623 lines
23 KiB
C#
623 lines
23 KiB
C#
using Graphing.Abstract;
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using Graphing.Helpers;
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using Graphing.Parts;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Net.Http;
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using System.Reflection;
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using System.Text.Json;
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using System.Text.Json.Nodes;
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using System.Windows.Forms;
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namespace Graphing.Forms;
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public partial class GraphForm : Form
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{
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public static readonly Color BackgroundColor = Color.White;
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public static readonly Color MainAxisColor = Color.Black;
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public static readonly Color SemiAxisColor = Color.FromArgb(unchecked((int)0xFF_999999));
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public static readonly Color QuarterAxisColor = Color.FromArgb(unchecked((int)0xFF_E0E0E0));
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public static readonly Color UnitsTextColor = Color.Black;
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public Float2 ScreenCenter { get; private set; }
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public Float2 Dpi { get; private set; }
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public float DpiFloat { get; private set; }
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public double ZoomLevel
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{
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get => _zoomLevel;
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set
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{
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double oldZoom = ZoomLevel;
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_zoomLevel = Math.Clamp(value, 1e-5, 1e3);
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int totalSegments = 0;
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foreach (Graphable able in ables) totalSegments += able.GetItemsToRender(this).Count();
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if (totalSegments > 10_000)
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{
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_zoomLevel = oldZoom;
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return; // Too many segments, stop.
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}
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}
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}
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private double _zoomLevel;
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private readonly Point initialWindowPos;
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private readonly Size initialWindowSize;
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public Graphable[] Graphables => ables.ToArray();
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public Float2 MinVisibleGraph => ScreenSpaceToGraphSpace(new Int2(0, ClientRectangle.Height));
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public Float2 MaxVisibleGraph => ScreenSpaceToGraphSpace(new Int2(ClientRectangle.Width, 0));
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private readonly List<Graphable> ables;
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public GraphForm(string title)
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{
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SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.UserPaint, true);
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InitializeComponent();
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Text = title;
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Graphics tempG = CreateGraphics();
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Dpi = new(tempG.DpiX, tempG.DpiY);
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tempG.Dispose();
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DpiFloat = (float)((Dpi.x + Dpi.y) / 2);
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ables = [];
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ZoomLevel = 1;
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initialWindowPos = Location;
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initialWindowSize = Size;
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RunUpdateChecker();
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}
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public Int2 GraphSpaceToScreenSpace(Float2 graphPoint)
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{
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graphPoint.y = -graphPoint.y;
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graphPoint.x -= ScreenCenter.x;
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graphPoint.y -= ScreenCenter.y;
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graphPoint.x *= Dpi.x / ZoomLevel;
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graphPoint.y *= Dpi.y / ZoomLevel;
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graphPoint.x += ClientRectangle.Width / 2.0;
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graphPoint.y += ClientRectangle.Height / 2.0;
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return new((int)graphPoint.x, (int)graphPoint.y);
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}
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public Float2 ScreenSpaceToGraphSpace(Int2 screenPoint)
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{
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Float2 result = new(screenPoint.x, screenPoint.y);
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result.x -= ClientRectangle.Width / 2.0;
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result.y -= ClientRectangle.Height / 2.0;
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result.x /= Dpi.x / ZoomLevel;
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result.y /= Dpi.y / ZoomLevel;
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result.x += ScreenCenter.x;
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result.y += ScreenCenter.y;
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result.y = -result.y;
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return result;
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}
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protected virtual void PaintGrid(Graphics g)
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{
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double axisScale = Math.Pow(2, Math.Round(Math.Log2(ZoomLevel)));
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// Draw horizontal/vertical quarter-axis.
