92 lines
3.1 KiB
C#
92 lines
3.1 KiB
C#
|
using System;
|
||
|
|
using UnityEngine;
|
||
|
|
|
||
|
|
namespace UnityEditor.U2D.Animation
|
||
|
|
{
|
||
|
|
internal static class BoneWeightExtensions
|
||
|
|
{
|
||
|
|
public static int GetBoneIndex(this BoneWeight boneWeight, int channelIndex)
|
||
|
|
{
|
||
|
|
if (channelIndex < 0 || channelIndex >= 4)
|
||
|
|
throw new ArgumentOutOfRangeException("Channel index out of range");
|
||
|
|
|
||
|
|
if (channelIndex == 0)
|
||
|
|
return boneWeight.boneIndex0;
|
||
|
|
if (channelIndex == 1)
|
||
|
|
return boneWeight.boneIndex1;
|
||
|
|
if (channelIndex == 2)
|
||
|
|
return boneWeight.boneIndex2;
|
||
|
|
if (channelIndex == 3)
|
||
|
|
return boneWeight.boneIndex3;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void SetBoneIndex(ref BoneWeight boneWeight, int channelIndex, int boneIndex)
|
||
|
|
{
|
||
|
|
if (channelIndex < 0 || channelIndex >= 4)
|
||
|
|
throw new ArgumentOutOfRangeException("Channel index out of range");
|
||
|
|
|
||
|
|
if (channelIndex == 0)
|
||
|
|
boneWeight.boneIndex0 = boneIndex;
|
||
|
|
if (channelIndex == 1)
|
||
|
|
boneWeight.boneIndex1 = boneIndex;
|
||
|
|
if (channelIndex == 2)
|
||
|
|
boneWeight.boneIndex2 = boneIndex;
|
||
|
|
if (channelIndex == 3)
|
||
|
|
boneWeight.boneIndex3 = boneIndex;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static float GetWeight(this BoneWeight boneWeight, int channelIndex)
|
||
|
|
{
|
||
|
|
if (channelIndex < 0 || channelIndex >= 4)
|
||
|
|
throw new ArgumentOutOfRangeException("Channel index out of range");
|
||
|
|
|
||
|
|
if (channelIndex == 0)
|
||
|
|
return boneWeight.weight0;
|
||
|
|
if (channelIndex == 1)
|
||
|
|
return boneWeight.weight1;
|
||
|
|
if (channelIndex == 2)
|
||
|
|
return boneWeight.weight2;
|
||
|
|
if (channelIndex == 3)
|
||
|
|
return boneWeight.weight3;
|
||
|
|
return 0f;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void SetWeight(ref BoneWeight boneWeight, int channelIndex, float weight)
|
||
|
|
{
|
||
|
|
if (channelIndex < 0 || channelIndex >= 4)
|
||
|
|
throw new ArgumentOutOfRangeException("Channel index out of range");
|
||
|
|
|
||
|
|
if (channelIndex == 0)
|
||
|
|
boneWeight.weight0 = weight;
|
||
|
|
if (channelIndex == 1)
|
||
|
|
boneWeight.weight1 = weight;
|
||
|
|
if (channelIndex == 2)
|
||
|
|
boneWeight.weight2 = weight;
|
||
|
|
if (channelIndex == 3)
|
||
|
|
boneWeight.weight3 = weight;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static float Sum(this BoneWeight boneWeight)
|
||
|
|
{
|
||
|
|
return boneWeight.weight0 + boneWeight.weight1 + boneWeight.weight2 + boneWeight.weight3;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static BoneWeight Normalized(this BoneWeight boneWeight)
|
||
|
|
{
|
||
|
|
var sum = boneWeight.Sum();
|
||
|
|
|
||
|
|
if (sum == 0 || sum == 1f)
|
||
|
|
return boneWeight;
|
||
|
|
|
||
|
|
var normalized = boneWeight;
|
||
|
|
var sumInv = 1f / sum;
|
||
|
|
|
||
|
|
for (var i = 0; i < 4; ++i)
|
||
|
|
SetWeight(ref normalized, i, normalized.GetWeight(i) * sumInv);
|
||
|
|
|
||
|
|
return normalized;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|