Support various kind of directions: delta angle

[lhwdev]

Currently there is one large kind of direction: angular one, which includes Known (K10, K23 ...) and Degree (23º, 87º ...).

Delta Angle

For example, direction of (3, 4) corresponds to:

• Place track block at A(0, 0), B(3, 4).
• Connect two blocks as curve.
• If this curve is straight line, direction of A/B is (3, 4).

Straight Line Placement

When delta angle is supported, it would be possible to place arbitrary line between two flexiTrak block.
When placing A, B at any direction, and connecting two block as curve with special key/control, A/B is rotated and
straight line is placed between.

Progress

• Add FlexiDirection.Delta
  • Expand FlexiTrackPlacement to support more kinds of operations
  • Add straight line placement feature

[DF5-1762]

dunno if i expressed accurately, exactly i wanna use wrench to directly adjust the Ratio angle,then players can put two (5,3) tracks on (0,0) and (5,3), and directly connect them, make a perfect straight line.