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Brush quarterBrush = new SolidBrush(QuarterAxisColor);
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Pen quarterPen = new(quarterBrush, DpiFloat * 2 / 192);
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for (double x = Math.Ceiling(MinVisibleGraph.x * 4 / axisScale) * axisScale / 4; x <= Math.Floor(MaxVisibleGraph.x * 4 / axisScale) * axisScale / 4; x += axisScale / 4)
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{
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Int2 startPos = GraphSpaceToScreenSpace(new Float2(x, MinVisibleGraph.y)),
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endPos = GraphSpaceToScreenSpace(new Float2(x, MaxVisibleGraph.y));
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g.DrawLine(quarterPen, startPos, endPos);
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}
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for (double y = Math.Ceiling(MinVisibleGraph.y * 4 / axisScale) * axisScale / 4; y <= Math.Floor(MaxVisibleGraph.y * 4 / axisScale) * axisScale / 4; y += axisScale / 4)
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{
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Int2 startPos = GraphSpaceToScreenSpace(new Float2(MinVisibleGraph.x, y)),
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endPos = GraphSpaceToScreenSpace(new Float2(MaxVisibleGraph.x, y));
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g.DrawLine(quarterPen, startPos, endPos);
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}
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// Draw horizontal/vertical semi-axis.
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Brush semiBrush = new SolidBrush(SemiAxisColor);
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Pen semiPen = new(semiBrush, DpiFloat * 2 / 192);
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for (double x = Math.Ceiling(MinVisibleGraph.x / axisScale) * axisScale; x <= Math.Floor(MaxVisibleGraph.x / axisScale) * axisScale; x += axisScale)
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{
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Int2 startPos = GraphSpaceToScreenSpace(new Float2(x, MinVisibleGraph.y)),
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endPos = GraphSpaceToScreenSpace(new Float2(x, MaxVisibleGraph.y));
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g.DrawLine(semiPen, startPos, endPos);
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}
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for (double y = Math.Ceiling(MinVisibleGraph.y / axisScale) * axisScale; y <= Math.Floor(MaxVisibleGraph.y / axisScale) * axisScale; y += axisScale)
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{
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Int2 startPos = GraphSpaceToScreenSpace(new Float2(MinVisibleGraph.x, y)),
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endPos = GraphSpaceToScreenSpace(new Float2(MaxVisibleGraph.x, y));
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g.DrawLine(semiPen, startPos, endPos);
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}
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Brush mainLineBrush = new SolidBrush(MainAxisColor);
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Pen mainLinePen = new(mainLineBrush, DpiFloat * 3 / 192);
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// Draw the main axis (on top of the semi axis).
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Int2 startCenterY = GraphSpaceToScreenSpace(new Float2(0, MinVisibleGraph.y)),
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endCenterY = GraphSpaceToScreenSpace(new Float2(0, MaxVisibleGraph.y)),
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startCenterX = GraphSpaceToScreenSpace(new Float2(MinVisibleGraph.x, 0)),
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endCenterX = GraphSpaceToScreenSpace(new Float2(MaxVisibleGraph.x, 0));
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g.DrawLine(mainLinePen, startCenterX, endCenterX);
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g.DrawLine(mainLinePen, startCenterY, endCenterY);
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}
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protected virtual void PaintUnits(Graphics g)
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{
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double axisScale = Math.Pow(2, Math.Round(Math.Log(ZoomLevel, 2)));
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Brush textBrush = new SolidBrush(UnitsTextColor);
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Font textFont = new(Font.Name, 9, FontStyle.Regular);
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// X-axis
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int minX = (int)(DpiFloat * 50 / 192),
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maxX = ClientRectangle.Height - (int)(DpiFloat * 40 / 192);
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for (double x = Math.Ceiling(MinVisibleGraph.x / axisScale) * axisScale; x <= MaxVisibleGraph.x; x += axisScale)
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{
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if (x == 0) x = 0; // Fixes -0
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Int2 screenPos = GraphSpaceToScreenSpace(new Float2(x, 0));
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if (screenPos.y < minX) screenPos.y = minX;
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else if (screenPos.y > maxX) screenPos.y = maxX;
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g.DrawString($"{x}", textFont, textBrush, screenPos.x, screenPos.y);
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}
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// Y-axis
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int minY = (int)(DpiFloat * 10 / 192);
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for (double y = Math.Ceiling(MinVisibleGraph.y / axisScale) * axisScale; y <= MaxVisibleGraph.y; y += axisScale)
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{
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if (y == 0) continue;
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Int2 screenPos = GraphSpaceToScreenSpace(new Float2(0, y));
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string result = y.ToString();
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int maxY = ClientRectangle.Width - (int)(DpiFloat * (textFont.Height * result.Length * 0.40 + 15) / 192);
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if (screenPos.x < minY) screenPos.x = minY;
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else if (screenPos.x > maxY) screenPos.x = maxY;
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g.DrawString($"{y}", textFont, textBrush, screenPos.x, screenPos.y);
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}
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}
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protected override void OnPaint(PaintEventArgs e)
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{
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Graphics g = e.Graphics;
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g.SmoothingMode = SmoothingMode.HighQuality;
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Brush background = new SolidBrush(BackgroundColor);
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g.FillRectangle(background, e.ClipRectangle);
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PaintGrid(g);
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PaintUnits(g);
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Point clientMousePos = PointToClient(Cursor.Position);
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Float2 graphMousePos = ScreenSpaceToGraphSpace(new(clientMousePos.X,
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clientMousePos.Y));
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// Draw the actual graphs.
