@ue-too/board / index / angleSpan

函式: angleSpan()

angleSpan(from, to): number

定義於: packages/board/src/camera/utils/rotation.ts:274

Calculates the signed angular distance between two angles, taking the shorter path.

參數

from

number

Starting angle in radians

to

number

Target angle in radians

回傳

number

Signed angular difference in radians, in the range (-π, π]

備註

Returns the shortest angular path from from to to:

• Positive value: rotate counter-clockwise (positive direction)
• Negative value: rotate clockwise (negative direction)
• Always returns the smaller of the two possible paths

範例

angleSpan(0, Math.PI/2);        // π/2 (90° ccw)
angleSpan(Math.PI/2, 0);        // -π/2 (90° cw)
angleSpan(0, 3*Math.PI/2);      // -π/2 (shorter to go cw)
angleSpan(3*Math.PI/2, 0);      // π/2 (shorter to go ccw)
angleSpan(0, Math.PI);          // π (180°, ambiguous)