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C# DelaunayTriangle.SetConstrainedEdgeAcross方法代码示例

本文整理汇总了C#中Poly2Tri.DelaunayTriangle.SetConstrainedEdgeAcross方法的典型用法代码示例。如果您正苦于以下问题:C# DelaunayTriangle.SetConstrainedEdgeAcross方法的具体用法?C# DelaunayTriangle.SetConstrainedEdgeAcross怎么用?C# DelaunayTriangle.SetConstrainedEdgeAcross使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Poly2Tri.DelaunayTriangle的用法示例。


在下文中一共展示了DelaunayTriangle.SetConstrainedEdgeAcross方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: Legalize

        /// <summary>
        /// Returns true if triangle was legalized
        /// </summary>
        private static bool Legalize(DTSweepContext tcx, DelaunayTriangle t)
        {
            // To legalize a triangle we start by finding if any of the three edges
            // violate the Delaunay condition
            for (int i = 0; i < 3; i++)
            {
                // TODO: fix so that cEdge is always valid when creating new triangles then we can check it here
                //       instead of below with ot
                if (t.EdgeIsDelaunay[i])
                {
                    continue;
                }

                DelaunayTriangle ot = t.Neighbors[i];
                if (ot == null)
                {
                    continue;
                }

                TriangulationPoint p = t.Points[i];
                TriangulationPoint op = ot.OppositePoint(t, p);
                int oi = ot.IndexOf(op);
                // If this is a Constrained Edge or a Delaunay Edge(only during recursive legalization)
                // then we should not try to legalize
                if (ot.EdgeIsConstrained[oi] || ot.EdgeIsDelaunay[oi])
                {
                    t.SetConstrainedEdgeAcross(p, ot.EdgeIsConstrained[oi]); // XXX: have no good way of setting this property when creating new triangles so lets set it here
                    continue;
                }

                if (!TriangulationUtil.SmartIncircle(p, t.PointCCWFrom(p), t.PointCWFrom(p), op))
                {
                    continue;
                }

                // Lets mark this shared edge as Delaunay 
                t.EdgeIsDelaunay[i] = true;
                ot.EdgeIsDelaunay[oi] = true;

                // Lets rotate shared edge one vertex CW to legalize it
                RotateTrianglePair(t, p, ot, op);

                // We now got one valid Delaunay Edge shared by two triangles
                // This gives us 4 new edges to check for Delaunay

                // Make sure that triangle to node mapping is done only one time for a specific triangle
                if (!Legalize(tcx, t))
                {
                    tcx.MapTriangleToNodes(t);
                }
                if (!Legalize(tcx, ot))
                {
                    tcx.MapTriangleToNodes(ot);
                }

                // Reset the Delaunay edges, since they only are valid Delaunay edges
                // until we add a new triangle or point.
                // XXX: need to think about this. Can these edges be tried after we 
                //      return to previous recursive level?
                t.EdgeIsDelaunay[i] = false;
                ot.EdgeIsDelaunay[oi] = false;

                // If triangle have been legalized no need to check the other edges since
                // the recursive legalization will handles those so we can end here.
                return true;
            }
            return false;
        }
开发者ID:Ayagami,项目名称:Tesis,代码行数:71,代码来源:DTSweep.cs


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