102 lines
3.2 KiB
Python
102 lines
3.2 KiB
Python
import random
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from copy import deepcopy
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from itertools import chain
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from operator import itemgetter
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import fpdf
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import pytest
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from funcy import juxt, merge, rpartial
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from image_prediction.image_extractor.extractor import ImageMetadataPair
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from image_prediction.info import Info
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from test.conftest import get_base_position_metadata, add_image, random_single_color_image_from_metadata
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def test_image_stitcher(partial_image_metadata_pairs):
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pass
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@pytest.mark.parametrize("width", [160])
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@pytest.mark.parametrize("height", [90])
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@pytest.mark.parametrize("page_width", [int(160 * 1.1)])
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@pytest.mark.parametrize("page_height", [int(90 * 1.1)])
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def test_partial_image_metadata_pairs(patches_metadata, page_width, page_height):
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pdf = fpdf.FPDF(unit="pt", format=(page_width, page_height))
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for patch in patches_metadata:
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image = random_single_color_image_from_metadata(patch)
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add_image(pdf, ImageMetadataPair(image, patch))
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pdf.output("/tmp/bla.pdf")
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class BoxSplitter:
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def __init__(self):
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self.__steps = None
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self.__horiz_keymap = {"dim": Info.WIDTH, "c1": Info.X1, "c2": Info.X2}
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self.__vert_keymap = {"dim": Info.HEIGHT, "c1": Info.Y1, "c2": Info.Y2}
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def split_box(self, box, steps=5):
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self.__steps = steps
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return self.__split_recursively(box, 0)
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def __split_recursively(self, box, step):
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return self.__split_and_recurse(box, step) if self.__steps_left(step) else self.__base_case(box)
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def __steps_left(self, step):
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return step < self.__steps
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@staticmethod
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def __base_case(box):
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return [box]
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def __split_and_recurse(self, box, step):
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new_boxes = self.__random_split(box)
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return chain.from_iterable(self.__tree_recurse(new_boxes, step + 1))
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def __random_split(self, box):
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splitter = random.choice([self.__split_horizontal, self.__split_vertical])
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new_boxes = splitter(box)
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return new_boxes
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def __tree_recurse(self, boxes, step):
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return map(rpartial(self.__split_recursively, step + 1), boxes)
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def __split_horizontal(self, box):
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return self.__split_if_large_enough(box, self.__horiz_keymap)
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def __split_vertical(self, box):
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return self.__split_if_large_enough(box, self.__vert_keymap)
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def __split_if_large_enough(self, box, keymap):
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return self.__get_child_boxes(box, keymap) if self.__large_enough(box, keymap) else self.__base_case(box)
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@staticmethod
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def __large_enough(box, keymap):
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return box[keymap["dim"]] >= 10
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@staticmethod
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def __get_child_boxes(box, keymap):
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dim, c1, c2 = itemgetter("dim", "c1", "c2")(keymap)
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split_len = random.randint(5, box[dim] - 5)
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split_point = box[c1] + split_len
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box_left, box_right = juxt(deepcopy, deepcopy)(box)
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box_left[dim] = split_len
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box_right[dim] = box[dim] - split_len
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box_left[c2] = split_point
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box_right[c1] = split_point
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return box_left, box_right
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@pytest.fixture()
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def patches_metadata(width, height, page_width, page_height):
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box = get_base_position_metadata(width, height, page_width, page_height)
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box = merge(box, {Info.X1: 0, Info.Y1: 0, Info.X2: width, Info.Y2: height})
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boxes = BoxSplitter().split_box(box)
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return boxes
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