|
| 1 | +"""Models for the base data types.""" |
| 2 | + |
| 3 | +import copy |
| 4 | +from enum import Enum |
| 5 | +from typing import Tuple |
| 6 | + |
| 7 | +from pydantic import BaseModel |
| 8 | + |
| 9 | + |
| 10 | +class CoordOrigin(str, Enum): |
| 11 | + """CoordOrigin.""" |
| 12 | + |
| 13 | + TOPLEFT = "TOPLEFT" |
| 14 | + BOTTOMLEFT = "BOTTOMLEFT" |
| 15 | + |
| 16 | + |
| 17 | +class Size(BaseModel): |
| 18 | + """Size.""" |
| 19 | + |
| 20 | + width: float = 0.0 |
| 21 | + height: float = 0.0 |
| 22 | + |
| 23 | + def as_tuple(self): |
| 24 | + """as_tuple.""" |
| 25 | + return (self.width, self.height) |
| 26 | + |
| 27 | + |
| 28 | +class BoundingBox(BaseModel): |
| 29 | + """BoundingBox.""" |
| 30 | + |
| 31 | + l: float # left |
| 32 | + t: float # top |
| 33 | + r: float # right |
| 34 | + b: float # bottom |
| 35 | + |
| 36 | + coord_origin: CoordOrigin = CoordOrigin.TOPLEFT |
| 37 | + |
| 38 | + @property |
| 39 | + def width(self): |
| 40 | + """width.""" |
| 41 | + return self.r - self.l |
| 42 | + |
| 43 | + @property |
| 44 | + def height(self): |
| 45 | + """height.""" |
| 46 | + return abs(self.t - self.b) |
| 47 | + |
| 48 | + def scaled(self, scale: float) -> "BoundingBox": |
| 49 | + """scaled. |
| 50 | +
|
| 51 | + :param scale: float: |
| 52 | +
|
| 53 | + """ |
| 54 | + out_bbox = copy.deepcopy(self) |
| 55 | + out_bbox.l *= scale |
| 56 | + out_bbox.r *= scale |
| 57 | + out_bbox.t *= scale |
| 58 | + out_bbox.b *= scale |
| 59 | + |
| 60 | + return out_bbox |
| 61 | + |
| 62 | + def normalized(self, page_size: Size) -> "BoundingBox": |
| 63 | + """normalized. |
| 64 | +
|
| 65 | + :param page_size: Size: |
| 66 | +
|
| 67 | + """ |
| 68 | + out_bbox = copy.deepcopy(self) |
| 69 | + out_bbox.l /= page_size.width |
| 70 | + out_bbox.r /= page_size.width |
| 71 | + out_bbox.t /= page_size.height |
| 72 | + out_bbox.b /= page_size.height |
| 73 | + |
| 74 | + return out_bbox |
| 75 | + |
| 76 | + def as_tuple(self): |
| 77 | + """as_tuple.""" |
| 78 | + if self.coord_origin == CoordOrigin.TOPLEFT: |
| 79 | + return (self.l, self.t, self.r, self.b) |
| 80 | + elif self.coord_origin == CoordOrigin.BOTTOMLEFT: |
| 81 | + return (self.l, self.b, self.r, self.t) |
| 82 | + |
| 83 | + @classmethod |
| 84 | + def from_tuple(cls, coord: Tuple[float, ...], origin: CoordOrigin): |
| 85 | + """from_tuple. |
| 86 | +
|
| 87 | + :param coord: Tuple[float: |
| 88 | + :param ...]: |
| 89 | + :param origin: CoordOrigin: |
| 90 | +
|
| 91 | + """ |
| 92 | + if origin == CoordOrigin.TOPLEFT: |
| 93 | + l, t, r, b = coord[0], coord[1], coord[2], coord[3] |
| 94 | + if r < l: |
| 95 | + l, r = r, l |
| 96 | + if b < t: |
| 97 | + b, t = t, b |
| 98 | + |
| 99 | + return BoundingBox(l=l, t=t, r=r, b=b, coord_origin=origin) |
| 100 | + elif origin == CoordOrigin.BOTTOMLEFT: |
| 101 | + l, b, r, t = coord[0], coord[1], coord[2], coord[3] |
| 102 | + if r < l: |
| 103 | + l, r = r, l |
| 104 | + if b > t: |
| 105 | + b, t = t, b |
| 106 | + |
| 107 | + return BoundingBox(l=l, t=t, r=r, b=b, coord_origin=origin) |
| 108 | + |
| 109 | + def area(self) -> float: |
| 110 | + """area.""" |
| 111 | + return (self.r - self.l) * (self.b - self.t) |
| 112 | + |
| 113 | + def intersection_area_with(self, other: "BoundingBox") -> float: |
| 114 | + """intersection_area_with. |
| 115 | +
|
| 116 | + :param other: "BoundingBox": |
| 117 | +
|
| 118 | + """ |
| 119 | + # Calculate intersection coordinates |
| 120 | + left = max(self.l, other.l) |
| 121 | + top = max(self.t, other.t) |
| 122 | + right = min(self.r, other.r) |
| 123 | + bottom = min(self.b, other.b) |
| 124 | + |
| 125 | + # Calculate intersection dimensions |
| 126 | + width = right - left |
| 127 | + height = bottom - top |
| 128 | + |
| 129 | + # If the bounding boxes do not overlap, width or height will be negative |
| 130 | + if width <= 0 or height <= 0: |
| 131 | + return 0.0 |
| 132 | + |
| 133 | + return width * height |
| 134 | + |
| 135 | + def to_bottom_left_origin(self, page_height) -> "BoundingBox": |
| 136 | + """to_bottom_left_origin. |
| 137 | +
|
| 138 | + :param page_height: |
| 139 | +
|
| 140 | + """ |
| 141 | + if self.coord_origin == CoordOrigin.BOTTOMLEFT: |
| 142 | + return self |
| 143 | + elif self.coord_origin == CoordOrigin.TOPLEFT: |
| 144 | + return BoundingBox( |
| 145 | + l=self.l, |
| 146 | + r=self.r, |
| 147 | + t=page_height - self.t, |
| 148 | + b=page_height - self.b, |
| 149 | + coord_origin=CoordOrigin.BOTTOMLEFT, |
| 150 | + ) |
| 151 | + |
| 152 | + def to_top_left_origin(self, page_height): |
| 153 | + """to_top_left_origin. |
| 154 | +
|
| 155 | + :param page_height: |
| 156 | +
|
| 157 | + """ |
| 158 | + if self.coord_origin == CoordOrigin.TOPLEFT: |
| 159 | + return self |
| 160 | + elif self.coord_origin == CoordOrigin.BOTTOMLEFT: |
| 161 | + return BoundingBox( |
| 162 | + l=self.l, |
| 163 | + r=self.r, |
| 164 | + t=page_height - self.t, # self.b |
| 165 | + b=page_height - self.b, # self.t |
| 166 | + coord_origin=CoordOrigin.TOPLEFT, |
| 167 | + ) |
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