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Pen[] graphPens = new Pen[ables.Count];
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for (int i = 0; i < ables.Count; i++)
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{
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IEnumerable<IGraphPart> lines = ables[i].GetItemsToRender(this);
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Brush graphBrush = new SolidBrush(ables[i].Color);
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Pen graphPen = new(graphBrush, DpiFloat * 3 / 192);
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graphPens[i] = graphPen;
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foreach (IGraphPart gp in lines) gp.Render(this, g, graphPen);
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}
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// Equation selection detection.
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// This system lets you select multiple graphs, and that's cool by me.
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if (ableDrag)
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{
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Font textFont = new(Font.Name, 8, FontStyle.Bold);
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for (int i = 0; i < ables.Count; i++)
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{
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if (ables[i].ShouldSelectGraphable(this, graphMousePos, 2.5))
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{
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Float2 selectedPoint = ables[i].GetSelectedPoint(this, graphMousePos);
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GraphUiCircle select = new(selectedPoint);
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Int2 textPos = GraphSpaceToScreenSpace(select.center);
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textPos.y -= (int)(DpiFloat * 32 / 192);
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string content = $"({selectedPoint.x:0.00}, {selectedPoint.y:0.00})";
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SizeF textSize = g.MeasureString(content, textFont);
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g.FillRectangle(background, new Rectangle(textPos.x, textPos.y,
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(int)textSize.Width, (int)textSize.Height));
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g.DrawString(content, textFont, graphPens[i].Brush, new Point(textPos.x, textPos.y));
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select.Render(this, g, graphPens[i]);
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}
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}
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}
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base.OnPaint(e);
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}
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protected override void OnResize(EventArgs e)
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{
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base.OnResize(e);
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Invalidate(false);
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}
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public void Graph(params Graphable[] newAbles)
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{
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ables.AddRange(newAbles);
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RegenerateMenuItems();
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Invalidate(false);
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}
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public void Ungraph(params Graphable[] ables)
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{
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this.ables.RemoveAll(x => ables.Contains(x));
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RegenerateMenuItems();
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Invalidate(false);
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}
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public bool IsGraphPointVisible(Float2 point)
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{
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Int2 pixelPos = GraphSpaceToScreenSpace(point);
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return pixelPos.x >= 0 && pixelPos.x < ClientRectangle.Width &&
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pixelPos.y >= 0 && pixelPos.y < ClientRectangle.Height;
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}
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private bool mouseDrag = false;
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private Int2 initialMouseLocation;
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private Float2 initialScreenCenter;
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private bool ableDrag = false;
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protected override void OnMouseDown(MouseEventArgs e)
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{
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if (!mouseDrag)
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{
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Point clientMousePos = PointToClient(Cursor.Position);
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Float2 graphMousePos = ScreenSpaceToGraphSpace(new(clientMousePos.X,
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clientMousePos.Y));
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foreach (Graphable able in Graphables)
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{
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if (able.ShouldSelectGraphable(this, graphMousePos, 1)) ableDrag = true;
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}
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if (ableDrag) Invalidate(false);
