public void GenerateMarchingSquaresAndLines(Action <double, string> progressReporter, ImageBuffer image, IThresholdFunction thresholdFunction)
{
if (image != null)
{
// Regenerate outline
var marchingSquaresData = new MarchingSquaresByte(
image,
thresholdFunction.ZeroColor,
thresholdFunction.Threshold,
0);
progressReporter?.Invoke(0, "Creating Outline");
marchingSquaresData.CreateLineSegments();
progressReporter?.Invoke(.1, null);
int pixelsToIntPointsScale = 1000;
var lineLoops = marchingSquaresData.CreateLineLoops(pixelsToIntPointsScale);
progressReporter?.Invoke(.15, null);
var min = new IntPoint(-10, -10);
var max = new IntPoint(10 + image.Width * pixelsToIntPointsScale, 10 + image.Height * pixelsToIntPointsScale);
var boundingPoly = new Polygon();
boundingPoly.Add(min);
boundingPoly.Add(new IntPoint(min.X, max.Y));
boundingPoly.Add(max);
boundingPoly.Add(new IntPoint(max.X, min.Y));
// now clip the polygons to get the inside and outside polys
var clipper = new Clipper();
clipper.AddPaths(lineLoops, PolyType.ptSubject, true);
clipper.AddPath(boundingPoly, PolyType.ptClip, true);
var polygonShape = new Polygons();
progressReporter?.Invoke(.3, null);
clipper.Execute(ClipType.ctIntersection, polygonShape);
progressReporter?.Invoke(.55, null);
polygonShape = Clipper.CleanPolygons(polygonShape, 100);
progressReporter?.Invoke(.75, null);
VertexStorage rawVectorShape = polygonShape.PolygonToPathStorage();
var aabb = this.VisibleMeshes().FirstOrDefault().GetAxisAlignedBoundingBox();
var xScale = aabb.XSize / image.Width;
var affine = Affine.NewScaling(1.0 / pixelsToIntPointsScale * xScale);
affine *= Affine.NewTranslation(-aabb.XSize / 2, -aabb.YSize / 2);
rawVectorShape.transform(affine);
this.VertexSource = rawVectorShape;
progressReporter?.Invoke(1, null);
}
}
public static PolyTree FindDistictObjectBounds(ImageBuffer image)
{
var intensity = new MapOnMaxIntensity();
var marchingSquaresData = new MarchingSquaresByte(image, intensity.ZeroColor, intensity.Threshold, 0);
marchingSquaresData.CreateLineSegments();
Polygons lineLoops = marchingSquaresData.CreateLineLoops(1);
if (lineLoops.Count == 1)
{
return(null);
}
// create a bounding polygon to clip against
var min = new IntPoint(long.MaxValue, long.MaxValue);
var max = new IntPoint(long.MinValue, long.MinValue);
foreach (Polygon polygon in lineLoops)
{
foreach (IntPoint point in polygon)
{
min.X = Math.Min(point.X - 10, min.X);
min.Y = Math.Min(point.Y - 10, min.Y);
max.X = Math.Max(point.X + 10, max.X);
max.Y = Math.Max(point.Y + 10, max.Y);
}
}
var boundingPoly = new Polygon
{
min,
new IntPoint(min.X, max.Y),
max,
new IntPoint(max.X, min.Y)
};
// now clip the polygons to get the inside and outside polys
var clipper = new Clipper();
clipper.AddPaths(lineLoops, PolyType.ptSubject, true);
clipper.AddPath(boundingPoly, PolyType.ptClip, true);
var polyTreeForPlate = new PolyTree();
clipper.Execute(ClipType.ctIntersection, polyTreeForPlate);
return(polyTreeForPlate);
}
static public PolyTree FindDistictObjectBounds(ImageBuffer image)
{
MarchingSquaresByte marchingSquaresData = new MarchingSquaresByte(image, 5, 0);
marchingSquaresData.CreateLineSegments();
Polygons lineLoops = marchingSquaresData.CreateLineLoops(1);
if (lineLoops.Count == 1)
{
return(null);
}
// create a bounding polygon to clip against
IntPoint min = new IntPoint(long.MaxValue, long.MaxValue);
IntPoint max = new IntPoint(long.MinValue, long.MinValue);
foreach (Polygon polygon in lineLoops)
{
foreach (IntPoint point in polygon)
{
min.X = Math.Min(point.X - 10, min.X);
min.Y = Math.Min(point.Y - 10, min.Y);
max.X = Math.Max(point.X + 10, max.X);
max.Y = Math.Max(point.Y + 10, max.Y);
}
}
Polygon boundingPoly = new Polygon();
boundingPoly.Add(min);
boundingPoly.Add(new IntPoint(min.X, max.Y));
boundingPoly.Add(max);
boundingPoly.Add(new IntPoint(max.X, min.Y));
// now clip the polygons to get the inside and outside polys
Clipper clipper = new Clipper();
clipper.AddPaths(lineLoops, PolyType.ptSubject, true);
clipper.AddPath(boundingPoly, PolyType.ptClip, true);
PolyTree polyTreeForPlate = new PolyTree();
clipper.Execute(ClipType.ctIntersection, polyTreeForPlate);
return(polyTreeForPlate);
}
