/*
* private static void FillCap_Method2(List<int> indices)
* {
*
* // center of the cap
* Vector3 center = Vector3.zero;
* foreach (var index in indices)
* center += _newVerticesCache[index];
*
* center = center / indices.Count;
*
* // you need an axis based on the cap
* Vector3 upward = Vector3.zero;
* // 90 degree turn
* upward.x = _blade.normal.y;
* upward.y = -_blade.normal.x;
* upward.z = _blade.normal.z;
* Vector3 left = Vector3.Cross(_blade.normal, upward);
*
* Vector3 displacement = Vector3.zero;
* Vector2 newUV1 = Vector2.zero;
* Vector2 newUV2 = Vector2.zero;
*
* for (int i = 0; i < indices.Count - 1; i++)
* {
*
* displacement = _newVerticesCache[indices[i]] - center;
* newUV1 = Vector3.zero;
* newUV1.x = 0.5f + Vector3.Dot(displacement, left);
* newUV1.y = 0.5f + Vector3.Dot(displacement, upward);
* //newUV1.z = 0.5f + Vector3.Dot(displacement, _blade.normal);
*
* displacement = _newVerticesCache[indices[i + 1]] - center;
* newUV2 = Vector3.zero;
* newUV2.x = 0.5f + Vector3.Dot(displacement, left);
* newUV2.y = 0.5f + Vector3.Dot(displacement, upward);
* //newUV2.z = 0.5f + Vector3.Dot(displacement, _blade.normal);
*
*
*
* _newTriangleCache.vertices[0] = _newVerticesCache[indices[i]];
* _newTriangleCache.uvs[0] = newUV1;
* _newTriangleCache.normals[0] = -_blade.normal;
* _newTriangleCache.tangents[0] = Vector4.zero;
*
* _newTriangleCache.vertices[1] = _newVerticesCache[indices[i + 1]];
* _newTriangleCache.uvs[1] = newUV2;
* _newTriangleCache.normals[1] = -_blade.normal;
* _newTriangleCache.tangents[1] = Vector4.zero;
*
* _newTriangleCache.vertices[2] = center;
* _newTriangleCache.uvs[2] = new Vector2(0.5f, 0.5f);
* _newTriangleCache.normals[2] = -_blade.normal;
* _newTriangleCache.tangents[2] = Vector4.zero;
*
*
* NormalCheck(ref _newTriangleCache);
*
* _leftSide.AddTriangle(_newTriangleCache, _capMatSub);
*
* _newTriangleCache.normals[0] = _blade.normal;
* _newTriangleCache.normals[1] = _blade.normal;
* _newTriangleCache.normals[2] = _blade.normal;
*
* NormalCheck(ref _newTriangleCache);
*
* _rightSide.AddTriangle(_newTriangleCache, _capMatSub);
*
* }
* }
*/
#endregion
#region Misc.
//法線のチェック（ポリゴンの向きをチェック）
private static void NormalCheck(ref MeshMaker.Triangle triangle)
{
// 2ベクトルの法線ベクトル
// ポリゴンの法線ベクトルの算出
Vector3 crossProduct = Vector3.Cross(triangle.vertices[1] - triangle.vertices[0], triangle.vertices[2] - triangle.vertices[0]);
// 3点の重心から出る法線ベクトル
Vector3 averageNormal = (triangle.normals[0] + triangle.normals[1] + triangle.normals[2]) / 3.0f;
// 2ベクトル間の内積を求める
float dotProduct = Vector3.Dot(averageNormal, crossProduct);
// 内積が負＝面の向きが違う
if (dotProduct < 0)
{
// 3点の始点0と終点2を入れ替えて、表裏を入れ替える
Vector3 temp = triangle.vertices[2];
triangle.vertices[2] = triangle.vertices[0];
triangle.vertices[0] = temp;
temp = triangle.normals[2];
triangle.normals[2] = triangle.normals[0];
triangle.normals[0] = temp;
Vector2 temp2 = triangle.uvs[2];
triangle.uvs[2] = triangle.uvs[0];
triangle.uvs[0] = temp2;
Vector4 temp3 = triangle.tangents[2];
triangle.tangents[2] = triangle.tangents[0];
triangle.tangents[0] = temp3;
}
}
// Functions
private static void Cut_this_Face(ref MeshMaker.Triangle triangle, int submesh)
{
// ブレードの表(左側)にあればtrue,違うならfalse
isLeftSides[0] = blade.GetSide(triangle.vertices[0]); // true = left
