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ajandClaude Opus 5.5
313b5f57d6
PlateToolManager keeps one active tool with the WinForms action rules (Escape cancels, then returns to Select, then resumes the ended tool) and status text. SelectTool selects by click, Ctrl+click and window (contains/intersect), takes common-line groups together and picks cut-offs by their strokes. PlateHitTester hit-tests the shared display geometry; PlateSelection reads and sets by part index. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
89 lines
3.3 KiB
C#
89 lines
3.3 KiB
C#
using OpenNest.Geometry;
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namespace OpenNest.Desktop.Interaction;
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/// <summary>How a dragged selection window picks parts and cut-offs.</summary>
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public enum WindowSelectionMode
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{
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/// <summary>Anything the window touches: dragged from right to left.</summary>
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Intersect,
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/// <summary>Only what lies wholly inside the window: dragged from left to right.</summary>
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Contains,
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}
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/// <summary>
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/// A selection window between the point a drag started and where it is now, in plate (world)
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/// coordinates. As in the WinForms view, dragging to the right selects what the window contains
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/// and dragging to the left (or straight up or down) selects what it touches.
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/// </summary>
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public readonly record struct SelectionWindow(Vector First, Vector Second)
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{
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public WindowSelectionMode Mode =>
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First.X < Second.X ? WindowSelectionMode.Contains : WindowSelectionMode.Intersect;
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public double Left => System.Math.Min(First.X, Second.X);
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public double Right => System.Math.Max(First.X, Second.X);
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public double Bottom => System.Math.Min(First.Y, Second.Y);
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public double Top => System.Math.Max(First.Y, Second.Y);
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/// <summary>The window as a box (a fresh copy each time).</summary>
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public Box Box => new(Left, Bottom, Right - Left, Top - Bottom);
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/// <summary>Whether <paramref name="point"/> lies in the window, edges included.</summary>
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public bool Contains(Vector point) =>
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point.X >= Left && point.X <= Right && point.Y >= Bottom && point.Y <= Top;
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/// <summary>Whether <paramref name="box"/> lies in the window, edges included.</summary>
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public bool Contains(Box box) =>
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box.Left >= Left && box.Right <= Right && box.Bottom >= Bottom && box.Top <= Top;
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/// <summary>Whether <paramref name="box"/> and the window overlap, touching edges included.</summary>
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public bool Overlaps(Box box) =>
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box.Left <= Right && box.Right >= Left && box.Bottom <= Top && box.Top >= Bottom;
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/// <summary>Whether the segment from <paramref name="start"/> to <paramref name="end"/> enters the window.</summary>
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public bool Intersects(Vector start, Vector end)
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{
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if (Contains(start) || Contains(end))
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return true;
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// Clip the segment against all four edges (Liang-Barsky): a segment can cross the window
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// without ending inside it.
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var min = 0.0;
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var max = 1.0;
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var dx = end.X - start.X;
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var dy = end.Y - start.Y;
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return Clip(-dx, start.X - Left, ref min, ref max)
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&& Clip(dx, Right - start.X, ref min, ref max)
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&& Clip(-dy, start.Y - Bottom, ref min, ref max)
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&& Clip(dy, Top - start.Y, ref min, ref max);
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}
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/// <summary>The window in the frame whose origin is at <paramref name="origin"/>, such as a placed part's program frame.</summary>
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public SelectionWindow RelativeTo(Vector origin) => new(First - origin, Second - origin);
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private static bool Clip(double p, double q, ref double min, ref double max)
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{
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if (p == 0)
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return q >= 0;
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var t = q / p;
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if (p < 0)
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{
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if (t > max)
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return false;
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min = System.Math.Max(min, t);
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}
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else
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{
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if (t < min)
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return false;
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max = System.Math.Min(max, t);
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}
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return min <= max;
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}
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}
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