public float getDistanceBoneToVertex(IPEBone bone, IPEVertex vertex)
{
if (bone.To != -1 && bone.To != 0)
{
V3 from = (V3)bone.Position;
V3 to = (V3)this.PMD.Bone[bone.To].Position;
V3 v = (V3)vertex.Position;
float d1, d2, d3;
d1 = (v - from).Length();
d2 = (v - to).Length();
V3 line = to - from;
V3 dif = v - from;
if (line.Length() > 0.00001f)
{
d3 = (Cross(line, dif)).Length() / line.Length();
}
else
{
d3 = 100000f;
}
if (line.Length() > 0)
{
float difDot = Dot(line, dif) / line.Length();
//垂線の足がボーン上
if (difDot > 0 && difDot < line.Length())
{
return(Math.Min(d1, Math.Min(d2, d3)));
}
}
return(Math.Min(d1, d2));
}
else
{
V3 dif = (V3)((V3)vertex.Position - (V3)bone.Position);
return(dif.Length());
}
}