added nofill layers, refactor code

inductor_2.il

@@ -12,7 +12,6 @@ debug = nil
 ; DEBUG output function, uncomment to get all output
 (procedure output( @rest args)
 	(when debug (apply 'printf args))
-	;()
 )
 
 ; VECTOR HELPER FUNCTIONS
@@ -63,6 +62,33 @@ debug = nil
 	result
 )
 
+; Tests if a float x is zero in respect to the manufacturing grid
+; (smaller then one grid spacing)
+(defun ind_isZero (x) 
+	abs(x)<1/mfgGrid
+)
+
+; return the sign of the input 
+; (ind_sign 20) = 1
+; (ind_sign -10) = -1
+; (ind_sign 0) = 0
+(defun ind_sign (x)
+	(if ind_isZero(x)
+	then 0
+	else 
+		(if (x > 0) 
+			then 1
+			else -1
+		)
+	)
+)
+; only returns vectors with their sign as components
+; e.g. (cleanupDirVect 0.1:-20) == 1:-1
+(defun cleanDirVect (vect)
+	(ind_sign car(vect)):(ind_sign cadr(vect))
+))
+
+
 ; DRAWING HELPER FUNCTIONS
 ; creates a pin using database functions
 ; and a corresponding net with name name
@@ -145,6 +171,7 @@ debug = nil
 ; Creates the start of the inductor 
 ; and places a pin there
 (defun ind_createStart (id start width dir)
+	(let (center points) 
 		center = start; (addVect start multVect((invVect dir) width/2))
 	
 		points = list(
@@ -153,12 +180,13 @@ debug = nil
 			(addVect center width:(-width))
 			(addVect center (-width):(-width))
 		)
-	/*(ind_createPin
+		(ind_createPin
 			id
 			"outer"
 	 		points
 			list("TopMetal2" "drawing")
-	)*/
+		)
+	)
 )
 
 ; creates one segment of the inductor and calls itself recursively to complete
@@ -201,7 +229,7 @@ debug = nil
 	isend   = (n < 1)
 
 	; DEBUG
-	output("seg: %d, n: %L (start: %L, end: %L)\n", mod(seg, nseg), n, isstart, isend)
+	(output "seg: %d, n: %L (start: %L, end: %L)\n", mod(seg, nseg), n, isstart, isend)
 
 	when(isend 
 		l = (lenVect dir)
@@ -238,8 +266,9 @@ debug = nil
 		)
 	)
 
-	when(isstart ind_createStart(id start whalv ndir))
+	;  FIXME: broken, and underpass is not generated anyway
-	when((n<=1) ind_createEnd(id end whalv ndir))
+	;when(isstart ind_createStart(id start whalv ndir))
+	;when((n<=1) ind_createEnd(id end whalv ndir))
 
 	n -= 1
 	(output "n=%L\n", n)
@@ -249,106 +278,20 @@ debug = nil
 	) ; when
 )
 
-defun(ind_gndshield (r width pitch gap window)
-	(output "draw gnd shield with r=%L and w=%L\n", r, width)
 
-	r2   = r + width
+(defun ind_drawOctagon (r w1 w2 layer shorting)
-	m = 1/tan(mconst.PI/nseg)
+	(let (a b start end)
-	segw = 2*r/m
+		; define start
-	pitch += width
+		a = (snap r*tanalpha)
-
+;		a = (floor r*tanalpha*mfgGrid)/(0.25*mfgGrid)
-	(defun iszero (x) 
-		abs(x) < 1/mfgGrid
-	)
-
-	(defun sign (x)
-		(if iszero(x)
-		then 0
-		else 
-			(if (x > 0) 
-				then 1
-				else -1
-			)
-		)
-	)
-
-	(defun cleanup (vect)
-		(sign car(vect)):(sign cadr(vect))
-	)
-
-	for(n 0 nseg-1
-		angle  = mconst.PI*2/nseg * n
-		rotmat = list(
-				list(cos(angle) -sin(angle)) 
-				list(sin(angle) cos(angle))
-			)
-		
-		w1 = width
-		w = w1
-		(when ((mod n 2) == 1)
-			w2 = w1*sqrt(2)
-			w= w2
-		)
-		
-		w1 = (snap w1)
-		w2 = (snap w2)
-		
-		w = (snap w)
-		
-;		contact_ring = append(contact_ring list(list(r2*cos(angle-mconst.PI/nseg) r2*sin(angle-mconst.PI/nseg))))
-
-		for(y 0 floor(segw/(2*pitch))
-			yr = (snap y*pitch)
-			a = (snap min(yr*m + gap, r))
-			l = (r-a)
-			
-			(when ((mod n 2) == 1)
-				l /= sqrt(2)
-			)
-
-			l = (snap l)
-			
-	
-			dir = (cleanup matmult(rotmat 0:-1))
-			
-			(output "%P\n", dir)
-
-			start = matmult(rotmat yr:r)
-			start = (floor((car start)*50.0)/50.0):(floor((cadr start)*50.0)/50.0)
-			end = (addVect start (multVect dir l))
-	
-			(dbCreatePathSeg
-				id 
-				gndshield_layer
-				start 
-				end 
-				w
-				"truncate"
-				"truncate"
-			)
-
-			when(y != 0
-				start = -car(start):cadr(start)
-				end = -car(end):cadr(end)
-
-				dbCreatePathSeg(
-					id 
-					gndshield_layer
-					start
-					end
-					w
-					"truncate"
-					"truncate"
-				)
-			)
-		) ; for
-		
-		a = (floor r/m*mfgGrid/2)/(0.5*mfgGrid)
 		b = (snap r)
 	
