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|
-- Symbol names
local names =
{
en = "Diode",
cs = "Dioda",
sk = "Dióda"
}
local names_zener =
{
en = "Zener diode",
cs = "Zenerova dioda",
sk = "Zenerova dióda"
}
local names_led =
{
en = "Light-emitting diode",
cs = "Svítivá dioda",
sk = "Svietivá dióda"
}
local names_photo =
{
en = "Photodiode",
cs = "Fotodioda",
sk = "Fotodióda"
}
-- Render area in base units (X1, Y1, X2, Y2)
local area = {-2, -1, 2, 1}
local area_rad = {-2, -2.5, 2, 1}
-- Terminal points
local terminals = {{-2, 0}, {2, 0}}
-- Rendering
local render = function (cr)
-- The triangle
cr.move_to (-1, -1)
cr.line_to (1, 0)
cr.line_to (-1, 1)
cr.line_to (-1, -1)
-- The vertical line
cr.move_to (1, 1)
cr.line_to (1, -1)
-- The terminals
cr.move_to (-2, 0)
cr.line_to (2, 0)
cr.stroke ()
end
local render_zener = function (cr)
render (cr)
cr.move_to (1, 1)
cr.line_to (0.5, 1)
cr.stroke ()
end
local render_arrow = function (cr)
cr.move_to (0, 0)
cr.line_to (0, -1.5)
cr.stroke ()
cr.move_to (-0.3, -0.7)
cr.line_to (0, -1.5)
cr.line_to (0.3, -0.7)
cr.close_path ()
cr.fill ()
end
local render_radiation = function (cr)
cr.save ()
cr.translate (-0.4, 0)
render_arrow (cr)
cr.restore ()
cr.save ()
cr.translate (0.4, 0)
render_arrow (cr)
cr.restore ()
end
local render_led = function (cr)
render (cr)
cr.save ()
cr.translate (-0.3, -1.0)
cr.rotate (math.atan2 (1, 1))
render_radiation (cr)
cr.restore ()
end
local render_photo = function (cr)
render (cr)
cr.save ()
cr.translate (0.75, -2.05)
cr.rotate (math.atan2 (-1, -1))
render_radiation (cr)
cr.restore ()
end
-- Register the symbol
logdiag.register ("Diode", names, area, terminals, render)
logdiag.register ("DiodeZener", names_zener, area, terminals, render_zener)
logdiag.register ("DiodeLED", names_led, area_rad, terminals, render_led)
logdiag.register ("DiodePhoto", names_photo, area_rad, terminals, render_photo)
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