public override async Task Execute()
{
var config = AppConfig.GetConfiguration <Config>("CameraScript");
flyingAround = config.FlyingAround;
//uiControl = Context.RenderContext.UIControl;
if (camera == null)
{
// Near plane and Far plane are swapped in order to increase float precision for far distance as near distance is already having
// lots of precisions by the 1/z perspective projection
//camera = new Camera(new R32G32B32_Float(200, 0, 200), new R32G32B32_Float(0, 0, 200), 1.2f, 1280.0f / 720.0f, 4000000.0f, 10.0f);
var zNear = 10.0f;
var zFar = 4000000.0f;
if (Context.RenderContext.IsZReverse)
{
var temp = zNear;
zNear = zFar;
zFar = temp;
}
camera = new Camera(new Vector3(200, 0, 200), new Vector3(0, 0, 200), 1.2f, RenderContext.Width, RenderContext.Height, (float)RenderContext.Width / RenderContext.Height, zNear, zFar);
camera.Mode = CameraMode.Free;
}
Speed = config.Speed;
//useful when we need to debug something from a specific point of view (we can first get the WorldToCamera value using a breakpoint then set it below)
/*Matrix mat = new Matrix();
* mat.M11 = 0.0267117824f;
* mat.M12 = -0.9257705f;
* mat.M13 = -0.377141267f;
* mat.M14 = 0.0f;
* mat.M21 = -0.9996432f;
* mat.M22 = -0.024737807f;
* mat.M23 = -0.0100777093f;
* mat.M24 = 0.0f;
* mat.M31 = 0.0f;
* mat.M32 = 0.377275884f;
* mat.M33 = -0.926100969f;
* mat.M34 = 0.0f;
* mat.M41 = 531.524963f;
* mat.M42 = 501.754761f;
* mat.M43 = 989.462646f;
* mat.M44 = 1.0f;
* camera.WorldToCamera = mat;*/
//uiControl.MouseWheel += OnUiControlOnMouseWheel;
var st = new Stopwatch();
st.Start();
var viewParameters = Context.RenderContext.RenderPassPlugins.OfType <MainPlugin>().FirstOrDefault().ViewParameters;
Context.Scheduler.Add(() => AutoswitchCamera(Context));
var lastTime = DateTime.UtcNow;
var pauseTime = false;
while (true)
{
await Scheduler.Current.NextFrame();
var mousePosition = Context.InputManager.MousePosition;
if (Context.InputManager.IsMouseButtonPressed(MouseButton.Right))
{
camera.Mode = CameraMode.Free;
isModifyingPosition = true;
pitch = 0;
yaw = 0;
roll = 0;
if (camera.Mode == CameraMode.Free)
{
fixedFreeMatrix = camera.WorldToCamera;
}
else
{
fixedPosition = camera.Position;
}
}
if (Context.InputManager.IsMouseButtonDown(MouseButton.Right))
{
var deltaX = mousePosition.X - previousX;
var deltaY = mousePosition.Y - previousY;
if (isModifyingPosition)
{
yaw += deltaX * Speed / 1000.0f;
pitch += deltaY * Speed / 1000.0f;
if (camera.Mode == CameraMode.Target)
{
camera.Position = (Vector3)Vector3.Transform(fixedPosition, Matrix.RotationX(pitch) * Matrix.RotationZ(yaw));
Console.WriteLine(camera.Position);
}
else
{
camera.WorldToCamera = Camera.YawPitchRoll(camera.Position, fixedFreeMatrix, yaw, -pitch, roll);
}
//uiControl.Text = "" + camera.Mode;
viewChanged = true;
}
else if (isModifyingFov)
{
camera.FieldOfView += deltaX / 128.0f;
camera.FieldOfView = Math.Max(Math.Min(camera.FieldOfView, (float)Math.PI * 0.9f), 0.01f);
viewChanged = true;
}
}
if (Context.InputManager.IsMouseButtonReleased(MouseButton.Right))
{
isModifyingFov = false;
isModifyingPosition = false;
if (camera.Mode == CameraMode.Free && flyingAround)
{
camera.Mode = CameraMode.Target;
}
}
previousX = mousePosition.X;
previousY = mousePosition.Y;
if (Context.InputManager.IsKeyDown(Keys.LeftAlt) && Context.InputManager.IsKeyPressed(Keys.Enter))
{
Context.RenderContext.GraphicsDevice.IsFullScreen = !Context.RenderContext.GraphicsDevice.IsFullScreen;
}
if (Context.InputManager.IsKeyPressed(Keys.F2))
{
pauseTime = !pauseTime;
}
var currentTime = DateTime.UtcNow;
if (!pauseTime)
{
Context.CurrentTime += currentTime - lastTime;
viewParameters.Set(GlobalKeys.Time, (float)Context.CurrentTime.TotalSeconds);
var timeStep = (float)(currentTime - lastTime).TotalMilliseconds;
viewParameters.Set(GlobalKeys.TimeStep, timeStep);
}
// Set the pause variable for the rendering
Context.RenderContext.IsPaused = pauseTime;
lastTime = currentTime;
if (Context.InputManager.IsKeyPressed(Keys.Space))
{
// Fetch camera list
var cameras = Context.EntityManager.Entities
.Where(x => x.ContainsKey(CameraComponent.Key))
.Select(x => x.Get(CameraComponent.Key)).ToArray();
// Go to next camera
// If no camera or unset, index will be 0, so it will go to first one
int index = Array.IndexOf(cameras, TrackingCamera) + 1;
TrackingCamera = (index < cameras.Length) ? cameras[index] : null;
clock.Restart();
//flyingAround = !flyingAround;
//if (flyingAround)
//{
// fixedPosition = camera.Position;
// clock.Restart();
//}
}
if (TrackingCamera != null)
{
Matrix projection, worldToCamera;
// Overwrite near/far plane with our camera, as they are not reliable
TrackingCamera.NearPlane = camera.NearClipPlane;
TrackingCamera.FarPlane = camera.FarClipPlane;
TrackingCamera.Calculate(out projection, out worldToCamera);
viewParameters.Set(TransformationKeys.View, worldToCamera);
viewParameters.Set(TransformationKeys.Projection, projection);
// TODO: tracking camera doesn't have proper near/far plane values. Use mouse camera near/far instead.
