C# Class Revit.SDK.Samples.NewHostedSweep.CS.TrackBall

This class is intent to convenience the geometry transformations. It can produce rotation and scale transformations.

Public Methods

Method	Description
OnKeyDown ( KeyEventArgs e ) : void	Arrows key down will also yield the rotation transform.
OnMouseDown ( float width, float height, MouseEventArgs e ) : void	Mouse down, initialize the transformation to identity.
OnMouseMove ( MouseEventArgs e ) : void	Mouse move with left button press will yield the rotation transform, with right button press will yield scale transform.

Method	Description
ProjectToTrackball ( double width, double height, Point point ) : XYZ	Project canvas 2D point to the track ball.
Track ( Point currentPosition ) : void	Yield the rotation transform according to current 2D point in canvas.
Zoom ( Point currentPosition ) : void	Yield the scale transform according to current 2D point in canvas.

Arrows key down will also yield the rotation transform.

public OnKeyDown ( KeyEventArgs e ) : void
e	System.Windows.Forms.KeyEventArgs
return	void

Mouse down, initialize the transformation to identity.

public OnMouseDown ( float width, float height, MouseEventArgs e ) : void
width	float	Canvas width
height	float	Canvas height
e	MouseEventArgs
return	void

Mouse move with left button press will yield the rotation transform, with right button press will yield scale transform.

public OnMouseMove ( MouseEventArgs e ) : void
e	MouseEventArgs
return	void