha=1.0):
- circle = ctx.dwg.circle(center=(x * SCALE, -y * SCALE),
- r = SCALE * (self.diameter / 2.0),
- fill=color)
- circle.fill(opacity=alpha)
- return [circle, ]
-
-
-class SvgRect(Rect):
- def line(self, ctx, x, y, color='rgb(184, 115, 51)', alpha=1.0):
- aline = ctx.dwg.line(start=(ctx.x * SCALE, -ctx.y * SCALE),
- end=(x * SCALE, -y * SCALE),
- stroke=color, stroke_width=2,
- stroke_linecap="butt")
- aline.stroke(opacity=alpha)
- return aline
-
- def flash(self, ctx, x, y, color='rgb(184, 115, 51)', alpha=1.0):
- xsize, ysize = self.size
- rectangle = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2)),
- -SCALE * (y + (ysize / 2))),
- size=(SCALE * xsize, SCALE * ysize),
- fill=color)
- rectangle.fill(opacity=alpha)
- return [rectangle, ]
-
-
-class SvgObround(Obround):
- def line(self, ctx, x, y, color='rgb(184, 115, 51)', alpha=1.0):
- pass
-
- def flash(self, ctx, x, y, color='rgb(184, 115, 51)', alpha=1.0):
- xsize, ysize = self.size
-
- # horizontal obround
- if xsize == ysize:
- circle = ctx.dwg.circle(center=(x * SCALE, -y * SCALE),
- r = SCALE * (x / 2.0),
- fill=color)
- circle.fill(opacity=alpha)
- return [circle, ]
- if xsize > ysize:
- rectx = xsize - ysize
- recty = ysize
- lcircle = ctx.dwg.circle(center=((x - (rectx / 2.0)) * SCALE,
- -y * SCALE),
- r = SCALE * (ysize / 2.0),
- fill=color)
-
- rcircle = ctx.dwg.circle(center=((x + (rectx / 2.0)) * SCALE,
- -y * SCALE),
- r = SCALE * (ysize / 2.0),
- fill=color)
-
- rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)),
- -SCALE * (y + (ysize / 2.))),
- size=(SCALE * xsize, SCALE * ysize),
- fill=color)
- lcircle.fill(opacity=alpha)
- rcircle.fill(opacity=alpha)
- rect.fill(opacity=alpha)
- return [lcircle, rcircle, rect, ]
-
- # Vertical obround
- else:
- rectx = xsize
- recty = ysize - xsize
- lcircle = ctx.dwg.circle(center=(x * SCALE,
- (y - (recty / 2.)) * -SCALE),
- r = SCALE * (xsize / 2.),
- fill=color)
-
- ucircle = ctx.dwg.circle(center=(x * SCALE,
- (y + (recty / 2.)) * -SCALE),
- r = SCALE * (xsize / 2.),
- fill=color)
-
- rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)),
- -SCALE * (y + (ysize / 2.))),
- size=(SCALE * xsize, SCALE * ysize),
- fill=color)
- lcircle.fill(opacity=alpha)
- ucircle.fill(opacity=alpha)
- rect.fill(opacity=alpha)
- return [lcircle, ucircle, rect, ]
-
class GerberSvgContext(GerberContext):
def __init__(self):
GerberContext.__init__(self)
-
- self.apertures = {}
+ self.scale = (SCALE, -SCALE)
self.dwg = svgwrite.Drawing()
- self.dwg.transform = 'scale 1 -1'
self.background = False
- self.region_path = None
+
+ def dump(self, filename):
+ self.dwg.saveas(filename)
def set_bounds(self, bounds):
xbounds, ybounds = bounds
- size = (SCALE * (xbounds[1] - xbounds[0]), SCALE * (ybounds[1] - ybounds[0]))
+ size = (SCALE * (xbounds[1] - xbounds[0]),
+ SCALE * (ybounds[1] - ybounds[0]))
if not self.background:
- self.dwg = svgwrite.Drawing(viewBox='%f, %f, %f, %f' % (SCALE*xbounds[0], -SCALE*ybounds[1],size[0], size[1]))
- self.dwg.add(self.dwg.rect(insert=(SCALE * xbounds[0],
- -SCALE * ybounds[1]),
- size=size, fill=convert_color(self.background_color)))
+ vbox = '%f, %f, %f, %f' % (SCALE * xbounds[0], -SCALE * ybounds[1],
+ size[0], size[1])
+ self.dwg = svgwrite.Drawing(viewBox=vbox)
+ rect = self.dwg.rect(insert=(SCALE * xbounds[0],
+ -SCALE * ybounds[1]),
+ size=size,
+ fill=svg_color(self.background_color))
+ self.dwg.add(rect)
self.background = True
- def define_aperture(self, d, shape, modifiers):
- aperture = None
- if shape == 'C':
- aperture = SvgCircle(diameter=float(modifiers[0][0]))
