// called by Button
public void ShapeIt()
{
if (segment_sourceMesh == null)
{
Debug.LogError("missing source mesh");
return;
}
_helpTransform1 = new GameObject("_helpTransform1").transform;
_helpTransform2 = new GameObject("_helpTransform2").transform;
// because it messes it up
Quaternion oldRotation = transform.rotation;
transform.rotation = Quaternion.identity;
_maker = new Mesh_Maker();
ScanSourceMesh();
Craft(); // make segments
Apply(); // apply values
transform.rotation = oldRotation;
DestroyImmediate(_helpTransform1.gameObject);
DestroyImmediate(_helpTransform2.gameObject);
}
/// <summary>
/// You can call this during runtime and in the editor
/// </summary>
public void ShapeIt()
{
//====================！！！segmentSourceMesh 如何被初始化？
//----------------可能因为添加[RequireComponent(typeof(MeshFilter))]组件，MeshFilter中有mesh变量
if (segmentSourceMesh == null)
{//segmentSourceMesh 没有添加源报错：缺失
Debug.LogError("missing source mesh");
return;
}
_helpTransform1 = new GameObject("_helpTransform1").transform; //新建游戏对象1
_helpTransform2 = new GameObject("_helpTransform2").transform; //新建游戏对象2
// because it messes it up
//Quaternion是四元数 用Quaternion来存储和表示对象的旋转角度
//====================！！！ transform 谁的转换坐标？为什么将旋转角值初始值？
//--------------猜想可能是调用本方法的gameObject,的transform
Quaternion oldRotation = transform.rotation;//旧的旋转
transform.rotation = Quaternion.identity;
//Quaternion.identity就是指Quaternion(0,0,0,0),就是没旋转前的初始角度,是一个确切的值,而transform.rotation是指本物体的角度,值是不确定的,比如可以这么设置transform.rotation = Quaternion.identity;
// 生成新对象时覆盖之前的Mesh_Maker
// 新生成两个GameObject 获取他们的transform，以及将原有对象的transform的rotation 设为初始角度=================对下面处理有何影响？？？？？
_maker = new Mesh_Maker();
//获取所有顶点的min_z，max_z，赋值_segment_length
ScanSourceMesh();
Craft(); // make segments
//1.需要清除相同顶点则清除;2.将新生成的mesh，赋给当前GameObject
Apply(); // apply values
transform.rotation = oldRotation;
//g_1.GetComponent<Renderer>().marterial = Dl_COLOR;
//清除之前申请的两个gameObject 对象
// #if UNITY_EDITOR unity 代码运行平台判断代码，类似的有UNITY_IPHONE，UNITY_ANDROID
#if UNITY_EDITOR
if (!Application.isPlaying)
{
//程序运行异步销毁 程序停止，立即销毁
//DestroyImmediate是立即销毁，立即释放资源，做这个操作的时候，会消耗很多时间的，影响主线程运行
//Destroy是异步销毁，一般在下一帧就销毁了，不会影响主线程的运行。
DestroyImmediate(_helpTransform1.gameObject);
DestroyImmediate(_helpTransform2.gameObject);
}
else
{
//程序运行，正常销毁
Destroy(_helpTransform1.gameObject);
Destroy(_helpTransform2.gameObject);
}
#else
Destroy(_helpTransform1.gameObject);
Destroy(_helpTransform2.gameObject);
#endif
}
/// <summary>
/// Cut the specified victim
/// </summary>
public static GameObject[] Cut(GameObject victim, Vector3 anchorPoint, Vector3 normalDirection, Material capMaterial)
{
// set the blade relative to victim
_blade = new Plane(victim.transform.InverseTransformDirection(-normalDirection),
victim.transform.InverseTransformPoint(anchorPoint));
// get the victims mesh
_victim_mesh = victim.GetComponent <MeshFilter>().mesh;
// reset values
_new_vertices.Clear();
_leftSide = new Mesh_Maker();
_rightSide = new Mesh_Maker();
bool[] sides = new bool[3];
int[] indices;
int p1, p2, p3;
// go throught the submeshes
for (int sub = 0; sub < _victim_mesh.subMeshCount; sub++)
{
indices = _victim_mesh.GetTriangles(sub);
for (int i = 0; i < indices.Length; i += 3)
{
p1 = indices[i];
p2 = indices[i + 1];
p3 = indices[i + 2];
sides[0] = _blade.GetSide(_victim_mesh.vertices[p1]);
sides[1] = _blade.GetSide(_victim_mesh.vertices[p2]);
