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authorPaulo Henrique Silva <ph.silva@gmail.com>2013-12-19 00:46:49 -0200
committerPaulo Henrique Silva <ph.silva@gmail.com>2013-12-19 00:46:49 -0200
commita3f7c778c069a3cffaf86c7e6d78a4eda09bbae9 (patch)
tree20cfe3dd6c717f12c5664fff3126d1fb5ee9156a /gerber
parentd97fe511790f05f069425e278ad8506bae41d0a8 (diff)
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Very ugly but concept proof SVG render.
First images on first-light directory. Not a single minute spent on visual quality, just proving that it is improving.
Diffstat (limited to 'gerber')
-rw-r--r--gerber/gerber.py160
1 files changed, 138 insertions, 22 deletions
diff --git a/gerber/gerber.py b/gerber/gerber.py
index 954eed1..11e9574 100644
--- a/gerber/gerber.py
+++ b/gerber/gerber.py
@@ -9,10 +9,19 @@ def red(s):
return '\033[1;31m{0}\033[0;m'.format(s)
-class Statement:
+class Statement(object):
def __init__(self, type):
self.type = type
+ def __str__(self):
+ s = "<{0} ".format(self.__class__.__name__)
+
+ for key, value in self.__dict__.items():
+ s += "{0}={1} ".format(key, value)
+
+ s = s.rstrip() + ">"
+ return s
+
class ParamStmt(Statement):
def __init__(self, param):
@@ -124,8 +133,11 @@ LEVEL_POLARITY_CLEAR = 2
NOTATION_ABSOLUTE = 1
NOTATION_INCREMENTAL = 2
+UNIT_INCH = 1
+UNIT_MM = 2
-class GerberCoordFormat:
+
+class GerberCoordFormat(object):
def __init__(self, zeroes, x, y):
self.omit_leading_zeroes = True if zeroes == "L" else False
@@ -134,14 +146,36 @@ class GerberCoordFormat:
self.y_int_digits, self.y_dec_digits = [int(d) for d in y]
def resolve(self, x, y):
- return x, y
+ new_x = x
+ new_y = y
+
+ if new_x is not None:
+ missing_zeroes = (self.x_int_digits + self.x_dec_digits) - len(new_x)
+
+ if missing_zeroes and self.omit_leading_zeroes:
+ new_x = (missing_zeroes*"0") + new_x
+ elif missing_zeroes and self.omit_trailing_zeroes:
+ new_x += missing_zeroes * "0"
+ new_x = float("{0}.{1}".format(new_x[:self.x_int_digits], new_x[self.x_int_digits:]))
-class GerberContext:
+ if new_y is not None:
+ missing_zeroes = (self.y_int_digits + self.y_dec_digits) - len(new_y)
+
+ if missing_zeroes and self.omit_leading_zeroes:
+ new_y = (missing_zeroes*"0") + new_y
+ elif missing_zeroes and self.omit_trailing_zeroes:
+ new_y += missing_zeroes * "0"
+
+ new_y = float("{0}.{1}".format(new_y[:self.y_int_digits], new_y[self.y_int_digits:]))
+
+ return new_x, new_y
+
+
+class GerberContext(object):
coord_format = None
coord_notation = NOTATION_ABSOLUTE
-
- unit = None
+ coord_unit = None
x = 0
y = 0
@@ -149,39 +183,99 @@ class GerberContext:
current_aperture = 0
interpolation = None
- region_mode = False
- quadrant_mode = False
-
image_polarity = IMAGE_POLARITY_POSITIVE
level_polarity = LEVEL_POLARITY_DARK
- steps = (1, 1)
- repeat = (None, None)
-
def __init__(self):
pass
def set_coord_format(self, zeroes, x, y):
+ # print "<coord-format/>"
self.coord_format = GerberCoordFormat(zeroes, x, y)
def set_coord_notation(self, notation):
+ # print "<coord-notation/>"
self.coord_notation = NOTATION_ABSOLUTE if notation == "A" else NOTATION_INCREMENTAL
+ def set_coord_unit(self, unit):
+ # print "<coord-unit/>"
+ self.coord_unit = UNIT_INCH if unit == "IN" else UNIT_MM
+
def set_image_polarity(self, polarity):
