public static void addHermiteNormals(AbstractHermiteGrid grid, float cellSize, LineManager3DLines lines)
{
grid.ForEachGridPoint(p =>
{
var sign = grid.GetSign(p);
var dirs = new[] { new Point3(1, 0, 0), new Point3(0, 1, 0), new Point3(0, 0, 1) };
foreach (var dir in dirs)
{
if (sign == grid.GetSign(p + dir))
{
continue;
}
//lines.AddLine(vertPos, end, Color.Black.dx());
var edge = grid.GetEdgeId(p, p + dir);
var edgeStart = grid.GetEdgeOffsets(edge)[0] + p;
var edgeEnd = grid.GetEdgeOffsets(edge)[1] + p;
var normal = grid.GetEdgeNormal(p, edge);
var pos = grid.GetEdgeIntersectionCubeLocal(p, edge);
pos = (p + pos) * cellSize;
lines.AddLine(pos, pos + normal * 0.4f * cellSize, Color.Blue);
lines.AddLine(edgeStart.ToVector3() * cellSize, edgeEnd.ToVector3() * cellSize, Color.LightBlue);
lines.AddCenteredBox(pos, 0.02f, Color.Red);
}
});
}
/// <summary>
/// Draw hermite info for given cube and outputs the info to a textarea
/// </summary>
private void drawHermiteInfoForCube(Point3 gridPoint, Textarea textarea)
{
textarea.Text = "";
foreach (var edgeID in grid.GetAllEdgeIds())
{
var points = grid.GetEdgeOffsets(edgeID);
Vector3 edgeWorldStart = (gridPoint + points[0]).ToVector3() * CellSize;
TW.Graphics.LineManager3D.AddLine(edgeWorldStart, (gridPoint + points[1]).ToVector3() * CellSize,
Color.Purple.dx());
var hasEdge = false;
if (grid.HasEdgeData(gridPoint, edgeID))
{
textarea.Text += grid.GetEdgeIntersectionCubeLocal(gridPoint, edgeID) + "n: " +
grid.getEdgeData(gridPoint, edgeID).TakeXYZ() + "\n";
hasEdge = true;
var normal = grid.GetEdgeNormal(gridPoint, edgeID);
Vector3 worldIntersection = (grid.GetEdgeIntersectionCubeLocal(gridPoint, edgeID) + gridPoint) * CellSize;
TW.Graphics.LineManager3D.AddCenteredBox(worldIntersection, 0.04f, Color.LawnGreen.dx());
TW.Graphics.LineManager3D.AddLine(worldIntersection, worldIntersection + normal * 0.2f, Color.Blue.dx());
}
if (hasEdge)
{
var qef = (Vector3)DualContouringAlgorithm.calculateQefPoint(grid, grid.GetCubeSigns(gridPoint), gridPoint);
TW.Graphics.LineManager3D.AddCenteredBox(((Vector3)gridPoint.ToVector3() + qef) * CellSize, 0.05f, Color.Orange.dx());
}
}
}