public override void UpdateViewport(int Width, int Height)
{
Screen.Width = Width;
Screen.Height = Height;
GL.Viewport(0, 0, Screen.Width, Screen.Height);
Screen.AspectRatio = Screen.Width / (double)Screen.Height;
Camera.HorizontalViewingAngle = 2.0 * Math.Atan(Math.Tan(0.5 * Camera.VerticalViewingAngle) * Screen.AspectRatio);
switch (CurrentViewportMode)
{
case ViewportMode.Scenery:
BackgroundObject b = Program.CurrentRoute.CurrentBackground as BackgroundObject;
double cd = b != null?Math.Max(Program.CurrentRoute.CurrentBackground.BackgroundImageDistance, b.ClipDistance) : Program.CurrentRoute.CurrentBackground.BackgroundImageDistance;
CurrentProjectionMatrix = Matrix4D.CreatePerspectiveFieldOfView(Camera.VerticalViewingAngle, Screen.AspectRatio, 0.5, cd);
break;
case ViewportMode.Cab:
CurrentProjectionMatrix = Matrix4D.CreatePerspectiveFieldOfView(Camera.VerticalViewingAngle, Screen.AspectRatio, 0.025, 50.0);
break;
}
Touch.UpdateViewport();
}
public virtual void UpdateViewport(int Width, int Height)
{
Screen.Width = Width;
Screen.Height = Height;
GL.Viewport(0, 0, Screen.Width, Screen.Height);
Screen.AspectRatio = Screen.Width / (double)Screen.Height;
Camera.HorizontalViewingAngle = 2.0 * Math.Atan(Math.Tan(0.5 * Camera.VerticalViewingAngle) * Screen.AspectRatio);
CurrentProjectionMatrix = Matrix4D.CreatePerspectiveFieldOfView(Camera.VerticalViewingAngle, Screen.AspectRatio, 0.2, 1000.0);
}
private void UpdateRightEyeSceneState()
{
Matrix4D perspectiveMatrix = Matrix4D.CreatePerspectiveFieldOfView(_rightEyeSceneState.Camera.FieldOfViewY,
_rightEyeSceneState.Camera.AspectRatio, _rightEyeSceneState.Camera.PerspectiveNearPlaneDistance,
_rightEyeSceneState.Camera.PerspectiveFarPlaneDistance);
Matrix4D viewMatrix = Matrix4D.LookAt(_rightEyeSceneState.Camera.Eye, _rightEyeSceneState.Camera.Target,
_rightEyeSceneState.Camera.Up);
// 外部更新SceneState的内部变换矩阵以方便VR设备变换矩阵更新
_rightEyeSceneState.PerspectiveMatrix = perspectiveMatrix;
_rightEyeSceneState.ViewMatrix = viewMatrix;
_rightEyeSceneState.HmdPoseMatrix = Matrix4D.Identity;
}
private void SetupVR(Ellipsoid globeShape)
{
// 创建一个默认相机以方便计算SceneState对象在VR模式下创建时需要外部提供的变换矩阵
Camera camera = new Camera();
Matrix4D perspectiveMatrix = Matrix4D.CreatePerspectiveFieldOfView(camera.FieldOfViewY,
camera.AspectRatio, camera.PerspectiveNearPlaneDistance, camera.PerspectiveFarPlaneDistance);
Matrix4D viewMatrix = Matrix4D.LookAt(camera.Eye, camera.Target, camera.Up);
_leftEyeSceneState = new SceneState(VREye.LeftEye, perspectiveMatrix, viewMatrix);
_leftEyeCamera = new CameraLookAtPoint(_leftEyeSceneState.Camera, _window, globeShape);
_leftEyeSceneState.HmdPoseMatrix = Matrix4D.Identity;
_rightEyeSceneState = new SceneState(VREye.RightEye, perspectiveMatrix, viewMatrix);
_rightEyeCamera = new CameraLookAtPoint(_rightEyeSceneState.Camera, _window, globeShape);
_rightEyeSceneState.HmdPoseMatrix = Matrix4D.Identity;
}