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); }