void IMouseHandler.canvas_MouseDown(object sender, MouseEventArgs e)
{
this.lastBindingMouseButtons = this.BindingMouseButtons;
if ((e.Button & this.lastBindingMouseButtons) != MouseButtons.None)
{
var control = sender as Control;
this.SetBounds(control.Width, control.Height);
if (!cameraState.IsSameState(this.camera))
{
SetCamera(this.camera.Position, this.camera.Target, this.camera.UpVector);
}
this._startPosition = GetArcBallPosition(e.X, e.Y);
mouseDownFlag = true;
}
}
/// <summary>
/// 必须先调用<see cref="SetBounds"/>()方法。
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
public void MouseDown(int x, int y)
{
Debug.WriteLine("");
Debug.WriteLine("=================>MouseDown:", listenerName);
if (!cameraState.IsSameState(this.Camera))
{
SetCamera(this.Camera.Position, this.Camera.Target, this.Camera.UpVector);
Debug.WriteLine(string.Format(
"update camera state: {0}, {1}, {2}",
this.cameraState.position, this.cameraState.target, this.cameraState.up), listenerName);
}
this._startPosition = GetArcBallPosition(x, y);
Debug.WriteLine(string.Format("Start position: {0}", this._startPosition), listenerName);
MouseDownFlag = true;
Debug.WriteLine("-------------------MouseDown end.", listenerName);
}