private void UnsubscribeCameraChanges()
{
if (_subscribedCamera == null)
{
return;
}
UnsubscribeViewportSizeChanged();
_subscribedCamera.CameraChanged -= CameraOnCameraChanged;
_subscribedCamera = null;
}
// When camera or Viewport3D size is changed we need to update the axis
private void SubscribeCameraChanges()
{
if (_subscribedCamera != null)
{
if (_subscribedCamera == Camera)
{
return;
}
UnsubscribeCameraChanges();
}
if (Camera != null)
{
Camera.CameraChanged += CameraOnCameraChanged;
_subscribedCamera = Camera;
SubscribeViewportSizeChanged();
}
}
private Ab3d.Cameras.BaseCamera GetSelectedCamera()
{
Ab3d.Cameras.BaseCamera selectedCamera = null;
if ((SceneCameraRadioButton.IsChecked ?? false) ||
(SideSceneCameraRadioButton.IsChecked ?? false) ||
(CannonCameraRadioButton.IsChecked ?? false))
{
selectedCamera = Camera1;
}
else if (FirstPersonCameraRadioButton.IsChecked ?? false)
{
selectedCamera = FirstPersonCamera1;
}
else if (ThirdPersonCameraRadioButton.IsChecked ?? false)
{
selectedCamera = ThirdPersonCameraCamera1;
}
return(selectedCamera);
}
public static SharpDX.Size2 GetPositionsSizeOnScreen(Point3DCollection positions, Transform3D transform, Ab3d.Cameras.BaseCamera camera)
{
double minX = double.MaxValue;
double maxX = double.MinValue;
double minY = double.MaxValue;
double maxY = double.MinValue;
var positionsCount = positions.Count;
bool useTransform = transform != null && !transform.Value.IsIdentity;
for (int i = 0; i < positionsCount; i++)
{
var onePoint = positions[i];
if (useTransform)
{
onePoint = transform.Transform(onePoint);
}
var pointOnScreen = camera.Point3DTo2D(onePoint);
if (pointOnScreen.X < minX)
{
minX = pointOnScreen.X;
}
if (pointOnScreen.X > maxX)
{
maxX = pointOnScreen.X;
}
if (pointOnScreen.Y < minY)
{
minY = pointOnScreen.Y;
}
if (pointOnScreen.Y > maxY)
{
maxY = pointOnScreen.Y;
}
}
var sizeOnScreen = new SharpDX.Size2((int)(maxX - minX), (int)(maxY - minY));
return(sizeOnScreen);
}