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####################################################################################################
#
# Patro - A Python library to make patterns for fashion design
# Copyright (C) 2017 Fabrice Salvaire
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
####################################################################################################
"""This module defines all the sketch operations supported by the pattern engine, e.g. the
intersection between two lines.
A sketch operation must be build from the corresponding method of the Pattern class.
####################################################################################################
import logging
from Patro.Common.Object import ObjectGlobalIdMixin
from Patro.GeometryEngine.Bezier import CubicBezier2D
from Patro.GeometryEngine.Line import Line2D
from Patro.GeometryEngine.Segment import Segment2D
from Patro.GeometryEngine.Vector import Vector2D
from .Calculator import Expression
####################################################################################################
_module_logger = logging.getLogger(__name__)
####################################################################################################
def quote(x):
return "'{}'".format(x)
####################################################################################################
### _logger = _module_logger.getChild('SketchOperationMetaClass')
###
### ##############################################
###
### def __init__(cls, class_name, super_classes, class_attribute_dict):
### # cls._logger.debug(str((cls, class_name, super_classes, class_attribute_dict)))
### type.__init__(cls, class_name, super_classes, class_attribute_dict)
####################################################################################################
# metaclass = SketchOperationMetaClass
class SketchOperation(ObjectGlobalIdMixin):
_logger = _module_logger.getChild('SketchOperation')
##############################################
# Valentina set an incremental integer id for each calculation (entity)
# id is used to identify operation, see _get_operation
try:
super().__init__(id)
except ValueError:
raise NameError("id {} is already attributed".format(id))
self._dag_node = self._dag.add_node(pyid(self), data=self)
##############################################
@property
@property
def dependencies(self):
return self._dependencies
##############################################
"""Return the corresponding :obj:`SketchOperation` object where *operation* can be
:obj:`SketchOperation` instance, an id or a name.
if isinstance(operation, SketchOperation):
return operation
# elif isinstance(operation, (int, str)):
return self._sketch.get_operation(operation)
##############################################
self.eval_internal()
##############################################
def eval_internal(self):
"""Code to evaluate the operation in subclasses, i.e. to compute internal states like points."""
##############################################
def _init_args(self):
# cf. to_python
args = self.__init__.__code__.co_varnames
args = args[2:-1] # remove self, sketch, id
return args
##############################################
"""Return the Python code for the operation"""
args = self._init_args()
values = []
for arg in args:
value = getattr(self, arg)
# if arg == 'sketch':
# value_str = 'sketch'
# if isinstance(value, Sketch):
# value_str = 'sketch'
if value is None:
value_str = 'None'
elif isinstance(value, (int, float)):
value_str = str(value)
elif isinstance(value, str):
value_str = quote(value)
# elif isinstance(value, SketchOperation):
# value_str = str(value.id)
elif isinstance(value, Point):
value_str = quote(value.name)
elif isinstance(value, Expression):
if value.is_float():
value_str = str(value)
else:
value_str = quote(value)
elif isinstance(value, Vector2D):
value_str = 'Vector2D({0.x}, {0.y})'.format(value)
else:
value_str = ''
values.append(value_str)
kwargs = ', '.join(['sketch'] + [key + '=' + value for key, value in zip(args, values)])
return self.__class__.__name__ + '(' + kwargs + ')'
##############################################
dag = self._dag
for point in points:
self._dependencies.add(point)
self._dag_node.connect_ancestor(dag[pyid(point)])
##############################################
# def _connect_ancestor_for_expressions(self, *expressions):
# for expression in expressions:
# self._connect_ancestor(*expression.dependencies)
def _iter_on_expressions(self):
"""Lookup for :obj:`Expression` in the object and yield them."""
