def effect(self):
#References: Minimum Requirements for Creating a DXF File of a 3D Model By Paul Bourke
# NURB Curves: A Guide for the Uninitiated By Philip J. Schneider
# The NURBS Book By Les Piegl and Wayne Tiller (Springer, 1995)
self.dxf_add("999\nDXF created by Inkscape\n")
self.dxf_add(dxf_templates.r14_header)
scale = 25.4/90.0
h = inkex.unittouu(self.document.getroot().xpath('@height', namespaces=inkex.NSS)[0])
path = '//svg:path'
for node in self.document.getroot().xpath(path, namespaces=inkex.NSS):
d = node.get('d')
sim = simplepath.parsePath(d)
if len(sim):
simplepath.scalePath(sim,scale,-scale)
simplepath.translatePath(sim,0,h*scale)
p = cubicsuperpath.CubicSuperPath(sim)
for sub in p:
for i in range(len(sub)-1):
s = sub[i]
e = sub[i+1]
if s[1] == s[2] and e[0] == e[1]:
self.dxf_line([s[1],e[1]])
elif (self.options.ROBO == 'true'):
self.ROBO_spline([s[1],s[2],e[0],e[1]])
else:
self.dxf_spline([s[1],s[2],e[0],e[1]])
if self.options.ROBO == 'true':
self.ROBO_output()
self.LWPOLY_output()
self.dxf_add(dxf_templates.r14_footer)
def inkscape(hpgl,svg,inkex):
layer = inkex.etree.SubElement(svg, 'g')
layer.set(inkex.addNS('label', 'inkscape'), 'InkCut Preview Layer')
layer.set(inkex.addNS('groupmode', 'inkscape'), 'layer')
spPU = [['M',[0,0]]]
spPD = []
for c in hpgl.split(';'):
if c[:2] == "PU":
p = map(int,c[2:].split(','))
spPD.append(['M',p])
spPU.append(['L',p])
elif c[:2] == "PD":
p = map(int,c[2:].split(','))
spPU.append(['M',p])
spPD.append(['L',p])
pu = inkex.etree.Element(inkex.addNS('path','svg'))
simplepath.scalePath(spPU,0.088582677,-0.088582677)
simplepath.translatePath(spPU,0,float(svg.get('height')))
style = {'fill' : 'none','stroke-opacity': '.8','stroke':'#116AAB'}
pu.set('style', simplestyle.formatStyle(style))
pu.set('d',simplepath.formatPath(spPU))
pd = inkex.etree.Element(inkex.addNS('path','svg'))
style = {'fill' : 'none','stroke-opacity': '.8','stroke':'#AB3011'}
pd.set('style', simplestyle.formatStyle(style))
pd.set('d',simplepath.formatPath(spPD))
# Connect elements together.
layer.append(pu)
layer.append(pd)
def inkscape(hpgl, svg, inkex):
layer = inkex.etree.SubElement(svg, 'g')
layer.set(inkex.addNS('label', 'inkscape'), 'InkCut Preview Layer')
layer.set(inkex.addNS('groupmode', 'inkscape'), 'layer')
spPU = [['M', [0, 0]]]
spPD = []
for c in hpgl.split(';'):
if c[:2] == "PU":
p = map(int, c[2:].split(','))
spPD.append(['M', p])
spPU.append(['L', p])
elif c[:2] == "PD":
p = map(int, c[2:].split(','))
spPU.append(['M', p])
spPD.append(['L', p])
pu = inkex.etree.Element(inkex.addNS('path', 'svg'))
simplepath.scalePath(spPU, 0.088582677, -0.088582677)
simplepath.translatePath(spPU, 0, float(svg.get('height')))
style = {'fill': 'none', 'stroke-opacity': '.8', 'stroke': '#116AAB'}
pu.set('style', simplestyle.formatStyle(style))
pu.set('d', simplepath.formatPath(spPU))
pd = inkex.etree.Element(inkex.addNS('path', 'svg'))
style = {'fill': 'none', 'stroke-opacity': '.8', 'stroke': '#AB3011'}
pd.set('style', simplestyle.formatStyle(style))
pd.set('d', simplepath.formatPath(spPD))
