internal String CreateNewCurves()
{
TaggedUndirectedEdge <Pixel, EdgeTag> firstEdge;
TaggedUndirectedEdge <Pixel, EdgeTag> lastEdge;
Pixel lastPoint = null;
Pixel firstPoint;
bool hasEdge;
foreach (var edge in ng.Edges)
{
firstPoint = null;
//localiza uma aresta visivel e que seja de valencia diferente de 2, ou seja o inicio de uma curva.
if (edge.Tag.Visible && (edge.Source.valence != 2 || edge.Target.valence != 2))
{
//cria um array de pontos para esta curva
ArrayList curveOfEdges = new ArrayList();
//ir para inicio da curva, ou seja nodo com valencia != 2
firstEdge = edge;
if (firstEdge.Source.valence != 2 && firstEdge.Target.valence != 2)// curva de apenas dois pontos
{
edge.Tag.Visible = false;
firstPoint = null;
curveOfEdges.Add(firstEdge);
curvesOfEdges.Add(curveOfEdges);
if (edge.Tag.ColorA != Color.Beige)
{
curvesC.Add(new Curve(curveOfEdges, edge.Tag.ColorA));
}
if (edge.Tag.ColorB != Color.Beige)
{
curvesC.Add(new Curve(curveOfEdges, edge.Tag.ColorB));
}
}
else
{
edge.Tag.Visible = false;
curveOfEdges.Add(firstEdge);
if (firstEdge.Target.valence != 2)
{
firstPoint = firstEdge.Target;
lastPoint = firstEdge.Source;
}
else
{
firstPoint = firstEdge.Source;
lastPoint = firstEdge.Target;
}
}
if (firstPoint == null)
{
hasEdge = false;
}
else
{
hasEdge = true;
}
lastEdge = firstEdge;
while (hasEdge)//enquanto existirem mais arestas nesta curva adiciona elas
{
hasEdge = false;
//Obtem proxima aresta
foreach (var e in ng.AdjacentEdges(lastPoint))
{
if (e.Tag.Visible == true)
{
e.Tag.Visible = false;
if (e.Target.Equals(lastPoint))
{
lastPoint = e.Source;
}
else
{
lastPoint = e.Target;
}
//Se a valencia for dois a curva continua
if (lastPoint.valence == 2 && lastPoint != firstPoint)
{
curveOfEdges.Add(e);
hasEdge = true;
}
else
{
hasEdge = false;
curveOfEdges.Add(e);
curvesOfEdges.Add(curveOfEdges);
if (edge.Tag.ColorA != Color.Beige)
{
curvesC.Add(new Curve(curveOfEdges, edge.Tag.ColorA));
}
if (edge.Tag.ColorB != Color.Beige)
{
curvesC.Add(new Curve(curveOfEdges, edge.Tag.ColorB));
}
}
}
}
}
}
}
//Percorre as arestas que ficaram de fora por formarem um caminho fechado de arestas, todas com valencia 2
foreach (var edge in ng.Edges)
{
ArrayList curveOfEdges = new ArrayList();
if (edge.Tag.Visible)
{
firstEdge = edge;
edge.Tag.Visible = false;
curveOfEdges.Add(firstEdge);
firstPoint = firstEdge.Source;
hasEdge = true;
lastPoint = firstEdge.Target;
while (hasEdge)
{
hasEdge = false;
//Obtem proxima aresta
foreach (var e in ng.AdjacentEdges(lastPoint))
{
if (e.Tag.Visible == true)
{
e.Tag.Visible = false;
if (e.Target.Equals(lastPoint))
{
lastPoint = e.Source;
}
else
{
lastPoint = e.Target;
}
if (lastPoint.valence == 2 && lastPoint != firstPoint)
{
hasEdge = true;
curveOfEdges.Add(e);
}
else
{
hasEdge = false;
curveOfEdges.Add(e);
curvesOfEdges.Add(curveOfEdges);
if (edge.Tag.ColorA != Color.Beige)
{
curvesC.Add(new Curve(curveOfEdges, edge.Tag.ColorA));
}
if (edge.Tag.ColorB != Color.Beige)
{
curvesC.Add(new Curve(curveOfEdges, edge.Tag.ColorB));
}
}
}
}
