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[ts] Port of commit 3ea4f66. AnimationState, fixed rotation mix when direction changes. See #2158.

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This commit is contained in:
Mario Zechner 2022-10-06 16:23:37 +02:00
parent 6cdbe81d49
commit 33b31aeadd
1 changed files with 13 additions and 9 deletions
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22
spine-ts/spine-core/src/AnimationState.ts
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@ -394,17 +394,21 @@ export class AnimationState {
lastTotal = 0;
lastDiff = diff;
} else {
lastTotal = timelinesRotation[i]; // Angle and direction of mix, including loops.
lastDiff = timelinesRotation[i + 1]; // Difference between bones.
lastTotal = timelinesRotation[i];
lastDiff = timelinesRotation[i + 1];
}
let current = diff > 0, dir = lastTotal >= 0;
// Detect cross at 0 (not 180).
if (MathUtils.signum(lastDiff) != MathUtils.signum(diff) && Math.abs(lastDiff) <= 90) {
// A cross after a 360 rotation is a loop.
if (Math.abs(lastTotal) > 180) lastTotal += 360 * MathUtils.signum(lastTotal);
dir = current;
let loops = lastTotal - lastTotal % 360;
total = diff + loops;
let current = diff >= 0, dir = lastTotal >= 0;
if (Math.abs(lastDiff) <= 90 && MathUtils.signum(lastDiff) != MathUtils.signum(diff)) {
if (Math.abs(lastTotal - loops) > 180) {
total += 360 * MathUtils.signum(lastTotal);
dir = current;
} else if (loops != 0)
total -= 360 * MathUtils.signum(lastTotal);
else
dir = current;
}
total = diff + lastTotal - lastTotal % 360; // Store loops as part of lastTotal.
if (dir != current) total += 360 * MathUtils.signum(lastTotal);
timelinesRotation[i] = total;
}