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import string
import math
from .sexp import *
from .base_types import *
from .primitives import *
from ... import graphic_objects as go
from ... import apertures as ap
from ...newstroke import Newstroke
from ...utils import rotate_point, MM
@sexp_type('layer')
class TextLayer:
layer: str = ''
knockout: Flag() = False
@sexp_type('gr_text')
class Text:
text: str = ''
at: AtPos = field(default_factory=AtPos)
layer: TextLayer = field(default_factory=TextLayer)
tstamp: Timestamp = None
effects: TextEffect = field(default_factory=TextEffect)
def render(self, variables={}):
if not self.effects or self.effects.hide or not self.effects.font:
return
font = Newstroke.load()
line_width = self.effects.font.thickness
text = string.Template(self.text).safe_substitute(variables)
strokes = list(font.render(text, size=self.effects.font.size.y))
min_x = min(x for st in strokes for x, y in st)
min_y = min(y for st in strokes for x, y in st)
max_x = max(x for st in strokes for x, y in st)
max_y = max(y for st in strokes for x, y in st)
w = max_x - min_x
h = max_y - min_y
offx = -min_x + {
None: -w/2,
Atom.right: -w,
Atom.left: 0
}[self.effects.justify.h if self.effects.justify else None]
offy = {
None: self.effects.font.size.y/2,
Atom.top: self.effects.font.size.y,
Atom.bottom: 0
}[self.effects.justify.v if self.effects.justify else None]
aperture = ap.CircleAperture(line_width or 0.2, unit=MM)
for stroke in strokes:
out = []
for x, y in stroke:
x, y = x+offx, y+offy
x, y = rotate_point(x, y, math.radians(self.at.rotation or 0))
x, y = x+self.at.x, y+self.at.y
out.append((x, y))
for p1, p2 in zip(out[:-1], out[1:]):
yield go.Line(*p1, *p2, aperture=aperture, unit=MM)
@sexp_type('gr_text_box')
class TextBox:
locked: Flag() = False
text: str = ''
start: Named(XYCoord) = None
end: Named(XYCoord) = None
pts: PointList = field(default_factory=PointList)
angle: OmitDefault(Named(float)) = 0.0
layer: Named(str) = ""
tstamp: Timestamp = None
effects: TextEffect = field(default_factory=TextEffect)
stroke: Stroke = field(default_factory=Stroke)
render_cache: RenderCache = None
def render(self, variables={}):
text = string.Template(self.text).safe_substitute(variables)
if text != self.text:
raise ValueError('Rendering of vector font text with variables not yet supported')
if not render_cache or not render_cache.polygons:
raise ValueError('Vector font text with empty render cache')
for poly in render_cache.polygons:
reg = go.Region([(p.x, p.y) for p in poly.pts.xy], unit=MM)
if self.stroke:
if self.stroke.type not in (None, Atom.default, Atom.solid):
raise ValueError('Dashed strokes are not supported on vector text')
yield from reg.outline_objects(aperture=ap.CircleAperture(self.stroke.width, unit=MM))
yield reg
@sexp_type('gr_line')
class Line:
start: Rename(XYCoord) = None
end: Rename(XYCoord) = None
angle: Named(float) = None # wat
layer: Named(str) = None
width: Named(float) = None
tstamp: Timestamp = None
def render(self, variables=None):
if self.angle:
raise NotImplementedError('Angles on lines are not implemented. Please raise an issue and provide an example file.')
aperture = ap.CircleAperture(self.width, unit=MM)
yield go.Line(self.start.x, self.start.y, self.end.x, self.end.y, aperture=aperture, unit=MM)
@sexp_type('fill')
class FillMode:
# Needed for compatibility with weird files
fill: AtomChoice(Atom.solid, Atom.yes, Atom.no, Atom.none) = False
@classmethod
def __map__(self, obj, parent=None):
return obj[1] in (Atom.solid, Atom.yes)
@classmethod
def __sexp__(self, value):
yield [Atom.fill, Atom.solid if value else Atom.none]
@sexp_type('gr_rect')
class Rectangle:
start: Rename(XYCoord) = None
end: Rename(XYCoord) = None
layer: Named(str) = None
width: Named(float) = None
fill: FillMode = False
tstamp: Timestamp = None
def render(self, variables=None):
rect = go.Region.from_rectangle(self.start.x, self.start.y,
self.end.x-self.start.x, self.end.y-self.start.y,
unit=MM)
if self.fill:
yield rect
if self.width:
yield from rect.outline_objects(aperture=ap.CircleAperture(self.width, unit=MM))
@sexp_type('gr_circle')
class Circle:
center: Rename(XYCoord) = None
end: Rename(XYCoord) = None
layer: Named(str) = None
width: Named(float) = None
fill: FillMode = False
tstamp: Timestamp = None
def render(self, variables=None):
r = math.dist((self.center.x, self.center.y), (self.end.x, self.end.y))
aperture = ap.CircleAperture(self.width or 0, unit=MM)
arc = go.Arc.from_circle(self.center.x, self.center.y, r, aperture=aperture, unit=MM)
if self.width:
yield arc
if self.fill:
yield arc.to_region()
@sexp_type('gr_arc')
class Arc:
start: Rename(XYCoord) = None
mid: Rename(XYCoord) = None
end: Rename(XYCoord) = None
layer: Named(str) = None
width: Named(float) = None
tstamp: Timestamp = None
def render(self, variables=None):
if not self.width:
return
cx, cy = self.mid.x, self.mid.y
x1, y1 = self.start.x, self.start.y
x2, y2 = self.end.x, self.end.y
yield go.Arc(x1, y1, x2, y2, cx-x1, cy-y1, aperture=ap.CircleAperture(self.width or 0, unit=MM), clockwise=True, unit=MM)
@sexp_type('gr_poly')
class Polygon:
pts: PointList = field(default_factory=PointList)
layer: Named(str) = None
width: Named(float) = None
fill: FillMode = True
tstamp: Timestamp = None
def render(self, variables=None):
reg = go.Region([(pt.x, pt.y) for pt in self.pts.xy], unit=MM)
if self.width and self.width >= 0.005:
yield from reg.outline_objects(aperture=ap.CircleAperture(self.width, unit=MM))
if self.fill:
yield reg
@sexp_type('gr_curve')
class Curve:
pts: PointList = field(default_factory=PointList)
layer: Named(str) = None
width: Named(float) = None
tstamp: Timestamp = None
def render(self, variables=None):
raise NotImplementedError('Bezier rendering is not yet supported. Please raise an issue and provide an example file.')
@sexp_type('gr_bbox')
class AnnotationBBox:
start: Rename(XYCoord) = None
end: Rename(XYCoord) = None
def render(self, variables=None):
return []
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