Affine transforms - matrix algebra

[Richard Bair]

Hi Pavel,

Before approving I want Jim Graham to have a look. He's been on vacation, I think he either gets back today or next week.

Thanks!
Richard

On Jul 16, 2012, at 4:37 AM, Pavel Safrata wrote:

> Hi Kirill,
> it is just for convenience. The point is that if you have algorithms or other libraries that use the fourth row, you can work with the array right away.
> Regards,
> Pavel
> 
> On 16.7.2012 13:28, Kirill.Prazdnikov wrote:
>> Hi Pavel,
>> 
>>>    public Affine(double[] matrix)
>>>        // accepts arrays of length 6, 12 and 16.
>>>        // In case of 16 members the last four numbers must be 0, 0, 0, 1
>>>        // throws IllegalArgument if the above conditions are not met 
>> 
>> What is the point of setting 4x4 matrix of the last row must be 0,0,0,1 ?
>> Should we remove 4x4 case at all ?
>> 
>> Thanks
>> 
>> 
> 
>