for attribute in self.__dict__.values():
if isinstance(attribute, Expression):
yield attribute
def connect_ancestor_for_expressions(self):
# Expression's dependencies are only known after compilation
for expression in self._iter_on_expressions():
self._connect_ancestor(*expression.dependencies)
##############################################
# @property
def geometry(self):
raise NotImplementedError('Geometry is not implemented for {}'.format(self))
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####################################################################################################
class LinePropertiesMixin:
##############################################
def __init__(self, line_style, line_color):
self._line_color = line_color
self._line_style = line_style
##############################################
@property
def line_color(self):
return self._line_color
@line_color.setter
def line_color(self, value):
self._line_color = value
@property
def line_style(self):
return self._line_style
@line_style.setter
def line_style(self, value):
self._line_style = value
####################################################################################################
class FirstSecondPointMixin:
##############################################
def __init__(self, first_point, second_point):
self._first_point = self._get_operation(first_point)
self._second_point = self._get_operation(second_point)
self._connect_ancestor(self._first_point, self._second_point)
##############################################
@property
def first_point(self):
return self._first_point
@property
def second_point(self):
return self._second_point
####################################################################################################
class BasePointMixin:
##############################################
def __init__(self, base_point):
self._base_point = self._get_operation(base_point)
##############################################
@property
def base_point(self):
return self._base_point
####################################################################################################
class LengthMixin:
##############################################
def __init__(self, length):
self._length = Expression(length, self._sketch.calculator)
# self._connect_ancestor_for_expressions(self._length)
##############################################
@property
def length(self):
return self._length
####################################################################################################
class AngleMixin:
##############################################
def __init__(self, angle):
self._angle = Expression(angle, self._sketch.calculator)
# self._connect_ancestor_for_expressions(self._angle)
##############################################
@property
def angle(self):
return self._angle
####################################################################################################
class LengthAngleMixin(LengthMixin, AngleMixin):
##############################################
def __init__(self, length, angle):
LengthMixin.__init__(self, length)
AngleMixin.__init__(self, angle)
####################################################################################################
##############################################
def __init__(self, sketch, name, label_offset, id=None):
SketchOperation.__init__(self, sketch, id)
self._name = name
self._label_offset = label_offset
self._vector = None
##############################################
@property
def name(self):
return self._name
@property
def label_offset(self):
return self._label_offset
@property
def vector(self):
return self._vector
##############################################
def _post_eval_internal(self):
self._logger.debug('{0._name} {0._vector}'.format(self))
##############################################
def geometry(self):
return self._vector.clone()
####################################################################################################
class SinglePoint(Point):
##############################################
x, y,
label_offset,
Point.__init__(self, sketch, name, label_offset, id)
self._x = Expression(x, sketch.calculator)
self._y = Expression(y, sketch.calculator)
# self._connect_ancestor_for_expressions(self._x, self._y)
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##############################################
@property
def x(self):
return self._x
@property
def y(self):
return self._y
##############################################
def __repr__(self):
return self.__class__.__name__ + ' {0._name} = ({0._x}, {0._y})'.format(self)
##############################################
def eval_internal(self):
self._vector = Vector2D(self._x.value, self._y.value)
self._post_eval_internal()
####################################################################################################
class AlongLinePoint(Point, LinePropertiesMixin, FirstSecondPointMixin, LengthMixin):
"""Construct a point from two points defining a direction and a length"""
##############################################
first_point, second_point, length,
label_offset,
line_style=None, line_color=None,
Point.__init__(self, sketch, name, label_offset, id)
LinePropertiesMixin.__init__(self, line_style, line_color)
FirstSecondPointMixin.__init__(self, first_point, second_point)
LengthMixin.__init__(self, length)
##############################################
def __repr__(self):
return self.__class__.__name__ + ' {0._name} = ({0._first_point.name}, {0._second_point.name}, {0._length})'.format(self)
##############################################
def eval_internal(self):
vector = self._second_point.vector - self._first_point.vector
self._sketch.calculator.set_current_segment(vector)
self._vector = self._first_point.vector + vector.to_normalised()*self._length.value
self._sketch.calculator.unset_current_segment()
self._post_eval_internal()
####################################################################################################
class EndLinePoint(Point, LinePropertiesMixin, BasePointMixin, LengthAngleMixin):
"""Construct a point from a base point and a vector defined by an angle and a length"""
##############################################
base_point, angle, length,
label_offset,
line_style=None, line_color=None,
Point.__init__(self, sketch, name, label_offset, id)
LinePropertiesMixin.__init__(self, line_style, line_color)
BasePointMixin.__init__(self, base_point)
LengthAngleMixin.__init__(self, length, angle)
##############################################
def __repr__(self):
return self.__class__.__name__ + ' {0._name} = ({0._base_point.name}, {0._angle}, {0._length})'.format(self)
##############################################
def eval_internal(self):
self._vector = self._base_point._vector + Vector2D.from_angle(self._angle.value)*self._length.value
self._post_eval_internal()
