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-- Symbol names
local names_A =
{
en = "Ammeter",
cs = "Ampérmetr",
sk = "Ampérmeter",
pl = "Amperomierz",
de = "Ampermeter"
}
local names_V =
{
en = "Voltmeter",
cs = "Voltmetr",
sk = "Voltmeter",
pl = "Woltomierz",
de = "Voltmeter"
}
local names_ohm =
{
en = "Ohmmeter",
cs = "Ohmmetr",
sk = "Ohmmeter",
pl = "Omomierz",
de = "Ohmmeter"
}
-- Render area in base units (X1, Y1, X2, Y2)
local area = {-2, -2, 2, 2}
-- Terminal points
local terminals = {{-2, 0}, {2, 0}, {0, -2}, {0, 2}}
-- Rendering
local render_A = function (cr)
-- The circle
cr.arc (0, 0, 2, 0, math.pi * 2)
-- The letter A
cr.move_to (-0.4, 0.5)
cr.line_to (0, -0.5)
cr.line_to (0.4, 0.5)
cr.move_to (-0.3, 0.25)
cr.line_to (0.3, 0.25)
cr.stroke ()
end
local render_V = function (cr)
-- The circle
cr.arc (0, 0, 2, 0, math.pi * 2)
-- The letter V
cr.move_to (-0.4, -0.5)
cr.line_to (0, 0.5)
cr.line_to (0.4, -0.5)
cr.stroke ()
end
local render_ohm = function (cr)
-- The circle
cr.arc (0, 0, 2, 0, math.pi * 2)
-- The capital letter omega
cr.move_to (-0.5, 0.5)
cr.line_to (-0.15, 0.5)
cr.curve_to (-0.15, 0.5, -0.4, 0.3, -0.4, 0)
cr.curve_to (-0.4, -0.25, -0.25, -0.5, 0, -0.5)
cr.curve_to (0.25, -0.5, 0.4, -0.25, 0.4, 0)
cr.curve_to (0.4, 0.3, 0.15, 0.5, 0.15, 0.5)
cr.line_to (0.5, 0.5)
cr.stroke ()
end
-- Register the symbols
logdiag.register ("Ammeter", names_A, area, terminals, render_A)
logdiag.register ("Voltmeter", names_V, area, terminals, render_V)
logdiag.register ("Ohmmeter", names_ohm, area, terminals, render_ohm)
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