# Connect elements together.
layer.append(pu)
layer.append(pd)
def test_simplepath(self):
"""Test simplepath API"""
import simplepath
data = 'M12 34L56 78Z'
path = simplepath.parsePath(data)
self.assertEqual(path,
[['M', [12., 34.]], ['L', [56., 78.]], ['Z', []]])
d_out = simplepath.formatPath(path)
d_out = d_out.replace('.0', '')
self.assertEqual(data.replace(' ', ''), d_out.replace(' ', ''))
simplepath.translatePath(path, -3, -4)
self.assertEqual(path,
[['M', [9., 30.]], ['L', [53., 74.]], ['Z', []]])
simplepath.scalePath(path, 10, 20)
self.assertEqual(path,
[['M', [90., 600.]], ['L', [530., 1480.]], ['Z', []]])
simplepath.rotatePath(path, math.pi / 2.0, cx=5, cy=7)
approxed = [[code, approx(coords)] for (code, coords) in path]
self.assertEqual(
approxed, [['M', [-588., 92.]], ['L', [-1468., 532.]], ['Z', []]])
def hpgl(plot):
#create a preview svg
svg = etree.Element(inkex.addNS('svg', 'svg'))
svg.set('height', str(plot.dimensions[1]))
svg.set(
'width',
str(plot.getSize()[0] + plot.startPosition[0] +
plot.finishPosition[0]))
svg.set('version', '1.1')
"""
bg = inkex.etree.Element(inkex.addNS('rect','svg'))
style = {'fill' : 'none','stroke-opacity': '.8','stroke':'#212425','stroke-width':'10'}
bg.set('style', simplestyle.formatStyle(style))
bg.set('x','0')
bg.set('y','0')
bg.set('width',str(plot.dimensions[0]))
bg.set('height',svg.get('height'))
svg.append(bg)
"""
spPU = [['M', [0, 0]]]
spPD = []
for c in plot.toHPGL().split(';'):
if c[:2] == "PU":
p = map(int, c[2:].split(','))
spPD.append(['M', p])
spPU.append(['L', p])
elif c[:2] == "PD":
p = map(int, c[2:].split(','))
spPU.append(['M', p])
spPD.append(['L', p])
pu = inkex.etree.Element(inkex.addNS('path', 'svg'))
simplepath.scalePath(spPU, 0.088582677, -0.088582677)
simplepath.translatePath(spPU, 0, float(svg.get('height')))
style = {'fill': 'none', 'stroke-opacity': '.8', 'stroke': '#116AAB'}
pu.set('style', simplestyle.formatStyle(style))
pu.set('d', simplepath.formatPath(spPU))
pd = inkex.etree.Element(inkex.addNS('path', 'svg'))
style = {'fill': 'none', 'stroke-opacity': '.8', 'stroke': '#AB3011'}
pd.set('style', simplestyle.formatStyle(style))
pd.set('d', simplepath.formatPath(spPD))
# Connect elements together.
svg.append(pu)
svg.append(pd)
return svg
def hpgl(plot):
#create a preview svg
svg = etree.Element(inkex.addNS('svg','svg'))
svg.set('height',str(plot.dimensions[1]))
svg.set('width',str(plot.getSize()[0]+plot.startPosition[0]+plot.finishPosition[0]))
svg.set('version','1.1')
"""
bg = inkex.etree.Element(inkex.addNS('rect','svg'))
style = {'fill' : 'none','stroke-opacity': '.8','stroke':'#212425','stroke-width':'10'}
bg.set('style', simplestyle.formatStyle(style))
bg.set('x','0')
bg.set('y','0')
bg.set('width',str(plot.dimensions[0]))
bg.set('height',svg.get('height'))
svg.append(bg)
"""
spPU = [['M',[0,0]]]
spPD = []
for c in plot.toHPGL().split(';'):
if c[:2] == "PU":
p = map(int,c[2:].split(','))
spPD.append(['M',p])
spPU.append(['L',p])
elif c[:2] == "PD":
p = map(int,c[2:].split(','))
spPU.append(['M',p])
spPD.append(['L',p])
pu = inkex.etree.Element(inkex.addNS('path','svg'))
simplepath.scalePath(spPU,0.088582677,-0.088582677)
simplepath.translatePath(spPU,0,float(svg.get('height')))
style = {'fill' : 'none','stroke-opacity': '.8','stroke':'#116AAB'}
pu.set('style', simplestyle.formatStyle(style))
pu.set('d',simplepath.formatPath(spPU))
pd = inkex.etree.Element(inkex.addNS('path','svg'))
style = {'fill' : 'none','stroke-opacity': '.8','stroke':'#AB3011'}
pd.set('style', simplestyle.formatStyle(style))
pd.set('d',simplepath.formatPath(spPD))
