bac6703f8e
* Adds a data structure, RasterSource, to store parsed + queryable data * Adds bindings for that and relevant data structures as well as source_function and segment_function * Adds relevant unit tests and cucumber tests * Bring-your-own-data feature
47 lines
1.2 KiB
Lua
47 lines
1.2 KiB
Lua
-- Rasterbot profile
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-- Minimalist node_ and way_functions in order to test source_ and segment_functions
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function node_function (node, result)
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end
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function way_function (way, result)
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local highway = way:get_value_by_key("highway")
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local name = way:get_value_by_key("name")
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if name then
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result.name = name
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end
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result.forward_speed = 15
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result.backward_speed = 15
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end
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function source_function ()
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raster_source = sources:load(
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"../test/rastersource.asc",
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0, -- lon_min
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0.1, -- lon_max
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0, -- lat_min
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0.1, -- lat_max
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5, -- nrows
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4 -- ncols
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)
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end
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function segment_function (source, target, distance, weight)
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local sourceData = sources:query(raster_source, source.lon, source.lat)
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local targetData = sources:query(raster_source, target.lon, target.lat)
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print ("evaluating segment: " .. sourceData.datum .. " " .. targetData.datum)
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local invalid = sourceData.invalid_data()
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if sourceData.datum ~= invalid and targetData.datum ~= invalid then
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local slope = math.abs(sourceData.datum - targetData.datum) / distance
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print (" slope: " .. slope)
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print (" was speed: " .. weight.speed)
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weight.speed = weight.speed * (1 - (slope * 5))
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print (" new speed: " .. weight.speed)
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end
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end
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