define boite {
	xleft  = $1
	xright = $2
	yup    = $3
	ydown  = $4

	line from xleft,ydown to xright,ydown
	line from xleft,yup to xright,yup
	line from xleft,yup to xleft,ydown
	line from xright,yup to xright,ydown
}

define legend_line {
	cy         = $1
	lstartx    = $2
	lendx      = $3
	tstartx    = $4

.gcolor $5
	line from lstartx,cy to lendx,cy
.gcolor
	$6 ljust at tstartx,cy
}

define legend {
	xleft  = $1
	xright = $2
	yup    = $3
	ydown  = $4

	diffx = xright - xleft
	diffy = yup - ydown

	hdiff = diffy/5.7
	cy = yup - (diffy/6)
	cx = (diffx/20) + xleft

	lstartx = cx
	lendx = cx + diffx/8
	tstartx = lendx + diffx/20

.ps -2
	legend_line(cy,lstartx,lendx,tstartx,red,"RAM only")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,black,"Cached db and index")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,pink,"Common db, cached index")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,blue,"Uncached db, cached index")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,green,"Uncached db and index")
.ps +2
}

define legend_common {
	xleft  = $1
	xright = $2
	yup    = $3
	ydown  = $4

	diffx = xright - xleft
	diffy = yup - ydown

	hdiff = diffy/4.5
	cy = yup - (diffy/6)
	cx = (diffx/20) + xleft

	lstartx = cx
	lendx = cx + diffx/8
	tstartx = lendx + diffx/20

.ps -2
	legend_line(cy,lstartx,lendx,tstartx,red,"1k")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,green,"5k")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,black,"10k")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,pink,"20k")
.ps +2
}

define legend_fifo_addition {
	xleft  = $1
	xright = $2
	yup    = $3
	ydown  = $4

	diffx = xright - xleft
	diffy = yup - ydown

	hdiff = diffy/3.5
	cy = yup - (diffy/10)
	cx = (diffx/20) + xleft

	lstartx = cx
	lendx = cx + diffx/8
	tstartx = lendx + diffx/20

.ps -2
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,orange,"Basic FIFO")
	cy = cy - hdiff
	legend_line(cy,lstartx,lendx,tstartx,green,"Efficient FIFO")
.ps +2
}

# WARNING: this macro uses "cx" (current x), y_scale and "ox" (old x).
define line_no_mustache {
	# $1 = cbram
	# $2 = obram
	# $3 = column
	# $4 = color

	$1 = $3/y_scale
.gcolor $4
	if ($2 > 0) then {line from cx,$1 to ox,$2}
	bullet at cx,$1
.gcolor
	$2 = $1
}

# WARNING: this macro uses "cx" (current x), y_scale and "ox" (old x).
define line_with_mustache {
	# $1 = cbram
	# $2 = obram
	# $3 = column
	# $4 = color
	# $5 = column mustache 1
	# $6 = column mustache 2

	line_no_mustache($1,$2,$3,$4)
	line from cx,$5/y_scale to cx,$6/y_scale
}

# WARNING: this macro y_scale.
define linear_growth {
	# $1 = color
	# $2 = duration of the retrieval for a single value
	# $3 = min number of retrievals
	# $4 = max number of retrievals
.gcolor $1
line dashed from $3,($2*$3)/y_scale to $4,($2*$4)/y_scale
.gcolor
}