}
}
}
SvgVector svg = new SvgVector
{
Height = Height * scale,
Width = Width * scale,
scale = 1//scale;
};
return(svg.ToCurves(CurvesOfEdgesToPoints(curvesOfEdges), "NewCurves.svg"));
}
/*
* Altera o formato do pixel com base nos visinhos
*/
public String ReshapePixelCell()
{
foreach (var v in g.Vertices)
{
int x = v.x;
int y = v.y;
Color c = v.color;
// foreach (var e in g.AdjacentEdges(v))
// Console.WriteLine("Aresta entre " + e.Source.x + "," + e.Source.y + " - " + e.Target.x + "," + e.Target.y);
//TOP LEFT
//Canto Superior Esquerdo
/*
* if tem tl
* -2 +2
+2 -2
* if o de cima tem bl
+2 +2
* senao
* 0 0
*/
//Firt Pixel fp - Last Pixel Lp
Pixel fP = null, p1 = null, p2 = null, p3 = null, p4 = null, lP = null, xP = null;
if (HasEdges(x, y, x - 1, y - 1, g)) //existe uma aresta entre este pixel e o pixel superior esquerdo
{
v.points.Add(new Point(x * scale - 2, y * scale + 2));
v.points.Add(new Point(x * scale + 2, y * scale - 2));
fP = GetOrAddVertex(x * scale - 2, y * scale + 2, ng);
p1 = GetOrAddVertex(x * scale + 2, y * scale - 2, ng);
AddNewEdge(fP, p1, PixelColorIs(x - 1, y - 1, g), c, ng); // se o pixel de superior esquerdo é da mesma cor ele não precisa aparecer
}
else if (HasEdges(x - 1, y, x, y - 1, g)) //verifica se existe uma aresta entre o pixel superior e o da esquerda
{
v.points.Add(new Point(x * scale + 2, y * scale + 2));
fP = GetOrAddVertex(x * scale + 2, y * scale + 2, ng);
}
else
{
v.points.Add(new Point(x * scale, y * scale));
fP = GetOrAddVertex(x * scale, y * scale, ng);
}
if (p1 != null)
{
lP = p1;
}
else
{
lP = fP;
}
//TOP RIGHT
/*
* if tem tr
+5 -2
+9 +2
* if o de cima tem br
+5 +2
* senao
+7 +0
*/
if (HasEdges(x, y, x + 1, y - 1, g)) //existe uma aresta entre este pixel e o pixel superior direito
{
v.points.Add(new Point(x * scale + 5, y * scale - 2));
v.points.Add(new Point(x * scale + 9, y * scale + 2));
p2 = GetOrAddVertex(x * scale + 5, y * scale - 2, ng);
xP = GetOrAddVertex(x * scale + 9, y * scale + 2, ng);
AddNewEdge(p2, xP, PixelColorIs(x + 1, y - 1, g), c, ng); //se o pixel superior direito é da mesma cor ele não precisa aparecer
}
else if (HasEdges(x + 1, y, v.x, y - 1, g)) //verifica se existe uma aresta entre o pixel superior e o da direita
{
v.points.Add(new Point(x * scale + 5, y * scale + 2));
p2 = GetOrAddVertex(x * scale + 5, y * scale + 2, ng);
}
else
{
v.points.Add(new Point(x * scale + 7, y * scale));
p2 = GetOrAddVertex(x * scale + 7, y * scale, ng);
}
if (lP != null && p2 != null)
{
AddNewEdge(lP, p2, PixelColorIs(x, y - 1, g), c, ng);
}
if (xP != null)
{
lP = xP;
}
else
{
lP = p2;
}
xP = null;
//botton righ
/*
* if tem br
+9 +5
+5 +9
* if o de cima tem tr
+5 +5
* senao +7 +7
*/
if (HasEdges(x + 1, y + 1, x, y, g)) //existe uma aresta entre este pixel e o pixel inferior direito
{
v.points.Add(new Point(x * scale + 9, y * scale + 5));
v.points.Add(new Point(x * scale + 5, y * scale + 9));
p3 = GetOrAddVertex(x * scale + 9, y * scale + 5, ng);
xP = GetOrAddVertex(x * scale + 5, y * scale + 9, ng);
