add optional segments argument

kannes · web-flow · commit e8d1099ff395 · 2018-05-10T16:58:12.000+02:00
text taken from single_sided_buffer
diff --git a/resources/function_help/json/buffer b/resources/function_help/json/buffer
@@ -3,7 +3,8 @@
   "type": "function",
   "description": "Returns a geometry that represents all points whose distance from this geometry is less than or equal to distance. Calculations are in the Spatial Reference System of this geometry.",
   "arguments": [ {"arg":"geom","description":"a geometry"},
-                 {"arg":"distance","description":"buffer distance in layer units"}],
+                 {"arg":"distance","description":"buffer distance in layer units"},
+                 {"arg":"segments","optional":true,"default":"8","description":"number of segments to use to represent a quarter circle when a round join style is used. A larger number results in a smoother buffer with more nodes."}],
   "examples": [ { "expression":"buffer($geometry, 10.5)", "returns":"polygon of $geometry buffered by 10.5 units"}]
 }
 

Original file line number	Diff line number	Diff line change
`@@ -3,7 +3,8 @@`
`3`	`3`	`"type": "function",`
`4`	`4`	`"description": "Returns a geometry that represents all points whose distance from this geometry is less than or equal to distance. Calculations are in the Spatial Reference System of this geometry.",`
`5`	`5`	`"arguments": [ {"arg":"geom","description":"a geometry"},`
`6`		`- {"arg":"distance","description":"buffer distance in layer units"}],`
	`6`	`+ {"arg":"distance","description":"buffer distance in layer units"},`
	`7`	`+ {"arg":"segments","optional":true,"default":"8","description":"number of segments to use to represent a quarter circle when a round join style is used. A larger number results in a smoother buffer with more nodes."}],`
`7`	`8`	`"examples": [ { "expression":"buffer($geometry, 10.5)", "returns":"polygon of $geometry buffered by 10.5 units"}]`
`8`	`9`	`}`
`9`	`10`