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Add rubber band select to scene editor viewport for selecting multiple actors.

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This commit is contained in:
Chandler Cox
2025-01-12 21:33:01 -06:00
parent f36d3a11ab
commit d0d5ad4657
1 changed files with 91 additions and 3 deletions
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94
Source/Editor/Viewport/MainEditorGizmoViewport.cs
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@@ -7,10 +7,12 @@ using FlaxEditor.Gizmo;
using FlaxEditor.GUI.ContextMenu;
using FlaxEditor.SceneGraph;
using FlaxEditor.Scripting;
using FlaxEditor.Tools;
using FlaxEditor.Viewport.Modes;
using FlaxEditor.Windows;
using FlaxEngine;
using FlaxEngine.GUI;
using FlaxEngine.Tools;
using Object = FlaxEngine.Object;
namespace FlaxEditor.Viewport
@@ -108,6 +110,10 @@ namespace FlaxEditor.Viewport
private readonly ViewportDebugDrawData _debugDrawData = new ViewportDebugDrawData(32);
private EditorSpritesRenderer _editorSpritesRenderer;
private bool _isRubberBandSpanning;
private Float2 _cachedStartingMousePosition;
private Rectangle _rubberBandRect;
/// <summary>
/// Drag and drop handlers
/// </summary>
@@ -287,6 +293,26 @@ namespace FlaxEditor.Viewport
var focusDistance = Mathf.Max(selectionBounds.Radius * 2d, 100d);
ViewPosition = selectionBounds.Center + (-ViewDirection * (focusDistance + _lockedFocusOffset));
}
// Dont allow rubber band selection when gizmo is controlling mouse, vertex painting mode, or cloth painting is enabled
if (_isRubberBandSpanning && (Gizmos.Active.IsControllingMouse || Gizmos.Active is VertexPaintingGizmo || Gizmos.Active is ClothPaintingGizmo) || IsControllingMouse || IsRightMouseButtonDown)
{
_isRubberBandSpanning = false;
}
// Start rubber band selection
if (IsLeftMouseButtonDown && !MouseDelta.IsZero && !_isRubberBandSpanning && !Gizmos.Active.IsControllingMouse && !IsControllingMouse && !IsRightMouseButtonDown)
{
_isRubberBandSpanning = true;
_cachedStartingMousePosition = _viewMousePos;
_rubberBandRect = new Rectangle(_cachedStartingMousePosition, Float2.Zero);
}
else if (_isRubberBandSpanning)
{
var size = _viewMousePos - _cachedStartingMousePosition;
_rubberBandRect.Width = _viewMousePos.X - _cachedStartingMousePosition.X;
_rubberBandRect.Height = _viewMousePos.Y - _cachedStartingMousePosition.Y;
}
}
/// <summary>
@@ -367,7 +393,16 @@ namespace FlaxEditor.Viewport
{
Gizmos[i].Draw(ref renderContext);
}
// Draw RubberBand for rect selection
if (_isRubberBandSpanning)
{
Render2D.Begin(context, target, targetDepth);
Render2D.FillRectangle(_rubberBandRect, Style.Current.Selection);
Render2D.DrawRectangle(_rubberBandRect, Style.Current.SelectionBorder);
Render2D.End();
}
// Draw selected objects debug shapes and visuals
if (DrawDebugDraw && (renderContext.View.Flags & ViewFlags.DebugDraw) == ViewFlags.DebugDraw)
{
@@ -582,9 +617,62 @@ namespace FlaxEditor.Viewport
// Skip if was controlling mouse or mouse is not over the area
if (_prevInput.IsControllingMouse || !Bounds.Contains(ref _viewMousePos))
return;
// Select rubberbanded rect actor nodes
if (_isRubberBandSpanning)
{
_isRubberBandSpanning = false;
if (_rubberBandRect.Width < 0 || _rubberBandRect.Height < 0)
{
// make sure we have a well-formed rectangle i.e. size is positive and X/Y is upper left corner
var size = _rubberBandRect.Size;
_rubberBandRect.X = Mathf.Min(_rubberBandRect.X, _rubberBandRect.X + _rubberBandRect.Width);
_rubberBandRect.Y = Mathf.Min(_rubberBandRect.Y, _rubberBandRect.Y + _rubberBandRect.Height);
size.X = Mathf.Abs(size.X);
size.Y = Mathf.Abs(size.Y);
_rubberBandRect.Size = size;
}
// Try to pick something with the current gizmo
Gizmos.Active?.Pick();
var view = new Ray(ViewPosition, ViewDirection);
List<SceneGraphNode> hits = new List<SceneGraphNode>();
// Todo: expose resolution to editor settings
var resolution = 100;
for (int i = 0; i < resolution; i++)
{
for (int j = 0; j < resolution; j++)
{
var point = new Float2(_rubberBandRect.Left + ((_rubberBandRect.Right - _rubberBandRect.Left) / resolution) * i, _rubberBandRect.Top + ((_rubberBandRect.Bottom - _rubberBandRect.Top) / resolution) * j);
var ray = ConvertMouseToRay(ref point);
var hit = SceneGraphRoot.RayCast(ref ray, ref view, out _);
if (hit != null && hit is ActorNode actorNode)
hits.Add(hit);
}
}
if (IsControlDown)
{
var newSelection = new List<SceneGraphNode>();
var currentSelection = _editor.SceneEditing.Selection;
newSelection.AddRange(currentSelection);
foreach (var hit in hits)
{
if (currentSelection.Contains(hit))
newSelection.Remove(hit);
else
newSelection.Add(hit);
}
Select(newSelection);
}
else
{
Select(hits);
}
}
else
{
// Try to pick something with the current gizmo
Gizmos.Active?.Pick();
}
// Keep focus
Focus();