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-- Symbol names
local names_A =
{
en = "Ammeter",
cs = "Ampérmetr"
}
local names_mA =
{
en = "Milliammeter",
cs = "Miliampérmetr"
}
local names_V =
{
en = "Voltmeter",
cs = "Voltmetr"
}
local names_ohm =
{
en = "Ohmmeter",
cs = "Ohmmetr"
}
local names_W =
{
en = "Wattmeter",
cs = "Wattmetr"
}
-- Render area in base units (X1, Y1, X2, Y2)
local area = {-3, -2, 3, 2}
-- Terminal points
local terminals = {{-3, 0}, {3, 0}}
-- Rendering
local render = function (cr, name)
-- The circle
cr.arc (0, 0, 2, 0, math.pi * 2)
-- The contact
cr.move_to (-3, 0)
cr.line_to (-2, 0)
cr.move_to (2, 0)
cr.line_to (3, 0)
cr.stroke ()
cr.move_to (0, 0)
cr.show_text (name)
end
local render_A = function (cr)
render (cr, "A")
end
local render_mA = function (cr)
render (cr, "mA")
end
local render_V = function (cr)
render (cr, "V")
end
local render_ohm = function (cr)
render (cr, "Ω")
end
local render_W = function (cr)
render (cr, "W")
end
-- Register the symbols
logdiag.register ("Ammeter", names_A, area, terminals, render_A)
logdiag.register ("Milliammeter", names_mA, area, terminals, render_mA)
logdiag.register ("Voltmeter", names_V, area, terminals, render_V)
logdiag.register ("Ohmmeter", names_ohm, area, terminals, render_ohm)
logdiag.register ("Wattmeter", names_W, area, terminals, render_W)
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