sides[2] = _blade.GetSide(_victim_mesh.vertices[p3]);
// whole triangle
if (sides[0] == sides[1] && sides[0] == sides[2])
{
if (sides[0]) // left side
{
_leftSide.AddTriangle(
new Vector3[] { _victim_mesh.vertices[p1], _victim_mesh.vertices[p2], _victim_mesh.vertices[p3] },
new Vector3[] { _victim_mesh.normals[p1], _victim_mesh.normals[p2], _victim_mesh.normals[p3] },
new Vector2[] { _victim_mesh.uv[p1], _victim_mesh.uv[p2], _victim_mesh.uv[p3] },
new Vector4[] { _victim_mesh.tangents[p1], _victim_mesh.tangents[p2], _victim_mesh.tangents[p3] },
sub);
}
else
{
_rightSide.AddTriangle(
new Vector3[] { _victim_mesh.vertices[p1], _victim_mesh.vertices[p2], _victim_mesh.vertices[p3] },
new Vector3[] { _victim_mesh.normals[p1], _victim_mesh.normals[p2], _victim_mesh.normals[p3] },
new Vector2[] { _victim_mesh.uv[p1], _victim_mesh.uv[p2], _victim_mesh.uv[p3] },
new Vector4[] { _victim_mesh.tangents[p1], _victim_mesh.tangents[p2], _victim_mesh.tangents[p3] },
sub);
}
}
else // cut the triangle
{
Cut_this_Face(
new Vector3[] { _victim_mesh.vertices[p1], _victim_mesh.vertices[p2], _victim_mesh.vertices[p3] },
new Vector3[] { _victim_mesh.normals[p1], _victim_mesh.normals[p2], _victim_mesh.normals[p3] },
new Vector2[] { _victim_mesh.uv[p1], _victim_mesh.uv[p2], _victim_mesh.uv[p3] },
new Vector4[] { _victim_mesh.tangents[p1], _victim_mesh.tangents[p2], _victim_mesh.tangents[p3] },
sub);
}
}
}
// The capping Material will be at the end
Material[] mats = victim.GetComponent <MeshRenderer>().sharedMaterials;
if (mats[mats.Length - 1].name != capMaterial.name)
{
Material[] newMats = new Material[mats.Length + 1];
mats.CopyTo(newMats, 0);
newMats[mats.Length] = capMaterial;
mats = newMats;
}
_capMatSub = mats.Length - 1; // for later use
// cap the opennings
Capping();
// Left Mesh
Mesh left_HalfMesh = _leftSide.GetMesh();
left_HalfMesh.name = "Split Mesh Left";
// Right Mesh
Mesh right_HalfMesh = _rightSide.GetMesh();
right_HalfMesh.name = "Split Mesh Right";
// assign the game objects
victim.name = "left side";
victim.GetComponent <MeshFilter>().mesh = left_HalfMesh;
GameObject leftSideObj = victim;
GameObject rightSideObj = new GameObject("right side", typeof(MeshFilter), typeof(MeshRenderer));
rightSideObj.transform.position = victim.transform.position;
rightSideObj.transform.rotation = victim.transform.rotation;
rightSideObj.GetComponent <MeshFilter>().mesh = right_HalfMesh;
// assign mats
leftSideObj.GetComponent <MeshRenderer>().materials = mats;
rightSideObj.GetComponent <MeshRenderer>().materials = mats;
return(new GameObject[] { leftSideObj, rightSideObj });
}
public void Button_MakeIt()
{
Mesh _mesh = GetComponent <MeshFilter>().sharedMesh;
MeshRenderer _renderer = GetComponent <MeshRenderer>();
Mesh[] _made_meshes = new Mesh[_mesh.subMeshCount];
// go through the sub indices
for (int sub = 0; sub < _mesh.subMeshCount; sub++)
{
Mesh_Maker maker = new Mesh_Maker();
int[] trinagles = _mesh.GetTriangles(sub);
// go through the triangles
for (int i = 0; i < trinagles.Length; i += 3)
{
maker.AddTriangle(new Vector3[] {
_mesh.vertices[trinagles[i]], _mesh.vertices[trinagles[i + 1]], _mesh.vertices[trinagles[i + 2]]
}, new Vector2[] {
_mesh.uv[trinagles[i]], _mesh.uv[trinagles[i + 1]], _mesh.uv[trinagles[i + 2]]
}, new Vector3[] {