isLeftSides[1] = blade.GetSide(triangle.vertices[1]);
isLeftSides[2] = blade.GetSide(triangle.vertices[2]);
int leftCount = 0;
int rightCount = 0;
for (int i = 0; i < 3; i++)
{
// もし頂点が左側なら
if (isLeftSides[i])
{ // left
// 左側頂点リストに追加
_leftTriangleCache.vertices[leftCount] = triangle.vertices[i];
_leftTriangleCache.uvs[leftCount] = triangle.uvs[i];
_leftTriangleCache.normals[leftCount] = triangle.normals[i];
_leftTriangleCache.tangents[leftCount] = triangle.tangents[i];
// 左側頂点カウントを +1
leftCount++;
}
else // それ以外（頂点が右側）なら
{ // right
// 右側頂点リストに追加
_rightTriangleCache.vertices[rightCount] = triangle.vertices[i];
_rightTriangleCache.uvs[rightCount] = triangle.uvs[i];
_rightTriangleCache.normals[rightCount] = triangle.normals[i];
_rightTriangleCache.tangents[rightCount] = triangle.tangents[i];
// 右側頂点カウントを +1
rightCount++;
}
}
// find the new triangles X 3
// first the new vertices
// this will give me a triangle with the solo point as first
// 頂点の割合が1:2（左側が１）の時
// 左側の頂点を始点としたトライアングルを生成
if (leftCount == 1)
{
tmpTriangle.vertices[0] = _leftTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _leftTriangleCache.uvs[0];
tmpTriangle.normals[0] = _leftTriangleCache.normals[0];
tmpTriangle.tangents[0] = _leftTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _rightTriangleCache.vertices[0];
tmpTriangle.uvs[1] = _rightTriangleCache.uvs[0];
tmpTriangle.normals[1] = _rightTriangleCache.normals[0];
tmpTriangle.tangents[1] = _rightTriangleCache.tangents[0];
tmpTriangle.vertices[2] = _rightTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _rightTriangleCache.uvs[1];
tmpTriangle.normals[2] = _rightTriangleCache.normals[1];
tmpTriangle.tangents[2] = _rightTriangleCache.tangents[1];
}
else
{
// 頂点の割合が2:1（左側が2）の時
// 右側の頂点を始点としたトライアングルを生成
tmpTriangle.vertices[0] = _rightTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _rightTriangleCache.uvs[0];
tmpTriangle.normals[0] = _rightTriangleCache.normals[0];
tmpTriangle.tangents[0] = _rightTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _leftTriangleCache.vertices[0];
tmpTriangle.uvs[1] = _leftTriangleCache.uvs[0];
tmpTriangle.normals[1] = _leftTriangleCache.normals[0];
tmpTriangle.tangents[1] = _leftTriangleCache.tangents[0];
tmpTriangle.vertices[2] = _leftTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _leftTriangleCache.uvs[1];
tmpTriangle.normals[2] = _leftTriangleCache.normals[1];
tmpTriangle.tangents[2] = _leftTriangleCache.tangents[1];
}
// now to find the intersection points between the solo point and the others
// 1つ側の頂点から、残り2点までの間にあるブレードの交点を求める
float distance = 0;
float normalizedDistance = 0.0f;
Vector3 edgeVector = Vector3.zero; // contains edge length and direction
// 頂点０から頂点1までのベクトルをedgeVectorへ
edgeVector = tmpTriangle.vertices[1] - tmpTriangle.vertices[0];
// Raycast(頂点0からedgeVector（単位ベクトルへ変換）に向けて)レイを照射、距離を取得
blade.Raycast(new Ray(tmpTriangle.vertices[0], edgeVector.normalized), out distance);
// edgeVector.magunitude = ベクトルの距離
// normalizedDistance = ベクトルの距離の比（頂点0から頂点１までの距離を1とした時のブレードまでの距離）
normalizedDistance = distance / edgeVector.magnitude;
// lerp（点１,点2,割合）で、頂点0から頂点１までのベクトルをnormalizedDistanceの割合で作成する
_newTriangleCache.vertices[0] = Vector3.Lerp(tmpTriangle.vertices[0], tmpTriangle.vertices[1], normalizedDistance);
