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