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With the new class QgsQuadrilateral, we can add expressions to create a square by a diagonal and rectangles by 3 points
18 lines
1.1 KiB
Plaintext
18 lines
1.1 KiB
Plaintext
{
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"name": "make_rectangle_3points",
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"type": "function",
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"description": "Creates a rectangle from 3 points.",
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"variableLenArguments": true,
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"arguments": [
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{"arg":"point1", "description": "First point."},
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{"arg":"point2", "description": "Second point."},
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{"arg":"point3", "description": "Third point."},
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{"arg":"option", "optional": true, "default": "0", "description":
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"An optional argument to construct the rectangle. By default this value is 0. Value can be 0 (distance) or 1 (projected). Option distance: Second distance is equal to the distance between 2nd and 3rd point. Option projected: Second distance is equal to the distance of the perpendicular projection of the 3rd point on the segment or its extension."}
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],
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"examples": [
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{ "expression":"geom_to_wkt(make_rectangle(make_point(0, 0), make_point(0,5), make_point(5, 5), 0)))", "returns":"'Polygon ((0 0, 0 5, 5 5, 5 0, 0 0))'"},
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{ "expression":"geom_to_wkt(make_rectangle(make_point(0, 0), make_point(0,5), make_point(5, 3), 1)))", "returns":"'Polygon ((0 0, 0 5, 5 5, 5 0, 0 0))'"}
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]
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}
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