[OpenJDK 2D-Dev] <AWT Dev> Question: Area changes order of points

[Jim Graham]

Hi Steve,

Area simplifies the shape into a normalized version that defines the 
same interior area.  It does not care what the original ordering of the 
points was as it internalizes the shape, all it cares about is which 
areas are geometrically inside vs. outside and it creates a path 
according to its own internal policies that defines the same 
inside/outside boundaries.

There is no "trick" to customizing this behavior and I'm not entirely 
sure why the point ordering would matter when you are performing CAG 
(Constructive Area Geometry) operations - only interiors and exteriors 
should matter.

			...jim

On 10/5/15 8:19 AM, Sergey Bylokhov wrote:
> Hello,
> I think this question is related to java2d, correct alias cc.
>
> On 24.09.15 12:53, Hruda, Steve wrote:
>> I use the java.awt.geom.Area class to clip a shape. Today I noticed that
>> new Area(Shape) changes the orientation of the shape, so that I get the
>> points of the Area counter-clockwise in every case.
>>
>> The following test shows you my problem.
>>
>> https://drive.google.com/file/d/0B7P_rknS1TWxVGJ6a3hBaElBTk0/view?usp=sharing
>>
>>
>> Is this a bug or do I something wrong?
>>
>> Is there a trick to get the points in the correct order?
>
>