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Make callbacks optional

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This commit is contained in:
Robert Machmer 2016-01-09 13:03:50 +01:00
parent 020713b4c3
commit 6c0bd6b50a
1 changed files with 10 additions and 2 deletions
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12
fd/Graph.lua
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@ -121,7 +121,10 @@ function Graph.new()
for _, edge in pairs( edges ) do
edge.origin:attractTo( edge.target );
edge.target:attractTo( edge.origin );
edgeCallback( edge );
if edgeCallback then
edgeCallback( edge );
end
end
resetBoundaries();
@ -135,7 +138,10 @@ function Graph.new()
end
nodeA:move( dt );
end
nodeCallback( nodeA );
if nodeCallback then
nodeCallback( nodeA );
end
minX, maxX, minY, maxY = updateBoundaries( minX, maxX, minY, maxY, nodeA:getPosition() );
end
@ -159,10 +165,12 @@ function Graph.new()
--
function self:draw( nodeCallback, edgeCallback )
for _, edge in pairs( edges ) do
if not edgeCallback then break end
edgeCallback( edge );
end
for _, node in pairs( nodes ) do
if not nodeCallback then break end
nodeCallback( node );
end
end