// Use this for initialization
void Start()
{
TriMesh = new TriangleNet.Mesh();
/*_mesh.Triangulate("Assets/Plugins/Data/superior.poly");*/
var geometry = FileReader.ReadPolyFile("Assets/Plugins/Data/superior.poly");
TriMesh.behavior.Quality = true;
TriMesh.behavior.MinAngle = 33.8f;
TriMesh.Triangulate(geometry);
//TriMesh.Refine(true);
// Get mesh statistics.
var statistic = new Statistic();
statistic.Update(TriMesh, 1);
// Refine by setting a custom maximum area constraint.
TriMesh.Refine(statistic.LargestArea / 4);
TriMesh.Smooth();
Debug.Log(string.Format("width {0:0.00}, height {1:0.00}; min {2:0.00}, {3:0.00}; max {4:0.00}, {5:0.00}",
TriMesh.Bounds.Width, TriMesh.Bounds.Height,
TriMesh.Bounds.Xmin, TriMesh.Bounds.Ymin,
TriMesh.Bounds.Xmax, TriMesh.Bounds.Ymax));
OnRender(TriMesh);
}
public static void Tessellate(List <Vector2> vertices, List <IndexedEdge> indexedEdges, List <Hole> holes, List <int> indices, float tessellationAmount)
{
if (tessellationAmount <= 0f)
{
return;
}
indices.Clear();
if (vertices.Count >= 3)
{
InputGeometry inputGeometry = new InputGeometry(vertices.Count);
for (int i = 0; i < vertices.Count; ++i)
{
Vector2 vertex = vertices[i];
inputGeometry.AddPoint(vertex.x, vertex.y);
}
for (int i = 0; i < indexedEdges.Count; ++i)
{
IndexedEdge edge = indexedEdges[i];
inputGeometry.AddSegment(edge.index1, edge.index2);
}
for (int i = 0; i < holes.Count; ++i)
{
Vector2 hole = holes[i].vertex;
inputGeometry.AddHole(hole.x, hole.y);
}
TriangleNet.Mesh triangleMesh = new TriangleNet.Mesh();
TriangleNet.Tools.Statistic statistic = new TriangleNet.Tools.Statistic();
triangleMesh.Triangulate(inputGeometry);
triangleMesh.Behavior.MinAngle = 20.0;
triangleMesh.Behavior.SteinerPoints = -1;
triangleMesh.Refine(true);
statistic.Update(triangleMesh, 1);
triangleMesh.Refine(statistic.LargestArea / tessellationAmount);
triangleMesh.Renumber();
vertices.Clear();
indexedEdges.Clear();
foreach (TriangleNet.Data.Vertex vertex in triangleMesh.Vertices)
{
vertices.Add(new Vector2((float)vertex.X, (float)vertex.Y));
}
foreach (TriangleNet.Data.Segment segment in triangleMesh.Segments)
{
indexedEdges.Add(new IndexedEdge(segment.P0, segment.P1));
}
foreach (TriangleNet.Data.Triangle triangle in triangleMesh.Triangles)
{
if (triangle.P0 >= 0 && triangle.P0 < vertices.Count &&
triangle.P0 >= 0 && triangle.P1 < vertices.Count &&
triangle.P0 >= 0 && triangle.P2 < vertices.Count)
{
indices.Add(triangle.P0);
indices.Add(triangle.P2);
indices.Add(triangle.P1);
}
}
}
}
public void CreateSubdividedMesh(Vector2[] vertsToCopy, Transform transform, int smoothLevel)
{
Sprite spr = transform.GetComponent <SpriteRenderer>().sprite;
Rect rec = spr.rect;
Vector3 bound = transform.renderer.bounds.max - transform.renderer.bounds.min;
TextureImporter textureImporter = AssetImporter.GetAtPath(AssetDatabase.GetAssetPath(spr)) as TextureImporter;
//Create triangle.NET geometry
TriangleNet.Geometry.InputGeometry geometry = new TriangleNet.Geometry.InputGeometry(vertsToCopy.Length);
//Add vertices
foreach (Vector2 p in vertsToCopy)
{
geometry.AddPoint(p.x, p.y);
}
//Add segments
for (int i = 0; i < vertsToCopy.Length - 1; i++)
{
geometry.AddSegment(i, i + 1);
}
geometry.AddSegment(vertsToCopy.Length - 1, 0);
//Triangulate, refine and smooth
TriangleNet.Mesh triangleNetMesh = new TriangleNet.Mesh();
triangleNetMesh.behavior.MinAngle = 10;
triangleNetMesh.Triangulate(geometry);
if (smoothLevel > 1)
{
triangleNetMesh.Refine(true);
}
TriangleNet.Tools.Statistic statistic = new TriangleNet.Tools.Statistic();
statistic.Update(triangleNetMesh, 1);
// Refine by setting a custom maximum area constraint.
