dbc522a224
Modified weapon scripts to eliminate specialized projectile behavior - allows charged weapons to have projectiles and modify weapon stats when charged Added machine gun weapon & VFX Moved third party code to Plugins folder to improve compile times
83 lines
2.5 KiB
C#
83 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using Microsoft.Msagl.Core.Geometry;
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using Microsoft.Msagl.Core.Geometry.Curves;
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using Microsoft.Msagl.Core;
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namespace Microsoft.Msagl.Routing.Visibility {
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/// <summary>
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/// compares couples only by looking at the couple first point
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/// we need the couple to hold the stem
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/// </summary>
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internal class StemStartPointComparer : IComparer<Stem> {
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Point pivot;
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int IComparer<Stem>.Compare(Stem i, Stem j) {
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if (i == j)
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return 0;
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if (i == null)
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return -1;
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if (j == null)
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return 1;
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Point a = i.Start.Point - pivot;
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Point b = j.Start.Point - pivot;
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return CompareVectorsByAngleToXAxis(a, b);
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}
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internal static int CompareVectorsByAngleToXAxis(Point a, Point b) {
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if (a.Y >= 0) {
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if (b.Y < 0)
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return -1;
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return CompareVectorsPointingToTheSameYHalfPlane(ref a, ref b);
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} else {
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//a.Y <0
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if (b.Y >= 0)
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return 1;
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return CompareVectorsPointingToTheSameYHalfPlane(ref a, ref b);
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}
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throw new InvalidOperationException();
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}
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private static int CompareVectorsPointingToTheSameYHalfPlane(ref Point a, ref Point b) {
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//now we know that a and b do not point to different Y half planes
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double sign = a.X * b.Y - a.Y * b.X;
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if (sign > ApproximateComparer.Tolerance)
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return -1;
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if (sign < -ApproximateComparer.Tolerance)
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return 1;
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//are they on the opposite sides of the pivot by X?
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if (a.X >= 0) {
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if (b.X < 0)//yes
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return -1;
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} else
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if (b.X >= 0)
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return 1;
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double del = Math.Abs(a.X) - Math.Abs(b.X);
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if (del < 0)
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return -1;
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if (del > 0)
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return 1;
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del = Math.Abs(a.Y) - Math.Abs(b.Y);
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if (del < 0)
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return -1;
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if (del > 0)
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return 1;
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return 0; //points are equal
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}
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
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internal StemStartPointComparer(Point pivotPoint) {
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this.pivot = pivotPoint;
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}
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}
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}
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