/// <summary>
/// Crear triangulo.
/// Calcula su plano
/// </summary>
public Triangle(TGCVector3 a, TGCVector3 b, TGCVector3 c, TgcBoundingSphere sphere)
{
A = a;
B = b;
C = c;
Plane = TGCPlane.FromPoints(a, b, c);
BoundingSphere = sphere;
}
/// <summary>
/// Crear triangulo.
/// Calcula su plano y BoundingSphere
/// </summary>
public Triangle(TGCVector3 a, TGCVector3 b, TGCVector3 c)
{
A = a;
B = b;
C = c;
Plane = TGCPlane.FromPoints(a, b, c);
BoundingSphere = TgcBoundingSphere.computeFromPoints(new[] { a, b, c }).toClass();
}
/// <summary>
/// Tomar un mesh cargar todas las estructuras internas necesarias para poder editarlo
/// </summary>
private void loadMesh(TgcMesh origMesh)
{
//Obtener vertices del mesh
mesh = origMesh;
mesh.AutoTransformEnable = true;
var origVertices = getMeshOriginalVertexData(origMesh);
var origTriCount = origVertices.Count / 3;
//Iterar sobre los triangulos y generar data auxiliar unificada
Vertices = new List <EditPolyVertex>();
Edges = new List <EditPolyEdge>();
Polygons = new List <EditPolyPolygon>();
IndexBuffer = new short[origTriCount * 3];
var attributeBuffer = origMesh.D3dMesh.LockAttributeBufferArray(LockFlags.ReadOnly);
origMesh.D3dMesh.UnlockAttributeBuffer(attributeBuffer);
for (var i = 0; i < origTriCount; i++)
{
var v1 = origVertices[i * 3];
var v2 = origVertices[i * 3 + 1];
var v3 = origVertices[i * 3 + 2];
//Agregar vertices a la lista, si es que son nuevos
var v1Idx = EditablePolyUtils.addVertexToListIfUnique(Vertices, v1);
var v2Idx = EditablePolyUtils.addVertexToListIfUnique(Vertices, v2);
var v3Idx = EditablePolyUtils.addVertexToListIfUnique(Vertices, v3);
v1 = Vertices[v1Idx];
v2 = Vertices[v2Idx];
v3 = Vertices[v3Idx];
//Crear edges
var e1 = new EditPolyEdge();
e1.a = v1;
e1.b = v2;
var e2 = new EditPolyEdge();
e2.a = v2;
e2.b = v3;
var e3 = new EditPolyEdge();
e3.a = v3;
e3.b = v1;
//Crear poligono para este triangulo
var p = new EditPolyPolygon();
p.vertices = new List <EditPolyVertex>();
p.vertices.Add(v1);
p.vertices.Add(v2);
p.vertices.Add(v3);
p.edges = new List <EditPolyEdge>();
p.edges.Add(e1);
p.edges.Add(e2);
p.edges.Add(e3);
p.vbTriangles = new List <int>();
p.vbTriangles.Add(i * 3);
p.TGCPlane = TGCPlane.FromPoints(v1.position, v2.position, v3.position);
p.TGCPlane.Normalize();
p.matId = attributeBuffer[i];
//Agregar triangulo al index buffer
IndexBuffer[i * 3] = (short)v1Idx;
IndexBuffer[i * 3 + 1] = (short)v2Idx;
IndexBuffer[i * 3 + 2] = (short)v3Idx;
//Agregar a lista de poligonos
Polygons.Add(p);
/*
* //Buscar si hay un poligono ya existente al cual sumarnos (coplanar y que compartan una arista)
* EditPolyPolygon coplanarP = null;
* for (int j = 0; j < polygons.Count; j++)
* {
* //Coplanares y con igual material ID
* EditPolyPolygon p0 = polygons[j];
* if (p0.matId == p.matId && EditablePolyUtils.sameTGCPlane(p0.TGCPlane, p.TGCPlane))
* {
* //Buscar si tienen una arista igual
* int p0SharedEdgeIdx;
* int pSharedEdgeIdx;
* if (EditablePolyUtils.findShareEdgeBetweenPolygons(p0, p, out p0SharedEdgeIdx, out pSharedEdgeIdx))
* {
* //Obtener el tercer vertice del triangulo que no es parte de la arista compartida
* EditPolyEdge sharedEdge = p0.edges[p0SharedEdgeIdx];
* EditPolyVertex thirdVert;
* if (p.vertices[0] != sharedEdge.a && p.vertices[0] != sharedEdge.b)
* thirdVert = p.vertices[0];
* else if (p.vertices[1] != sharedEdge.a && p.vertices[1] != sharedEdge.b)
* thirdVert = p.vertices[1];
* else
* thirdVert = p.vertices[2];
*
* //Agregar el tercer vertice al poligno existente
* EditablePolyUtils.addVertexToPolygon(p0, sharedEdge, thirdVert);
*
* //Quitar arista compartida
* p0.edges.Remove(sharedEdge);
*
* //Agregar al poligono dos nuevas aristas que conectar los extremos de la arista compartida hacia el tercer vertice
* EditPolyEdge newPolEdge1 = new EditPolyEdge();
* newPolEdge1.a = sharedEdge.a;
* newPolEdge1.b = thirdVert;
* p0.edges.Add(newPolEdge1);
*
* EditPolyEdge newPolEdge2 = new EditPolyEdge();
* newPolEdge2.a = thirdVert;
* newPolEdge2.b = sharedEdge.b;
* p0.edges.Add(newPolEdge2);
*
* //Agregar indice de triangulo del vertexBuffer que se sumo al poligono
* p0.vbTriangles.Add(p.vbTriangles[0]);
*
* coplanarP = p0;
* }
* }
* }
* //Es un nuevo poligono, agregarlo
* if (coplanarP == null)
* {
* polygons.Add(p);
* }
*/
}
//Unificar aristas de los poligonos
foreach (var p in Polygons)
{
for (var i = 0; i < p.edges.Count; i++)
{
bool newEdgeAdded;
var eIdx = EditablePolyUtils.addEdgeToListIfUnique(Edges, p.edges[i], out newEdgeAdded);
var e = Edges[eIdx];
//Nueva arista incorporada a la lista
if (newEdgeAdded)
{
e.faces = new List <EditPolyPolygon>();
//Agregar referencia a vertices que usan la arista
e.a.edges.Add(e);
e.b.edges.Add(e);
}
//Se usa arista existente de la lista
else
{
//Reemplazar en poligono por la nueva
p.edges[i] = e;
}
//Indicar a la arista que pertenece al poligono actual
e.faces.Add(p);
}
}
setDirtyValues(false);
}