// ↑のuvバージョン
_newTriangleCache.uvs[0] = Vector2.Lerp(tmpTriangle.uvs[0], tmpTriangle.uvs[1], normalizedDistance);
// ↑の法線ベクトルバージョン
_newTriangleCache.normals[0] = Vector3.Lerp(tmpTriangle.normals[0], tmpTriangle.normals[1], normalizedDistance);
// ↑の接線ベクトルバージョン
_newTriangleCache.tangents[0] = Vector4.Lerp(tmpTriangle.tangents[0], tmpTriangle.tangents[1], normalizedDistance);
// さっきの処理を頂点0と頂点2で行う
edgeVector = tmpTriangle.vertices[2] - tmpTriangle.vertices[0];
blade.Raycast(new Ray(tmpTriangle.vertices[0], edgeVector.normalized), out distance);
normalizedDistance = distance / edgeVector.magnitude;
_newTriangleCache.vertices[1] = Vector3.Lerp(tmpTriangle.vertices[0], tmpTriangle.vertices[2], normalizedDistance);
_newTriangleCache.uvs[1] = Vector2.Lerp(tmpTriangle.uvs[0], tmpTriangle.uvs[2], normalizedDistance);
_newTriangleCache.normals[1] = Vector3.Lerp(tmpTriangle.normals[0], tmpTriangle.normals[2], normalizedDistance);
_newTriangleCache.tangents[1] = Vector4.Lerp(tmpTriangle.tangents[0], tmpTriangle.tangents[2], normalizedDistance);
// 新しく作った頂点がお互い異なるなら成功
if (_newTriangleCache.vertices[0] != _newTriangleCache.vertices[1])
{
//新しい頂点を新ポリゴンリストに追加
//tracking newly created points
newVertices.Add(_newTriangleCache.vertices[0]);
newVertices.Add(_newTriangleCache.vertices[1]);
}
// make the new triangles
// one side will get 1 the other will get 2
// 頂点の割合が1:2（左側が１）の時
if (leftCount == 1)
{
// first one on the left
// ブレードの左部分ポリゴン
tmpTriangle.vertices[0] = _leftTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _leftTriangleCache.uvs[0];
tmpTriangle.normals[0] = _leftTriangleCache.normals[0];
tmpTriangle.tangents[0] = _leftTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _newTriangleCache.vertices[0];
tmpTriangle.uvs[1] = _newTriangleCache.uvs[0];
tmpTriangle.normals[1] = _newTriangleCache.normals[0];
tmpTriangle.tangents[1] = _newTriangleCache.tangents[0];
tmpTriangle.vertices[2] = _newTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _newTriangleCache.uvs[1];
tmpTriangle.normals[2] = _newTriangleCache.normals[1];
tmpTriangle.tangents[2] = _newTriangleCache.tangents[1];
// check if it is facing the right way
// ポリゴンの表面が裏を向いていないかチェック
NormalCheck(ref tmpTriangle);
// add it
//ポリゴンを左側ポリゴンリストに追加
leftMeshMaker.AddTriangle(tmpTriangle, submesh);
// other two on the right
// 右側の4角形を3角形のポリゴン2つにする。
//一つ目
tmpTriangle.vertices[0] = _rightTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _rightTriangleCache.uvs[0];
tmpTriangle.normals[0] = _rightTriangleCache.normals[0];
tmpTriangle.tangents[0] = _rightTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _newTriangleCache.vertices[0];
tmpTriangle.uvs[1] = _newTriangleCache.uvs[0];
tmpTriangle.normals[1] = _newTriangleCache.normals[0];
tmpTriangle.tangents[1] = _newTriangleCache.tangents[0];
tmpTriangle.vertices[2] = _newTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _newTriangleCache.uvs[1];
tmpTriangle.normals[2] = _newTriangleCache.normals[1];
tmpTriangle.tangents[2] = _newTriangleCache.tangents[1];
// check if it is facing the right way
NormalCheck(ref tmpTriangle);
// add it
rightMeshMaker.AddTriangle(tmpTriangle, submesh);
// third
// 右側2つ目
