Neil Sandbach <[EMAIL PROTECTED]> wrote:
> repeat with i = 1 to 8
> member("canvas").image.draw(getAt(glistOfPointsCatA, i),
> getAt(glistOfPointsCatA, i+1),
> [#shapeType:#line, #lineSize:2, #color: rgb(150, 0, 0)])
> end repeat
Hi Neil,
If your glistOfPointsCatA has only 8 items, i+1 will be 9 when i is 8, so
getAt(glistOfPointsCatA, i+1) will be out of range. Try:
tImage = member("canvas").image.duplicate()
tOptions = [#shapeType: #line, #lineSize: 2, #color: rgb( 150, 0, 0 )]
repeat with i = 1 to 8
tStartPoint = gListOfPointsCatA[i]
if i = 8 then
tEndPoint = gListOfPointsCatA[1]
else
tEndPoint = gListOfPointsCatA[i + 1]
end if
tImage.draw(tStartPoint, tEndPoint, tOptions)
end repeat
member("canvas").image = tImage
Or (generic solution using mod):
tImage = member("canvas").image.duplicate()
tOptions = [#shapeType: #line, #lineSize: 2, #color: rgb( 150, 0, 0 )]
tCount = gListOfPointsCatA.count
repeat with i = 1 to tCount
tStartPoint = gListOfPointsCatA[i]
tEndPoint = gListOfPointsCatA[(i mod tCount) + 1]
tImage.draw(tStartPoint, tEndPoint, tOptions)
end repeat
member("canvas").image = tImage
Cheers,
James
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