- elif shape == 'R':
- aperture = SvgRect(size=modifiers[0][0:2])
- elif shape == 'O':
- aperture = SvgObround(size=modifiers[0][0:2])
- self.apertures[d] = aperture
-
- def stroke(self, x, y, i, j):
- super(GerberSvgContext, self).stroke(x, y, i, j)
-
- if self.interpolation == 'linear':
- self.line(x, y)
- elif self.interpolation == 'arc':
- self.arc(x, y, i, j)
-
- def line(self, x, y):
- super(GerberSvgContext, self).line(x, y)
- x, y = self.resolve(x, y)
- ap = self.apertures.get(self.aperture, None)
- if ap is None:
- return
- color = (convert_color(self.color) if self.level_polarity == 'dark'
- else convert_color(self.background_color))
- alpha = self.alpha if self.level_polarity == 'dark' else 1.0
- self.dwg.add(ap.line(self, x, y, color, alpha))
- self.move(x, y, resolve=False)
-
- def arc(self, x, y, i, j):
- super(GerberSvgContext, self).arc(x, y, i, j)
- x, y = self.resolve(x, y)
- ap = self.apertures.get(self.aperture, None)
- if ap is None:
- return
- #self.dwg.add(ap.arc(self, x, y, i, j, self.direction,
- # convert_color(self.color), self.alpha))
- self.move(x, y, resolve=False)
-
- def flash(self, x, y):
- super(GerberSvgContext, self).flash(x, y)
- x, y = self.resolve(x, y)
- ap = self.apertures.get(self.aperture, None)
- if ap is None:
- return
-
- color = (convert_color(self.color) if self.level_polarity == 'dark'
- else convert_color(self.background_color))
- alpha = self.alpha if self.level_polarity == 'dark' else 1.0
- for shape in ap.flash(self, x, y, color, alpha):
- self.dwg.add(shape)
- self.move(x, y, resolve=False)
-
- def drill(self, x, y, diameter):
- hit = self.dwg.circle(center=(x*SCALE, -y*SCALE),
- r=SCALE*(diameter/2.0),
- fill=convert_color(self.drill_color))
- #hit.fill(opacity=self.alpha)
- self.dwg.add(hit)
-
- def region_contour(self, x, y):
- super(GerberSvgContext, self).region_contour(x, y)
- x, y = self.resolve(x, y)
- color = (convert_color(self.color) if self.level_polarity == 'dark'
- else convert_color(self.background_color))
- alpha = self.alpha if self.level_polarity == 'dark' else 1.0
- if self.region_path is None:
- self.region_path = self.dwg.path(d = 'M %f, %f' %
- (self.x*SCALE, -self.y*SCALE),
- fill = color, stroke = 'none')
- self.region_path.fill(opacity=alpha)
- self.region_path.push('L %f, %f' % (x*SCALE, -y*SCALE))
- self.move(x, y, resolve=False)
-
- def fill_region(self):
- self.dwg.add(self.region_path)
- self.region_path = None
+ def _render_line(self, line, color):
+ start = map(mul, line.start, self.scale)
+ end = map(mul, line.end, self.scale)
+ aline = self.dwg.line(start=start, end=end,
+ stroke=svg_color(color),
+ stroke_width=SCALE * line.width,
+ stroke_linecap='round')
+ aline.stroke(opacity=self.alpha)
+ self.dwg.add(aline)
+
+ def _render_region(self, region, color):
+ points = [tuple(map(mul, point, self.scale)) for point in region.points]
+ region_path = self.dwg.path(d='M %f, %f' % points[0],
+ fill=svg_color(color),
+ stroke='none')
+ region_path.fill(opacity=self.alpha)
+ for point in points[1:]:
+ region_path.push('L %f, %f' % point)
+ self.dwg.add(region_path)
+
+ def _render_circle(self, circle, color):
+ center = map(mul, circle.position, self.scale)
+ acircle = self.dwg.circle(center=center,
+ r = SCALE * circle.radius,
+ fill=svg_color(color))
+ acircle.fill(opacity=self.alpha)
+ self.dwg.add(acircle)
+
+ def _render_rectangle(self, rectangle, color):
+ center = map(mul, rectangle.position, self.scale)
+ size = tuple(map(mul, (rectangle.width, rectangle.height), map(abs, self.scale)))
+ insert = center[0] - size[0] / 2., center[1] - size[1] / 2.
