8287c54432
Replaced the old VS templates with ones that offer more flexiblity. Started replacing the Content Project for the samples with our custom project type. Inlcuded a basic not yet working AssimpImporter.
96 lines
3.5 KiB
C#
96 lines
3.5 KiB
C#
#region Using Statements
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Collections.ObjectModel;
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#endregion
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// This file is part of the ANX.Framework created by the
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// "ANX.Framework developer group" and released under the Ms-PL license.
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// For details see: http://anxframework.codeplex.com/license
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namespace ANX.Framework.Content.Pipeline.Graphics
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{
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public class BoneWeightCollection : Collection<BoneWeight>
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{
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public BoneWeightCollection()
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: base(new List<BoneWeight>())
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{
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}
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/// <summary>
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/// Normalizes the contents of the bone weights list.
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/// </summary>
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/// <remarks>
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/// Normalization does the following:
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/// <list type="bullet">
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/// <item>Sorts weights such that the most significant weight is first.</item>
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/// <item>Removes zero-value entries.</item>
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/// <item>Discards weights with the smallest value until there are maxWeights or less in the list.</item>
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/// <item>Adjusts values so the sum equals one.</item>
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/// </list>
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/// </remarks>
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/// <exception cref="System.InvalidContentException">Gets thrown if all weights are zero.</exception>
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/// <exception cref="System.ArgumentOutOfRangeException">Gets thrown if maxWeights less or equal to zero.</exception>
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public void NormalizeWeights()
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{
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this.NormalizeWeights(int.MaxValue);
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}
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/// <summary>
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/// Normalizes the contents of the bone weights list.
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/// </summary>
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/// <remarks>
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/// Normalization does the following:
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/// <list type="bullet">
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/// <item>Sorts weights such that the most significant weight is first.</item>
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/// <item>Removes zero-value entries.</item>
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/// <item>Discards weights with the smallest value until there are maxWeights or less in the list.</item>
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/// <item>Adjusts values so the sum equals one.</item>
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/// </list>
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/// </remarks>
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/// <param name="maxWeights">Maximum number of weights allowed.</param>
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/// <exception cref="System.InvalidContentException">Gets thrown if all weights are zero.</exception>
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/// <exception cref="System.ArgumentOutOfRangeException">Gets thrown if maxWeights less or equal to zero.</exception>
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public void NormalizeWeights(int maxWeights)
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{
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if (maxWeights <= 0)
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throw new ArgumentOutOfRangeException("maxWeights");
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((List<BoneWeight>)Items).Sort((left, right) => right.Weight.CompareTo(left.Weight));
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float accumulatedValue = 0f;
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for (int i = 0; i < Count; i++)
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{
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var weight = Items[i].Weight;
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if (weight <= 0f || i >= maxWeights)
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{
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this.RemoveAt(i);
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i--;
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}
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else
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{
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accumulatedValue += weight;
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}
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}
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if (accumulatedValue == 0f)
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{
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throw new InvalidContentException(string.Format("All weights are zero."));
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}
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if (accumulatedValue != 0f)
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{
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for (int i = 0; i < Count; i++)
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{
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this[i] = new BoneWeight(this[i].BoneName, accumulatedValue / this[i].Weight);
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}
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}
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}
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}
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}
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