# Connect elements together.
svg.append(pu)
svg.append(pd)
return svg
def resolve_path(node, transform=False):
path = simplepath.parsePath(node.attrib['d'])
if transform and 'transform' in node.attrib:
transforms = re.findall(
"([a-z,A-Z]+)\(([0-9,\s,.,-]*)\)",
node.attrib['transform'])
for k, vs in transforms:
sc = ' '
if ',' in vs:
sc = ','
args = map(lambda v: float(v.strip()), vs.split(sc))
if k == 'translate':
simplepath.translatePath(path, *args)
elif k == 'scale':
simplepath.scalePath(path, *args)
elif k == 'rotate':
simplepath.rotatePath(path, *args)
else:
error(
"Invalid path data: contains unsupported transform %s" % k)
return path
def effect(self):
#References: Minimum Requirements for Creating a DXF File of a 3D Model By Paul Bourke
# NURB Curves: A Guide for the Uninitiated By Philip J. Schneider
self.dxf_add("999\nDXF created by Inkscape\n0\nSECTION\n2\nENTITIES")
scale = 25.4/90.0
h = inkex.unittouu(inkex.xml.xpath.Evaluate('/svg/@height',self.document)[0].value)
path = '//path'
for node in inkex.xml.xpath.Evaluate(path,self.document):
d = node.attributes.getNamedItem('d').value
sim = simplepath.parsePath(d)
simplepath.scalePath(sim,scale,-scale)
simplepath.translatePath(sim,0,h*scale)
p = cubicsuperpath.CubicSuperPath(sim)
for sub in p:
for i in range(len(sub)-1):
s = sub[i]
e = sub[i+1]
if s[1] == s[2] and e[0] == e[1]:
self.dxf_line([s[1],e[1]])
else:
self.dxf_spline([s[1],s[2],e[0],e[1]])
self.dxf_add("\n0\nENDSEC\n0\nEOF\n")
def draw_crop_scale(stack, zoom): # draw, crop and scale letter image
image, width, height = draw(stack)
bbox = getPathBoundingBox(image)
simplepath.translatePath(image, -bbox[0], 0)
simplepath.scalePath(image, zoom / units, zoom / units)
return image, bbox[1] - bbox[0], bbox[3] - bbox[2]
def draw_crop_scale(stack, zoom): # draw, crop and scale letter image
image, width, height = draw(stack)
bbox = getPathBoundingBox(image)
simplepath.translatePath(image, -bbox[0], 0)
simplepath.scalePath(image, zoom / units, zoom / units)
return image, bbox[1] - bbox[0], bbox[3] - bbox[2]
def flip_cordinate_system(self, d, emsize, baseline):
pathdata = simplepath.parsePath(d)
simplepath.scalePath(pathdata, 1, -1)
simplepath.translatePath(pathdata, 0, int(emsize) - int(baseline))
return simplepath.formatPath(pathdata)
def effect(self):
# get user-entered params
x_scale = self.options.x_scale
y_scale = self.options.y_scale
t_start = self.options.t_start
t_end = self.options.t_end
n_steps = self.options.n_steps
fps = self.options.fps
dt = self.options.dt
x_eqn = self.options.x_eqn
y_eqn = self.options.y_eqn
x_size_eqn = self.options.x_size_eqn
y_size_eqn = self.options.y_size_eqn
theta_eqn = self.options.theta_eqn
# get doc root
svg = self.document.getroot()
doc_w = self.unittouu(svg.get('width'))
doc_h = self.unittouu(svg.get('height'))
# get selected items and validate
selected = pathmodifier.zSort(self.document.getroot(),
self.selected.keys())
if not selected:
inkex.errormsg(
'Exactly two objects must be selected: a rect and a template. See "help" for details.'
)
return
elif len(selected) != 2:
inkex.errormsg(
'Exactly two objects must be selected: a rect and a template. See "help" for details.'
)
return
# rect
rect = self.selected[selected[0]]
if not rect.tag.endswith('rect'):
inkex.errormsg('Bottom object must be rect. See "help" for usage.')
return
# object
obj = self.selected[selected[1]]
if not (obj.tag.endswith('path') or obj.tag.endswith('g')):
inkex.errormsg(
'Template object must be path or group of paths. See "help" for usage.'
