Přemysl Janouch
299ce010bd
* Add bipolar, IGFET and JFET transistors. * Add more variants to some symbols. * Add a symbol for a simple terminal. * Avoid unneccessary stroke() calls. * Fix comments.
118 lines
1.8 KiB
Lua
118 lines
1.8 KiB
Lua
-- Symbol names
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local names =
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{
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en = "Diode",
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cs = "Dioda"
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}
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local names_zener =
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{
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en = "Zener diode",
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cs = "Zenerova dioda"
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}
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local names_led =
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{
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en = "Light-emitting diode",
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cs = "Svítivá dioda"
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}
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local names_photo =
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{
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en = "Photodiode",
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cs = "Fotodioda"
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}
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-- Render area in base units (X1, Y1, X2, Y2)
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local area = {-2, -1, 2, 1}
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local area_rad = {-2, -2.5, 2, 1}
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-- Terminal points
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local terminals = {{-2, 0}, {2, 0}}
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-- Rendering
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local render = function (cr)
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-- The triangle
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cr.move_to (-1, -1)
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cr.line_to (1, 0)
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cr.line_to (-1, 1)
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cr.line_to (-1, -1)
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-- The vertical line
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cr.move_to (1, 1)
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cr.line_to (1, -1)
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-- The terminals
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cr.move_to (-2, 0)
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cr.line_to (2, 0)
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cr.stroke ()
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end
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local render_zener = function (cr)
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render (cr)
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cr.move_to (1, 1)
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cr.line_to (0.5, 1)
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cr.stroke ()
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end
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local render_arrow = function (cr)
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cr.move_to (0, 0)
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cr.line_to (0, -1.5)
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cr.stroke ()
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cr.move_to (-0.3, -0.7)
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cr.line_to (0, -1.5)
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cr.line_to (0.3, -0.7)
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cr.close_path ()
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cr.fill ()
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end
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local render_radiation = function (cr)
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cr.save ()
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cr.translate (-0.4, 0)
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render_arrow (cr)
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cr.restore ()
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cr.save ()
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cr.translate (0.4, 0)
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render_arrow (cr)
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cr.restore ()
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end
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local render_led = function (cr)
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render (cr)
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cr.save ()
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cr.translate (-0.3, -1.0)
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cr.rotate (math.atan2 (1, 1))
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render_radiation (cr)
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cr.restore ()
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end
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local render_photo = function (cr)
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render (cr)
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cr.save ()
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cr.translate (0.75, -2.05)
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cr.rotate (math.atan2 (-1, -1))
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render_radiation (cr)
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cr.restore ()
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end
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-- Register the symbol
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logdiag.register ("Diode", names, area, terminals, render)
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logdiag.register ("DiodeZener", names_zener, area, terminals, render_zener)
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logdiag.register ("DiodeLED", names_led, area_rad, terminals, render_led)
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logdiag.register ("DiodePhoto", names_photo, area_rad, terminals, render_photo)
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