How to rotare a group

[Dario Concilio]

Hi,
Can I rotate a group of some RadDiagramShape?

My problem is when I put beside more shapes and I group theme. Afterthat I would rotate a group to 90°

 

[Martin Ivanov]

Hello Dario,

To achieve your requirement you can create a custom RotationService. I prepared a small example demonstrating a possible approach which you use. You can find it attached to my post. Please give it a try and let me know if it helps.

Here is the service implementation:

public class MyRotationService : RotationService
{
    private double? customAngle = null;

    public MyRotationService(RadDiagram diagram)
        : base(diagram)
    {
    }

    public void RotateGroup(IGroup group, double angle)
    {
        var groupItems = group.Items.OfType<IDiagramItem>();
        this.InitializeRotate(groupItems, 0, group.GetBounds());
        this.StartRotate(new Point());

        this.customAngle = angle;
        this.Rotate(new Point());
        this.customAngle = null;

        this.CompleteRotate(new Point());
    }

    protected override double CalculateRotationAngle(Point newPoint)
    {
        if (this.customAngle.HasValue)
            return this.customAngle.Value;
        else
            return base.CalculateRotationAngle(newPoint);
    }
}

You can register the service using the following code:

this.diagram.ServiceLocator.Register<IRotationService>(new MyRotationService(this.diagram));

And you can use the custom service like this:

var group = this.diagram.Groups.ElementAt(0);
MyRotationService rotationService = (MyRotationService)this.diagram.ServiceLocator.GetService<IRotationService>();

var groupedItems = group.Items.OfType<IDiagramItem>();
rotationService.RotateGroup(group, 90);

Regards,
Martin Ivanov
Progress Telerik

[Dario Concilio]

Thank you, Martin.

Exactly what I needed.

I have other issues but I have already specific post about "delete all items of group"