+ arect = self.dwg.rect(insert=insert, size=size,
+ fill=svg_color(color))
+ arect.fill(opacity=self.alpha)
+ self.dwg.add(arect)
+
+ def _render_obround(self, obround, color):
+ x, y = tuple(map(mul, obround.position, self.scale))
+ xsize, ysize = tuple(map(mul, (obround.width, obround.height),
+ self.scale))
+ xscale, yscale = self.scale
+
+ # Corner case...
+ if xsize == ysize:
+ circle = self.dwg.circle(center=(x, y),
+ r = (xsize / 2.0),
+ fill=svg_color(color))
+ circle.fill(opacity=self.alpha)
+ self.dwg.add(circle)
+
+ # Horizontal obround
+ elif xsize > ysize:
+ rectx = xsize - ysize
+ recty = ysize
+ c1 = self.dwg.circle(center=(x - (rectx / 2.0), y),
+ r = (ysize / 2.0),
+ fill=svg_color(color))
+
+ c2 = self.dwg.circle(center=(x + (rectx / 2.0), y),
+ r = (ysize / 2.0),
+ fill=svg_color(color))
+
+ rect = self.dwg.rect(insert=(x, y),
+ size=(xsize, ysize),
+ fill=svg_color(color))
+ c1.fill(opacity=self.alpha)
+ c2.fill(opacity=self.alpha)
+ rect.fill(opacity=self.alpha)
+ self.dwg.add(c1)
+ self.dwg.add(c2)
+ self.dwg.add(rect)
- def dump(self, filename):
- self.dwg.saveas(filename)
+ # Vertical obround
+ else:
+ rectx = xsize
+ recty = ysize - xsize
+ c1 = self.dwg.circle(center=(x, y - (recty / 2.)),
+ r = (xsize / 2.),
+ fill=svg_color(color))
+
+ c2 = self.dwg.circle(center=(x, y + (recty / 2.)),
+ r = (xsize / 2.),
+ fill=svg_color(color))
+
+ rect = self.dwg.rect(insert=(x, y),
+ size=(xsize, ysize),
+ fill=svg_color(color))
+ c1.fill(opacity=self.alpha)
+ c2.fill(opacity=self.alpha)
+ rect.fill(opacity=self.alpha)
+ self.dwg.add(c1)
+ self.dwg.add(c2)
+ self.dwg.add(rect)
+
+ def _render_drill(self, primitive, color):
+ center = map(mul, primitive.position, self.scale)
+ hit = self.dwg.circle(center=center, r=SCALE * primitive.radius,
+ fill=svg_color(color))
+ self.dwg.add(hit)
diff --git a/gerber/rs274x.py b/gerber/rs274x.py
index 4076f77..39693c9 100644
--- a/gerber/rs274x.py
+++ b/gerber/rs274x.py
@@ -19,14 +19,13 @@
"""
-import re
+import copy
import json
+import re
from .gerber_statements import *
+from .primitives import *
from .cam import CamFile, FileSettings
-
-
-
def read(filename):
""" Read data from filename and return a GerberFile
@@ -72,8 +71,9 @@ class GerberFile(CamFile):
`bounds` is stored as ((min x, max x), (min y, max y))
"""
- def __init__(self, statements, settings, filename=None):
- super(GerberFile, self).__init__(statements, settings, filename)
+ def __init__(self, statements, settings, primitives, filename=None):
+ super(GerberFile, self).__init__(statements, settings, primitives, filename)
+
@property
def comments(self):
@@ -111,22 +111,7 @@ class GerberFile(CamFile):
for statement in self.statements:
f.write(statement.to_gerber())
- def render(self, ctx, filename=None):
- """ Generate image of layer.
