Things can be modified

[logic-finder]

Optimazation

• Record the mouse cursor animation and play it (no need to calculate every time).
• Mouse cursor has four lines but each two lines are symmetric. Calculate only two lines and rotate.
• Undo/redo:
  • It seems that saving the canvas itself occupy 8MB (approx.) when the monitor size is 1920x1080.
  • This is heavy. I think it may be possible to solve this problem by: 1) making an array and a linked list 2) saving mouse coordinates to the array and save a last index of each mouse movement up to last n counts 3) drawing a trace up to that index when undo/redo.

Custom

• It may be possible to process the webcam data by not passing it to the <video> element, but to <canvas> element in order to apply some filtering.

User experience

• When the mouse cursor is located at corners of the screen, make the palette appear at an appropriate place.

Different approach

• It seems that getting global click events can also be achieved by GetAsyncKeyState().