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DefaultModules.py
387 lines (362 loc) · 18.2 KB
/
DefaultModules.py
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import os
from base64 import b64encode
from io import BytesIO
from xml.etree.cElementTree import Element, ElementTree, SubElement
from svgelements import *
MILS_PER_MM = 39.3701
class SVGWriter:
@staticmethod
def save_types():
yield "Scalable Vector Graphics", "svg", "image/svg+xml"
@staticmethod
def versions():
yield 'default'
@staticmethod
def save(device, f, version='default'):
root = Element(SVG_NAME_TAG)
root.set(SVG_ATTR_VERSION, SVG_VALUE_VERSION)
root.set(SVG_ATTR_XMLNS, SVG_VALUE_XMLNS)
root.set(SVG_ATTR_XMLNS_LINK, SVG_VALUE_XLINK)
root.set(SVG_ATTR_XMLNS_EV, SVG_VALUE_XMLNS_EV)
root.set("xmlns:meerK40t", "https://github.com/meerk40t/meerk40t/wiki/Namespace")
# Native unit is mils, these must convert to mm and to px
mils_per_mm = 39.3701
mils_per_px = 1000.0 / 96.0
px_per_mils = 96.0 / 1000.0
device.setting(int, "bed_width", 320)
device.setting(int, "bed_height", 220)
mm_width = device.bed_width
mm_height = device.bed_height
root.set(SVG_ATTR_WIDTH, '%fmm' % mm_width)
root.set(SVG_ATTR_HEIGHT, '%fmm' % mm_height)
px_width = mm_width * mils_per_mm * px_per_mils
px_height = mm_height * mils_per_mm * px_per_mils
viewbox = '%d %d %d %d' % (0, 0, round(px_width), round(px_height))
scale = 'scale(%f)' % px_per_mils
root.set(SVG_ATTR_VIEWBOX, viewbox)
elements = device.elements
for operation in elements.ops():
subelement = SubElement(root, "operation")
for key in dir(operation):
if key.startswith('_'):
continue
value = getattr(operation, key)
if type(value) not in (int, float, str, bool):
continue
subelement.set(key, str(value))
if elements.note is not None:
subelement = SubElement(root, "note")
subelement.set(SVG_TAG_TEXT, elements.note)
for element in elements.elems():
if isinstance(element, Path):
subelement = SubElement(root, SVG_TAG_PATH)
subelement.set(SVG_ATTR_DATA, element.d())
subelement.set(SVG_ATTR_TRANSFORM, scale)
for key, val in element.values.items():
if key in ('stroke-width', 'fill-opacity', 'speed',
'overscan', 'power', 'id', 'passes',
'raster_direction', 'raster_step', 'd_ratio'):
subelement.set(key, str(val))
elif isinstance(element, SVGText):
subelement = SubElement(root, SVG_TAG_TEXT)
subelement.text = element.text
t = Matrix(element.transform)
t *= scale
subelement.set('transform', 'matrix(%f, %f, %f, %f, %f, %f)' % (t.a, t.b, t.c, t.d, t.e, t.f))
for key, val in element.values.items():
if key in ('stroke-width', 'fill-opacity', 'speed',
'overscan', 'power', 'id', 'passes',
'raster_direction', 'raster_step', 'd_ratio',
'font-family', 'font-size', 'font-weight'):
subelement.set(key, str(val))
else: # Image.
subelement = SubElement(root, SVG_TAG_IMAGE)
stream = BytesIO()
element.image.save(stream, format='PNG')
png = b64encode(stream.getvalue()).decode('utf8')
subelement.set('xlink:href', "data:image/png;base64,%s" % (png))
subelement.set(SVG_ATTR_X, '0')
subelement.set(SVG_ATTR_Y, '0')
subelement.set(SVG_ATTR_WIDTH, str(element.image.width))
subelement.set(SVG_ATTR_HEIGHT, str(element.image.height))
subelement.set(SVG_ATTR_TRANSFORM, scale)
t = Matrix(element.transform)
t *= scale
subelement.set('transform', 'matrix(%f, %f, %f, %f, %f, %f)' % (t.a, t.b, t.c, t.d, t.e, t.f))
for key, val in element.values.items():
if key in ('stroke-width', 'fill-opacity', 'speed',
'overscan', 'power', 'id', 'passes',
'raster_direction', 'raster_step', 'd_ratio'):
subelement.set(key, str(val))
stroke = str(element.stroke)
fill = str(element.fill)
if stroke == 'None':
stroke = SVG_VALUE_NONE
if fill == 'None':
fill = SVG_VALUE_NONE
subelement.set(SVG_ATTR_STROKE, stroke)
subelement.set(SVG_ATTR_FILL, fill)
tree = ElementTree(root)
tree.write(f)
class SVGLoader:
@staticmethod
def load_types():
yield "Scalable Vector Graphics", ("svg",), "image/svg+xml"
@staticmethod
def load(kernel, pathname, **kwargs):
kernel.setting(int, "bed_width", 320)
kernel.setting(int, "bed_height", 220)
elements = []
basename = os.path.basename(pathname)
scale_factor = 1000.0 / 96.0
svg = SVG.parse(source=pathname,
width='%fmm' % (kernel.bed_width),
height='%fmm' % (kernel.bed_height),
ppi=96.0,
transform='scale(%f)' % scale_factor)
for element in svg.elements():
try:
if element.values['visibility'] == 'hidden':
continue
except KeyError:
pass
except AttributeError:
pass
if isinstance(element, SVGText):
elements.append(element)
elif isinstance(element, Path):
elements.append(element)
elif isinstance(element, Shape):
e = Path(element)
e.reify() # In some cases the shape could not have reified, the path must.
