Design: 04.01.05/P03

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PROGRAM 3: Appearance of fill area interiors

CHARACTERISTICS: ynny

OPERATOR SCRIPT:

INTERIOR OF SELF-OVERLAPPING FILL AREAS: All the squares should
contain a multi-point fill area with the interior filled.
Identify the fill area whose interior is filled differently from
that of the others.

INTERIOR OF CONCAVE FILL AREAS: Same as INTERIOR OF
SELF-OVERLAPPING FILL AREAS, above.

DESIGN:

<inquire interior facilities> to determine if
   solid, hatch, pattern interior style is supported:
if (SOLID, HATCH, or PATTERN is not available)
   message: cannot test interior filling algorithm
   goto end_it_all
endif

if (HATCH available) then
   ihat = hatch style picked by operator, preferably dense and
          diagonal
endif
if (PATTERN available) then
   ipat = 1
   define pattern #ipat as simple checkerboard pattern
   set pattern size to reasonable value
endif

Divide screen up into 6 square labelled areas for all tests

*** *** ***   interior of self-overlapping polygon   *** *** ***

fillok = true
set up coordinates for overlapping fill area

for each available intsty = SOLID, HATCH, PATTERN
   ran6 = random order for 1-6
   set interior style = intsty
   if (intsty=HATCH) then
      set interior style index = ihat
   elseif (intsty=PATTERN) then
      set interior style index = ipat
   endif
   for ix = 1 to 6
      this = ran6(ix)
      this:
          1 - simulate the figure, filling in the wrong interiors
          2 - simulate the figure, filled correctly
          3 - generate the overlapping 3D fill area
          4 - generate the overlapping 3D fill area,
              reverse order of point list
          5 - generate the overlapping 2D fill area
          6 - generate the overlapping 2D fill area,
              reverse order of point list
   next ix

   OPQA/INTERIOR OF SELF-OVERLAPPING FILL AREAS: Which figure is
      different?
   if (operator selects #1) then
      OK so far
   else
      fillok = false
      message about failure for intsty
   endif
next intsty

TEST: #SR 1 4 7 8
      "The interior of a self-overlapping fill area should be
       filled correctly."
pass/fail depending on (fillok)

*** *** ***   interior of concave spiral polygon   *** *** ***

fillok = true
set up coordinates for spiral fill area
for each available intsty = SOLID, HATCH, PATTERN
   ran6 = random order for 1-6
   set interior style = intsty
   if (intsty=HATCH) then
      set interior style index = ihat
   elseif (intsty=PATTERN) then
      set interior style index = ipat
   endif
   for ix = 1 to 6
      this = ran6(ix)
      this:
          1 - simulate the figure, filling in the wrong interiors
          2 - simulate the figure, filled correctly
          3 - generate the spiral 3D fill area
          4 - generate the spiral 3D fill area,
              reverse order of point list
          5 - generate the spiral 2D fill area
          6 - generate the spiral 2D fill area,
              reverse order of point list
   next ix

   OPQA/INTERIOR OF CONCAVE FILL AREAS: Which figure is
      different?
   if (operator selects #1) then
      OK so far
   else
      fillok = false
      message about failure for intsty
   endif
next intsty

TEST: #SR 1 4 7 8
      "The interior of a concave spiral fill area should be
       filled correctly."
pass/fail depending on (fillok)

end_it_all:

END PROGRAM 3