)
return
if obj.tag.endswith('g'):
children = obj.getchildren()
if not all([ch.tag.endswith('path') for ch in children]):
msg = 'All elements of group must be paths, but they are: '
msg += ', '.join(['{}'.format(ch) for ch in children])
inkex.errormsg(msg)
return
objs = children
is_group = True
else:
objs = [obj]
is_group = False
# get rect params
w = float(rect.get('width'))
h = float(rect.get('height'))
x_rect = float(rect.get('x'))
y_rect = float(rect.get('y'))
# lower left corner
x_0 = x_rect
y_0 = y_rect + h
# get object path(s)
obj_ps = [simplepath.parsePath(obj_.get('d')) for obj_ in objs]
n_segs = [len(obj_p_) for obj_p_ in obj_ps]
obj_p = sum(obj_ps, [])
# compute travel parameters
if not n_steps:
# compute dt
if dt == 0:
dt = 1. / fps
ts = np.arange(t_start, t_end, dt)
else:
ts = np.linspace(t_start, t_end, n_steps)
# compute xs, ys, stretches, and rotations in arbitrary coordinates
xs = np.nan * np.zeros(len(ts))
ys = np.nan * np.zeros(len(ts))
x_sizes = np.nan * np.zeros(len(ts))
y_sizes = np.nan * np.zeros(len(ts))
thetas = np.nan * np.zeros(len(ts))
for ctr, t in enumerate(ts):
xs[ctr] = eval(x_eqn)
ys[ctr] = eval(y_eqn)
x_sizes[ctr] = eval(x_size_eqn)
y_sizes[ctr] = eval(y_size_eqn)
thetas[ctr] = eval(theta_eqn) * pi / 180
# ensure no Infs
if np.any(np.isinf(xs)):
raise Exception('Inf detected in x(t), please remove.')
return
if np.any(np.isinf(ys)):
raise Exception('Inf detected in y(t), please remove.')
return
if np.any(np.isinf(x_sizes)):
raise Exception('Inf detected in x_size(t), please remove.')
return
if np.any(np.isinf(y_sizes)):
raise Exception('Inf detected in y_size(t), please remove.')
return
if np.any(np.isinf(thetas)):
raise Exception('Inf detected in theta(t), please remove.')
return
# convert to screen coordinates
xs *= (w / x_scale)
xs += x_0
ys *= (-h / y_scale) # neg sign to invert y for inkscape screen
ys += y_0
# get obj center
b_box = simpletransform.refinedBBox(
cubicsuperpath.CubicSuperPath(obj_p))
c_x = 0.5 * (b_box[0] + b_box[1])
c_y = 0.5 * (b_box[2] + b_box[3])
# get rotation anchor
if any([k.endswith('transform-center-x') for k in obj.keys()]):
k_r_x = [
k for k in obj.keys() if k.endswith('transform-center-x')
][0]
k_r_y = [
k for k in obj.keys() if k.endswith('transform-center-y')
][0]
r_x = c_x + float(obj.get(k_r_x))
r_y = c_y - float(obj.get(k_r_y))
else:
r_x, r_y = c_x, c_y
paths = []
# compute new paths
for x, y, x_size, y_size, theta in zip(xs, ys, x_sizes, y_sizes,
thetas):
path = deepcopy(obj_p)
# move to origin
simplepath.translatePath(path, -x_0, -y_0)
# move rotation anchor accordingly
r_x_1 = r_x - x_0
r_y_1 = r_y - y_0
# scale
simplepath.scalePath(path, x_size, y_size)
# scale rotation anchor accordingly
r_x_2 = r_x_1 * x_size
r_y_2 = r_y_1 * y_size
# move to final location
simplepath.translatePath(path, x, y)
# move rotation anchor accordingly
r_x_3 = r_x_2 + x
r_y_3 = r_y_2 + y
# rotate
simplepath.rotatePath(path, -theta, cx=r_x_3, cy=r_y_3)
paths.append(path)
parent = self.current_layer
group = inkex.etree.SubElement(parent, inkex.addNS('g', 'svg'), {})
for path in paths:
if is_group:
group_ = inkex.etree.SubElement(group, inkex.addNS('g', 'svg'),
{})
path_components = split(path, n_segs)
for path_component, child in zip(path_components, children):
attribs = {k: child.get(k) for k in child.keys()}
attribs['d'] = simplepath.formatPath(path_component)
child_copy = inkex.etree.SubElement(
group_, child.tag, attribs)
else:
attribs = {k: obj.get(k) for k in obj.keys()}
attribs['d'] = simplepath.formatPath(path)
obj_copy = inkex.etree.SubElement(group, obj.tag, attribs)
def scalePath(self, x, y):
simplepath.scalePath(self.data, x, y)
def flip_cordinate_system(self, d, emsize, baseline): pathdata = simplepath.parsePath(d) simplepath.scalePath(pathdata, 1,-1) simplepath.translatePath(pathdata, 0, int(emsize) - int(baseline)) return simplepath.formatPath(pathdata)
def scalePath(self,x,y): simplepath.scalePath(self.data,x,y)
