/// 選択ボーンに対応するウェイトを加算する。
/// returns: ウェイトを変更したか
public bool Execute()
{
foreach (MqoSkinWeight skin_weight in vertex.skin_weights)
{
SkinWeightCommand skin_weight_command = new SkinWeightCommand(skin_weight);
this.skin_weight_commands.Add(skin_weight_command);
}
//処理前の値を記憶する。
{
int nskin_weight = 0;
foreach (MqoSkinWeight skin_weight in vertex.skin_weights)
{
this.skin_weight_commands[nskin_weight].old_attr.bone = skin_weight.bone;
this.skin_weight_commands[nskin_weight].old_attr.weight = skin_weight.weight;
nskin_weight++;
}
}
bool updated = false;
//選択ボーンに対応するウェイトを検索する。
MqoSkinWeight selected_skin_weight = null;
foreach (MqoSkinWeight skin_weight in vertex.skin_weights)
{
if (skin_weight.bone == selected_node)
{
selected_skin_weight = skin_weight;
break;
}
}
bool prepare_bone = false;
switch (weight_op)
{
case WeightOperation.Gain:
prepare_bone = weight > 0;
break;
case WeightOperation.Assign:
prepare_bone = weight > 0;
break;
}
//選択ボーンに対応するウェイトがなければ、最小値を持つウェイトを置き換える。
if (selected_skin_weight == null && prepare_bone)
{
TSONode bone = selected_node;
{
selected_skin_weight = vertex.skin_weights[3]; //前提: vertex.skin_weights の要素数は 4 かつ並び順はウェイト値の降順
selected_skin_weight.bone = bone;
selected_skin_weight.weight = 0.0f;
}
}
//選択ボーンに対応するウェイトを加算する。
if (selected_skin_weight != null)
{
updated = true;
float w0 = selected_skin_weight.weight; //変更前の対象ウェイト値
float m0 = 1.0f - w0; //変更前の残りウェイト値
float w1; //変更後の対象ウェイト値
switch (weight_op)
{
case WeightOperation.Gain:
w1 = w0 + weight;
break;
case WeightOperation.Reduce:
w1 = w0 - weight;
break;
case WeightOperation.Assign:
w1 = weight;
break;
default:
w1 = w0;
break;
}
//clamp 0.0f .. 1.0f
if (w1 > 1.0f)
{
w1 = 1.0f;
}
if (w1 < 0.0f)
{
w1 = 0.0f;
}
float d1 = w1 - w0; //実際の加算値
float m1 = 0.0f; //減算後の残りウェイト値
if (m0 != 0)
{
//残りウェイトを減算する。
foreach (MqoSkinWeight skin_weight in vertex.skin_weights)
{
if (skin_weight == selected_skin_weight)
{
continue;
}
float w2 = skin_weight.weight - skin_weight.weight * d1 / m0;
if (w2 < 0.001f)
{
w2 = 0.0f;//微小ウェイトは捨てる。
}
skin_weight.weight = w2;
m1 += w2;
}
}
selected_skin_weight.weight = 1.0f - m1;
Array.Sort(vertex.skin_weights);
}
#if false
{
int nskin_weight = 0;
foreach (MqoSkinWeight skin_weight in vertex.skin_weights)
{
Console.WriteLine("i:{0} bone:{1} w:{2}", nskin_weight, skin_weight.bone.Name, skin_weight.weight);
nskin_weight++;
}
Console.WriteLine();
}
#endif
//処理後の値を記憶する。
{
int nskin_weight = 0;
foreach (MqoSkinWeight skin_weight in vertex.skin_weights)
{
this.skin_weight_commands[nskin_weight].new_attr.bone = skin_weight.bone;
this.skin_weight_commands[nskin_weight].new_attr.weight = skin_weight.weight;
nskin_weight++;
}
}
return(updated);
}
/// スキンウェイト操作を生成します。
public SkinWeightCommand(MqoSkinWeight skin_weight)
{
this.skin_weight = skin_weight;
}