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draggable 機能を実装する #71

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phi-jp opened this issue Sep 3, 2013 · 0 comments

Owner

phi-jp commented Sep 3, 2013

tm.app.Object2d に draggable 機能を持たせる.

setDraggable(flag) でドラッグ有効/無効を切り替える

Event

dispach event list

Name	Description
`dragstart`	ドラッグ開始時
`drag`	ドラッグしている間
`dragend`	ドラッグ終了時

Memo

setDraggable(true) すると内部で setInteractive(true) も呼ぶ
タッチの差分(tm.input.Touch.deltaPosition)の値をキャッシュしてタッチ終了後はその平均値で慣性っぽく止まるようにする
flick~ or drag~ ってプロパティで速度やらなんやら調整できるようにする

Feature

親子関係考慮すると死ねるのでとりあえず見送る
特定の要素上に来たら drop イベントとか発行させられるようにすると良いかも. (setDroppable(true))

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