34 lines
965 B
C#
34 lines
965 B
C#
/* Original source Farseer Physics Engine:
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* Copyright (c) 2014 Ian Qvist, http://farseerphysics.codeplex.com
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* Microsoft Permissive License (Ms-PL) v1.1
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*/
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namespace FarseerPhysics.Common.Decomposition.Seidel
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{
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internal class YNode : Node
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{
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private Edge _edge;
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public YNode(Edge edge, Node lChild, Node rChild)
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: base(lChild, rChild)
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{
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_edge = edge;
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}
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public override Sink Locate(Edge edge)
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{
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if (_edge.IsAbove(edge.P))
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return RightChild.Locate(edge); // Move down the graph
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if (_edge.IsBelow(edge.P))
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return LeftChild.Locate(edge); // Move up the graph
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// s and segment share the same endpoint, p
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if (edge.Slope < _edge.Slope)
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return RightChild.Locate(edge); // Move down the graph
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// Move up the graph
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return LeftChild.Locate(edge);
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}
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}
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} |