test-path.py

####################################################################################################
#
# 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/>.
#
####################################################################################################

####################################################################################################

from Patro.Common.Logging import Logging
Logging.setup_logging()

from Patro.GeometryEngine.Path import Path2D
from Patro.GeometryEngine.Vector import Vector2D
from Patro.GraphicEngine.GraphicScene.GraphicStyle import GraphicPathStyle, GraphicBezierStyle
from Patro.GraphicEngine.Painter.QtPainter import QtScene
from Patro.GraphicStyle import Colors, StrokeStyle

####################################################################################################

class SceneBuilder:

    ##############################################

    def __init__(self):

        self._scene = QtScene()

        self._bounding_box = None
        for path in (
                self._make_path1(),
                self._make_path2(),
                self._make_path3(),
                self._make_path4(),
                ):
            self._add_path(path)
        self._scene.bounding_box = self._bounding_box # Fixme:

    ##############################################

    @property
    def scene(self):
        return self._scene

    ##############################################

    def _update_bounding_box(self, item):

        interval = item.bounding_box
        if self._bounding_box is None:
            self._bounding_box = interval
        else:
            self._bounding_box |= interval

    ##############################################

    def _make_path1(self):

        start_point = Vector2D(0, 0)
        path = Path2D(start_point)
        path.horizontal_to(10)
        path.vertical_to(10)
        path.north_east_to(10)
        path.north_west_to(10)
        path.south_west_to(10)
        path.south_east_to(5)
        path.south_to(5)
        path.west_to(10)
        path.north_to(5)
        path.east_to(5)

        return path

    ##############################################

    def _make_path2(self):

        start_point = Vector2D(20, 0)
        path = Path2D(start_point)
        path.horizontal_to(10)
        path.vertical_to(10)
        path.north_east_to(10)
        path.north_west_to(10)
        path.south_west_to(10)
        path.south_east_to(5)

        return path

    ##############################################

    def _make_path3(self):

        start_point = Vector2D(40, 0)
        path = Path2D(start_point)
        path.line_to(Vector2D(10, 0))
        path.line_to(Vector2D(0, 10), radius=5)
        path.line_to(Vector2D(10, 0), radius=5)
        path.line_to(Vector2D(0, 20), radius=5)
        path.line_to(Vector2D(-10, 0), radius=5)
        path.line_to(Vector2D(0, -10), radius=5)
        path.close(radius=0) # Fixme:

        return path

    ##############################################

    def _make_path4(self):

        start_point = Vector2D(70, 0)
        path = Path2D(start_point)
        # path.line_to(Vector2D(10, 0))
        # path.line_to(Vector2D(0, 10), radius=5)
        # path.line_to(Vector2D(-10, 0), radius=5)
        path.east_to(10)
        path.north_to(10, radius=5)
        path.west_to(10, radius=5)

        return path

    ##############################################

    def _add_path(self, path):

        path_style = GraphicPathStyle(
            line_width=3.0,
            stroke_color=Colors.black,
            stroke_style=StrokeStyle.SolidLine,
        )

        self._scene.add_path(path, path_style)

        # Fixme: why here ???
        self._update_bounding_box(path)

####################################################################################################

scene = QtScene()

scene_builder = SceneBuilder()
application.qml_application.scene = scene_builder.scene