_mesh.normals[trinagles[i]], _mesh.normals[trinagles[i + 1]], _mesh.normals[trinagles[i + 2]]
}, 0);
}
maker.RemoveDoubles();
_made_meshes[sub] = maker.GetMesh();
}
// too many
while (transform.childCount > _mesh.subMeshCount)
{
Transform obj = transform.GetChild(transform.childCount - 1);
obj.parent = null;
DestroyImmediate(obj.gameObject);
}
// too little
while (transform.childCount < _mesh.subMeshCount)
{
Transform obj = new GameObject("child").transform;
obj.SetParent(transform);
obj.localPosition = Vector3.zero;
obj.localRotation = Quaternion.identity;
obj.gameObject.AddComponent <MeshCollider>();
}
for (int i = 0; i < transform.childCount; i++)
{
Transform obj = transform.GetChild(i);
obj.gameObject.name = _renderer.sharedMaterials[i].name;
_made_meshes[i].name = obj.gameObject.name;
obj.GetComponent <MeshCollider>().sharedMesh = _made_meshes[i];
}
}
/// <summary>
/// Cut the specified victim
/// </summary>
public static GameObject[] Cut(GameObject victim, Vector3 anchorPoint, Vector3 normalDirection, Material capMaterial)
{
// set the blade relative to victim
_blade = new Plane(victim.transform.InverseTransformDirection(-normalDirection),
victim.transform.InverseTransformPoint(anchorPoint));
// get the victims mesh
_victim_mesh = victim.GetComponent <MeshFilter>().mesh;
// reset values
_new_vertices.Clear();
_leftSide = new Mesh_Maker();
_rightSide = new Mesh_Maker();
bool[] sides = new bool[3];
int[] indices;
int p1, p2, p3;
// go throught the submeshes
for (int sub = 0; sub < _victim_mesh.subMeshCount; sub++)
{
indices = _victim_mesh.GetTriangles(sub);
for (int i = 0; i < indices.Length; i += 3)
{
p1 = indices[i];
p2 = indices[i + 1];
p3 = indices[i + 2];
sides[0] = _blade.GetSide(_victim_mesh.vertices[p1]);
sides[1] = _blade.GetSide(_victim_mesh.vertices[p2]);
sides[2] = _blade.GetSide(_victim_mesh.vertices[p3]);
// whole triangle
if (sides[0] == sides[1] && sides[0] == sides[2])
{
if (sides[0])
{ // left side
_leftSide.AddTriangle(
new Vector3[] { _victim_mesh.vertices[p1], _victim_mesh.vertices[p2], _victim_mesh.vertices[p3] },
new Vector3[] { _victim_mesh.normals[p1], _victim_mesh.normals[p2], _victim_mesh.normals[p3] },
new Vector2[] { _victim_mesh.uv[p1], _victim_mesh.uv[p2], _victim_mesh.uv[p3] },
new Vector4[] { _victim_mesh.tangents[p1], _victim_mesh.tangents[p2], _victim_mesh.tangents[p3] },
sub);
}
else
{
_rightSide.AddTriangle(
new Vector3[] { _victim_mesh.vertices[p1], _victim_mesh.vertices[p2], _victim_mesh.vertices[p3] },
new Vector3[] { _victim_mesh.normals[p1], _victim_mesh.normals[p2], _victim_mesh.normals[p3] },
new Vector2[] { _victim_mesh.uv[p1], _victim_mesh.uv[p2], _victim_mesh.uv[p3] },
new Vector4[] { _victim_mesh.tangents[p1], _victim_mesh.tangents[p2], _victim_mesh.tangents[p3] },
sub);
}
}
else
{ // cut the triangle
Cut_this_Face(
new Vector3[] { _victim_mesh.vertices[p1], _victim_mesh.vertices[p2], _victim_mesh.vertices[p3] },
new Vector3[] { _victim_mesh.normals[p1], _victim_mesh.normals[p2], _victim_mesh.normals[p3] },
new Vector2[] { _victim_mesh.uv[p1], _victim_mesh.uv[p2], _victim_mesh.uv[p3] },
new Vector4[] { _victim_mesh.tangents[p1], _victim_mesh.tangents[p2], _victim_mesh.tangents[p3] },
sub);
}
}
}
// The capping Material will be at the end
Material[] mats = victim.GetComponent <MeshRenderer>().sharedMaterials;
if (mats[mats.Length - 1].name != capMaterial.name)
{
