def _circular_arc_3_point_close(self, element):
p1, chunk = self.read_point(element.params)
p2, chunk = self.read_point(chunk)
p3, chunk = self.read_point(chunk)
flag = self.read_enum(chunk)[0]
p1, p2, p3 = libgeom.apply_trafo_to_points([p1, p2, p3],
self.get_trafo())
center = libgeom.circle_center_by_3points(p1, p2, p3)
if not center:
return
r = libgeom.distance(center, p1)
angle1 = libgeom.get_point_angle(p3, center)
angle2 = libgeom.get_point_angle(p1, center)
x, y = center
rect = [x - r, y - r, 2 * r, 2 * r]
flag = {
0: sk2const.ARC_PIE_SLICE,
1: sk2const.ARC_CHORD
}.get(flag, sk2const.ARC_CHORD)
circle = sk2_model.Circle(self.layer.config,
self.layer,
rect,
angle1=angle1,
angle2=angle2,
circle_type=flag,
style=self.get_style(fill=True))
self.layer.childs.append(circle)
def tr_arc(self, chunk, arc_type=sk2const.ARC_ARC):
ye, xe, ys, xs, bottom, right, top, left = get_data('<hhhhhhhh', chunk)
left, top = apply_trafo_to_point([left, top], self.get_trafo())
right, bottom = apply_trafo_to_point([right, bottom], self.get_trafo())
xs, ys = apply_trafo_to_point([xs, ys], self.get_trafo())
xe, ye = apply_trafo_to_point([xe, ye], self.get_trafo())
if left != right and top != bottom:
t = [(right - left) / 2, 0, 0, (bottom - top) / 2,
(right + left) / 2, (top + bottom) / 2]
t = libgeom.invert_trafo(t)
xs, ys = apply_trafo_to_point([xs, ys], t)
xe, ye = apply_trafo_to_point([xe, ye], t)
end_angle = libgeom.get_point_angle([xs, ys], [0.0, 0.0])
start_angle = libgeom.get_point_angle([xe, ye], [0.0, 0.0])
else:
start_angle = end_angle = 0.0
cfg = self.layer.config
sk2_style = self.get_style()
if arc_type == sk2const.ARC_ARC:
sk2_style[0] = []
rect = [left, top, right - left, bottom - top]
ellipse = sk2_model.Circle(cfg, self.layer, rect, start_angle,
end_angle, arc_type, sk2_style)
self.layer.childs.append(ellipse)
def _circle(self, element):
center, chunk = self.read_point(element.params)
r = self.read_vdc(chunk)[0] * self.scale
x, y = libgeom.apply_trafo_to_point(center, self.get_trafo())
rect = [x - r, y - r, 2 * r, 2 * r]
circle = sk2_model.Circle(self.layer.config, self.layer, rect,
style=self.get_style(fill=True))
self.layer.childs.append(circle)
def tr_ellipse(self, chunk):
bottom, right, top, left = get_data('<hhhh', chunk)
left, top = apply_trafo_to_point([left, top], self.get_trafo())
right, bottom = apply_trafo_to_point([right, bottom], self.get_trafo())
cfg = self.layer.config
sk2_style = self.get_style()
rect = [left, top, right - left, bottom - top]
ellipse = sk2_model.Circle(cfg, self.layer, rect, style=sk2_style)
self.layer.childs.append(ellipse)
def translate_ellipse(self, dest_parent, source_ellipse):
trafo = self.get_sk2_trafo(source_ellipse)
angle1 = source_ellipse.start_angle
angle2 = source_ellipse.end_angle
arc_type = SK2_ARC_TYPES[source_ellipse.arc_type]
rect = [-1.0, -1.0, 2.0, 2.0]
dest_ellipse = sk2_model.Circle(dest_parent.config, dest_parent, rect,
angle1, angle2, arc_type)
dest_ellipse.trafo = libgeom.multiply_trafo(dest_ellipse.trafo, trafo)
dest_ellipse.initial_trafo = [] + dest_ellipse.trafo
set_sk2_style(source_ellipse.properties, dest_ellipse)
return dest_ellipse
def _ellipse(self, element):
center, chunk = self.read_point(element.params)
cdp1, chunk = self.read_point(chunk)
cdp2, chunk = self.read_point(chunk)
cdp3 = libgeom.contra_point(cdp1, center)
cdp4 = libgeom.contra_point(cdp2, center)