tmpTriangle.vertices[0] = _rightTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _rightTriangleCache.uvs[0];
tmpTriangle.normals[0] = _rightTriangleCache.normals[0];
tmpTriangle.tangents[0] = _rightTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _rightTriangleCache.vertices[1];
tmpTriangle.uvs[1] = _rightTriangleCache.uvs[1];
tmpTriangle.normals[1] = _rightTriangleCache.normals[1];
tmpTriangle.tangents[1] = _rightTriangleCache.tangents[1];
tmpTriangle.vertices[2] = _newTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _newTriangleCache.uvs[1];
tmpTriangle.normals[2] = _newTriangleCache.normals[1];
tmpTriangle.tangents[2] = _newTriangleCache.tangents[1];
// check if it is facing the right way
NormalCheck(ref tmpTriangle);
// add it
rightMeshMaker.AddTriangle(tmpTriangle, submesh);
}
else //上の処理の左右逆パターン
{
// first one on the right
tmpTriangle.vertices[0] = _rightTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _rightTriangleCache.uvs[0];
tmpTriangle.normals[0] = _rightTriangleCache.normals[0];
tmpTriangle.tangents[0] = _rightTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _newTriangleCache.vertices[0];
tmpTriangle.uvs[1] = _newTriangleCache.uvs[0];
tmpTriangle.normals[1] = _newTriangleCache.normals[0];
tmpTriangle.tangents[1] = _newTriangleCache.tangents[0];
tmpTriangle.vertices[2] = _newTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _newTriangleCache.uvs[1];
tmpTriangle.normals[2] = _newTriangleCache.normals[1];
tmpTriangle.tangents[2] = _newTriangleCache.tangents[1];
// check if it is facing the right way
NormalCheck(ref tmpTriangle);
// add it
rightMeshMaker.AddTriangle(tmpTriangle, submesh);
// other two on the left
tmpTriangle.vertices[0] = _leftTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _leftTriangleCache.uvs[0];
tmpTriangle.normals[0] = _leftTriangleCache.normals[0];
tmpTriangle.tangents[0] = _leftTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _newTriangleCache.vertices[0];
tmpTriangle.uvs[1] = _newTriangleCache.uvs[0];
tmpTriangle.normals[1] = _newTriangleCache.normals[0];
tmpTriangle.tangents[1] = _newTriangleCache.tangents[0];
tmpTriangle.vertices[2] = _newTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _newTriangleCache.uvs[1];
tmpTriangle.normals[2] = _newTriangleCache.normals[1];
tmpTriangle.tangents[2] = _newTriangleCache.tangents[1];
// check if it is facing the right way
NormalCheck(ref tmpTriangle);
// add it
leftMeshMaker.AddTriangle(tmpTriangle, submesh);
// third
tmpTriangle.vertices[0] = _leftTriangleCache.vertices[0];
tmpTriangle.uvs[0] = _leftTriangleCache.uvs[0];
tmpTriangle.normals[0] = _leftTriangleCache.normals[0];
tmpTriangle.tangents[0] = _leftTriangleCache.tangents[0];
tmpTriangle.vertices[1] = _leftTriangleCache.vertices[1];
tmpTriangle.uvs[1] = _leftTriangleCache.uvs[1];
tmpTriangle.normals[1] = _leftTriangleCache.normals[1];
tmpTriangle.tangents[1] = _leftTriangleCache.tangents[1];
tmpTriangle.vertices[2] = _newTriangleCache.vertices[1];
tmpTriangle.uvs[2] = _newTriangleCache.uvs[1];
tmpTriangle.normals[2] = _newTriangleCache.normals[1];
tmpTriangle.tangents[2] = _newTriangleCache.tangents[1];
// check if it is facing the right way
NormalCheck(ref tmpTriangle);
// add it
leftMeshMaker.AddTriangle(tmpTriangle, submesh);
}
}
