private bool GetCorrectElementPosition(out CanvasRect canvasRect, out Vector3 position)
{
canvasRect = new CanvasRect();
position = Vector3.zero;
if (!HelperSettings.GridSnap)
{
return(false);
}
canvasRect = CanvasUtil.GetCanvasRect(SelectedUIElement);
var rect = canvasRect.Rect;
var topLeft = new Vector3(rect.xMin, rect.yMax, 0);
var gridSizeX = HelperSettings.GridSize.x;
var gridSizeY = HelperSettings.GridSize.y;
var canvasHalfSize = SelectedRootCanvas.pixelRect.size * 0.5f;
var tx = Mathf.Clamp(Convert.ToInt32(Mathf.Round(topLeft.x / gridSizeX) * gridSizeX), -canvasHalfSize.x, canvasHalfSize.x);
var ty = Mathf.Clamp(Convert.ToInt32(Mathf.Round(topLeft.y / gridSizeY) * gridSizeY), -canvasHalfSize.y, canvasHalfSize.y);
position = new Vector3(tx, ty, 0);
return(true);
}
private void ChangeElementPositionFromGrid(RectTransform transform, CanvasRect canvasRect,
Vector3 targetPos)
{
targetPos = SelectedRootCanvas.transform.localToWorldMatrix.MultiplyPoint(targetPos);
targetPos.x -= canvasRect.PivotToSide.x;
targetPos.y -= canvasRect.PivotToSide.w;
SelectedUIElement.position = targetPos;
}
public static CanvasRect GetCanvasRect(RectTransform trans)
{
var output = new CanvasRect();
if (!TryGetRootCanvas(trans.gameObject, out var canvas))
{
return(output);
}
var position = trans.position;
var pivot = trans.pivot;
var sizeDelta = trans.sizeDelta;
var lossyScale = trans.lossyScale;
var offsetX1 = -(sizeDelta.x * pivot.x) * lossyScale.x;
var offsetY1 = -(sizeDelta.y * pivot.y) * lossyScale.y;
var offsetX2 = sizeDelta.x * (1f - pivot.x) * lossyScale.x;
var offsetY2 = sizeDelta.y * (1f - pivot.y) * lossyScale.y;
var x1 = position.x + offsetX1;
var x2 = position.x + offsetX2;
var y1 = position.y + offsetY1;
var y2 = position.y + offsetY2;
var worldToLocalMatrix = canvas.transform.worldToLocalMatrix;
Vector2 min = worldToLocalMatrix.MultiplyPoint(new Vector3(x1, y1, 0));
Vector2 max = worldToLocalMatrix.MultiplyPoint(new Vector3(x2, y2, 0));
var center = worldToLocalMatrix.MultiplyPoint(position);
output.Rect = Rect.MinMaxRect(min.x, min.y, max.x, max.y);
output.PivotToSide = new Vector4(offsetX1, offsetY1, offsetX2, offsetY2);
output.Center = center;
return(output);
}