Material[] newMats = new Material[mats.Length + 1];
mats.CopyTo(newMats, 0);
newMats[mats.Length] = capMaterial;
mats = newMats;
}
_capMatSub = mats.Length - 1; // for later use
// cap the opennings
Capping();
// Left Mesh
Mesh left_HalfMesh = _leftSide.GetMesh();
left_HalfMesh.name = "Split Mesh Left";
// Right Mesh
Mesh right_HalfMesh = _rightSide.GetMesh();
right_HalfMesh.name = "Split Mesh Right";
// assign the game objects
//victim.name = "left side";
//victim.GetComponent<MeshFilter>().mesh = left_HalfMesh;
//GameObject leftSideObj = victim;
//se di default vi è uno dei seguenti collider, li distruggo
// Destroy(leftSideObj.GetComponent<BoxCollider>());
//Destroy(leftSideObj.GetComponent<SphereCollider>());
//Destroy(leftSideObj.GetComponent<CapsuleCollider>());
//ogni volta che taglio la parte sinistra distruggo il vecchio MeshCollider (mesh dell'oggetto intero originale)
//Destroy(leftSideObj.GetComponent<MeshCollider>());
//e riassegno il nuovo MeshCollider adattato perfettamente alla dimensione del nuovo frammento tagliato
//leftSideObj.AddComponent<MeshCollider>();
GameObject leftSideObj = new GameObject("left side", typeof(MeshFilter), typeof(MeshRenderer));
leftSideObj.transform.position = victim.transform.position;
leftSideObj.transform.rotation = victim.transform.rotation;
leftSideObj.GetComponent <MeshFilter>().mesh = left_HalfMesh;
if (victim.transform.parent != null)
{
leftSideObj.transform.parent = victim.transform.parent;
}
GameObject rightSideObj = new GameObject("right side", typeof(MeshFilter), typeof(MeshRenderer));
rightSideObj.transform.position = victim.transform.position;
rightSideObj.transform.rotation = victim.transform.rotation;
rightSideObj.GetComponent <MeshFilter>().mesh = right_HalfMesh;
if (victim.transform.parent != null)
{
rightSideObj.transform.parent = victim.transform.parent;
}
// in questo modo aggiungo un mesh collider anche all'oggetto rightSide ottenuto dal taglio in modo che possa anche lui esser tagliato a sua volta.
leftSideObj.AddComponent <MeshCollider>();
rightSideObj.AddComponent <MeshCollider>();
rightSideObj.transform.localScale = victim.transform.localScale;
leftSideObj.transform.localScale = victim.transform.localScale;
// assign mats
leftSideObj.GetComponent <MeshRenderer>().materials = mats;
rightSideObj.GetComponent <MeshRenderer>().materials = mats;
//NB: per implementare le funzionalità per utilizzare LeapMotion:
//***************************************************************
//leftSide
leftSideObj.AddComponent <InteractionBehaviour>();
leftSideObj.GetComponent <MeshCollider>().convex = true; //L'interazione con i mesh collider richiede che sia Convex
if (!leftSideObj.GetComponent <Rigidbody>())
{
leftSideObj.AddComponent <Rigidbody>();
}
leftSideObj.GetComponent <Rigidbody>().useGravity = false;
leftSideObj.GetComponent <Rigidbody>().isKinematic = true; //non viene scaraventato via al contatto.
//rightSide
rightSideObj.AddComponent <InteractionBehaviour>();
rightSideObj.GetComponent <MeshCollider>().convex = true; //L'interazione con i mesh collider richiede che sia Convex
if (!rightSideObj.GetComponent <Rigidbody>())
{
rightSideObj.AddComponent <Rigidbody>();
}
rightSideObj.GetComponent <Rigidbody>().useGravity = false;
rightSideObj.GetComponent <Rigidbody>().isKinematic = true; //non viene scaraventato via al contatto.