+ # print "<image-polarity/>"
self.image_polarity = IMAGE_POLARITY_POSITIVE if polarity == "POS" else IMAGE_POLARITY_NEGATIVE
def set_level_polarity(self, polarity):
+ # print "<level-polarity/>"
self.level_polarity = LEVEL_POLARITY_DARK if polarity == "D" else LEVEL_POLARITY_CLEAR
+ def set_aperture(self, d):
+ # print "<aperture %s/>" % d
+ self.current_aperture = d
+
+ def resolve(self, x, y):
+ x, y = self.coord_format.resolve(x, y)
+ return x or self.x, y or self.y
+
def move(self, x, y):
- self.x = x
- self.y = y
+ # print "<x=%s y=%s/>" % (x, y)
+ self.x, self.y = self.resolve(x, y)
- def aperture(self, d):
- self.current_aperture = d
+ def line(self):
+ # print "<line/>"
+ pass
+ def arc(self):
+ # print "<arc/>"
+ pass
+
+ def flash(self):
+ # print "<flash/>"
+ pass
+
+
+class SvgContext(GerberContext):
+ def __init__(self):
+ GerberContext.__init__(self)
+
+ self.header = "<svg width=\"1280\" height=\"720\">"
+ self.footer = "</svg>"
+
+ self.lines = []
+
+ self.path = []
+
+ def move(self, x, y):
+ super(SvgContext, self).move(x, y)
+ self.path.append((self.x, self.y))
+
+ def line(self):
+ super(SvgContext, self).line()
-class Gerber:
+ for i, path in enumerate(self.path):
+ if i > 0:
+ x1 = self.path[i-1]
+ x2 = self.path[i]
+ self.lines.append('<line x1="{0}" y1="{1}" x2="{2}" y2="{3}" stroke="rgb(0,145,21)" stroke-width="2"/>'.format(x1[0]*300, x1[1]*300, x2[0]*300, x2[1]*300))
+
+ self.path = []
+
+ def arc(self):
+ super(SvgContext, self).arc()
+ self.path = []
+
+ def flash(self):
+ super(SvgContext, self).flash()
+ self.path = []
+
+ def dump(self):
+ print self.header
+ for line in self.lines:
+ print line
+ print self.footer
+
+
+class Gerber(object):
NUMBER = r"[\+-]?\d+"
DECIMAL = r"[\+-]?\d+([.]?\d+)?"
STRING = r"[a-zA-Z0-9_+\-/!?<>”’(){}.\|&@# :]+"
@@ -224,7 +318,7 @@ class Gerber:
def __init__(self):
self.statements = []
- self.ctx = GerberContext()
+ self.ctx = SvgContext()
def parse(self, filename):
fp = open(filename, "r")
@@ -234,10 +328,19 @@ class Gerber:
self.statements.append(stmt)
self._evaluate(stmt)
- def dump(self):
+ def dump_json(self):
stmts = {"statements": [stmt.__dict__ for stmt in self.statements]}
return json.dumps(stmts)
+ def dump_str(self):
+ s = ""
+ for stmt in self.statements:
+ s += str(stmt) + "\n"
+ return s
+
+ def dump(self):
+ self.ctx.dump()
+
def _parse(self, data):
multiline = None
@@ -368,12 +471,25 @@ class Gerber:
if stmt.param == "FS":
self.ctx.set_coord_format(stmt.zero, stmt.x, stmt.y)
self.ctx.set_coord_notation(stmt.notation)
+ elif stmt.param == "MO:":
+ self.ctx.set_coord_unit(stmt.mo)
+ elif stmt.param == "IP:":
+ self.ctx.set_image_polarity(stmt.ip)
+ elif stmt.param == "LP:":
+ self.ctx.set_level_polarity(stmt.lp)
def _evaluate_coord(self, stmt):
- self.ctx.move(stmt.x, stmt.y)
+ if stmt.op == "D01":
+ self.ctx.move(stmt.x, stmt.y)
+ self.ctx.line()
+ elif stmt.op == "D02":
+ self.ctx.move(stmt.x, stmt.y)
+ elif stmt.op == "D03":
+ self.ctx.move(stmt.x, stmt.y)
+ self.ctx.flash()
def _evaluate_aperture(self, stmt):
- self.ctx.aperture(stmt.d)
+ self.ctx.set_aperture(stmt.d)
if __name__ == "__main__":
@@ -382,4 +498,4 @@ if __name__ == "__main__":
for f in sys.argv[1:]:
g = Gerber()
g.parse(f)
- print g.dump()
+ g.dump()