static void CreateCorners(List <Vec2Info> points, List <ContourCorner> corners) { int j = points.Count; int beginAt = corners.Count; if (beginAt >= ushort.MaxValue) { throw new NotSupportedException(); } for (int i = 1; i < j - 1; ++i) { ContourCorner corner = new ContourCorner(corners.Count, points[i - 1], points[i], points[i + 1]); corners.Add(corner); #if DEBUG corner.dbugLeftIndex = beginAt + i - 1; corner.dbugMiddleIndex = beginAt + i; corner.dbugRightIndex = beginAt + i + 1; #endif } { ContourCorner corner = new ContourCorner(corners.Count, points[j - 2], points[j - 1], points[0]); corners.Add(corner); #if DEBUG corner.dbugLeftIndex = beginAt + j - 2; corner.dbugMiddleIndex = beginAt + j - 1; corner.dbugRightIndex = beginAt + 0; #endif } { ContourCorner corner = new ContourCorner(corners.Count, points[j - 1], points[0], points[1]); corners.Add(corner); #if DEBUG corner.dbugLeftIndex = beginAt + j - 1; corner.dbugMiddleIndex = beginAt + 0; corner.dbugRightIndex = beginAt + 1; #endif } }
static Vertex2d ConvToV2d(PointD p) => new Vertex2d(p.X, p.Y); //temp /// <summary> /// fill inner and outer border from corner0 to corner1 /// </summary> /// <param name="painter"></param> /// <param name="c0"></param> /// <param name="c1"></param> void FillBorders(AggPainter painter, ContourCorner c0, ContourCorner c1) { //counter-clockwise if (!c0.MiddlePoint_IsTouchPoint) { return; } //with a given corner, have have information of 3 points //left-point of the corner,=> from vertex //middle-point, current vertex //right-point,=> next vertex //a vertex may be touch-curve vertext, or 'not-touch-curve' vertex //'is not touch-curve point', => this vertex is a control point of C3 or C4 curve, //------------------------------------------------------- if (c0.RightPoint_IsTouchPoint) { //c0 => touch curve //c1 => touch curve, //we create an imaginary line from c0 to c1 //then we create an 'inner border' of a line from c0 to c1 //and we create an 'outer border' of a line from c0 to c1 // using (Tools.BorrowVxs(out var v1)) { //1. inner-border, set fill mode to inform proper color encoding of inner border _msdfEdgePxBlender.FillMode = MsdfEdgePixelBlender.BlenderFillMode.InnerBorder; //2020-03-13, version 3 fill is still better than v3.1, //TODO: review version v3.1 if (_use_v3_1) { //version 3.1 fill technique CreateBorder(v1, ConvToV2d(c1.RightPoint), ConvToV2d(c1.MiddlePoint), ConvToV2d(c0.MiddlePoint), ConvToV2d(c0.LeftPoint)); } else { //version 3 fill technique CreateInnerBorder(v1, c0.MiddlePoint.X, c0.MiddlePoint.Y, c1.MiddlePoint.X, c1.MiddlePoint.Y, INNER_BORDER_W); } painter.Fill(v1, c0.InnerColor); //------------- v1.Clear(); //reuse //2. outer-border, set fill mode too. _msdfEdgePxBlender.FillMode = MsdfEdgePixelBlender.BlenderFillMode.OuterBorder; if (_use_v3_1) { //version 3.1 fill technique CreateBorder(v1, ConvToV2d(c0.LeftPoint), ConvToV2d(c0.MiddlePoint), ConvToV2d(c1.MiddlePoint), ConvToV2d(c1.RightPoint)); } else { //version 3 fill technique CreateOuterBorder(v1, c0.MiddlePoint.X, c0.MiddlePoint.Y, c1.MiddlePoint.X, c1.MiddlePoint.Y, OUTER_BORDER_W); } painter.Fill(v1, c0.OuterColor); } } else { //painter.CurrentBxtBlendOp = null; //** //c0 is touch line, //but c1 is not, this means=> next segment will be a curve(C3 or C4 curve) // EdgeSegment ownerSeg = c1.CenterSegment; switch (ownerSeg.SegmentKind) { default: throw new NotSupportedException(); case EdgeSegmentKind.CubicSegment: { //approximate CubicSegment cs = (CubicSegment)ownerSeg; using (Tools.BorrowVxs(out var v1)) using (Tools.BorrowShapeBuilder(out var b)) using (Tools.BorrowStroke(out var strk)) { b.MoveTo(cs.P0.x + _dx, cs.P0.y + _dy) //... .Curve4To(cs.P1.x + _dx, cs.P1.y + _dy, cs.P2.x + _dx, cs.P2.y + _dy, cs.P3.x + _dx, cs.P3.y + _dy) .NoMore() .Flatten(); //----------------------- //fill outside part of the curve strk.Width = CURVE_STROKE_EACHSIDE * 2; strk.StrokeSideForOpenShape = StrokeSideForOpenShape.Outside; strk.MakeVxs(b.CurrentSharedVxs, v1); painter.Fill(v1, c0.OuterColor); //----------------------- //fill inside part of the curve v1.Clear(); //reuse strk.StrokeSideForOpenShape = StrokeSideForOpenShape.Inside; strk.MakeVxs(b.CurrentSharedVxs, v1); painter.Fill(v1, c0.InnerColor); //----------------------- } } break; case EdgeSegmentKind.QuadraticSegment: { QuadraticSegment qs = (QuadraticSegment)ownerSeg; using (Tools.BorrowVxs(out var v1)) using (Tools.BorrowShapeBuilder(out var b)) using (Tools.BorrowStroke(out var strk)) { b.MoveTo(qs.P0.x + _dx, qs.P0.y + _dy)//... .Curve3To(qs.P1.x + _dx, qs.P1.y + _dy, qs.P2.x + _dx, qs.P2.y + _dy) .NoMore() .Flatten(); //----------------------- //fill outside part of the curve strk.Width = CURVE_STROKE_EACHSIDE * 2; strk.StrokeSideForOpenShape = StrokeSideForOpenShape.Outside; strk.MakeVxs(b.CurrentSharedVxs, v1); painter.Fill(v1, c0.OuterColor); //----------------------- //fill inside part of the curve v1.Clear();//reuse strk.StrokeSideForOpenShape = StrokeSideForOpenShape.Inside; strk.MakeVxs(b.CurrentSharedVxs, v1); painter.Fill(v1, c0.InnerColor); //----------------------- } } break; } } }