/// <summary>
/// Actualizar datos de UI de EditablePoly
/// </summary>
public void updateUiPanel()
{
control.IgnoreChangeEvents = true;
//Modificacion de textura en poligonos
if (selectionList.Count > 0 && mesh.DiffuseMaps.Length > 0 && currentPrimitive == PrimitiveType.Polygon)
{
EditPolyPolygon firstPolygon = (EditPolyPolygon)selectionList[0];
control.numericUpDownEPolyTextureNumber.Enabled = true;
control.numericUpDownEPolyTextureNumber.Minimum = 1;
control.numericUpDownEPolyTextureNumber.Maximum = mesh.DiffuseMaps.Length;
control.numericUpDownEPolyTextureNumber.Value = firstPolygon.matId + 1;
control.pictureBoxEPolyTexture.Enabled = true;
if (control.pictureBoxEPolyTexture.Image != null)
{
control.pictureBoxEPolyTexture.Image.Dispose();
}
string imagePath = mesh.DiffuseMaps[firstPolygon.matId].FilePath;
control.pictureBoxEPolyTexture.Image = Image.FromFile(imagePath);
control.pictureBoxEPolyTexture.ImageLocation = imagePath;
control.buttonEPolyAddTexture.Enabled = true;
control.buttonEPolyDeleteTexture.Enabled = mesh.DiffuseMaps.Length > 1 ? true : false;
}
else
{
control.numericUpDownEPolyTextureNumber.Enabled = false;
control.pictureBoxEPolyTexture.Enabled = false;
control.buttonEPolyAddTexture.Enabled = false;
control.buttonEPolyDeleteTexture.Enabled = false;
}
control.IgnoreChangeEvents = false;
}
/*
* /// <summary>
* /// Filtrar todas las aristas que tiene un poligono y dejarle solo las que son parte del borde del poligono
* /// (Se quitan todas las aristas interiores)
* /// </summary>
* public static void computePolygonExternalEdges(Polygon p)
* {
* if (p.vertices.Count == 3)
* return;
*
* Vector3 planeNorm = p.getNormal();
* List<Edge> externalEdges = new List<Edge>();
* foreach (Edge e in p.edges)
* {
* //Half-plane entre la arista y la normal del poligono
* Vector3 vec = e.b.position - e.a.position;
* Vector3 n = Vector3.Cross(planeNorm, vec);
* Plane halfPlane = Plane.FromPointNormal(e.a.position, n);
*
* //Checkear el signo de todos los demas vertices del poligono
* bool first = true;
* TgcCollisionUtils.PointPlaneResult lastR = TgcCollisionUtils.PointPlaneResult.COINCIDENT;
* bool inside = false;
* foreach (Vertex v in p.vertices)
* {
* if(v.vbIndex != e.a.vbIndex && v.vbIndex != e.b.vbIndex )
* {
* TgcCollisionUtils.PointPlaneResult r = TgcCollisionUtils.classifyPointPlane(v.position, halfPlane);
* if(first)
* {
* first = false;
* lastR = r;
* }
* else if(r != lastR)
* {
* inside = true;
* break;
* }
* }
* }
* if(!inside)
* {
* externalEdges.Add(e);
* }
* }
* p.edges = externalEdges;
* }
*
* /// <summary>
* /// Ordenar los vertices del poligono en base al recorrido de sus aristas externas
* /// </summary>
* public static void sortPolygonVertices(Polygon p)
* {
* if (p.vertices.Count == 3)
* return;
*
* List<Vertex> sortedVertices = new List<Vertex>();
* Edge lastEdge = p.edges[0];
* for (int i = 1; i < p.edges.Count; i++)
* {
* sortedVertices.Add(lastEdge.a);
* bool found = false;
* foreach (Edge e in p.edges)
* {
* if(lastEdge.b.vbIndex == e.a.vbIndex)
* {
* lastEdge = e;
* found = true;
* break;
* }
* }
* if(!found)
* throw new Exception("No se pudo recorrer aristas de poligono en loop. Poligono: " + p);
*
* }
* sortedVertices.Add(lastEdge.a);
* p.vertices = sortedVertices;
* }
*/
/// <summary>
/// Agregar un vertice a un poligono existente, ubicandolo en el medio de los dos vertices de la arista que compartian entre si
/// </summary>
public static void addVertexToPolygon(EditPolyPolygon p, EditPolyEdge sharedEdge, EditPolyVertex newV)
{
for (int i = 0; i < p.vertices.Count; i++)
{
if (p.vertices[i].vbIndex == sharedEdge.a.vbIndex)
{
p.vertices.Add(null);
for (int j = p.vertices.Count - 2; j >= i + 1; j--)
{
p.vertices[j + 1] = p.vertices[j];
}
p.vertices[i + 1] = newV;
break;
}
}
}
/// <summary>
/// Busca si ambos poligonos tienen una arista igual.
