private MassSpringCloth.ClothConstraint GetConstraint(
ref MassSpringCloth.ClothPoint p1,
ref MassSpringCloth.ClothPoint p2,
MassSpringCloth.SpringType type)
{
if (p1 == null || p2 == null)
{
return(null);
}
return(new MassSpringCloth.ClothConstraint(
p1,
p2,
(p2.position - p1.position).magnitude,
type));
}
// Start is called before the first frame update
void Start()
{
massSpringCloth = GetComponent <MassSpringCloth>();
// Initialize
// 頂点
clothPoints = new MassSpringCloth.ClothPoint[div * div];
int px = 0;
int py = 0;
foreach (Transform bone in rootBone.transform)
{
//Debug.Log(bone.name);
var weight = py == 0 ? 0.0f : 1.0f;
clothPoints[(py * div) + px] = new MassSpringCloth.ClothPoint(bone, weight);
px++;
if (px >= div)
{
px = 0;
py++;
}
}
// Constraint
constraints = new MassSpringCloth.ClothConstraint[(div * div) * 6];
for (int y = 0; y < div; y++)
{
for (int x = 0; x < div; x++)
{
// 構成バネ
// 左
if (x > 0)
{
constraints[(div * y * 6) + (x * 6)] = GetConstraint(ref clothPoints[(div * y) + x], ref clothPoints[(div * y) + x - 1], MassSpringCloth.SpringType.Structual);
}
else
{
constraints[(div * y * 6) + (x * 6)] = null;
}
// 上
if (y + 1 < div)
{
constraints[(div * y * 6) + ((x * 6) + 1)] = GetConstraint(ref clothPoints[(div * y) + x], ref clothPoints[(div * (y + 1)) + x], MassSpringCloth.SpringType.Structual);
}
else
{
constraints[(div * y * 6) + ((x * 6) + 1)] = null;
}
// せん断バネ
// 左上
if (x > 0 && y + 1 < div)
{
constraints[(div * y * 6) + ((x * 6) + 2)] = GetConstraint(ref clothPoints[(div * y) + x], ref clothPoints[(div * (y + 1)) + x - 1], MassSpringCloth.SpringType.Shear);
}
else
{
constraints[(div * y * 6) + ((x * 6) + 2)] = null;
}
// 右上
if (x + 1 < div && y + 1 < div)
{
constraints[(div * y * 6) + ((x * 6) + 3)] = GetConstraint(ref clothPoints[(div * y) + x], ref clothPoints[(div * (y + 1)) + x + 1], MassSpringCloth.SpringType.Shear);
}
else
{
constraints[(div * y * 6) + ((x * 6) + 3)] = null;
}
// 曲げバネ
// 左
if (x > 1)
{
constraints[(div * y * 6) + ((x * 6) + 4)] = GetConstraint(ref clothPoints[(div * y) + x], ref clothPoints[(div * y) + x - 2], MassSpringCloth.SpringType.Bending);
}
else
{
constraints[(div * y * 6) + ((x * 6) + 4)] = null;
}
// 上
if (y + 1 < div - 1)
{
constraints[(div * y * 6) + ((x * 6) + 5)] = GetConstraint(ref clothPoints[(div * y) + x], ref clothPoints[(div * (y + 2)) + x], MassSpringCloth.SpringType.Bending);
}
else
{
constraints[(div * y * 6) + ((x * 6) + 5)] = null;
}
}
}
massSpringCloth.Initialize(clothPoints, constraints);
}