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}
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if (!ableDrag)
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{
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mouseDrag = true;
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initialMouseLocation = new Int2(Cursor.Position.X, Cursor.Position.Y);
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initialScreenCenter = ScreenCenter;
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}
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}
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protected override void OnMouseUp(MouseEventArgs e)
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{
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if (mouseDrag)
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{
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Int2 pixelDiff = new(initialMouseLocation.x - Cursor.Position.X,
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initialMouseLocation.y - Cursor.Position.Y);
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Float2 graphDiff = new(pixelDiff.x * ZoomLevel / Dpi.x, pixelDiff.y * ZoomLevel / Dpi.y);
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ScreenCenter = new(initialScreenCenter.x + graphDiff.x,
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initialScreenCenter.y + graphDiff.y);
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}
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mouseDrag = false;
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ableDrag = false;
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Invalidate(false);
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}
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protected override void OnMouseMove(MouseEventArgs e)
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{
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if (mouseDrag)
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{
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Int2 pixelDiff = new(initialMouseLocation.x - Cursor.Position.X,
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initialMouseLocation.y - Cursor.Position.Y);
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Float2 graphDiff = new(pixelDiff.x * ZoomLevel / Dpi.x, pixelDiff.y * ZoomLevel / Dpi.y);
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ScreenCenter = new(initialScreenCenter.x + graphDiff.x,
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initialScreenCenter.y + graphDiff.y);
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Invalidate(false);
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}
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else if (ableDrag) Invalidate(false);
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}
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protected override void OnMouseWheel(MouseEventArgs e)
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{
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ZoomLevel *= 1 - e.Delta * 0.00075; // Zoom factor.
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Invalidate(false);
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}
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private void ResetViewportButton_Click(object? sender, EventArgs e)
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{
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ScreenCenter = new Float2(0, 0);
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ZoomLevel = 1;
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Invalidate(false);
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}
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private void GraphColorPickerButton_Click(Graphable able)
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{
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GraphColorPickerForm picker = new(this, able)
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{
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StartPosition = FormStartPosition.Manual
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};
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picker.Location = new Point(Location.X + ClientRectangle.Width + 10,
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Location.Y + (ClientRectangle.Height - picker.ClientRectangle.Height) / 2);
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if (picker.Location.X + picker.Width > Screen.FromControl(this).WorkingArea.Width)
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{
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picker.StartPosition = FormStartPosition.WindowsDefaultLocation;
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}
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picker.TopMost = true;
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picker.ShowDialog();
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RegenerateMenuItems();
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}
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private void RegenerateMenuItems()
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{
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MenuElementsColors.DropDownItems.Clear();
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MenuElementsRemove.DropDownItems.Clear();
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MenuOperationsDerivative.DropDownItems.Clear();
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MenuOperationsIntegral.DropDownItems.Clear();
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MenuConvertEquation.DropDownItems.Clear();
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MenuConvertSlopeField.DropDownItems.Clear();
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MenuOperationsTranslate.DropDownItems.Clear();
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// At some point, we'll have a Convert To Column Table button,
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// but I'll need to make a form for the ranges when I do that.