- Parameters
- ----------
- ctx : :class:`GerberContext`
- GerberContext subclass used for rendering the image
-
- filename : string <optional>
- If provided, the rendered image will be saved to `filename`
- """
- ctx.set_bounds(self.bounds)
- for statement in self.statements:
- ctx.evaluate(statement)
- if filename is not None:
- ctx.dump(filename)
class GerberParser(object):
@@ -178,15 +163,31 @@ class GerberParser(object):
def __init__(self):
self.settings = FileSettings()
self.statements = []
+ self.primitives = []
+ self.apertures = {}
+ self.current_region = None
+ self.x = 0
+ self.y = 0
+
+ self.aperture = 0
+ self.interpolation = 'linear'
+ self.direction = 'clockwise'
+ self.image_polarity = 'positive'
+ self.level_polarity = 'dark'
+ self.region_mode = 'off'
+ self.quadrant_mode = 'multi-quadrant'
+ self.step_and_repeat = (1, 1, 0, 0)
+
def parse(self, filename):
fp = open(filename, "r")
data = fp.readlines()
for stmt in self._parse(data):
+ self.evaluate(stmt)
self.statements.append(stmt)
- return GerberFile(self.statements, self.settings, filename)
+ return GerberFile(self.statements, self.settings, self.primitives, filename)
def dump_json(self):
stmts = {"statements": [stmt.__dict__ for stmt in self.statements]}
@@ -218,7 +219,7 @@ class GerberParser(object):
did_something = False
# Region Mode
- (mode, r) = self._match_one(self.REGION_MODE_STMT, line)
+ (mode, r) = _match_one(self.REGION_MODE_STMT, line)
if mode:
yield RegionModeStmt.from_gerber(line)
line = r
@@ -226,7 +227,7 @@ class GerberParser(object):
continue
# Quadrant Mode
- (mode, r) = self._match_one(self.QUAD_MODE_STMT, line)
+ (mode, r) = _match_one(self.QUAD_MODE_STMT, line)
if mode:
yield QuadrantModeStmt.from_gerber(line)
line = r
@@ -234,7 +235,7 @@ class GerberParser(object):
continue
# coord
- (coord, r) = self._match_one(self.COORD_STMT, line)
+ (coord, r) = _match_one(self.COORD_STMT, line)
if coord:
yield CoordStmt.from_dict(coord, self.settings)
line = r
@@ -242,7 +243,7 @@ class GerberParser(object):
continue
# aperture selection
- (aperture, r) = self._match_one(self.APERTURE_STMT, line)
+ (aperture, r) = _match_one(self.APERTURE_STMT, line)
if aperture:
yield ApertureStmt(**aperture)
@@ -251,7 +252,7 @@ class GerberParser(object):
continue
# comment
- (comment, r) = self._match_one(self.COMMENT_STMT, line)
+ (comment, r) = _match_one(self.COMMENT_STMT, line)
if comment:
yield CommentStmt(comment["comment"])
did_something = True
@@ -259,7 +260,7 @@ class GerberParser(object):
continue
# parameter
- (param, r) = self._match_one_from_many(self.PARAM_STMT, line)
+ (param, r) = _match_one_from_many(self.PARAM_STMT, line)
if param:
if param["param"] == "FS":
stmt = FSParamStmt.from_dict(param)
@@ -292,7 +293,7 @@ class GerberParser(object):
continue
# eof
- (eof, r) = self._match_one(self.EOF_STMT, line)
+ (eof, r) = _match_one(self.EOF_STMT, line)
if eof:
yield EofStmt()
did_something = True
@@ -311,17 +312,125 @@ class GerberParser(object):
yield UnknownStmt(line)
oldline = line
- def _match_one(self, expr, data):
- match = expr.match(data)
- if match is None:
- return ({}, None)
- else:
- return (match.groupdict(), data[match.end(0):])
+ def evaluate(self, stmt):
+ """ Evaluate Gerber statement and update image accordingly.
- def _match_one_from_many(self, exprs, data):
- for expr in exprs:
- match = expr.match(data)
- if match:
- return (match.groupdict(), data[match.end(0):])
+ This method is called once for each statement in the file as it
+ is parsed.
