-- card: 2209 from stack: in
-- bmap block id: 6409
-- flags: 0000
-- background id: 7909
-- name: Halftone Pattern
----- HyperTalk script -----
on openCard
  hide menuBar
  hide card field "Message Center 2"
  show card field "Message Center"
  hide card button "Go Back"
  show card button "Next ..."
  set hilite of background button "Scan. Concepts" to true
  set hilite of background button "How It Works" to false
  set hilite of background button "The System" to false
  set hilite of background button "File Formats" to false
end openCard

on closeCard
  hide card field "Cover All"
  hide card button "Self-Check"
  hide card field "Message Center 2"
  show card field "Message Center"
  hide card button "Go Back"
  show card button "Next ..."
  set hilite of background button "Scan. Concepts" to true
  set hilite of background button "How It Works" to false
  set hilite of background button "The System" to false
  set hilite of background button "File Formats" to false
end closeCard



-- part 1 (field)
-- low flags: 01
-- high flags: 2004
-- rect: left=14 top=77 right=252 bottom=203
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Message Center


-- part 2 (button)
-- low flags: 00
-- high flags: 8003
-- rect: left=70 top=283 right=304 bottom=140
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Next ...
----- HyperTalk script -----
on mouseUp
  hide card field "Message Center"
  show card field "Message Center 2"
  show card button "Go Back"
  hide card button "Next ..."
end mouseUp



-- part 3 (button)
-- low flags: 80
-- high flags: 8003
-- rect: left=70 top=283 right=304 bottom=140
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Go Back
----- HyperTalk script -----
on mouseUp
  hide card field "Message Center 2"
  show card field "Message Center"
  hide card button "Go Back"
  show card button "Next ..."
end mouseUp



-- part 4 (field)
-- low flags: 81
-- high flags: 2004
-- rect: left=14 top=77 right=269 bottom=203
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Message Center 2


-- part 6 (button)
-- low flags: 80
-- high flags: A004
-- rect: left=1 top=315 right=340 bottom=511
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Self-Check
----- HyperTalk script -----
on mouseUp
  visual iris close
  hide card button "Self-Check"
  hide card field "Cover All"
  pop card
end mouseUp



-- part 7 (field)
-- low flags: 81
-- high flags: 0001
-- rect: left=5 top=272 right=310 bottom=510
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Cover All


-- part contents for card part 1
----- text -----
Halftone pattern is a set of 16 threshold levels arranged in a 4-by-4 matrix.  The numbers in the halftone pattern matrix indicate exactly the threshold at which each of the 16 dots change from white to black. 


-- part contents for card part 4
----- text -----
Halftone Patterns:
• Bayer Pattern -   
   traditional 
• Spiral Pattern - 
   traditional
• 2 x 2 Pattern - uses only  
   4 threshold levels in the 
   16 boxes (sacrifices 
   some detail for a high-
   contrast result)
• Create your own pattern