def scale(shape, value, pivot=Coordinate(0, 0)):
'''In place scaling.
- `shape` is the shape to be rotated.
- `value` is the scaling value. Can be a scalar or an (x, y) coordinate.
- `pivot` is the Coordinate around which the shape will be scaled.
'''
from chiplotle.tools.geometrytools.scale import scale
t = TransformVisitor(scale)
t.visit(shape, value, pivot)
def scale(shape, value, pivot = Coordinate(0, 0)):
'''In place scaling.
- `shape` is the shape to be rotated.
- `value` is the scaling value. Can be a scalar or an (x, y) coordinate.
- `pivot` is the Coordinate around which the shape will be scaled.
'''
from chiplotle.tools.geometrytools.scale import scale
t = TransformVisitor(scale)
t.visit(shape, value, pivot)
def rotate(shape, angle, pivot=(0, 0)):
"""In place rotation.
- `shape` is the shape to be rotated.
- `angle` is the angle (in radians) of rotation.
- `pivot` is the center of rotation. Must be a Coordinate or (x, y) pair.
"""
def rotate(coords, angle, pivot=pivot):
return rotate_2d(coords, angle, pivot)
t = TransformVisitor(rotate)
t.visit(shape, angle, pivot)
def rotate(shape, angle, pivot=(0, 0)):
"""In place rotation.
- `shape` is the shape to be rotated.
- `angle` is the angle (in radians) of rotation.
- `pivot` is the center of rotation. Must be a Coordinate or (x, y) pair.
"""
def rotate(coords, angle, pivot=pivot):
return rotate_2d(coords, angle, pivot)
t = TransformVisitor(rotate)
t.visit(shape, angle, pivot)
def offset(shape, value):
'''In place offsetting.
- `shape` is the shape to be rotated.
- `value` is the offset value. Can be a scalar or an (x, y) coordinate.
'''
if isinstance(value, (list, tuple)):
value = Coordinate(*value)
def offset(coords, value):
return coords + value
t = TransformVisitor(offset)
t.visit(shape, value)
def offset(shape, value):
'''In place offsetting.
- `shape` is the shape to be rotated.
- `value` is the offset value. Can be a scalar or an (x, y) coordinate.
'''
if isinstance(value, (list, tuple)):
value = Coordinate(*value)
def offset(coords, value):
return coords + value
t = TransformVisitor(offset)
t.visit(shape, value)
def perpendicular_noise(shape, value):
"""Distort shape by adding noise perpendiculary to the path.
This is an in-place destructive transformation; no new shapes are created.
- `shape` is the shape to be noisified.
- `value` must be a scalar defining the range of the noise
for displacement.
"""
def perpnoise(coords, value):
result = []
d_coords = difference(coords)
for coord, d_coord in zip(coords[:-1], d_coords):
wiggle = random.randrange(-value, value)
perp = ~d_coord
xy = coord + perp / perp.magnitude * wiggle
result.append(xy)
return CoordinateArray(result)
t = TransformVisitor(perpnoise)
t.visit(shape, value)
def perpendicular_noise(shape, value):
'''Distort shape by adding noise perpendiculary to the path.
This is an in-place destructive transformation; no new shapes are created.
- `shape` is the shape to be noisified.
- `value` must be a scalar defining the range of the noise
for displacement.
'''
def perpnoise(coords, value):
result = [ ]
d_coords = difference(coords)
for coord, d_coord in zip(coords[:-1], d_coords):
wiggle = random.randrange(-value, value)
perp = ~d_coord
xy = coord + perp / perp.magnitude * wiggle
result.append(xy)
return CoordinateArray(result)
t = TransformVisitor(perpnoise)
t.visit(shape, value)
def noise(shape, value):
'''Distort shape by adding noise.
- `value` can be a scalar or a tuple (x, y) that sets the range of the
noise for the x and y coordinates.
'''
def noisify(coords, value):
try:
x, y = value
except TypeError:
x = y = value
result = [ ]
for point in coords:
x_wiggle = random.randrange(-x, x)
y_wiggle = random.randrange(-y, y)
xy = point + Coordinate(x_wiggle, y_wiggle)
result.append(xy)
return CoordinateArray(result)
t = TransformVisitor(noisify)
t.visit(shape, value)
