On 19 April 2012 18:27, Denis Kudriashov <dionisiydk@gmail.com> wrote:

It's so great stuff!!! :))

Is cairo used as athens backend for this demo?

Is it should work with Bitblt backend?

In demo I see many usage of angel parameter for transformations. Do you

think about "angel unit objects" like "90 degrees" or "2 radians" instead of

raw numbers ?

there are two methods -  rotateByRadians: and rotateByDegrees:
It makes things more explicit, while if i just have
rotate: or rotateBy:, then it will be a bit ambiguous, whether
argument angle is in radians or degrees
(different frameworks assuming  different things to be default)

How #scaledBy: works with Point argument (self extend) and Float like (frame

/ 100 sin abs) at the same time? What' logic?

for uniform scale, you provide a sole number, and for non-uniform - a point,
with x and y scale factors separately.
There is a scaleX:Y: method, while scaleBy: is more for convenience.

Best regards,

Denis

2012/4/19 Igor Stasenko <siguctua@gmail.com>

Hello, all

I recorded a small introductory video about Athens.

Here it is:

http://vimeo.com/40653315

(about 21 minutes).

I explain some basic stuff like drawing things using Athens canvas,

building paths, use of transformation matrices etc.

Please note, this is a first video i ever recorded in such context in

my life, so don't be too harsh :)

Also, note that the animations are jagged because of video recording

frame rate, not because it is that slow in reality.

There are still a blog post pending about it.. which i plan to finish

when i will finish ;)

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Best regards,

Igor Stasenko.

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Best regards,
Igor Stasenko.