public void ShrinkToLength(float targetLength) {
// Base mesh
{
// How many rings to remove
float headPatchLength = GetPatchLength(headPatch);
int targetRings = (int)((targetLength - headPatchLength) / interval) + 1;
// Leave at least one ring
targetRings = Mathf.Max(targetRings, 1);
while (snakeMesh.Count > targetRings)
snakeMesh.PopFromStart();
}
// Tail position
{
float tailPatchLength = targetLength - GetPatchLength(headPatch) - baseLength;
float factor = tailPatchLength / interval;
ValueTransform tailRing = ValueTransform.lerp(snakeMesh.Kernel.Path[0], lastPoppedRing, factor);
tailRing.SetTransform(tail);
UpdateTailPatch(tailRing);
// UV offset
float distanceTraveled = baseDistanceTraveled - baseLength - tailPatchLength;
baseTailOffset = tailMaterial.GetUnscaledTextureOffset();
baseTailOffset.y = distanceTraveled / snakeMesh.RingLength;
tailMaterial.SetUnscaledTextureOffset(baseTailOffset);
}
}