AddNewEdge(p3, xP, PixelColorIs(x + 1, y + 1, g), c, ng); //Se o pixel de baixo é da mesma cor esta aresta não precisa aparecer
}
else if (HasEdges(v.x, y + 1, x + 1, v.y, g)) //verifica se existe uma aresta entre o pixel inferior e o da direita
{
v.points.Add(new Point(x * scale + 5, y * scale + 5));
p3 = GetOrAddVertex(x * scale + 5, y * scale + 5, ng);
}
else
{
v.points.Add(new Point(x * scale + 7, y * scale + 7));
p3 = GetOrAddVertex(x * scale + 7, y * scale + 7, ng);
}
if (lP != null && p3 != null)
{
AddNewEdge(lP, p3, PixelColorIs(x + 1, y, g), c, ng);
}
if (xP != null)
{
lP = xP;
}
else
{
lP = p3;
}
xP = null;
//BOTTON LEFT
/*
* if tem bl
+2 +9
* -2 +5
* if o de cima tem tl
+2 +5
* senao +0 +7
*/
if (HasEdges(x - 1, y + 1, x, y, g)) //existe uma aresta entre este pixel e o pixel inferior esquerdo
{
v.points.Add(new Point(x * scale + 2, y * scale + 9));
v.points.Add(new Point(x * scale - 2, y * scale + 5));
p4 = GetOrAddVertex(x * scale + 2, y * scale + 9, ng);
xP = GetOrAddVertex(x * scale - 2, y * scale + 5, ng);
AddNewEdge(p4, xP, PixelColorIs(x - 1, y + 1, g), c, ng); //se o pixel inferior esquerdo for da mesma cor ele não precisa aparecer
}
else if (HasEdges(x, y + 1, x - 1, y, g)) //verifica se existe uma aresta entre o pixel inferior e o da esquerda
{
v.points.Add(new Point(x * scale + 2, y * scale + 5));
p4 = GetOrAddVertex(x * scale + 2, y * scale + 5, ng);
}
else
{
v.points.Add(new Point(x * scale + 0, y * scale + 7));
p4 = GetOrAddVertex(x * scale + 0, y * scale + 7, ng);
}
if (lP != null && p4 != null)
{
AddNewEdge(lP, p4, PixelColorIs(x, y + 1, g), c, ng);
}
if (xP != null)
{
lP = xP;
}
else
{
lP = p4;
}
xP = null;
if (lP != null && fP != null)
{
AddNewEdge(lP, fP, PixelColorIs(x - 1, y, g), c, ng);
}
}
SvgVector svg = new SvgVector
{
Height = Height,
Width = Width,
scale = scale,
DrawNewCells = true,
DrawCellBorder = true,
DrawPixelArt = false,
DrawVertex = false,
DrawEdges = false
};
return(svg.ToImageSVG(g, "PixelReshaped.svg"));
}
/*
* p11 p12 p13
* p21 p p23
* p31 p32 p33
*/
internal String ImageToGraph(Bitmap b)
{
// FastBitmap fb = new FastBitmap(b);
Bitmap fb = b;
Height = b.Height;
Width = b.Width;
//Le imagem orignal e adiciona vertex - nodos
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
Pixel p = new Pixel(x, y, fb.GetPixel(x, y));
g.AddVertex(p);
}
}
//Le imagem orignal e adiciona edges - arestas
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
Pixel p = VertexSearch(x, y, g);
Pixel p11 = VertexSearch(x - 1, y - 1, g);
if (p11 != null && Pixel.colorIsSimilar(p11.color, p.color))
{
var e1 = new TaggedUndirectedEdge <Pixel, EdgeTag>(p, p11, new EdgeTag());
g.AddEdge(e1);
p.valence++;
p11.valence++;
}
Pixel p12 = VertexSearch(x, y - 1, g);
if (p12 != null && Pixel.colorIsSimilar(p12.color, p.color))
{
var e2 = new TaggedUndirectedEdge <Pixel, EdgeTag>(p, p12, new EdgeTag());
g.AddEdge(e2);
p.valence++;
p12.valence++;
}
Pixel p13 = VertexSearch(x + 1, y - 1, g);
if (p13 != null && Pixel.colorIsSimilar(p13.color, p.color))
