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Better calculation for moving ui by the widgets.

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Chandler Cox
2025-11-29 15:57:35 -06:00
parent 09964df198
commit ab22b88a53
1 changed files with 34 additions and 5 deletions
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39
Source/Editor/Gizmo/UIEditorGizmo.cs
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@@ -387,18 +387,47 @@ namespace FlaxEditor
if (_mouseMovesWidget && _activeWidget.UIControl)
{
// Calculate transform delta
var resizeAxisAbs = _activeWidget.ResizeAxis.Absolute;
var resizeAxisPos = Float2.Clamp(_activeWidget.ResizeAxis, Float2.Zero, Float2.One);
var resizeAxisNeg = Float2.Clamp(-_activeWidget.ResizeAxis, Float2.Zero, Float2.One);
var delta = location - _mouseMovesPos;
// TODO: scale/size snapping?
delta *= resizeAxisAbs;
// Resize control via widget
var moveLocation = _mouseMovesPos + delta;
var control = _activeWidget.UIControl.Control;
var uiControlDelta = GetControlDelta(control, ref _mouseMovesPos, ref moveLocation);
control.Size += uiControlDelta * resizeAxisPos - uiControlDelta * resizeAxisNeg;
// Transform delta to control local space
var rotation = control.Rotation * Mathf.DegreesToRadians; // TODO: use total parent rotation
var cos = Mathf.Cos(rotation);
var sin = Mathf.Sin(rotation);
var localDeltaX = uiControlDelta.X * cos + uiControlDelta.Y * sin;
var localDeltaY = uiControlDelta.Y * cos - uiControlDelta.X * sin;
var localDelta = new Float2(localDeltaX, localDeltaY);
localDelta *= _activeWidget.ResizeAxis.Absolute;
// Calculate size change
var resizeAxisPos = Float2.Clamp(_activeWidget.ResizeAxis, Float2.Zero, Float2.One);
var resizeAxisNeg = Float2.Clamp(-_activeWidget.ResizeAxis, Float2.Zero, Float2.One);
var dSizeScaled = localDelta * resizeAxisPos - localDelta * resizeAxisNeg;
var scale = control.Scale;
var dSize = new Float2(
Mathf.Abs(scale.X) > Mathf.Epsilon ? dSizeScaled.X / scale.X : 0,
Mathf.Abs(scale.Y) > Mathf.Epsilon ? dSizeScaled.Y / scale.Y : 0);
// Calculate pivot offset to keep the opposite edge stationary
var pivotOffset = Float2.Zero;
if (Mathf.Abs(dSizeScaled.X) > Mathf.Epsilon)
pivotOffset.X = (_activeWidget.ResizeAxis.X < 0 ? control.Pivot.X - 1.0f : control.Pivot.X) * dSizeScaled.X;
if (Mathf.Abs(dSizeScaled.Y) > Mathf.Epsilon)
pivotOffset.Y = (_activeWidget.ResizeAxis.Y < 0 ? control.Pivot.Y - 1.0f : control.Pivot.Y) * dSizeScaled.Y;
// Transform pivot offset back to parent space
var dLocationX = pivotOffset.X * cos - pivotOffset.Y * sin;
var dLocationY = pivotOffset.X * sin + pivotOffset.Y * cos;
var dLocation = new Float2(dLocationX, dLocationY);
// Apply changes
control.Size += dSize;
control.LocalLocation += dLocation;
// Don't move if layout doesn't allow it
if (control.Parent != null)