elements.append(e)
elif isinstance(element, SVGImage):
try:
element.load(os.path.dirname(pathname))
if element.image is not None:
elements.append(element)
except OSError:
pass
return elements, pathname, basename
class ImageLoader:
@staticmethod
def load_types():
yield "Portable Network Graphics", ("png",), "image/png"
yield "Bitmap Graphics", ("bmp",), "image/bmp"
yield "EPS Format", ("eps",), "image/eps"
yield "GIF Format", ("gif",), "image/gif"
yield "Icon Format", ("ico",), "image/ico"
yield "JPEG Format", ("jpg", "jpeg", "jpe"), "image/jpeg"
yield "Webp Format", ("webp",), "image/webp"
@staticmethod
def load(kernel, pathname, **kwargs):
basename = os.path.basename(pathname)
image = SVGImage({'href': pathname, 'width': "100%", 'height': "100%"})
image.load()
return [image], pathname, basename
class DxfLoader:
@staticmethod
def load_types():
yield "Drawing Exchange Format", ("dxf",), "image/vnd.dxf"
@staticmethod
def load(kernel, pathname, **kwargs):
""""
Load dxf content. Requires ezdxf which tends to also require Python 3.6 or greater.
Dxf data has an origin point located in the lower left corner. +y -> top
"""
kernel.setting(int, "bed_width", 320)
kernel.setting(int, "bed_height", 220)
import ezdxf
basename = os.path.basename(pathname)
dxf = ezdxf.readfile(pathname)
elements = []
for entity in dxf.entities:
try:
entity.transform_to_wcs(entity.ocs())
except AttributeError:
pass
if entity.dxftype() == 'CIRCLE':
element = Circle(center=entity.dxf.center, r=entity.dxf.radius)
elif entity.dxftype() == 'ARC':
circ = Circle(center=entity.dxf.center,
r=entity.dxf.radius)
element = Path(circ.arc_angle(Angle.degrees(entity.dxf.start_angle),
Angle.degrees(entity.dxf.end_angle)))
elif entity.dxftype() == 'ELLIPSE':
# TODO: needs more math, axis is vector, ratio is to minor.
element = Ellipse(center=entity.dxf.center,
# major axis is vector
# ratio is the ratio of major to minor.
start_point=entity.start_point,
end_point=entity.end_point,
start_angle=entity.dxf.start_param,
end_angle=entity.dxf.end_param)
elif entity.dxftype() == 'LINE':
# https://ezdxf.readthedocs.io/en/stable/dxfentities/line.html
element = SimpleLine(x1=entity.dxf.start[0], y1=entity.dxf.start[1],
x2=entity.dxf.end[0], y2=entity.dxf.end[1])
elif entity.dxftype() == 'POLYLINE':
# https://ezdxf.readthedocs.io/en/stable/dxfentities/lwpolyline.html
if entity.is_2d_polyline:
if not entity.has_arc:
if entity.is_closed:
element = Polygon([(p[0], p[1]) for p in entity.points()])
else:
element = Polyline([(p[0], p[1]) for p in entity.points()])
else:
element = Path()
bulge = 0
for e in entity:
point = e.dxf.location
if bulge == 0:
element.line((point[0], point[1]))
else:
element += Arc(start=element.current_point,
end=(point[0], point[1]),
bulge=bulge)
bulge = e.dxf.bulge
if entity.is_closed:
if bulge == 0:
element.closed()
else:
element += Arc(start=element.current_point,
end=element.z_point,
bulge=bulge)
element.closed()
elif entity.dxftype() == 'LWPOLYLINE':
# https://ezdxf.readthedocs.io/en/stable/dxfentities/lwpolyline.html
if not entity.has_arc:
if entity.closed:
element = Polygon(*[(p[0], p[1]) for p in entity])
else:
element = Polyline(*[(p[0], p[1]) for p in entity])
else:
element = Path()
bulge = 0
for e in entity:
if bulge == 0:
element.line((e[0], e[1]))
else:
element += Arc(start=element.current_point,
end=(e[0], e[1]),
bulge=bulge)
bulge = e[4]
if entity.closed:
if bulge == 0:
element.closed()
else:
element += Arc(start=element.current_point,
end=element.z_point,
bulge=bulge)
element.closed()
elif entity.dxftype() == 'HATCH':
