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width buffers Adds: - tapered_buffer - buffer_by_m expression functions. These expose the same functionality as the equivalent processing algorithms but for use in expressions such as geometry generators.
12 lines
877 B
Plaintext
12 lines
877 B
Plaintext
{
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"name": "tapered_buffer",
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"type": "function",
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"description": "Creates a buffer along a line geometry where the buffer diameter varies evenly over the length of the line.",
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"arguments": [ {"arg":"geometry","description":"input geometry. Must be a (multi)line geometry."},
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{"arg":"start_width","description":"width of buffer at start of line,"},
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{"arg":"end_width","description":"width of buffer at end of line."},
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{"arg":"segments","optional":true,"default":"8","description":"number of segments to approximate quarter-circle curves in the buffer."}],
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"examples": [ { "expression":"tapered_buffer(geometry:=geom_from_wkt('LINESTRING(1 2, 4 2)'),start_width:=1,end_width:=2,segments:=8)", "returns":"A tapered buffer starting with a diameter of 1 and ending with a diameter of 2 along the linestring geometry."}]
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}
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