####################################################################################################
class LineIntersectPoint(Point):
"""Construct a point from the intersection of two segments defined by four points"""
##############################################
point1_line1, point2_line1, point1_line2, point2_line2,
label_offset,
Point.__init__(self, sketch, name, label_offset, id)
self._point1_line1 = self._get_operation(point1_line1)
self._point2_line1 = self._get_operation(point2_line1)
self._point1_line2 = self._get_operation(point1_line2)
self._point2_line2 = self._get_operation(point2_line2)
self._connect_ancestor(self._point1_line1, self._point2_line1,
self._point1_line2, self._point2_line2)
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##############################################
@property
def point1_line1(self):
return self._point1_line1
@property
def point2_line1(self):
return self._point2_line1
@property
def point1_line2(self):
return self._point1_line2
@property
def point2_line2(self):
return self._point2_line2
##############################################
def __repr__(self):
return self.__class__.__name__ + ' {0._name} = ({0._point1_line1.name}, {0._point2_line1.name}, {0._point1_line2.name}, {0._point2_line2.name})'.format(self)
##############################################
def eval_internal(self):
line1 = Line2D.from_two_points(self._point1_line1.vector, self._point2_line1.vector)
line2 = Line2D.from_two_points(self._point1_line2.vector, self._point2_line2.vector)
self._vector = line1.intersection(line2)
self._post_eval_internal()
####################################################################################################
class NormalPoint(Point, LinePropertiesMixin, FirstSecondPointMixin, LengthAngleMixin):
"""Construct a point at a distance of the first point on the rotated normal of a line defined by two points"""
##############################################
first_point, second_point, angle, length,
label_offset,
line_style=None, line_color=None,
Point.__init__(self, sketch, name, label_offset, id)
LinePropertiesMixin.__init__(self, line_style, line_color)
FirstSecondPointMixin.__init__(self, first_point, second_point)
LengthAngleMixin.__init__(self, length, angle)
##############################################
def __repr__(self):
return self.__class__.__name__ + ' {0._name} = ({0._first_point.name}, {0._second_point.name}, {0._angle}, {0._length})'.format(self)
##############################################
def eval_internal(self):
vector = self._second_point.vector - self._first_point.vector
self._sketch.calculator.set_current_segment(vector)
direction = vector.to_normalised()
angle = self._angle.value
if angle:
self._vector = self._first_point.vector + direction*self._length.value
self._sketch.calculator.unset_current_segment()
self._post_eval_internal()
####################################################################################################
class PointOfIntersection(Point, FirstSecondPointMixin):
"""Construct a point from the x coordinate of a fist point and the y coordinate of a second point"""
##############################################
first_point, second_point,
label_offset,
Point.__init__(self, sketch, name, label_offset, id)
FirstSecondPointMixin.__init__(self, first_point, second_point)
##############################################
def __repr__(self):
return self.__class__.__name__ + ' {0._name} = ({0._first_point.name}, {0._second_point.name})'.format(self)
##############################################
def eval_internal(self):
self._vector = Vector2D(self._first_point.vector.x, self._second_point.vector.y)
self._post_eval_internal()
####################################################################################################
class Line(SketchOperation, LinePropertiesMixin, FirstSecondPointMixin):
##############################################
first_point, second_point,
line_style='solid', line_color='black',
id=None,
):
SketchOperation.__init__(self, sketch, id)
LinePropertiesMixin.__init__(self, line_style, line_color)
FirstSecondPointMixin.__init__(self, first_point, second_point)
##############################################
def __repr__(self):
return self.__class__.__name__ + ' ({0._first_point.name}, {0._second_point.name})'.format(self)
##############################################
def eval_internal(self):
pass
##############################################
def geometry(self):
return Segment2D(self._first_point.vector, self._second_point.vector)
####################################################################################################
class SimpleInteractiveSpline(SketchOperation, LinePropertiesMixin, FirstSecondPointMixin):
""""Construct a quadratic Bezier curve from two extremity points and two control points"""
##############################################
first_point, second_point,
angle1, length1,
angle2, length2,
line_style='solid', line_color='black',
id=None,
):
SketchOperation.__init__(self, sketch, id)
LinePropertiesMixin.__init__(self, line_style, line_color)
FirstSecondPointMixin.__init__(self, first_point, second_point)
self._angle1 = Expression(angle1, sketch.calculator)
self._length1 = Expression(length1, sketch.calculator)
self._angle2 = Expression(angle2, sketch.calculator)
self._length2 = Expression(length2, sketch.calculator)
# self._connect_ancestor_for_expressions(self._angle1, self._length1, self._angle2, self._length2)
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self._control_point1 = None # Fixme: not yet computed
self._control_point2 = None
##############################################
@property
def angle1(self):
return self._angle1
@property
def length1(self):
return self._length1
@property
def angle2(self):
return self._angle2
@property
def length2(self):
return self._length2
@property
def control_point1(self):
return self._control_point1
@property
def control_point2(self):
return self._control_point2
##############################################
def __repr__(self):
return self.__class__.__name__ + ' ({0._first_point.name}, {0._second_point.name}, {0._angle1}, {0._length1}, {0._angle2}, {0._length2})'.format(self)
##############################################
def eval_internal(self):
control_point1_offset = Vector2D.from_angle(self._angle1.value)*self._length1.value
control_point2_offset = Vector2D.from_angle(self._angle2.value)*self._length2.value
self._control_point1 = self.first_point.vector + control_point1_offset
self._control_point2 = self.second_point.vector + control_point2_offset
# self._logger.debug("Control points : {} {}".format(self._control_point1, self._control_point2))
##############################################
def geometry(self):
if self._control_point1 is None:
raise NameError("eval before to get geometry")
return CubicBezier2D(self._first_point.vector, self._control_point1,
self._control_point2, self._second_point.vector)