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foreach (Graphable able in ables)
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{
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ToolStripMenuItem colorItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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colorItem.Click += (o, e) => GraphColorPickerButton_Click(able);
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MenuElementsColors.DropDownItems.Add(colorItem);
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ToolStripMenuItem removeItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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removeItem.Click += (o, e) => Ungraph(able);
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MenuElementsRemove.DropDownItems.Add(removeItem);
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if (able is IDerivable derivable)
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{
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ToolStripMenuItem derivativeItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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derivativeItem.Click += (o, e) => Graph(derivable.Derive());
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MenuOperationsDerivative.DropDownItems.Add(derivativeItem);
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}
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if (able is IIntegrable integrable)
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{
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ToolStripMenuItem integralItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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integralItem.Click += (o, e) => Graph(integrable.Integrate());
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MenuOperationsIntegral.DropDownItems.Add(integralItem);
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}
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if (able is IConvertEquation equConvert)
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{
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ToolStripMenuItem equItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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equItem.Click += (o, e) =>
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{
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if (equConvert.UngraphWhenConvertedToEquation) Ungraph(able);
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Graph(equConvert.ToEquation());
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};
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MenuConvertEquation.DropDownItems.Add(equItem);
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}
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if (able is IConvertSlopeField sfConvert)
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{
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ToolStripMenuItem sfItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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sfItem.Click += (o, e) =>
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{
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if (sfConvert.UngraphWhenConvertedToSlopeField) Ungraph(able);
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Graph(sfConvert.ToSlopeField(2));
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};
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MenuConvertSlopeField.DropDownItems.Add(sfItem);
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}
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if (able is ITranslatable translatable)
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{
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ToolStripMenuItem transItem = new()
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{
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ForeColor = able.Color,
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Text = able.Name
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};
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transItem.Click += (o, e) => ElementsOperationsTranslate_Click(able, translatable);
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MenuOperationsTranslate.DropDownItems.Add(transItem);
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}
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}
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}
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private void ButtonViewportSetZoom_Click(object? sender, EventArgs e)
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{
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SetZoomForm zoomer = new(this)
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{
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StartPosition = FormStartPosition.Manual,
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};
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zoomer.Location = new Point(Location.X + ClientRectangle.Width + 10,
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Location.Y + (ClientRectangle.Height - zoomer.ClientRectangle.Height) / 2);
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if (zoomer.Location.X + zoomer.Width > Screen.FromControl(this).WorkingArea.Width)
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{
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zoomer.StartPosition = FormStartPosition.WindowsDefaultLocation;
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}
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zoomer.ShowDialog();
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}
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private void ButtonViewportSetCenter_Click(object? sender, EventArgs e)
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{
