def shade(self, stroke):
# normals are stored in a tuple, so they don't update when we reposition vertices.
normals = tuple(stroke_normal(stroke))
for svert, normal in zip(stroke, normals):
a = self.start + svert.u * (self.end - self.start)
svert.point += (normal * a) + self.xy
stroke.update_length()
def shade(self, stroke):
# normals are stored in a tuple, so they don't update when we reposition vertices.
normals = tuple(stroke_normal(stroke))
for svert, normal in zip(stroke, normals):
a = self.start + svert.u * (self.end - self.start)
svert.point += (normal * a) + self.xy
stroke.update_length()
def shade(self, stroke):
# normals are stored in a tuple, so they don't update when we reposition vertices.
normals = tuple(stroke_normal(stroke))
distances = iter_distance_along_stroke(stroke)
for svert, distance, normal in zip(stroke, distances, normals):
n = normal * self._amplitude * cos(distance / self._wavelength * 2 * pi + self._phase)
svert.point += n
stroke.update_length()
def shade(self, stroke):
# normals are stored in a tuple, so they don't update when we reposition vertices.
normals = tuple(stroke_normal(stroke))
distances = iter_distance_along_stroke(stroke)
coeff = 1 / self.wavelength * 2 * pi
for svert, distance, normal in zip(stroke, distances, normals):
n = normal * self.amplitude * cos(distance * coeff + self.phase)
svert.point += n
stroke.update_length()