logdiag/share/library/Misc/lamp.lua

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-- Symbol name
local names =
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{
en = "Lamp",
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cs = "Světelný zdroj",
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sk = "Svetelný zdroj",
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pl = "Źródło światła",
de = "Lampe"
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}
-- Render area in base units (X1, Y1, X2, Y2)
local area = {-2, -1, 2, 1}
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-- Terminal points
local terminals = {{-2, 0}, {2, 0}}
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-- Rendering
local render = function (cr)
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-- The circle
cr.save ()
cr.arc (0, 0, 1, 0, 2 * math.pi)
cr.stroke_preserve ()
cr.clip ()
cr.move_to (-1, -1)
cr.line_to (1, 1)
cr.move_to (1, -1)
cr.line_to (-1, 1)
cr.stroke ()
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cr.restore ()
-- The terminals
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cr.move_to (-2, 0)
cr.line_to (-1, 0)
cr.move_to (1, 0)
cr.line_to (2, 0)
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cr.stroke ()
end
-- Register the symbol
logdiag.register ("Lamp", names, area, terminals, render)