*
| - | objects | invalidate area | keyup | animation | - |
| 1 | |||||
| 2 | |||||
| 3 | rect15, rect 17 | rect 17(on a little band) | (v) | (v) | |
| 4 | rect15, rect 17 | rect 17(on a little band)- | (-) | (v) | |
| - |
*
All cases with cursol invalidated area will be a on a band area.
*invalidate curosol
We invalidate 2 rects position which are previous and current cursol's positions if we focus on cursol on the animation.
previous: px1, py1, px2, py2
current: cx1, cy1, cx2, cy2