//***************************************************************
return(new GameObject[] { leftSideObj, rightSideObj });
}
public static IEnumerator Cut(GameObject victim, Vector3 anchorPoint, Vector3 normalDirection, Material capMaterial, System.Action <GameObject[]> callback)
{
// set the blade relative to victim
_blade = new Plane(victim.transform.InverseTransformDirection(-normalDirection),
victim.transform.InverseTransformPoint(anchorPoint));
// get the victims mesh
_victim_mesh = victim.GetComponent <MeshFilter>().mesh;
// reset values
_new_vertices.Clear();
_leftSide = new Mesh_Maker();
_rightSide = new Mesh_Maker();
var sides = new bool[3];
var victimVerticesArr = _victim_mesh.vertices;
var victimNormalsArr = _victim_mesh.normals;
var victimUVArr = _victim_mesh.uv;
var victimTangentsArr = _victim_mesh.tangents;
int p1 = 0;
int p2 = 0;
int p3 = 0;
// go through the submeshes
for (var sub = 0; sub < _victim_mesh.subMeshCount; ++sub)
{
indices = _victim_mesh.GetTriangles(sub);
for (var i = 0; i < indices.Length; i += 3)
{
if (i % 7500 == 0)
{
yield return(null);
}
p1 = indices[i];
p2 = indices[i + 1];
p3 = indices[i + 2];
sides[0] = _blade.GetSide(victimVerticesArr[p1]);
sides[1] = _blade.GetSide(victimVerticesArr[p2]);
sides[2] = _blade.GetSide(victimVerticesArr[p3]);
// whole triangle
if (sides[0] == sides[1] && sides[0] == sides[2])
{
if (sides[0])
{
// left side
_leftSide.AddTriangle(
new[] { victimVerticesArr[p1], victimVerticesArr[p2], victimVerticesArr[p3] },
new[] { victimNormalsArr[p1], victimNormalsArr[p2], victimNormalsArr[p3] },
new[] { victimUVArr[p1], victimUVArr[p2], victimUVArr[p3] },
new[] { victimTangentsArr[p1], victimTangentsArr[p2], victimTangentsArr[p3] },
sub);
}
else
{
// right side
_rightSide.AddTriangle(
new[] { victimVerticesArr[p1], victimVerticesArr[p2], victimVerticesArr[p3] },
new[] { victimNormalsArr[p1], victimNormalsArr[p2], victimNormalsArr[p3] },
new[] { victimUVArr[p1], victimUVArr[p2], victimUVArr[p3] },
new[] { victimTangentsArr[p1], victimTangentsArr[p2], victimTangentsArr[p3] },
sub);
}
}
else
{
// cut the triangle
Cut_this_Face(
new[] { victimVerticesArr[p1], victimVerticesArr[p2], victimVerticesArr[p3] },
new[] { victimNormalsArr[p1], victimNormalsArr[p2], victimNormalsArr[p3] },
new[] { victimUVArr[p1], victimUVArr[p2], victimUVArr[p3] },
new[] { victimTangentsArr[p1], victimTangentsArr[p2], victimTangentsArr[p3] },
sub);
}
}
yield return(null);
}
indices = null;
// The capping Material will be at the end
var mats = victim.GetComponent <MeshRenderer>().sharedMaterials;
if (mats[mats.Length - 1].name != capMaterial.name)
{
var newMats = new Material[mats.Length + 1];
mats.CopyTo(newMats, 0);
newMats[mats.Length] = capMaterial;
mats = newMats;
}
_capMatSub = mats.Length - 1; // for later use
// cap the opennings
Capping();
// Left Mesh
var left_HalfMesh = _leftSide.GetMesh();
left_HalfMesh.name = "Split Mesh Left";
// Right Mesh
var right_HalfMesh = _rightSide.GetMesh();
right_HalfMesh.name = "Split Mesh Right";
// assign the game objects
victim.name = "left side";
victim.GetComponent <MeshFilter>().mesh = left_HalfMesh;
var leftSideObj = victim;
var rightSideObj = new GameObject("right side", typeof(MeshFilter), typeof(MeshRenderer));
rightSideObj.transform.position = victim.transform.position;
rightSideObj.transform.rotation = victim.transform.rotation;
rightSideObj.GetComponent <MeshFilter>().mesh = right_HalfMesh;
// assign mats
leftSideObj.GetComponent <MeshRenderer>().materials = mats;
rightSideObj.GetComponent <MeshRenderer>().materials = mats;
callback(new [] { leftSideObj, rightSideObj });
}