if (smoothLevel > 2)
{
triangleNetMesh.Refine(statistic.LargestArea / 8);
}
try
{
triangleNetMesh.Smooth();
}
catch
{
//Debug.LogWarning("unable to smooth");
}
triangleNetMesh.Renumber();
//transform vertices
Vector3[] vertices = new Vector3[triangleNetMesh.Vertices.Count];
Vector2[] uvs = new Vector2[triangleNetMesh.Vertices.Count];
Vector3[] normals = new Vector3[triangleNetMesh.Vertices.Count];
int idx = 0;
foreach (TriangleNet.Data.Vertex v in triangleNetMesh.Vertices)
{
vertices[idx] = new Vector3((float)v.X, (float)v.Y, 0);
normals[idx] = new Vector3(0, 0, -1);
Vector2 newUv = new Vector2(((float)v.X / bound.x) + 0.5f, ((float)v.Y / bound.y) + 0.5f);
newUv.x *= rec.width / spr.texture.width;
newUv.y *= rec.height / spr.texture.height;
//Debug.Log(spr.textureRectOffset);
newUv.x += (rec.x) / spr.texture.width;
newUv.y += (rec.y) / spr.texture.height;
SpriteMetaData[] smdArray = textureImporter.spritesheet;
Vector2 pivot = new Vector2(.0f, .0f);;
for (int i = 0; i < smdArray.Length; i++)
{
if (smdArray[i].name == spr.name)
{
switch (smdArray[i].alignment)
{
case (0):
smdArray[i].pivot = Vector2.zero;
break;
case (1):
smdArray[i].pivot = new Vector2(0f, 1f) - new Vector2(.5f, .5f);
break;
case (2):
smdArray[i].pivot = new Vector2(0.5f, 1f) - new Vector2(.5f, .5f);
break;
case (3):
smdArray[i].pivot = new Vector2(1f, 1f) - new Vector2(.5f, .5f);
break;
case (4):
smdArray[i].pivot = new Vector2(0f, .5f) - new Vector2(.5f, .5f);
break;
case (5):
smdArray[i].pivot = new Vector2(1f, .5f) - new Vector2(.5f, .5f);
break;
case (6):
smdArray[i].pivot = new Vector2(0f, 0f) - new Vector2(.5f, .5f);
break;
case (7):
smdArray[i].pivot = new Vector2(0.5f, 0f) - new Vector2(.5f, .5f);
break;
case (8):
smdArray[i].pivot = new Vector2(1f, 0f) - new Vector2(.5f, .5f);
break;
case (9):
smdArray[i].pivot -= new Vector2(.5f, .5f);
break;
}
pivot = smdArray[i].pivot;
}
}
if (textureImporter.spriteImportMode == SpriteImportMode.Single)
{
pivot = textureImporter.spritePivot - new Vector2(.5f, .5f);
}
newUv.x += ((pivot.x) * rec.width) / spr.texture.width;
newUv.y += ((pivot.y) * rec.height) / spr.texture.height;
uvs[idx] = newUv;
idx++;
}
//transform triangles
int[] triangles = new int[triangleNetMesh.Triangles.Count * 3];
idx = 0;
foreach (TriangleNet.Data.Triangle t in triangleNetMesh.Triangles)
{
triangles[idx++] = t.P1;
triangles[idx++] = t.P0;
triangles[idx++] = t.P2;
}
finalVertices = vertices;
finalTriangles = triangles;
finalUvs = uvs;
finalNormals = normals;
}
public static void Tessellate(List<Vector2> vertices, List<IndexedEdge> indexedEdges, List<Hole> holes, List<int> indices, float tessellationAmount)
{
if(tessellationAmount <= 0f)
{
return;
}
indices.Clear();
if(vertices.Count >= 3)
{
InputGeometry inputGeometry = new InputGeometry(vertices.Count);
for(int i = 0; i < vertices.Count; ++i)
{
Vector2 vertex = vertices[i];
inputGeometry.AddPoint(vertex.x,vertex.y);
}
for(int i = 0; i < indexedEdges.Count; ++i)
{
IndexedEdge edge = indexedEdges[i];
inputGeometry.AddSegment(edge.index1,edge.index2);
}
for(int i = 0; i < holes.Count; ++i)
{
Vector2 hole = holes[i].vertex;
inputGeometry.AddHole(hole.x,hole.y);
}
TriangleNet.Mesh triangleMesh = new TriangleNet.Mesh();
TriangleNet.Tools.Statistic statistic = new TriangleNet.Tools.Statistic();
triangleMesh.Triangulate(inputGeometry);
triangleMesh.Behavior.MinAngle = 20.0;
triangleMesh.Behavior.SteinerPoints = -1;
triangleMesh.Refine(true);
statistic.Update(triangleMesh,1);