/// Si encontro retorna el indice de la arista igual de cada poligono.
/// </summary>
public static bool findShareEdgeBetweenPolygons(EditPolyPolygon p1, EditPolyPolygon p2, out int p1Edge, out int p2Edge)
{
for (int i = 0; i < p1.edges.Count; i++)
{
for (int j = 0; j < p2.edges.Count; j++)
{
if (EditablePolyUtils.sameEdge(p1.edges[i], p2.edges[j]))
{
p1Edge = i;
p2Edge = j;
return(true);
}
}
}
p1Edge = -1;
p2Edge = -1;
return(false);
}
/// <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);
}
/// <summary>
/// Eliminar poligono
/// </summary>
private void deletePolygon(EditPolyPolygon p)
{
//Quitar triangulos de index buffer
var vertexToDelete = p.vbTriangles.Count * 3;
var newIndexBuffer = new short[IndexBuffer.Length - vertexToDelete];
var w = 0;
for (var i = 0; i < IndexBuffer.Length; i += 3)
{
var toDelete = false;
for (var j = 0; j < p.vbTriangles.Count; j++)
{
if (i == p.vbTriangles[j])
{
toDelete = true;
break;
}
}
if (toDelete)
{
//Ajustar todos los indices de triangulos del resto de los poligonos existentes
foreach (var poly in Polygons)
{
if (poly != p)
{
for (var j = 0; j < poly.vbTriangles.Count; j++)
{
if (poly.vbTriangles[j] >= i)
{
poly.vbTriangles[j] -= 3;
}
}
}
}
}
else
{
newIndexBuffer[w++] = IndexBuffer[i];
newIndexBuffer[w++] = IndexBuffer[i + 1];
newIndexBuffer[w++] = IndexBuffer[i + 2];
}
}
IndexBuffer = newIndexBuffer;
//Quitar referencia a aristas
foreach (var edge in p.edges)
{
edge.removePolygon(p);
}
//Eliminar aristas que quedaron aisladas
foreach (var edge in p.edges)
{
if (edge.faces.Count == 0)
{
deleteEdge(edge);
}
}
//Quitar de lista de poligonos
for (var i = 0; i < Polygons.Count; i++)
{
if (Polygons[i] == p)
{
Polygons.RemoveAt(i);
break;
}
}
//Registrar triangulos que se eliminaron (apuntando al indice del primer vertice de cada triangulo)
//Se registran el valor original al que apuntaba el triangulo antes de haber borrado nada
var currentDeletedCount = deletedTriangles.Count;
for (var i = 0; i < p.vbTriangles.Count; i++)
{
var triDelIdx = p.vbTriangles[i];
for (var j = 0; j < currentDeletedCount; j++)
{
if (triDelIdx < deletedTriangles[j])
{
break;
}
triDelIdx += 3;
}
deletedTriangles.Add(triDelIdx);
}
deletedTriangles.Sort();
}
