要是說『動畫』最『基本』的構想是
每秒依次間斷呈現多於十張以上之『畫格』
。以今日普通 
的標準來看，僅一分鐘的『動畫』就需要一千四百四十張『畫格』！若都徒手繪製，果真是工程浩大也耶？因此動畫軟件『工具』主要之『目的』或在如何能將此事『省時』與『省力』乎？！然而了解自己探索之『目的』，方可適切的決定使用什麼『工具』。因為一個『工具』方便於『此』，未必能方便於『彼』的吧！？
所以 9va-pi 畫格間的『自動內插』之方便性，反倒使它不適合析辨 
現象、 
運動、…… 種種現象內涵！！？？
舉例而言，設想研究一個色點作『 ☆ 』變化的『運動感知』性，如下圖繪有六張畫格，第六格也就是第一格。從第一格起，這五格裡的色點分別位於『一筆劃 ☆ 』的五個頂點上。這個打算用『格率』 frame rate 來探討『視覺感知』，
並不能達成初衷，所得結果如下，
如是，我們若從 9va-pi 簡單的『紅』與『藍』之中介『變色』
現象，當可推知用 9va-pi 來作
What is actually shown: First a blue dot is shown at the top of the screen, followed by a period of blank screen. Finally a red dot is shown at the bottom of the screen.
Subjects report seeing a dot that moves from the top to the bottom. The dot changes color midway through its path.
實驗之不可行的了。
故而趁此機會介紹讀者兩套知名的『動畫』編輯軟體︰
Pencil2D – opensource animation software
About
Pencil2D is a free and open-source 2D animation software available for Windows, Mac OS, and Linux. You can download the latest version HERE.
Pencil2D uses a bitmap/vector drawing interface to produce simple 2D graphics as well as animation. Pencil is written in C++ and is Qt-based, as well as licensed under the GNU General Public License.
Originally created by Patrick Corrieri, as a simple “pencil test” program, it was extended afterwards mainly by Pascal Naidon until It was abandoned. Pencil2D is a collaborative effort initiated by Matt Chang and currently in development.
This website intends to be a place, a community, where people can talk about the software and animation in general, eventually helping each other to make it happen!
……
“…That was the original idea from day one – the elimination of the tweening process. But it is certainly not the only feature of Synfig that makes it unique. In addition to eliminating the tweening process, I also wanted Synfig to be used for pretty much every part of production except story-boarding and editing.”
About
Synfig Studio is a free and open-source 2D animation software, designed as powerful industrial-strength solution for creating film-quality animation using a vector and bitmap artwork. It eliminates the need to create animation frame-by frame, allowing you to produce 2D animation of a higher quality with fewer people and resources. Synfig Studio is available for Windows, Linux and MacOS X.
……
這兩套工具，在 raspbian jessie 上安裝十分簡單，只需
sudo apt-get install pencil2d synfigstudio
即可。