bbox = libgeom.sum_bbox(cdp1 + cdp2, cdp3 + cdp4)
bbox = libgeom.apply_trafo_to_bbox(bbox, self.get_trafo())
rect = libgeom.bbox_to_rect(bbox)
circle = sk2_model.Circle(self.layer.config, self.layer, rect,
style=self.get_style(fill=True))
self.layer.childs.append(circle)
def translate_ellipse(self, obj, cfg):
cx = obj.center_x
cy = obj.center_y
rx = obj.radius_x
ry = obj.radius_y
props = dict(
rect=[cx - rx, cy - ry, 2.0 * rx, 2.0 * ry],
style=self.get_style(obj),
)
new_obj = sk2_model.Circle(cfg, **props)
trafo_rotate = libgeom.trafo_rotate(-obj.angle, cx, cy)
trafo = libgeom.multiply_trafo(new_obj.trafo, trafo_rotate)
new_obj.trafo = libgeom.multiply_trafo(trafo, self.trafo)
return new_obj
def translate_arc(self, obj, cfg):
cx = obj.center_x
cy = obj.center_y
r = libgeom.distance((cx, cy), (obj.x1, obj.y1))
end_angle = libgeom.get_point_angle((obj.x1, obj.y1), (cx, cy))
start_angle = libgeom.get_point_angle((obj.x3, obj.y3), (cx, cy))
if not obj.direction:
start_angle, end_angle = end_angle, start_angle
circle_type = FIG_TO_SK2_ARC.get(obj.sub_type, sk2const.ARC_PIE_SLICE)
props = dict(circle_type=circle_type,
rect=[cx - r, cy - r, 2.0 * r, 2.0 * r],
style=self.get_style(obj),
angle1=start_angle,
angle2=end_angle)
new_obj = sk2_model.Circle(cfg, **props)
new_obj.trafo = libgeom.multiply_trafo(new_obj.trafo, self.trafo)
return new_obj
def _circular_arc_centre(self, element):
center, chunk = self.read_point(element.params)
p1, chunk = self.read_point(chunk)
p2, chunk = self.read_point(chunk)
center, p1, p2 = libgeom.apply_trafo_to_points(
[center, p1, p2], self.get_trafo())
r = self.read_vdc(chunk)[0] * self.scale
angle1 = libgeom.get_point_angle(p1, center)
angle2 = libgeom.get_point_angle(p2, center)
x, y = center
rect = [x - r, y - r, 2 * r, 2 * r]
circle = sk2_model.Circle(self.layer.config, self.layer, rect,
angle1=angle1,
angle2=angle2,
circle_type=sk2const.ARC_ARC,
style=self.get_style(stroke=True))
self.layer.childs.append(circle)
def _circular_arc_centre_close(self, element):
center, chunk = self.read_point(element.params)
p1, chunk = self.read_point(chunk)
p2, chunk = self.read_point(chunk)
flag = self.read_enum(chunk)[0]
center, p1, p2 = libgeom.apply_trafo_to_points(
[center, p1, p2], self.get_trafo())
r = self.read_vdc(chunk)[0] * self.scale
angle1 = libgeom.get_point_angle(p1, center)
angle2 = libgeom.get_point_angle(p2, center)
x, y = center
rect = [x - r, y - r, 2 * r, 2 * r]
flag = {0: sk2const.ARC_PIE_SLICE,
1: sk2const.ARC_CHORD}.get(flag, sk2const.ARC_CHORD)
circle = sk2_model.Circle(self.layer.config, self.layer, rect,
angle1=angle1,
angle2=angle2,
circle_type=flag,
style=self.get_style(fill=True))
self.layer.childs.append(circle)
def _circular_arc_3_point(self, element):
p1, chunk = self.read_point(element.params)
p2, chunk = self.read_point(chunk)
p3, chunk = self.read_point(chunk)
p1, p2, p3 = libgeom.apply_trafo_to_points(
[p1, p2, p3], self.get_trafo())
center = libgeom.circle_center_by_3points(p1, p2, p3)
if not center:
return
r = libgeom.distance(center, p1)
angle1 = libgeom.get_point_angle(p3, center)
angle2 = libgeom.get_point_angle(p1, center)
x, y = center
rect = [x - r, y - r, 2 * r, 2 * r]
circle = sk2_model.Circle(self.layer.config, self.layer, rect,
angle1=angle1,
angle2=angle2,
circle_type=sk2const.ARC_ARC,
style=self.get_style(stroke=True))
self.layer.childs.append(circle)