; frame_rect - cuts along the perimeter of a rectangle (inside or outside).
; Supports optional corner radii.
; Requires globals: #<_z_top>, #<_z_bot>
; Requires tool loaded (uses #5410 for diameter)
; Optional global:  #<_z_clearance>
o<frame_rect> sub
	; o<frame_rect> call [mode] [x1][y1] [x2][y2] [radius]
	; #1=mode #2=x1 #3=y1 #4=x2 #5=y2 #6=radius

	#<M_CONVENTIONAL> = [FIX[#1/1] MOD 2 EQ 1]
	#<M_OUTSIDE>      = [FIX[#1/8] MOD 2 EQ 1]
	#<M_CLIMB>        = [FIX[#1/1] MOD 2 EQ 0]
	#<M_INSIDE>       = [FIX[#1/8] MOD 2 EQ 0]

	G90
	G91.1
	M101
	G17

	#<td> = #5410
	#<tr> = [#<td>/2]
	o1 if [EXISTS[#<_z_clearance>]]
		#<z_clearance> = #<_z_clearance>
	o1 else
		#<z_clearance> = #<_z_top>
	o1 endif

	#<minx> = #2
	#<maxx> = #4
	o3 if [#4 LT #2]
		#<minx> = #4
		#<maxx> = #2
	o3 endif
	#<miny> = #3
	#<maxy> = #5
	o4 if [#5 LT #3]
		#<miny> = #5
		#<maxy> = #3
	o4 endif

	G0 Z#<z_clearance>

	o10 if [#<M_INSIDE> AND #<M_CONVENTIONAL>]
		G0 X[[#2+#4]/2] Y[[#3+#5]/2]
		G0 Z#<_z_top>
		G1 Z#<_z_bot>
		G1 X[#<maxx>-#<tr>]
		o102 if [#6 GT #<tr>]
			G1 Y[#<miny>+#6]
			G2 X[#<maxx>-#6] Y[#<miny>+#<tr>] J0 I[-#6+#<tr>]
			G1 X[#<minx>+#6]
			G2 Y[#<miny>+#6] X[#<minx>+#<tr>] I0 J[+#6-#<tr>]
			G1 Y[#<maxy>-#6]
			G2 X[#<minx>+#6] Y[#<maxy>-#<tr>] J0 I[+#6-#<tr>]
			G1 X[#<maxx>-#6]
			G2 Y[#<maxy>-#6] X[#<maxx>-#<tr>] I0 J[-#6+#<tr>]
		o102 else
			G1 Y[#<miny>+#<tr>]
			G1 X[#<minx>-#<tr>]
			G1 Y[#<maxy>-#<tr>]
			G1 X[#<maxx>-#<tr>]
			G1 Y[#<miny>+#<tr>]
		o102 endif
		G1 Y[[#3+#5]/2]
		G0 X[[#2+#4]/2] Y[[#3+#5]/2]
		G0 Z#<_z_top>

	o10 elseif [#<M_INSIDE> AND #<M_CLIMB>]
		G0 X[[#2+#4]/2] Y[[#3+#5]/2]
		G0 Z#<_z_top>
		G1 Z#<_z_bot>
		G1 X[#<maxx>-#<tr>]
		o101 if [#6 GT #<tr>]
			G1 Y[#<maxy>-#6]
			G3 X[#<maxx>-#6] Y[#<maxy>-#<tr>] J0 I[-#6+#<tr>]
			G1 X[#<minx>+#6]
			G3 Y[#<maxy>-#6] X[#<minx>+#<tr>] I0 J[-#6+#<tr>]
			G1 Y[#<miny>+#6]
			G3 X[#<minx>+#6] Y[#<miny>+#<tr>] J0 I[+#6-#<tr>]
			G1 X[#<maxx>-#6]
			G3 Y[#<miny>+#6] X[#<maxx>-#<tr>] I0 J[+#6-#<tr>]
		o101 else
			G1 Y[#<maxy>-#<tr>]
			G1 X[#<minx>+#<tr>]
			G1 Y[#<miny>+#<tr>]
			G1 X[#<maxx>-#<tr>]
			G1 Y[#<maxy>-#<tr>]
		o101 endif
		G1 Y[[#3+#5]/2]
		G0 X[[#2+#4]/2] Y[[#3+#5]/2]
		G0 Z#<_z_top>

	o10 elseif [#<M_OUTSIDE> AND #<M_CONVENTIONAL>]
		G0 X[#<minx>-#<tr>] Y[#<maxy>+#<tr>]
		G0 Z#<_z_top>
		G1 Z#<_z_bot>
		o104 if [#6 GT 0]
			G1 Y[#<miny>+#6]
			G3 X[#<minx>+#6] Y[#<miny>-#<tr>] J0 I[+#6+#<tr>]
			G1 X[#<maxx>-#6]
			G3 Y[#<miny>+#6] X[#<maxx>+#<tr>] I0 J[+#6+#<tr>]
			G1 Y[#<maxy>-#6]
			G3 X[#<maxx>-#6] Y[#<maxy>+#<tr>] J0 I[-#6-#<tr>]
			G1 X[#<minx>+#6]
			G3 Y[#<maxy>-#6] X[#<minx>-#<tr>] I0 J[-#6-#<tr>]
		o104 else
			G1 Y[#<miny>-#<tr>]
			G1 X[#<maxx>+#<tr>]
			G1 Y[#<maxy>+#<tr>]
			G1 X[#<minx>-#<tr>]
		o104 endif
		G0 Z#<_z_top>

	o10 elseif [#<M_OUTSIDE> AND #<M_CLIMB>]
		G0 X[#<minx>-#<tr>] Y[#<miny>-#<tr>]
		G0 Z#<_z_top>
		G1 Z#<_z_bot>
		o103 if [#6 GT 0]
			G1 Y[#<maxy>-#6]
			G2 X[#<minx>+#6] Y[#<maxy>+#<tr>] J0 I[+#6+#<tr>]
			G1 X[#<maxx>-#6]
			G2 Y[#<maxy>-#6] X[#<maxx>+#<tr>] I0 J[-#6-#<tr>]
			G1 Y[#<miny>+#6]
			G2 X[#<maxx>-#6] Y[#<miny>-#<tr>] J0 I[-#6-#<tr>]
			G1 X[#<minx>+#6]
			G2 Y[#<miny>+#6] X[#<minx>-#<tr>] I0 J[+#6+#<tr>]
		o103 else
			G1 Y[#<maxy>+#<tr>]
			G1 X[#<maxx>+#<tr>]
			G1 Y[#<miny>-#<tr>]
			G1 X[#<minx>-#<tr>]
		o103 endif
		G0 Z#<_z_top>
	o10 endif

o<frame_rect> endsub

M2