viewParameters.Set(CameraKeys.NearClipPlane, camera.NearClipPlane);
viewParameters.Set(CameraKeys.FarClipPlane, camera.FarClipPlane);
viewParameters.Set(CameraKeys.FieldOfView, TrackingCamera.VerticalFieldOfView);
// Console.WriteLine("FOV:{0}", trackingCamera.VerticalFieldOfView);
viewParameters.Set(CameraKeys.ViewSize, new Vector2(camera.Width, camera.Height));
viewParameters.Set(CameraKeys.Aspect, TrackingCamera.AspectRatio);
viewParameters.Set(CameraKeys.FocusDistance, TrackingCamera.FocusDistance);
}
else
{
bool moved = false;
var localPosition = new Vector3(0, 0, 0);
if (Context.InputManager.IsKeyDown(Keys.Left) || Context.InputManager.IsKeyDown(Keys.A))
{
localPosition.X -= 1.0f;
moved = true;
}
if (Context.InputManager.IsKeyDown(Keys.Right) || Context.InputManager.IsKeyDown(Keys.D))
{
localPosition.X += 1.0f;
moved = true;
}
if (Context.InputManager.IsKeyDown(Keys.Up) || Context.InputManager.IsKeyDown(Keys.W))
{
localPosition.Y -= 1.0f;
moved = true;
}
if (Context.InputManager.IsKeyDown(Keys.Down) || Context.InputManager.IsKeyDown(Keys.S))
{
localPosition.Y += 1.0f;
moved = true;
}
if (Context.InputManager.IsKeyDown(Keys.R))
{
roll += 0.1f;
}
if (Context.InputManager.IsKeyDown(Keys.T))
{
roll -= 0.1f;
}
var moveSpeedFactor = Context.InputManager.IsKeyDown(Keys.LeftShift) || Context.InputManager.IsKeyDown(Keys.RightShift) ? 0.1f : 1.0f;
localPosition.Normalize();
localPosition *= (float)clock.ElapsedTicks * 1000.0f * MoveSpeed * moveSpeedFactor / Stopwatch.Frequency;
localVelocity = localVelocity * 0.9f + localPosition * 0.1f;
if (localVelocity.Length() > MoveSpeed * 0.001f)
{
if (camera.Mode == CameraMode.Target)
{
camera.Position = camera.Position + localVelocity;
}
else
{
var destVector = ((Vector3)camera.WorldToCamera.Column3);
var leftRightVector = Vector3.Cross(destVector, Vector3.UnitZ);
leftRightVector.Normalize();
var newPosition = camera.Position - destVector * localVelocity.Y;
newPosition = newPosition - leftRightVector * localVelocity.X;
camera.Position = newPosition;
}
viewChanged = true;
}
if (flyingAround)
{
camera.Position = (Vector3)Vector3.Transform(camera.Position, Matrix.RotationZ(clock.ElapsedMilliseconds * Speed / 10000.0f));
viewChanged = true;
}
if (Context.InputManager.IsKeyPressed(Keys.F))
{
camera.FieldOfView -= 0.1f;
viewChanged = true;
}
if (Context.InputManager.IsKeyPressed(Keys.G))
{
camera.FieldOfView += 0.1f;
viewChanged = true;
}
//if (viewChanged)
{
viewParameters.Set(TransformationKeys.View, camera.WorldToCamera);
viewParameters.Set(TransformationKeys.Projection, camera.Projection);
viewParameters.Set(CameraKeys.NearClipPlane, camera.NearClipPlane);
viewParameters.Set(CameraKeys.FarClipPlane, camera.FarClipPlane);
viewParameters.Set(CameraKeys.FieldOfView, camera.FieldOfView);
//Console.WriteLine("FOV:{0}", camera.FieldOfView);
viewParameters.Set(CameraKeys.ViewSize, new Vector2(camera.Width, camera.Height));
viewParameters.Set(CameraKeys.Aspect, camera.Aspect);
viewParameters.Set(CameraKeys.FocusDistance, 0.0f);
//Console.WriteLine("Camera: {0}", camera);
}
if (Context.InputManager.IsKeyPressed(Keys.I))
{
var worldToCamera = camera.WorldToCamera;
var target = (Vector3)worldToCamera.Column3;
Console.WriteLine("camera.Position = new R32G32B32_Float({0}f,{1}f,{2}f); camera.Target = camera.Position + new R32G32B32_Float({3}f, {4}f, {5}f);", camera.Position.X, camera.Position.Y, camera.Position.Z, target.X, target.Y, target.Z);
}
viewChanged = false;
clock.Restart();
}
}
}
