def reflect(shape, position, _angle, keep_original):
"""Mirrors and copies the geometry across an invisible axis."""
if shape is None: return None
new_shape = shape.cloneAndClear()
for contour in shape.contours:
c = Contour()
for point in contour.points:
d = distance(point.x, point.y, position.x, position.y)
a = angle(point.x, point.y, position.x, position.y)
x, y = coordinates(position.x, position.y,
d * cos(radians(a - _angle)), 180 + _angle)
d = distance(point.x, point.y, x, y)
a = angle(point.x, point.y, x, y)
px, py = coordinates(point.x, point.y, d * 2, a)
c.addPoint(Point(px, py, point.type))
if contour.closed:
c.close()
new_shape.add(c)
if keep_original:
g = Geometry()
g.add(shape)
g.add(new_shape)
return g
return new_shape
def reflect(shape, position, _angle, keep_original):
"""Mirrors and copies the geometry across an invisible axis."""
if shape is None: return None
new_shape = shape.cloneAndClear()
for contour in shape.contours:
c = Contour()
for point in contour.points:
d = distance(point.x, point.y, position.x, position.y)
a = angle(point.x, point.y, position.x, position.y)
x, y = coordinates(position.x, position.y, d * cos(radians(a - _angle)), 180 + _angle)
d = distance(point.x, point.y, x, y)
a = angle(point.x, point.y, x, y)
px, py = coordinates(point.x, point.y, d * 2, a)
c.addPoint(Point(px, py, point.type))
if contour.closed:
c.close()
new_shape.add(c)
if keep_original:
g = Geometry()
g.add(shape)
g.add(new_shape)
return g
return new_shape
def delete_points(path, bounding, delete_selected=True):
if path is None or bounding is None: return None
new_path = Path(path, False) # cloneContours = False
for old_contour in path.contours:
new_contour = Contour()
for point in old_contour.points:
if bounding.contains(point) == delete_selected:
new_contour.addPoint(Point(point.x, point.y, point.type))
new_contour.closed = old_contour.closed
new_path.add(new_contour)
return new_path
def snap(shape, distance, strength, position=Point.ZERO):
"""Snap geometry to a grid."""
def _snap(v, offset=0.0, distance=10.0, strength=1.0):
return (v * (1.0-strength)) + (strength * round(v / distance) * distance)
if shape is None: return None
new_shape = shape.cloneAndClear()
strength /= 100.0
for contour in shape.contours:
c = Contour()
for pt in contour.points:
x = _snap(pt.x + position.x, position.x, distance, strength) - position.x
y = _snap(pt.y + position.y, position.y, distance, strength) - position.y
c.addPoint(Point(x, y, pt.type))
c.closed = contour.closed
new_shape.add(c)
return new_shape