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MessageBox.Show("TODO", "Set Center Position", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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private void ButtonViewportReset_Click(object? sender, EventArgs e)
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{
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ScreenCenter = new Float2(0, 0);
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ZoomLevel = 1;
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Invalidate(false);
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}
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private void ButtonViewportResetWindow_Click(object? sender, EventArgs e)
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{
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Location = initialWindowPos;
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Size = initialWindowSize;
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WindowState = FormWindowState.Normal;
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}
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private void MenuMiscCaches_Click(object? sender, EventArgs e)
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{
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ViewCacheForm cacheForm = new(this)
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{
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StartPosition = FormStartPosition.Manual
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};
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cacheForm.Location = new Point(Location.X + ClientRectangle.Width + 10,
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Location.Y + (ClientRectangle.Height - cacheForm.ClientRectangle.Height) / 2);
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if (cacheForm.Location.X + cacheForm.Width > Screen.FromControl(this).WorkingArea.Width)
|
|
{
|
|
cacheForm.StartPosition = FormStartPosition.WindowsDefaultLocation;
|
|
}
|
|
cacheForm.TopMost = true;
|
|
cacheForm.Show();
|
|
}
|
|
private void MiscMenuPreload_Click(object? sender, EventArgs e)
|
|
{
|
|
Float2 min = MinVisibleGraph, max = MaxVisibleGraph;
|
|
Float2 add = new(max.x - min.x, max.y - min.y);
|
|
add.x *= 0.75; // Expansion
|
|
add.y *= 0.75; // Screen + 75%
|
|
|
|
Float2 xRange = new(min.x - add.x, max.x + add.x),
|
|
yRange = new(min.y - add.y, max.y + add.y);
|
|
|
|
double step = ScreenSpaceToGraphSpace(new Int2(1, 0)).x
|
|
- ScreenSpaceToGraphSpace(new Int2(0, 0)).x;
|
|
step /= 10;
|
|
|
|
foreach (Graphable able in Graphables) able.Preload(xRange, yRange, step);
|
|
Invalidate(false);
|
|
}
|
|
|
|
private void ElementsOperationsTranslate_Click(Graphable ableRaw, ITranslatable ableTrans)
|
|
{
|
|
TranslateForm shifter = new(this, ableRaw, ableTrans)
|
|
{
|
|
StartPosition = FormStartPosition.Manual,
|
|
};
|
|
shifter.Location = new Point(Location.X + ClientRectangle.Width + 10,
|
|
Location.Y + (ClientRectangle.Height - shifter.ClientRectangle.Height) / 2);
|
|
if (shifter.Location.X + shifter.Width > Screen.FromControl(this).WorkingArea.Width)
|
|
{
|
|
shifter.StartPosition = FormStartPosition.WindowsDefaultLocation;
|
|
}
|
|
shifter.Show();
|
|
}
|
|
|
|
private static async void RunUpdateChecker()
|
|
{
|
|
try
|
|
{
|
|
HttpClient http = new();
|
|
HttpRequestMessage request = new(HttpMethod.Get, "https://api.github.com/repos/That-One-Nerd/Graphing/releases");
|
|
request.Headers.Add("User-Agent", "ThatOneNerd.Graphing-Update-Checker");
|
|
|
|
HttpResponseMessage result = await http.SendAsync(request);
|
|
if (!result.IsSuccessStatusCode)
|
|
{
|
|
Console.WriteLine($"Failed to check for updates.");
|
|
return;
|
|
}
|
|
|
|
JsonArray arr = JsonSerializer.Deserialize<JsonArray>(await result.Content.ReadAsStreamAsync())!;
|
|
JsonObject latest = arr[0]!.AsObject();
|
|
|
|
Version curVersion = Version.Parse(Assembly.GetAssembly(typeof(GraphForm))!.FullName!.Split(',')[1].Trim()[8..^2]);
|
|
Version newVersion = Version.Parse(latest["tag_name"]!.GetValue<string>());
|
|
|
|
if (newVersion > curVersion)
|
|
{
|
|
// Updates are required.
|
|
DialogResult button = MessageBox.Show(
|
|
$"A new update is available!\n{curVersion} -> {newVersion}\nWould you like to download the update?",
|
|
"Graphing Calculator Update", MessageBoxButtons.YesNo);
|
|
|
|
if (button == DialogResult.No) return;
|
|
|
|
string? project = UpdaterHelper.GetProjectPath();
|
|
if (project is null)
|
|
{
|
|
MessageBox.Show("Cannot find project root. You'll likely have to update manually.",
|
|
"Error running automatic updates.", MessageBoxButtons.OK,
|
|
MessageBoxIcon.Error);
|
|
return;
|
|
}
|
|
|
|
if (await UpdaterHelper.UsingNugetPackage(project))
|
|
{
|
|
Console.WriteLine($"Attempting to update via the NuGet Package Manager.");
|
|
bool status = await UpdaterHelper.UpdateProjectByNuget(latest["tag_name"]!.GetValue<string>(), project);
|
|
if (!status)
|
|
{
|
|
MessageBox.Show("Failed to update with the NuGet Package Manager. " +
|
|
"You'll likely have to update manually.",
|
|
"Error running automatic updates.", MessageBoxButtons.OK,
|
|
MessageBoxIcon.Error);
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Console.WriteLine($"Attempting to update via a GitHub asset download.");
|
|
bool status = await UpdaterHelper.UpdateProjectByGitHub(latest["tag_name"]!.GetValue<string>(), project);
|
|
if (status)
|
|
{
|
|
MessageBox.Show("Update ready. Restart the project to complete the update.");
|
|
}
|
|
else
|
|
{
|
|
MessageBox.Show("Failed to update with an automatic download. " +
|
|
"You'll likely have to update manually.",
|
|
"Error running automatic updates.", MessageBoxButtons.OK,
|
|
MessageBoxIcon.Error);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Console.WriteLine($"Up-to-date.");
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Console.WriteLine($"Failed to check for updates:\n{ex}");
|
|
}
|
|
}
|
|
}
|