Greyscale bars/Display: Difference between revisions
m
→{{header|FutureBasic}}
Line 698:
</pre>
And here's another clever and shorter solution:
<lang futurebasic>void local fn BuildWindow
CGRect r = {0,0,640,400}▼
long i, j, bars = 8▼
CGFloat gray, delta, y = 0.0, w = 80▼
▲CGRect r = {0,0,640,400}
▲long i, j, bars = 8
window 1, @"Grayscale Bars", r▼
▲CGFloat gray, delta, y = 0.0, w = 80
pen -1▼
▲window 1, @"Grayscale Bars", r
for j = 1 to 4▼
delta = 1.0/(bars-1)▼
▲pen -1
if ( j mod 2 ) then gray = 0.0 else gray = 1.0 : delta = -delta▼
▲for j = 1 to 4
r = fn CGRectMake( 0, y, w, 100 )▼
▲delta = 1.0/(bars-1)
for i = 1 to bars▼
▲if ( j mod 2 ) then gray = 0.0 else gray = 1.0 : delta = -delta
rect fill r, fn ColorWithWhite( gray, 1.0 )
▲r = fn CGRectMake( 0, y, w, 100 )
r.origin.x += w▼
▲for i = 1 to bars
next▼
▲r.origin.x += w
bars = bars << 1▼
y += 100 : w = w/2▼
▲next
next▼
▲bars = bars << 1
▲y += 100 : w = w/2
▲next
end fn
fn BuildWindow
HandleEvents</lang>
=={{header|Gambas}}==
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