def create_simple_line(obj, state):
"""Creates an SVG <line> element from a Faint Line object."""
element = ET.Element('line')
points = obj.get_points()
assert len(points) == 4
element.set('x1', str(points[0]))
element.set('y1', str(points[1]))
arrow = obj.arrow
state.set_arrow(arrow)
# Fixme: Duplicates poly-line
if arrow == 'front':
angle = rad_angle(points[2], points[3], points[0], points[1])
x, y = arrow_line_end(points[2], points[3], angle, obj.linewidth)
element.set('x2', str(x))
element.set('y2', str(y))
else:
element.set('x2', str(points[2]))
element.set('y2', str(points[3]))
element.set('style', svg_line_style(obj, state) + svg_line_dash_style(obj))
if arrow == 'front' or arrow == 'both':
element.set('marker-end', 'url(#Arrowhead)')
if arrow == 'back' or arrow == 'both':
element.set('marker-start', 'url(#Arrowtail)')
return element
def create_simple_line(obj, state):
"""Creates an SVG <line> element from a Faint Line object."""
element = ET.Element('line')
points = obj.get_points()
assert len(points) == 4
element.set('x1', str(points[0]))
element.set('y1', str(points[1]))
arrowhead = obj.get_arrowhead()
if arrowhead == 1 or arrowhead == 3:
state.arrowhead = True
if arrowhead == 2 or arrowhead == 3:
state.arrowtail = True
if arrowhead == 1:
angle = rad_angle(points[2], points[3], points[0], points[1])
x, y = arrow_line_end(points[2], points[3], angle, obj.get_linewidth())
element.set('x2', str(x))
element.set('y2', str(y))
else:
element.set('x2', str(points[2]))
element.set('y2', str(points[3]))
element.set('style', svg_line_style(obj, state) + svg_line_dash_style(obj))
if arrowhead == 1 or arrowhead == 3:
element.set('marker-end', 'url(#Arrowhead)')
if arrowhead == 2 or arrowhead == 3:
element.set('marker-start', 'url(#Arrowtail)')
return element
def create_polyline(obj, state):
"""Creates an SVG <polyline> element from a Faint Line."""
element = ET.Element('polyline')
points = obj.get_points()
arrow = obj.arrow
state.set_arrow(arrow)
if arrow == 'front':
angle = rad_angle(points[-2], points[-1], points[-4], points[-3])
x, y = arrow_line_end(points[-2], points[-1], angle, obj.linewidth)
points[-2] = x
points[-1] = y
point_str = ",".join([str(pt) for pt in points])
element.set('points', point_str)
style = svg_line_style(obj, state) + svg_line_dash_style(obj) + "fill:none"
element.set('style', style)
if arrow == 'front' or arrow == 'both':
element.set('marker-end', 'url(#Arrowhead)')
elif arrow == 'back' or arrow == 'both':
element.set('marker-start', 'url(#Arrowtail)')
return element
def create_polyline(obj, state):
"""Creates an SVG <polyline> element from a Faint Line."""
element = ET.Element('polyline')
points = obj.get_points()
# Fixme: duplication of create_simple_line
arrowhead = obj.get_arrowhead()
if arrowhead == 1 or arrowhead == 3:
state.arrowhead = True
if arrowhead == 2 or arrowhead == 3:
state.arrowtail = True
if arrowhead == 1:
angle = rad_angle(points[-2], points[-1], points[-4], points[-3])
x, y = arrow_line_end(points[-2], points[-1], angle,
obj.get_linewidth())
points[-2] = x
points[-1] = y
point_str = ",".join([str(pt) for pt in points])
element.set('points', point_str)
style = svg_line_style(obj, state) + svg_line_dash_style(obj) + "fill:none"
element.set('style', style)
if arrowhead == 1 or arrowhead == 3:
element.set('marker-end', 'url(#Arrowhead)')
if arrowhead == 2 or arrowhead == 3:
element.set('marker-start', 'url(#Arrowtail)')
return element
def create_simple_line(obj, state):
"""Creates an SVG <line> element from a Faint Line object."""
element = ET.Element('line')
points = obj.get_points()
assert len(points) == 4
element.set('x1', str(points[0]))
element.set('y1', str(points[1]))
arrow = obj.arrow
if arrow != 'none': # Fixme: Duplicates create_polyline
arrow_url = state.add_arrowhead(obj.fg)
# Fixme: Duplicates poly-line
if arrow == 'front':
angle = rad_angle(points[2], points[3], points[0], points[1])
x, y = arrow_line_end(points[2], points[3], angle, obj.linewidth)
element.set('x2', str(x))
element.set('y2', str(y))
else:
element.set('x2', str(points[2]))
element.set('y2', str(points[3]))
element.set('style', svg_line_style(obj, state) + svg_line_dash_style(obj))
if arrow != 'none':
# Fixme: Only arrow-head
element.set('marker-end', 'url(#{marker_id})'.format(marker_id=arrow_url))
return element
def create_polyline(obj, state):
"""Creates an SVG <polyline> element from a Faint Line."""
element = ET.Element('polyline')
points = obj.get_points()
arrow = obj.arrow
if arrow != 'none':
arrow_url = state.add_arrowhead(obj.fg)
if arrow == 'front':
angle = rad_angle(points[-2], points[-1], points[-4], points[-3])
x, y = arrow_line_end(points[-2], points[-1],
angle, obj.linewidth)
points[-2] = x
points[-1] = y
point_str = ",".join([str(pt) for pt in points])
element.set('points', point_str)
style = svg_line_style(obj, state) + svg_line_dash_style(obj) + "fill:none"
element.set('style', style)
if arrow != 'none': # Fixme: Duplicates create_line
element.set('marker-end', 'url(#{marker_id})'.format(marker_id=arrow_url))
return element
def parse_line(node, state):
"""Parses an SVG <line> element."""
state = state.updated(node)
points = [
svg_coord_attr(node.get(s, '0'), state)
for s in ('x1', 'y1', 'x2', 'y2')
]
if state.settings.arrow == 'front':
x0, y0, x1, y1 = points
angle = rad_angle(x0, y0, x1, y1)
x, y = arrow_line_end(x1, y1, angle, state.settings.linewidth)
points[-2] = x
points[-1] = y
return state.props.Line(points, state.settings)
def parse_polyline(node, state):
"""Parses an SVG <polyline>-element."""
state = state.updated(node)
points = parse_points(node.get('points'))
if state.settings.arrow == 'front':
x0, y0, x1, y1 = points[-4:]
angle = rad_angle(x0, y0, x1, y1)
x, y = arrow_line_end(x1, y1, angle, state.settings.linewidth)
points[-2] = x
points[-1] = y
if len(points) % 2 != 0:
state.add_warning("Odd number of coordinates for polyline%s." %
maybe_id_ref(node))
# SVG 1.1 F2 "Error processing" says
# Render polyline and polygons with invalid points up to the
# erroneous point.
points = points[:-1]
return state.props.Line(points, state.settings)