/// <summary>
/// Attaches this component to a scene.
/// Be careful, this method gets called from a background thread of seeing#!
/// It may also be called from multiple scenes in parallel or simply withoud previous Detach call.
/// </summary>
/// <param name="manipulator">The manipulator of the scene we attach to.</param>
/// <param name="correspondingView">The view which attached this component.</param>
/// <returns></returns>
protected override PerSceneContext Attach(SceneManipulator manipulator, ViewInformation correspondingView)
{
PerSceneContext result = new PerSceneContext();
result.CameraDistance = this.CameraDistanceInitial;
result.CameraHVRotation = m_hvRotation;
return(result);
}
protected override PerSceneContext Attach(SceneManipulator manipulator, ViewInformation correspondingView)
{
PerSceneContext context = new PerSceneContext();
NamedOrGenericKey resCubeGeometry = manipulator.AddGeometry(new CubeType());
context.CubeObject = manipulator.AddGeneric(resCubeGeometry);
context.CubeObject.Color = Color4.RedColor;
return(context);
}
/// <summary>
/// Attaches this component to a scene.
/// Be careful, this method gets called from a background thread of seeing#!
/// It may also be called from multiple scenes in parallel or simply withoud previous Detach call.
/// </summary>
/// <param name="manipulator">The manipulator of the scene we attach to.</param>
/// <param name="correspondingView">The view which attached this component.</param>
protected override PerSceneContext Attach(SceneManipulator manipulator, ViewInformation correspondingView)
{
PerSceneContext context = new PerSceneContext();
switch (m_gradientDirection)
{
case GradientDirection.LeftToRight:
context.BrushResource = new LinearGradientBrushResource(
new System.Numerics.Vector2(0f, 0f),
new System.Numerics.Vector2(m_textureWidth, 0f),
new GradientStop[]
{
new GradientStop(m_colorStart, 0f),
new GradientStop(m_colorEnd, 1f)
});
break;
case GradientDirection.TopToBottom:
context.BrushResource = new LinearGradientBrushResource(
new System.Numerics.Vector2(0f, 0f),
new System.Numerics.Vector2(0f, m_textureHeight),
new GradientStop[]
{
new GradientStop(m_colorStart, 0f),
new GradientStop(m_colorEnd, 1f)
});
break;
case GradientDirection.Directional:
context.BrushResource = new LinearGradientBrushResource(
new System.Numerics.Vector2(0f, 0f),
new System.Numerics.Vector2(m_textureWidth, m_textureHeight),
new GradientStop[]
{
new GradientStop(m_colorStart, 0f),
new GradientStop(m_colorEnd, 1f)
});
break;
}
// Create the background layer if not available already
base.CreateLayerIfNotAvailable(manipulator);
// Create and add the background
context.BackgroundTextureKey = manipulator.AddResource(
() => new Direct2DSingleRenderTextureResource(context.BrushResource, m_textureWidth, m_textureHeight));
context.BackgroundPainter = new FullscreenTextureObject(context.BackgroundTextureKey);
context.BackgroundPainter.Scaling = 1.1f;
manipulator.Add(context.BackgroundPainter, DEFAULT_LAYER);
return(context);
}
/// <summary>
/// Update camera for keyboard input.
/// </summary>
private static void UpdateForKeyboard(
PerSceneContext componentContext, Camera3DBase actCamera,
KeyboardState actKeyboardState)
{
foreach (WinVirtualKey actKey in actKeyboardState.KeysDown)
{
switch (actKey)
{
case WinVirtualKey.Up:
case WinVirtualKey.W:
case WinVirtualKey.NumPad8:
componentContext.CameraHVRotation = componentContext.CameraHVRotation +
new Vector2(0f, SINGLE_ROTATION_V);
break;
case WinVirtualKey.Down:
case WinVirtualKey.S:
case WinVirtualKey.NumPad2:
componentContext.CameraHVRotation = componentContext.CameraHVRotation -
new Vector2(0f, SINGLE_ROTATION_V);
break;
case WinVirtualKey.Left:
case WinVirtualKey.A:
case WinVirtualKey.NumPad4:
componentContext.CameraHVRotation = componentContext.CameraHVRotation -
new Vector2(SINGLE_ROTATION_H, 0f);
break;
case WinVirtualKey.Right:
case WinVirtualKey.D:
case WinVirtualKey.NumPad6:
componentContext.CameraHVRotation = componentContext.CameraHVRotation +
new Vector2(SINGLE_ROTATION_H, 0f);
break;
case WinVirtualKey.Q:
case WinVirtualKey.NumPad3:
componentContext.CameraDistance = componentContext.CameraDistance * 1.05f;
break;
case WinVirtualKey.E:
case WinVirtualKey.NumPad9:
componentContext.CameraDistance = componentContext.CameraDistance * 0.95f;
break;
}
}
}
/// <summary>
/// Update camera for mouse input.
