File size: 7,276 Bytes
18a519f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 | using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
namespace Unity.VisualScripting
{
public abstract class UnitConnectionWidget<TConnection> : GraphElementWidget<FlowCanvas, TConnection>, IUnitConnectionWidget
where TConnection : class, IUnitConnection
{
protected UnitConnectionWidget(FlowCanvas canvas, TConnection connection) : base(canvas, connection) { }
#region Model
protected TConnection connection => element;
protected IUnitConnectionDebugData ConnectionDebugData => GetDebugData<IUnitConnectionDebugData>();
#endregion
#region Lifecycle
public override void BeforeFrame()
{
base.BeforeFrame();
if (showDroplets)
{
GraphGUI.UpdateDroplets(canvas, droplets, ConnectionDebugData.lastInvokeFrame, ref lastInvokeTime, ref dropTime);
}
}
#endregion
#region Positioning
public override IEnumerable<IWidget> positionDependencies
{
get
{
yield return canvas.Widget(connection.source);
yield return canvas.Widget(connection.destination);
}
}
protected override bool snapToGrid => false;
public Rect sourceHandlePosition { get; private set; }
public Rect destinationHandlePosition { get; private set; }
public Vector2 sourceHandleEdgeCenter { get; private set; }
public Vector2 destinationHandleEdgeCenter { get; private set; }
public Vector2 middlePosition;
private Rect _position;
private Rect _clippingPosition;
public override Rect position
{
get { return _position; }
set { }
}
public override Rect clippingPosition => _clippingPosition;
public override void CachePosition()
{
base.CachePosition();
sourceHandlePosition = canvas.Widget<IUnitPortWidget>(connection.source).handlePosition;
destinationHandlePosition = canvas.Widget<IUnitPortWidget>(connection.destination).handlePosition;
sourceHandleEdgeCenter = sourceHandlePosition.GetEdgeCenter(Edge.Right);
destinationHandleEdgeCenter = destinationHandlePosition.GetEdgeCenter(Edge.Left);
middlePosition = (sourceHandlePosition.center + destinationHandlePosition.center) / 2;
_position = new Rect
(
middlePosition.x,
middlePosition.y,
0,
0
);
_clippingPosition = _position.Encompass(sourceHandleEdgeCenter).Encompass(destinationHandleEdgeCenter);
}
#endregion
#region Drawing
protected virtual bool colorIfActive => true;
public abstract Color color { get; }
protected override bool dim
{
get
{
var dim = BoltCore.Configuration.dimInactiveNodes && !connection.destination.unit.Analysis<UnitAnalysis>(context).isEntered;
if (BoltCore.Configuration.dimIncompatibleNodes && canvas.isCreatingConnection)
{
dim = true;
}
return dim;
}
}
public override void DrawBackground()
{
base.DrawBackground();
BeginDim();
DrawConnection();
if (showDroplets)
{
DrawDroplets();
}
EndDim();
}
protected virtual void DrawConnection()
{
var color = this.color;
var sourceWidget = canvas.Widget<IUnitPortWidget>(connection.source);
var destinationWidget = canvas.Widget<IUnitPortWidget>(connection.destination);
var highlight = !canvas.isCreatingConnection && (sourceWidget.isMouseOver || destinationWidget.isMouseOver);
var willDisconnect = sourceWidget.willDisconnect || destinationWidget.willDisconnect;
if (willDisconnect)
{
color = UnitConnectionStyles.disconnectColor;
}
else if (highlight)
{
color = UnitConnectionStyles.highlightColor;
}
else if (colorIfActive)
{
if (EditorApplication.isPaused)
{
if (EditorTimeBinding.frame == ConnectionDebugData.lastInvokeFrame)
{
color = UnitConnectionStyles.activeColor;
}
}
else
{
color = Color.Lerp(UnitConnectionStyles.activeColor, color, (EditorTimeBinding.time - ConnectionDebugData.lastInvokeTime) / UnitWidget<IUnit>.Styles.invokeFadeDuration);
}
}
var thickness = 3;
GraphGUI.DrawConnection(color, sourceHandleEdgeCenter, destinationHandleEdgeCenter, Edge.Right, Edge.Left, null, Vector2.zero, UnitConnectionStyles.relativeBend, UnitConnectionStyles.minBend, thickness);
}
#endregion
#region Selecting
public override bool canSelect => false;
#endregion
#region Dragging
public override bool canDrag => false;
#endregion
#region Deleting
public override bool canDelete => true;
#endregion
#region Droplets
private readonly List<float> droplets = new List<float>();
private float dropTime;
private float lastInvokeTime;
private const float handleAlignmentMargin = 0.1f;
protected virtual bool showDroplets => true;
protected abstract Vector2 GetDropletSize();
protected abstract void DrawDroplet(Rect position);
protected virtual void DrawDroplets()
{
foreach (var droplet in droplets)
{
Vector2 position;
if (droplet < handleAlignmentMargin)
{
var t = droplet / handleAlignmentMargin;
position = Vector2.Lerp(sourceHandlePosition.center, sourceHandleEdgeCenter, t);
}
else if (droplet > 1 - handleAlignmentMargin)
{
var t = (droplet - (1 - handleAlignmentMargin)) / handleAlignmentMargin;
position = Vector2.Lerp(destinationHandleEdgeCenter, destinationHandlePosition.center, t);
}
else
{
var t = (droplet - handleAlignmentMargin) / (1 - 2 * handleAlignmentMargin);
position = GraphGUI.GetPointOnConnection(t, sourceHandleEdgeCenter, destinationHandleEdgeCenter, Edge.Right, Edge.Left, UnitConnectionStyles.relativeBend, UnitConnectionStyles.minBend);
}
var size = GetDropletSize();
using (LudiqGUI.color.Override(GUI.color * color))
{
DrawDroplet(new Rect(position.x - size.x / 2, position.y - size.y / 2, size.x, size.y));
}
}
}
#endregion
}
}
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