Update the symbol library.

* 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.

share/library/Passive/capacitor.lua

@@ -5,10 +5,17 @@ local names =
 	cs = "Kondenzátor"
 }
 
--- Render area in base units (X1, Y1, X2, Y2)
-local area = {-2, -1, 2, 1}
+local names_polar =
+{
+	en = "Polarized capacitor",
+	cs = "Polarizovaný kondenzátor"
+}
 
--- Terminals
+-- Render area in base units (X1, Y1, X2, Y2)
+local area       = {-2, -1, 2, 1}
+local area_polar = {-2, -1.5, 2, 1}
+
+-- Terminal points
 local terminals = {{-2, 0}, {2, 0}}
 
 -- Rendering
@@ -16,23 +23,36 @@ local render = function (cr)
 	-- The vertical lines
 	cr.move_to (-0.2, -1)
 	cr.line_to (-0.2, 1)
-	cr.stroke ()
 
 	cr.move_to (0.2, -1)
 	cr.line_to (0.2, 1)
-	cr.stroke ()
 
-	-- The contacts
+	-- The terminals
 	cr.move_to (-2, 0)
 	cr.line_to (-0.2, 0)
-	cr.stroke ()
 
 	cr.move_to (0.2, 0)
 	cr.line_to (2, 0)
+
+	cr.stroke ()
+end
+
+local render_polar = function (cr)
+	render (cr)
+
+	cr.move_to (0.6, -1)
+	cr.line_to (1.4, -1)
+
+	cr.move_to (1, -1.4)
+	cr.line_to (1, -0.6)
+
 	cr.stroke ()
 end
 
 -- Register the symbol
-logdiag.register ("Capacitor", names, area, terminals, render)
+logdiag.register ("Capacitor",
+	names,       area,       terminals, render)
+logdiag.register ("CapacitorPolarized",
+	names_polar, area_polar, terminals, render_polar)
 
 

share/library/Passive/diode.lua

@@ -1,41 +1,117 @@
--- Symbol name
+-- Symbol names
 local names =
 {
 	en = "Diode",
 	cs = "Dioda"
 }
 
--- Render area in base units (X1, Y1, X2, Y2)
-local area = {-2, -1, 2, 1}
+local names_zener =
+{
+	en = "Zener diode",
+	cs = "Zenerova dioda"
+}
 
--- Terminals
+local names_led =
+{
+	en = "Light-emitting diode",
+	cs = "Svítivá dioda"
+}
+
+local names_photo =
+{
+	en = "Photodiode",
+	cs = "Fotodioda"
+}
+
+-- 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_normal = function (cr)
+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)
-	cr.stroke ()
 
 	-- The vertical line
 	cr.move_to (1, 1)
 	cr.line_to (1, -1)
-	cr.stroke ()
 
-	-- The contacts
+	-- The terminals
 	cr.move_to (-2, 0)
-	cr.line_to (-1, 0)
-	cr.stroke ()
-
-	cr.move_to (1, 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 ("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)
 
 

share/library/Passive/inductor.lua

@@ -1,5 +1,5 @@
 -- Symbol names
-local names_normal =
+local names =
 {
 	en = "Inductor",
 	cs = "Cívka"
@@ -14,30 +14,32 @@ local names_core =
 -- Render area in base units (X1, Y1, X2, Y2)
 local area = {-2, -1, 2, 0}
 
--- Terminals
+-- Terminal points
 local terminals = {{-2, 0}, {2, 0}}
 
 -- Rendering
-local render_normal = function (cr)
+local render = function (cr)
 	-- The arcs
 	cr.arc (-1.5, 0, 0.5, math.pi, 0)
 	cr.arc (-0.5, 0, 0.5, math.pi, 0)
 	cr.arc (0.5, 0, 0.5, math.pi, 0)
 	cr.arc (1.5, 0, 0.5, math.pi, 0)
+
 	cr.stroke ()
 end
 
 local render_core = function (cr)
-	render_normal (cr)
+	render (cr)
 
 	-- The core
 	cr.move_to (-2, -1)
 	cr.line_to (2, -1)
+
 	cr.stroke ()
 end
 
 -- Register the symbols
-logdiag.register ("Inductor",         names_normal, area, terminals, render_normal)
-logdiag.register ("InductorWithCore", names_core,   area, terminals, render_core)
+logdiag.register ("Inductor",         names,      area, terminals, render)
+logdiag.register ("InductorWithCore", names_core, area, terminals, render_core)
 
 

share/library/Passive/resistor.lua

@@ -5,11 +5,26 @@ local names =
 	cs = "Rezistor"
 }
 
--- Render area in base units (X1, Y1, X2, Y2)
-local area = {-2, -0.5, 2, 0.5}
+local names_adj =
+{
+	en = "Adjustable resistor",
+	cs = "Nastavitelný rezistor"
+}
 
--- Terminals
-local terminals = {{-2, 0}, {2, 0}}
+local names_pot =
+{
+	en = "Potentiometer",
+	cs = "Potenciometr"
+}
+
+-- Render area in base units (X1, Y1, X2, Y2)
+local area     = {-2, -0.5, 2, 0.5}
+local area_adj = {-2, -1.5, 2, 1}
+local area_pot = {-2, -2, 2, 0.5}
+
+-- Terminal points
+local terminals     = {{-2, 0}, {2, 0}}
+local terminals_pot = {{-2, 0}, {2, 0}, {2, -2}}
 
 -- Rendering
 local render = function (cr)
@@ -19,19 +34,66 @@ local render = function (cr)
 	cr.line_to (1.5, 0.5)
 	cr.line_to (-1.5, 0.5)
 	cr.line_to (-1.5, -0.5)
-	cr.stroke ()
 
-	-- The contacts
+	-- The terminals
 	cr.move_to (-2, 0)
 	cr.line_to (-1.5, 0)
-	cr.stroke ()
 
 	cr.move_to (1.5, 0)
 	cr.line_to (2, 0)
+
 	cr.stroke ()
 end
 
+local render_adj = function (cr)
+	render (cr)
+
+	-- The arrow
+	cr.move_to (-1, 1)
+	cr.line_to (1, -1)
+
+	cr.stroke ()
+
+	cr.save ()
+	cr.translate (1.5, -1.5)
+	cr.rotate (math.atan2 (1, 1))
+
+	cr.move_to (0, 0)
+	cr.line_to (0.3, 0.8)
+	cr.line_to (-0.3, 0.8)
+	cr.close_path ()
+
+	cr.fill ()
+	cr.restore ()
+end
+
+local render_pot = function (cr)
+	render (cr)
+
+	-- The contact
+	cr.move_to (0, -2)
+	cr.line_to (2, -2)
+
+	-- The arrow
+	cr.move_to (0, -2)
+	cr.line_to (0, -1)
+
+	cr.stroke ()
+
+	cr.move_to (0, -0.5)
+	cr.line_to (0.3, -1.3)
+	cr.line_to (-0.3, -1.3)
+	cr.close_path ()
+
+	cr.fill ()
+end
+
 -- Register the symbol
-logdiag.register ("Resistor", names, area, terminals, render)
+logdiag.register ("Resistor",
+	names,     area,     terminals,     render)
+logdiag.register ("ResistorAdjustable",
+	names_adj, area_adj, terminals,     render_adj)
+logdiag.register ("Potentiometer",
+	names_pot, area_pot, terminals_pot, render_pot)