 		start = 0:0	
 		end = 0:0
-		(print n)
+		
+		(for n 0 8
+			(let (w) 
+				w = (if mod(n 2)==1 then w2 else w1)
 			
 				(case n
 				(0
@@ -381,11 +324,11 @@ defun(ind_gndshield (r width pitch gap window)
 					)
 				(7
 					start = -b:a
-			end   = (addVect -a:b -window:-window)
+					end   = (addVect -a:b -shorting:-shorting)
 					)
 				)
 			
-		; draw contact ring
+				; draw ring segment
 				(apply 'dbCreatePathSeg
 					id
 					gndshield_layer 
@@ -408,15 +351,91 @@ defun(ind_gndshield (r width pitch gap window)
 							)
 						)
 					)
-			)
+				) ; END apply
+			) ; END let
+		) ; END for	
 	)
 )
 
+(defun ind_gndshield2 (yr)
+	(let (a l) 
+		a  = min((yr*m + gap) r)
+		l  = (r-a)
+	
+		when(l>0
+			; DEBUG
+			(output "(r=%L, m=%L, w=%L) yr=%L, a=%L, length=%L\n" m r w yr a l)
+		
+			(when ((mod n 2) == 1)
+				l /= sqrt(2)
+			)
+	
+			l = (snap l)
+				
+			dir = (cleanDirVect matmult(rotmat 0:-1))
+			
+			start = matmult(rotmat yr:r)
+;			start = (snap (car start)):(snap (cadr start))
+			start = (floor((car start)*50.0)/50.0):(floor((cadr start)*50.0)/50.0)
+			end = (addVect start (multVect dir l))
+	
+			; DEBUG
+			(output "start=%P, end=%P (dir=%P)\n" start end dir)
+
+			(dbCreatePathSeg
+				id 
+				gndshield_layer
+				start 
+				end 
+				w
+				"truncate"
+				"truncate"
+			)
+	
+			when(yr != 0
+				; DEBUG
+				(output "create mirror at y=%L\n" -yr)
+				start = -car(start):cadr(start)
+				end = -car(end):cadr(end)
+	
+				dbCreatePathSeg(
+					id 
+					gndshield_layer
+					start
+					end
+					w
+					"truncate"
+					"truncate"
+				)
+			)
+
+			(ind_gndshield2 yr+pitch)
+		) ; END when
+	) ; END let
+)
+
+(defun ind_gndshield (r w1 w2 pitch gap window) 
+	(let (n w)
+		for(n 0 nseg-1
+			; DEBUG
+			angle  = mconst.PI*2/nseg * n
+			rotmat = list(
+					list(cos(angle) -sin(angle)) 
+					list(sin(angle) cos(angle))
+				)
+		
+			w = if((mod n 2)==1 then w2 else w1)
+				
+			(output "draw a gndshield part with w=%L\n" w)		
+			(ind_gndshield2 0)
+		) ; END for
+	)
 )
 
 ; uses ind_drawSegment to create a complete inductor with 
 ; the given specification
 defun(drawInductor (n r width pitch)
+	(let (id w whalv w2 w2halv ahalv talpha hl nseg)
 		; the PCell cell view id
 		id    = pcCellView
 	
@@ -436,7 +455,6 @@ defun(drawInductor (n r width pitch)
 		w2halv = snap(width*sqrt(2)/2)   
 		w2     = 2*w2halv 
 	
-
 		pitch  = snap(pitch + w) ; pitch from segment sides
 		r = snap(r - whalv)   ; middle radius
 		nseg   = 8     ; octagonal inductor
@@ -447,16 +465,130 @@ defun(drawInductor (n r width pitch)
 		hl    = snap((r-w/2)*talpha) ; start point
 	
 		; draw inductor
+		(let (dir)
 			(ind_drawSegment id n*nseg 0 -hl:r r)
 		)
+	)
+)
 
