RFR: 8255415: Nested calls to snap methods in Region give different results [v2]

[Jose Pereda]

On Tue, 27 Oct 2020 10:44:00 GMT, Johan Vos <jvos at openjdk.org> wrote:

>> Jose Pereda has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update JBS reference in RegionTest
>
> modules/javafx.graphics/src/main/java/javafx/scene/layout/Region.java line 303:
> 
>> 301:     }
>> 302: 
>> 303:     private static double scaledCeil(double value, double scale) {
> 
> Can you explicitly add here that this method guarantees 
> `scaledCeil(scaledCeil(val, scale), scale) == scaledCeil (val, scale)` 
> 
> It seems other code already assumed this, but it should not be taken for granted, so now that your fix assures this is the case, it can be taken for granted.

Ok, makes sense, I will add that.

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PR: https://git.openjdk.java.net/jfx/pull/336