55 lines
1.5 KiB
Lua
55 lines
1.5 KiB
Lua
api_version = 0
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-- 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_mode = mode.cycling
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result.backward_mode = mode.cycling
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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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local path = os.getenv('OSRM_RASTER_SOURCE')
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if not path then
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path = "rastersource.asc"
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end
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raster_source = sources:load(
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path,
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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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io.write("evaluating segment: " .. sourceData.datum .. " " .. targetData.datum .. "\n")
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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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io.write(" slope: " .. slope .. "\n")
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io.write(" was speed: " .. weight.speed .. "\n")
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weight.speed = weight.speed * (1 - (slope * 5))
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io.write(" new speed: " .. weight.speed .. "\n")
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end
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end
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