public int[] GetEdge(int x, int y, int scroll)
{
int[] edge = new int[2];
int index = ((y - 12) * 4 / 3 + SCROLL_SCALE * scroll - 50) / DIST_BETWEEN_BLOCKS;
edge[0] = index;
if (graph.GetAdj()[index].Count == 0)
{
edge[0] = -1;
return(edge);
}
else
if (graph.GetAdj()[index].Count == 1)
{
edge[1] = graph.GetAdj()[index][0];
return(edge);
}
else
{
if (graph.GetNodeType(index) != 5)
{
if (x >= 250)
{
edge[1] = graph.GetAdj()[index][0];
}
else
{
edge[1] = graph.GetAdj()[index][1];
}
}
else
{
if (x >= 250 + 50 * 3 / 4)
{
edge[1] = graph.GetAdj()[index][1];
}
else
{
edge[1] = graph.GetAdj()[index][0];
}
}
}
return(edge);
}
public Bitmap Draw(OrientedGraph graph, int scroll, int selectedID, int[] selectedEdge)
{
btm = new Bitmap(500, 800);
gr = Graphics.FromImage(btm);
for (int i = 0; i < graph.CountNodes(); i++)
{
Pen pen;
if (i == selectedID)
{
pen = new Pen(Color.Red, 3);
}
else
{
pen = new Pen(Color.Black, 3);
}
switch (graph.GetNodeType(i))
{
case 1:
{
gr.DrawRectangle(pen, 200 + graph.GetNodeShift(i) * 100, 25 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll, 100, 100);
break;
}
case 2:
{
Point[] p = new Point[4];
p[0] = new Point(200 + graph.GetNodeShift(i) * 100, 75 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
p[1] = new Point(250 + graph.GetNodeShift(i) * 100, 50 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
p[2] = new Point(300 + graph.GetNodeShift(i) * 100, 75 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
p[3] = new Point(250 + graph.GetNodeShift(i) * 100, 100 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
gr.DrawPolygon(pen, p);
break;
}
case 3:
{
gr.DrawEllipse(pen, 200 + graph.GetNodeShift(i) * 100, 50 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll, 100, 50);
break;
}
case 5:
{
Point[] p = new Point[4];
p[0] = new Point(200 + graph.GetNodeShift(i) * 100, 75 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
p[1] = new Point(250 + graph.GetNodeShift(i) * 100, 50 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
p[2] = new Point(300 + graph.GetNodeShift(i) * 100, 75 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
p[3] = new Point(250 + graph.GetNodeShift(i) * 100, 100 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
gr.DrawPolygon(pen, p);
break;
}
}
for (int j = 0; j < graph.GetAdj()[i].Count; j++)
{
if (selectedEdge[0] == i && selectedEdge[1] == graph.GetAdj()[i][j])
{
pen = Pens.Red;
}
else
{
pen = Pens.Black;
}
Point p1 = new Point(250 + graph.GetNodeShift(i) * 100, 75 + DIST_BETWEEN_BLOCKS * i - SCROLL_SCALE * scroll);
Point p2 = new Point(250 + graph.GetNodeShift(graph.GetAdj()[i][j]) * 100, 75 + DIST_BETWEEN_BLOCKS * graph.GetAdj()[i][j] - SCROLL_SCALE * scroll);
Drawline(pen, graph.GetNodeType(i), graph.GetNodeType(graph.GetAdj()[i][j]), p1, p2);
}
}
return(btm);
}