+ Parameters
+ ----------
+ statement : Statement
+ Gerber/Excellon statement to evaluate.
+
+ """
+ if isinstance(stmt, (CommentStmt, UnknownStmt, EofStmt)):
+ return
+
+ elif isinstance(stmt, ParamStmt):
+ self._evaluate_param(stmt)
+
+ elif isinstance(stmt, CoordStmt):
+ self._evaluate_coord(stmt)
+
+ elif isinstance(stmt, ApertureStmt):
+ self._evaluate_aperture(stmt)
+
+ elif isinstance(stmt, (RegionModeStmt, QuadrantModeStmt)):
+ self._evaluate_mode(stmt)
+
+ else:
+ raise Exception("Invalid statement to evaluate")
+
+
+ def _define_aperture(self, d, shape, modifiers):
+ aperture = None
+ if shape == 'C':
+ diameter = float(modifiers[0][0])
+ aperture = Circle(position=None, diameter=diameter)
+ elif shape == 'R':
+ width = float(modifiers[0][0])
+ height = float(modifiers[0][1])
+ aperture = Rectangle(position=None, width=width, height=height)
+ elif shape == 'O':
+ width = float(modifiers[0][0])
+ height = float(modifiers[0][1])
+ aperture = Obround(position=None, width=width, height=height)
+ self.apertures[d] = aperture
+
+ def _evaluate_mode(self, stmt):
+ if stmt.type == 'RegionMode':
+ if self.region_mode == 'on' and stmt.mode == 'off':
+ self.primitives.append(Region(self.current_region, self.level_polarity))
+ self.current_region = None
+ self.region_mode = stmt.mode
+ elif stmt.type == 'QuadrantMode':
+ self.quadrant_mode = stmt.mode
+
+ def _evaluate_param(self, stmt):
+ if stmt.param == "FS":
+ self.settings.zero_suppression = stmt.zero_suppression
+ self.settings.format = stmt.format
+ self.settings.notation = stmt.notation
+ elif stmt.param == "MO":
+ self.settings.units = stmt.mode
+ elif stmt.param == "IP":
+ self.image_polarity = stmt.ip
+ elif stmt.param == "LP":
+ self.level_polarity = stmt.lp
+ elif stmt.param == "AD":
+ self._define_aperture(stmt.d, stmt.shape, stmt.modifiers)
+
+ def _evaluate_coord(self, stmt):
+ x = self.x if stmt.x is None else stmt.x
+ y = self.y if stmt.y is None else stmt.y
+ if stmt.function in ("G01", "G1"):
+ self.interpolation = 'linear'
+ elif stmt.function in ('G02', 'G2', 'G03', 'G3'):
+ self.interpolation = 'arc'
+ self.direction = ('clockwise' if stmt.function in ('G02', 'G2')
+ else 'counterclockwise')
+ if stmt.op == "D01":
+ if self.region_mode == 'on':
+ if self.current_region is None:
+ self.current_region = [(self.x, self.y), ]
+ self.current_region.append((x, y,))
+ else:
+ start = (self.x, self.y)
+ end = (x, y)
+ width = self.apertures[self.aperture].stroke_width
+ if self.interpolation == 'linear':
+ self.primitives.append(Line(start, end, width, self.level_polarity))
+ else:
+ center = (start[0] + stmt.i, start[1] + stmt.j)
+ self.primitives.append(Arc(start, end, center, self.direction, width, self.level_polarity))
+
+ elif stmt.op == "D02":
+ pass
+
+ elif stmt.op == "D03":
+ primitive = copy.deepcopy(self.apertures[self.aperture])
+ primitive.position = (x, y)
+ primitive.level_polarity = self.level_polarity
+ self.primitives.append(primitive)
+ self.x, self.y = x, y
+
+ def _evaluate_aperture(self, stmt):
+ self.aperture = stmt.d
+
+
+def _match_one(expr, data):
+ match = expr.match(data)
+ if match is None:
return ({}, None)
+ else:
+ return (match.groupdict(), data[match.end(0):])
+
+
+def _match_one_from_many(exprs, data):
+ for expr in exprs:
+ match = expr.match(data)
+ if match:
+ return (match.groupdict(), data[match.end(0):])
+
+ return ({}, None)
generated by cgit (git 2.34.1) at 2024-11-06 09:09:19 +0000