-(defun drawGndShield (r pitch width window) 
+(defun drawGndShield (r layer pitch width window) 
 	; setup gndshield
-	id = pcCellView
+	(let (id gndshield_layer nseg dir tanalpha m w1 w2 ymax)
-	gndshield_layer = '("Metal1" "drawing")
+		r -= (snap width/2)
-	nseg = 8
+		w1 = (snap width*1.0)
+		w2 = (snap width*1.0*sqrt(2))
 
-	(ind_gndshield r pitch width width*2 (snap window))
+		id = pcCellView
+		gndshield_layer = layer
+		nseg = 8
+		tanalpha = tan(mconst.PI/nseg)
+
+		segw = r/2.0*tanalpha
+		pitch += width
+		m = 1/tanalpha
+		ymax = floor(segw/(2*pitch))
+
+		(output "draw gnd shield with nfins=%L, r=%L, segw=%L, segcount=%L and w=%L on %L\n" ymax r segw (floor segw/(2*pitch)) width gndshield_layer)
+
+		; draw the gndshield itself
+		(ind_gndshield r w1 w2 pitch width*2 (snap window))
+
+		; draw contact ring
+		(ind_drawOctagon r w1 w2 gndshield_layer window) 
+	)
+)
+
+
+(defun ind_getOctagonPoints (r w1 w2 shorting) 
+	(let (a b start end)
+		; define start
+		a = (floor r*tan(mconst.PI/8)*mfgGrid*0.5)/(0.5*mfgGrid)
+		b = (snap r)
+	
+		start = 0:0	
+		end = 0:0
+		result=list()
+
+		(for n 0 8
+			(let (w) 
+				w = (if mod(n 2)==1 then w2 else w1)
+			
+				(case n
+				(0
+					start = -a:b
+					end   = a:b
+					)
+				(1
+					start = a:b
+					end   = b:a
+					)
+				(2 
+					start = b:a
+					end   = b:-a
+					)
+				(3
+					start =  b:-a
+					end   =  a:-b
+					)
+				(4
+					start =  a:-b
+					end   = -a:-b
+					)
+				(5
+					start = -a:-b
+					end   = -b:-a
+					)
+				(6
+					start = -b:-a
+					end   = -b:a
+					)
+				(7
+					start = -b:a
+					end   = (addVect -a:b -shorting:-shorting)
+					)
+				)
+				result=(append result list(list(start end w)))
+			)
+		)
+	)
+	result
+)
+
+(defun ind_segmentsToPolygon (seg) 
+	(output "segments=%L\n" seg)
+	result = list(caar(seg))
+	seg = cdr(seg)
+
+	(when seg
+		result = (append result (ind_segmentsToPolygon seg))
+	)
+	result
+)
+
+(defun drawBlockLayer (points layers)
+	(let (layer)
+		layer = car(layers)
+		layers = cdr(layers)
+
+		; DEBUG
+		(output "draw block layer %L\n", layer)
+
+		(dbCreatePolygon 
+			pcCellView
+			layer
+			points
+		)
+
+		(when layers
+			(drawBlockLayer points layers)
+		)
+	)	
+)
+
+(defun drawBlockLayers (r layers)
+	points = (ind_segmentsToPolygon (ind_getOctagonPoints r 0 0 0))
+	(output "polygon points %L\n", points)
+	(drawBlockLayer points layers)
 )
 
 (defun setup ()
@@ -471,20 +603,38 @@ defun(drawInductor (n r width pitch)
 	list(
 		( turns  "float" 1.0 )
 		( radius "float" 100.0 )
-		( width  "float" 2.1 ); techGetSpacingRule(techGetTechFile(pcCellView) "minWidth" "TopMetal2" ))
+		( width  "float" 2.1 )
 		( pitch  "float" 2.1 )
+		; gndshield parameters
 		( gndshield "boolean" nil )
 		( gndpitch "float" 2.1 )
 		( gndwidth "float" 2.1 )
 		( gndoverlap "float" 3 )
 		( gndwindow "float" 2.1 )
+		; layer setup
+		( blockLayers "ilList" '(
+			("Metal1" "nofill") 
+			("Metal2" "nofill") 
+			("Metal3" "nofill") 
+			("TopMetal1" "nofill") 
+			("TopMetal2" "nofill") 
+			("GatPoly" "nofill") 
+			("Activ" "nofill") 
+			("PWell" "block")
+			)
+		)
+		( gndShieldLayer "ilList" '("Metal1" "drawing"))
 	)
 	(let 
 		()
 		(setup)
+;		(print blockLayers)
 		(drawInductor turns radius width pitch)
 		(when gndshield 
-			(drawGndShield radius+gndoverlap gndwidth gndpitch gndwindow)
+			(drawGndShield radius+gndoverlap gndShieldLayer gndwidth gndpitch gndwindow)
+		)
+		(when blockLayers 
+			(drawBlockLayers radius+gndoverlap blockLayers)
 		)
 	)
 )