triangleMesh.Refine(statistic.LargestArea / tessellationAmount);
triangleMesh.Renumber();
vertices.Clear();
indexedEdges.Clear();
foreach(TriangleNet.Data.Vertex vertex in triangleMesh.Vertices)
{
vertices.Add(new Vector2((float)vertex.X,(float)vertex.Y));
}
foreach(TriangleNet.Data.Segment segment in triangleMesh.Segments)
{
indexedEdges.Add(new IndexedEdge(segment.P0,segment.P1));
}
foreach (TriangleNet.Data.Triangle triangle in triangleMesh.Triangles)
{
if(triangle.P0 >= 0 && triangle.P0 < vertices.Count &&
triangle.P0 >= 0 && triangle.P1 < vertices.Count &&
triangle.P0 >= 0 && triangle.P2 < vertices.Count)
{
indices.Add(triangle.P0);
indices.Add(triangle.P2);
indices.Add(triangle.P1);
}
}
}
}
public void SubdivideMesh(int divisions)
{
if (spriteRenderer != null && points.Length > 2)
{
// Unparent the skin temporarily before adding the mesh
Transform polygonParent = spriteRenderer.transform.parent;
spriteRenderer.transform.parent = null;
// Reset the rotation before creating the mesh so the UV's will align properly
Quaternion localRotation = spriteRenderer.transform.localRotation;
spriteRenderer.transform.localRotation = Quaternion.identity;
// Reset the scale before creating the mesh so the UV's will align properly
Vector3 localScale = spriteRenderer.transform.localScale;
spriteRenderer.transform.localScale = Vector3.one;
//Create triangle.NET geometry
TriangleNet.Geometry.InputGeometry geometry = new TriangleNet.Geometry.InputGeometry(points.Length);
//Add vertices
foreach (Vector2 point in points)
{
geometry.AddPoint(point.x, point.y);
}
int N = geometry.Count;
int end = 0;
//Add vertices
foreach (Vector2 point in points)
{
geometry.AddPoint(point.x, point.y);
end++;
}
for (int i = 0; i < end; i++)
{
geometry.AddSegment(N + i, N + ((i + 1) % end));
}
//Triangulate and subdivide the mesh
TriangleNet.Mesh triangleMesh = new TriangleNet.Mesh();
if (divisions > 0)
{
triangleMesh.behavior.MinAngle = 10;
}
triangleMesh.Triangulate(geometry);
if (divisions > 0)
{
if (divisions > 1)
{
triangleMesh.Refine(true);
}
TriangleNet.Tools.Statistic stat = new TriangleNet.Tools.Statistic();
stat.Update(triangleMesh, 1);
// Refine by area
if (divisions > 2)
{
triangleMesh.Refine(stat.LargestArea / 8);
}
try {
triangleMesh.Smooth();
} catch {
//Debug.Log("Cannot subdivide");
}
triangleMesh.Renumber();
}
//transform vertices
points = new Vector2[triangleMesh.Vertices.Count];
Vector3[] vertices = new Vector3[triangleMesh.Vertices.Count];
Vector2[] uvs = new Vector2[triangleMesh.Vertices.Count];
Vector3[] normals = new Vector3[triangleMesh.Vertices.Count];
int n = 0;
foreach (TriangleNet.Data.Vertex v in triangleMesh.Vertices)
{
points[n] = new Vector2((float)v.X, (float)v.Y);
vertices[n] = new Vector3((float)v.X, (float)v.Y, 0);
normals[n] = new Vector3(0, 0, -1);
n++;
}
//transform triangles
int[] triangles = new int[triangleMesh.Triangles.Count * 3];
n = 0;
foreach (TriangleNet.Data.Triangle t in triangleMesh.Triangles)
{
triangles[n++] = t.P1;
triangles[n++] = t.P0;
triangles[n++] = t.P2;
}
mesh.Clear();
mesh = new Mesh();
mesh.vertices = vertices;
mesh.triangles = triangles;
mesh.uv = genUV(mesh.vertices);
mesh.normals = normals;
mesh.RecalculateNormals();
mesh.RecalculateBounds();
// Reset the rotations of the object
spriteRenderer.transform.localRotation = localRotation;
spriteRenderer.transform.localScale = localScale;
spriteRenderer.transform.parent = polygonParent;
meshCreated = true;
}
}
