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+.PS
+# CrowDPV.m4
+#`Illustrates shadebox and custom crowfoot line termination'
+gen_init(svg_font(sans-serif,11bp__))
+
+# Custom macros --------------------------
+
+# `crowline(linespec,wid,ht)'
+define(`crowline',
+ `line `$1'
+ M4_E: last line.end
+ crow_wd = ifelse(`$2',,`(arrowwid*8/5)',`$2')
+ crow_ht = ifelse(`$3',,`(1.5*crow_wd)',`$3')
+ M4_P: vperp(last line); M4_P: (M4_P.x*crow_wd,M4_P.y*crow_wd)
+ M4_X: crow_ht/lin_leng(last line) between M4_E and last line.start
+ ifdpic(
+ `spline 0.4 from M4_E+M4_P to M4_X+M4_P then to M4_X-M4_P then to M4_E-M4_P',
+ `spline from M4_E+(M4_P.x,M4_P.y) to M4_X+(M4_P.x,M4_P.y) \
+ then to M4_X-(M4_P.x,M4_P.y) then to M4_E-(M4_P.x,M4_P.y)') ')
+
+define(`custombox',
+ ``$1': shadebox(box `$2',3)
+ "`$1'" at last box.n above
+ boxtext(shift(shift($@)))')
+
+define boxtext {
+ for i=1 to $+ do { move to last box.nw+(3pt__,-(2+i*11)pt__);
+ exec sprintf("\"$%g\" ljust",i) }
+ }
+
+# ----------------------------
+
+ boxwid = boxwid*1.15
+ boxsep = boxwid/2
+
+ custombox(Class,ht boxht*1.7,
+ `classkey, class_type, class_desc')
+
+ custombox(Product,ht Class.ht with .nw at Class.ne+(boxsep,0),
+ `classkey, prodkey, prod_name, pkg_type')
+
+ custombox(Sales,ht boxht*2.75 with .nw at Product.ne+(boxsep*2,13pt__),
+ `perkey, classkey, prodkey, storekey, promokey, quantity, dollars')
+
+ custombox(Period,ht Sales.ht with .nw at Sales.ne+(boxsep*2,0),
+ `perkey, date, day, week, month, qtr, year')
+
+ custombox(Market,ht Sales.ht with .nw at Class.sw+(0,-boxsep*3/2),
+ `perkey, date, day, week, month, qtr, year')
+
+ custombox(Store,ht boxht*3.2 with .sw at (Product.w,Market.s),
+ `storekey, mktkey, store_type, store_name, street, city, state, zip')
+
+ custombox(Promotion,ht Market.ht with .sw at (Period.w,Market.s),
+ `promokey, promo_type, promo_desc, value, start_date, end_date')
+
+ move to Class.ne+(0,-10pt__); crowline(to (Product.w,Here))
+
+ move to Product.ne+(0,-10pt__); crowline(to (Sales.w,Here))
+ move to last line.start+(0,-crow_wd*2.5); crowline(to (Sales.w,Here))
+T: last line.c+(0,-crow_wd*2.5)
+
+ move to Period.nw+(0,-10pt__); crowline(to (Sales.e,Here),,1.75*crow_wd)
+Q: (last line.c,0.35 between Sales.se and Sales.ne)
+
+ move to Market.ne+(0,-10pt__); crowline(to (Store.w,Here))
+ move to Store.ne+(0,-10pt__); line to (T,Here) then to T
+ crowline(to (Sales.w,Here))
+
+ move to Promotion.nw+(0,-10pt__); line to (Q,Here) then to Q
+ crowline(to (Sales.e,Here),,1.75*crow_wd)
+
+ command "</g>" # end font
+.PE