{
if (p <= p13)
{
var e3 = new TaggedUndirectedEdge <Pixel, EdgeTag>(p, p13, new EdgeTag());
g.AddEdge(e3);
}
else
{
var e3 = new TaggedUndirectedEdge <Pixel, EdgeTag>(p13, p, new EdgeTag());
g.AddEdge(e3);
}
p.valence++;
p13.valence++;
}
Pixel p21 = VertexSearch(x - 1, y, g);
if (p21 != null && Pixel.colorIsSimilar(p21.color, p.color))
{
var e4 = new TaggedUndirectedEdge <Pixel, EdgeTag>(p, p21, new EdgeTag());
g.AddEdge(e4);
p.valence++;
p21.valence++;
}
}
}
SvgVector svg = new SvgVector
{
Height = Height,
Width = Width
};
return(svg.ToImageSVG(g, "Graph.svg"));
}
/*
* Examinar blocos de 2x2 nodos para eliminar a maior quantidade de arestas, e remover cruzamentos ambiguos
* 00 10
* 01 11
*/
internal String SolveAmbiguities()
{
for (int y = 0; y < Height - 1; y++)
{
for (int x = 0; x < Width - 1; x++)
{
Pixel p00 = VertexSearch(x, y, g);
Pixel p10 = VertexSearch(x + 1, y, g);
Pixel p01 = VertexSearch(x, y + 1, g);
Pixel p11 = VertexSearch(x + 1, y + 1, g);
//Console.WriteLine("P= " + x + " " + y + " Valence =" + p00.valence);
g.TryGetEdge(p11, p00, out TaggedUndirectedEdge <Pixel, EdgeTag> edge1);
g.TryGetEdge(p01, p10, out TaggedUndirectedEdge <Pixel, EdgeTag> edge2);
if (edge1 != null)
{
if (edge2 != null)
{
//Identificada uma ambiguidade
if (Pixel.colorIsSimilar(p00.color, p01.color))
{
//Se as 4 cores são iguais remove todas as arestas internas
if (edge1 != null)
{
g.RemoveEdge(edge1);
}
if (edge2 != null)
{
g.RemoveEdge(edge2);
}
}
//Heuristica da ilha
else if (edge1.Source.valence == 1 || edge1.Target.valence == 1)
{
if (edge2 != null)
{
g.RemoveEdge(edge2);
}
}
else if (edge2.Source.valence == 1 || edge2.Target.valence == 1)
{
if (edge1 != null)
{
g.RemoveEdge(edge1);
}
}
else
{
//Heuristica da curva
if (edge1.Source.valence == 2 || edge1.Target.valence == 2 || edge2.Source.valence == 2 || edge2.Target.valence == 2)
{
if (CurveSize(edge1) <= CurveSize(edge2))
{
if (edge1 != null)
{
g.RemoveEdge(edge1);
}
}
else
{
if (edge2 != null)
{
g.RemoveEdge(edge2);
}
}
}
else
//Heuristica dos pixels sobrepostos
{
Pixel p1 = VertexSearch(edge1.Source.x, edge1.Source.y, g);
Pixel p2 = VertexSearch(edge2.Source.x, edge2.Source.y, g);
//Pixel p3 = VertexSearch(edge1.Target.x, edge1.Target.y, g);
//Pixel p4 = VertexSearch(edge2.Target.x, edge2.Target.y, g);
Color c1 = p1.color;
Color c2 = p2.color;
int sumC1 = 0, sumC2 = 0;
//Inicializa x e y com -4 posicoes para verificar 3 pixeis em ambas direções
int xs = p1.x - 4;
int ys = p1.y - 4;
while (xs <= p1.x + 3)
{
while (ys <= p1.y + 3)
{
Pixel pixel = VertexSearch(x, y, g);
if (pixel.color == c1)
{
sumC1++;
}
else
if (pixel.color == c2)
{
sumC2++;
}
ys++;
}
xs++;
}
//A cor em maior quantidade representa o fundo, e deve se manter os detalhes conectados
if (sumC1 > sumC2) //Remove a cor em menor quantidade
{
g.RemoveEdge(edge1);
}
else
{
g.RemoveEdge(edge2);
}
}
}
}
}
}
}
SvgVector svg = new SvgVector
{
Height = Height,
Width = Width
};
//svg.DrawValence = true;
return(svg.ToImageSVG(g, "AmbiguitiesSolved.svg"));
}