/// </summary>
private static void UpdateForMouse(
PerSceneContext componentContext, Camera3DBase actCamera,
MouseOrPointerState mouseState)
{
// Handle mouse move
if (mouseState.MoveDistanceDip != Vector2.Zero)
{
Vector2 moving = mouseState.MoveDistanceDip;
if (mouseState.IsButtonDown(MouseButton.Left) &&
mouseState.IsButtonDown(MouseButton.Right))
{
float multiplyer = 1.05f;
if (moving.Y < 0f)
{
multiplyer = 0.95f;
}
componentContext.CameraDistance = componentContext.CameraDistance * multiplyer;
}
else if (mouseState.IsButtonDown(MouseButton.Left) ||
mouseState.IsButtonDown(MouseButton.Right))
{
componentContext.CameraHVRotation = componentContext.CameraHVRotation +
new Vector2(
SINGLE_ROTATION_H * (moving.X / 4f),
SINGLE_ROTATION_V * (moving.Y / 4f));
}
}
// Handle mouse wheel
if (mouseState.WheelDelta != 0)
{
float multiplyer = 0.95f - (Math.Abs(mouseState.WheelDelta) / 1000f);
if (mouseState.WheelDelta < 0)
{
multiplyer = 1.05f + (Math.Abs(mouseState.WheelDelta) / 1000f);
}
componentContext.CameraDistance = componentContext.CameraDistance * multiplyer;
}
}
protected override void Detach(SceneManipulator manipulator, ViewInformation correspondingView, PerSceneContext context)
{
manipulator.Remove(context.CubeObject);
}
protected override void Update(SceneRelatedUpdateState updateState, ViewInformation correspondingView, PerSceneContext componentContext)
{
Camera3DBase actCamera = correspondingView.Camera;
if (actCamera == null)
{
return;
}
foreach (InputFrame actInputFrame in updateState.InputFrames)
{
foreach (var actInputState in actInputFrame.GetInputStates(correspondingView))
{
// Handle keyboard
KeyboardState actKeyboardState = actInputState as KeyboardState;
if (actKeyboardState != null)
{
UpdateForKeyboard(componentContext, actCamera, actKeyboardState);
continue;
}
// Handle mouse (or pointer)
MouseOrPointerState mouseState = actInputState as MouseOrPointerState;
if (mouseState != null)
{
UpdateForMouse(componentContext, actCamera, mouseState);
}
}
}
// Ensure that our values are in allowed ranges
float maxRad = EngineMath.RAD_90DEG * 0.99f;
float minRad = EngineMath.RAD_90DEG * -0.99f;
componentContext.CameraHVRotation.X = componentContext.CameraHVRotation.X % EngineMath.RAD_360DEG;
if (componentContext.CameraDistance < this.CameraDistanceMin)
{
componentContext.CameraDistance = this.CameraDistanceMin;
}
if (componentContext.CameraDistance > this.CameraDistanceMax)
{
componentContext.CameraDistance = this.CameraDistanceMax;
}
if (componentContext.CameraHVRotation.Y <= minRad)
{
componentContext.CameraHVRotation.Y = minRad;
}
if (componentContext.CameraHVRotation.Y >= maxRad)
{
componentContext.CameraHVRotation.Y = maxRad;
}
// Update camera position and rotation
Vector3 cameraOffset = Vector3.UnitX;
cameraOffset = Vector3.TransformNormal(
cameraOffset,
Matrix4x4.CreateRotationY(componentContext.CameraHVRotation.X));
cameraOffset = Vector3.TransformNormal(
cameraOffset,
Matrix4x4.CreateFromAxisAngle(Vector3.Cross(cameraOffset, Vector3.UnitY), componentContext.CameraHVRotation.Y));
Vector3 focusedLocation = this.GetFocusedLocation();
actCamera.Position = focusedLocation + cameraOffset * componentContext.CameraDistance;
actCamera.Target = focusedLocation;
}
/// <summary>
/// Detaches this component from a scene.
/// Be careful, this method gets called from a background thread of seeing#!
/// It may also be called from multiple scenes in parallel.
/// </summary>
/// <param name="manipulator">The manipulator of the scene we attach to.</param>
/// <param name="correspondingView">The view which attached this component.</param>
/// <param name="componentContext">A context variable containing all createded objects during call of Attach.</param>
protected override void Detach(SceneManipulator manipulator, ViewInformation correspondingView, PerSceneContext componentContext)
{
}
/// <summary>
/// Detaches the specified manipulator.
/// </summary>
/// <param name="manipulator">The manipulator.</param>
/// <param name="correspondingView">The corresponding view.</param>
/// <param name="context">The context.</param>
protected override void Detach(SceneManipulator manipulator, ViewInformation correspondingView, PerSceneContext context)
{
manipulator.Remove(context.BackgroundPainter);
manipulator.RemoveResource(context.BackgroundTextureKey);
GraphicsHelper.SafeDispose(ref context.BrushResource);
}
