def _setup(self):
""" setup calculation values """
self.pos_radius = distance(self.center, self.dimlinepos)
self.radius = distance(self.center, self.start)
self.start_vector = (self.start - self.center).normalize()
self.end_vector = (self.end - self.center).normalize()
self.start_angle = self.start_vector.angle_rad
self.end_angle = self.end_vector.angle_rad
def _get_dimvalue_text(self, section):
""" get the dimension value as text, distance from point1 to point2 """
override = self.text_override[section]
if len(override):
return override
point1, point2 = self._get_section_points(section)
dimvalue = distance(point1, point2) * self.prop('scale')
return self.format_dimtext(dimvalue)
def _draw_extension_lines(self, layout):
""" build the extension lines entities """
dimextlinegap = self.prop('dimextlinegap')
attribs = {
'color': self.prop('dimlinecolor'),
'layer': self.prop('layer'),
}
for dimline_point, target_point in zip(self.dimline_points,
self.measure_points):
if distance(dimline_point, target_point) > max(
dimextlinegap, DIMENSIONS_MIN_DISTANCE):
direction_vector = (target_point - dimline_point).normalize()
target_point = target_point - (direction_vector *
dimextlinegap)
layout.add_line(
start=dimline_point,
end=target_point,
dxfattribs=attribs,
)
def _setup(self):
self.target_vector = (self.target - self.center).normalize()
self.radius = distance(self.center, self.target)