def load_svg(cls, svg_path):
with warnings.catch_warnings(record=True) as warning_list:
path_group = PathGroup.load_svg(svg_path, on_error=parse_warning)
if warning_list:
logger.warning('The following paths could not be parsed properly '
'and have been ignored:\n%s' % \
'\n'.join([str(w.message) for w in warning_list]))
# Assign the color blue to all paths that have no colour assigned
for p in path_group.paths.values():
if p.color is None:
p.color = (0, 0, 255)
# If the first and last vertices in a loop are too close together,
# it can cause tessellation to fail (Ticket # 106).
for loop in p.loops:
# distance between first and last point in a loop
d = sqrt((loop.verts[0][0] - loop.verts[-1][0])**2 + \
(loop.verts[0][1] - loop.verts[-1][1])**2)
# diagonal across device bounding box
device_diag = sqrt(path_group.get_bounding_box()[2]**2 + \
path_group.get_bounding_box()[3]**2)
# If the distance between the vertices is below a threshold,
# remove the last vertex (the threshold is scaled by the device
# diagonal so that we are insensitive to device size).
if d/device_diag < 1e-3:
loop.verts.pop()
dmf_device = DmfDevice()
dmf_device.add_path_group(path_group)
dmf_device.init_body_group()
return dmf_device
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of Jonathan Hartley nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''
import gtk
from svg_model.body_group import BodyGroup
from svg_model.path_group import PathGroup
if __name__ == '__main__':
path_group = PathGroup.load_svg('circles.svg')
body_group = BodyGroup(path_group.paths)
def translate(coords, x, y):
return [(c[0] + x, c[1] + y) for c in coords]
def on_click(widget, event):
x, y, width, height = path_group.get_bounding_box()
coords = translate([event.get_coords()], -width / 2., -height / 2.)[0]
shape = body_group.space.point_query_first(coords)
if shape:
print body_group.get_name(shape.body)
def _upgrade(self):
"""
Upgrade the serialized object if necessary.
Raises:
FutureVersionError: file was written by a future version of the
software.
"""
logger.debug("[DmfDevice]._upgrade()")
version = Version.fromstring(self.version)
logger.debug('[DmfDevice] version=%s, class_version=%s' % (str(version), self.class_version))
if version > Version.fromstring(self.class_version):
logger.debug('[DmfDevice] version>class_version')
raise FutureVersionError
elif version < Version.fromstring(self.class_version):
if version < Version(0,1):
self.version = str(Version(0,1))
self.scale = None
logger.info('[DmfDevice] upgrade to version %s' % self.version)
if version < Version(0,2):
self.version = str(Version(0,2))
for id, e in self.electrodes.items():
if hasattr(e, "state"):
del self.electrodes[id].state
logger.info('[DmfDevice] upgrade to version %s' % self.version)
if version < Version(0,3):
# Upgrade to use pymunk
self.version = str(Version(0,3))
x_min = min([e.x_min for e in self.electrodes.values()])
x_max = max([e.x_max for e in self.electrodes.values()])
y_min = min([e.y_min for e in self.electrodes.values()])
y_max = max([e.y_max for e in self.electrodes.values()])
boundary = Path([Loop([(x_min, y_min), (x_min, y_max),
(x_max, y_max), (x_max, y_min)])])
traced_paths = {}
tracer = LoopTracer()
for id, e in self.electrodes.iteritems():
try:
path_tuples = []
for command in e.path:
keys_ok = True
for k in ['command', 'x', 'y']:
if k not in command:
# Missing a parameter, skip
keys_ok = False
if not keys_ok:
continue
path_tuples.append(
(command['command'], float(command['x']),
float(command['y'])))
path_tuples.append(('Z',))
loops = tracer.to_loops(path_tuples)
p = ColoredPath(loops)
p.color = (0, 0, 255)
traced_paths[str(id)] = p
except ParseError:
pass
except KeyError:
pass
path_group = PathGroup(traced_paths, boundary)
electrodes = self.electrodes
self.electrodes = {}
self.add_path_group(path_group)
for id, e in electrodes.iteritems():
if str(id) in self.name_electrode_map:
eid = self.name_electrode_map[str(id)]
self.electrodes[eid].channels = e.channels
del electrodes
logger.info('[DmfDevice] upgrade to version %s' % self.version)