CodeCity pan and default color

Hi guys,

I was playing with CodeCity. Thanks, Ricky for the effort in porting it to Pharo!

I was wondering if there is a way to pan the city? i.e., not rotating around axes, simple 2D pan.

I also have a “feature request” (that I already implemented myself): I noticed that the CCColorNormalizer lacks of a “zero” color.
In short, when you want to differentiate nodes with weight = 0.

For this I implemented a #CCColorNormalizerWithZeroColor (subclass of CCColorNormalizer) that overrides

ccValue: anObject
        | inputValue |
        inputValue := self transformation ccValue: anObject.
        inputValue isZero
                ifTrue: [ ^ self zero ]
                ifFalse: [ ^ super ccValue: anObject ]

#zero is a Color, instance variable of CCColorNormalizerWithZeroColor.

Thanks in advance,
Roby
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