# https://ezdxf.readthedocs.io/en/stable/dxfentities/hatch.html
element = Path()
if entity.bgcolor is not None:
Path.fill = Color(entity.bgcolor)
for p in entity.paths:
if p.path_type_flags & 2:
for v in p.vertices:
element.line(v[0], v[1])
if p.is_closed:
element.closed()
else:
for e in p.edges:
if type(e) == "LineEdge":
# https://ezdxf.readthedocs.io/en/stable/dxfentities/hatch.html#ezdxf.entities.LineEdge
element.line(e.start, e.end)
elif type(e) == "ArcEdge":
# https://ezdxf.readthedocs.io/en/stable/dxfentities/hatch.html#ezdxf.entities.ArcEdge
circ = Circle(center=e.center,
radius=e.radius, )
element += circ.arc_angle(Angle.degrees(e.start_angle), Angle.degrees(e.end_angle))
elif type(e) == "EllipseEdge":
# https://ezdxf.readthedocs.io/en/stable/dxfentities/hatch.html#ezdxf.entities.EllipseEdge
element += Arc(radius=e.radius,
start_angle=Angle.degrees(e.start_angle),
end_angle=Angle.degrees(e.end_angle),
ccw=e.is_counter_clockwise)
elif type(e) == "SplineEdge":
# https://ezdxf.readthedocs.io/en/stable/dxfentities/hatch.html#ezdxf.entities.SplineEdge
if e.degree == 3:
for i in range(len(e.knot_values)):
control = e.control_values[i]
knot = e.knot_values[i]
element.quad(control, knot)
elif e.degree == 4:
for i in range(len(e.knot_values)):
control1 = e.control_values[2 * i]
control2 = e.control_values[2 * i + 1]
knot = e.knot_values[i]
element.cubic(control1, control2, knot)
else:
for i in range(len(e.knot_values)):
knot = e.knot_values[i]
element.line(knot)
elif entity.dxftype() == 'IMAGE':
bottom_left_position = entity.dxf.insert
size = entity.dxf.image_size
imagedef = entity.dxf.image_def_handle
if not isinstance(imagedef, str):
imagedef = imagedef.filename
element = SVGImage(href=imagedef,
x=bottom_left_position[0],
y=bottom_left_position[1] - size[1],
width=size[0],
height=size[1])
elif entity.dxftype() == 'MTEXT':
insert = entity.dxf.insert
element = SVGText(x=insert[0], y=insert[1], text=entity.dxf.text)
elif entity.dxftype() == 'TEXT':
insert = entity.dxf.insert
element = SVGText(x=insert[0], y=insert[1], text=entity.dxf.text)
elif entity.dxftype() == 'SOLID' or entity.dxftype() == 'TRACE':
# https://ezdxf.readthedocs.io/en/stable/dxfentities/solid.html
element = Path()
element.move((entity[0][0], entity[0][1]))
element.line((entity[1][0], entity[1][1]))
element.line((entity[2][0], entity[2][1]))
element.line((entity[3][0], entity[3][1]))
element.closed()
element.fill = Color('Black')
elif entity.dxftype() == 'SPLINE':
element = Path()
# TODO: Additional research.
# if entity.dxf.degree == 3:
# element.move(entity.knots[0])
# print(entity.dxf.n_control_points)
# for i in range(1, entity.dxf.n_knots):
# print(entity.knots[i])
# print(entity.control_points[i-1])
# element.quad(
# entity.control_points[i-1],
# entity.knots[i]
# )
# elif entity.dxf.degree == 4:
# element.move(entity.knots[0])
# for i in range(1, entity.dxf.n_knots):
# element.quad(
# entity.control_points[2 * i - 2],
# entity.control_points[2 * i - 1],
# entity.knots[i]
# )
# else:
element.move(entity.control_points[0])
for i in range(1, entity.dxf.n_control_points):
element.line(entity.control_points[i])
if entity.closed:
element.closed()
else:
continue
# Might be something unsupported.
if entity.rgb is not None:
element.stroke = Color(entity.rgb)
else:
element.stroke = Color('black')
element.transform.post_scale(MILS_PER_MM, -MILS_PER_MM)
element.transform.post_translate_y(kernel.bed_height * MILS_PER_MM)
if isinstance(element, SVGText):
elements.append(element)
else:
elements.append(abs(Path(element)))
return elements, pathname, basename