public Editor2D(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create a simple delegate graphics screen to handle figure rendering
var delegateGraphicsScreen = new DelegateGraphicsScreen(GraphicsService)
{
RenderCallback = Render,
};
// TODO - make sure we don't just want to put this under the controls screen?
// make sure to insert it on top?
GraphicsService.Screens.Insert(0, delegateGraphicsScreen);
_cameraObject = new Editor2DCameraObject(Services);
GameObjectService.Objects.Add(_cameraObject);
CreateGrid();
CreateGate();
// Add a game object which handles the picking:
GameObjectService.Objects.Add(new FigurePickerObject(GraphicsService, Scene, _cameraObject, DebugRenderer));
var test = new GridSettingsWindow();
UIScreen.Children.Add(test);
}
public FigurePickerObject(IGraphicsService graphicsService, Scene scene, Editor2DCameraObject cameraObject, DebugRenderer debugRenderer)
{
_cameraObject = cameraObject;
_scene = scene;
_debugRenderer = debugRenderer;
// Create a collision domain which manages all collision objects used for
// picking: the picking object and the collision objects for figure nodes.
_collisionDomain = new CollisionDomain(new CollisionDetection());
// Create the picking object:
// The picking object represents the mouse cursor or the reticle. Usually
// a ray is used, but in this example we want to use a cylinder/cone. This
// allows to check which objects within a certain radius of the reticle. A
// picking cylinder/cone is helpful for touch devices where the picking is
// done with an imprecise input method like the human finger.
// We want to pick objects in 10 pixel radius around the reticle. To determine
// the world space size of the required cylinder/cone, we can use the projection
// and the viewport.
const float pickingRadius = 0.25f;
var projection = _cameraObject.CameraNode.Camera.Projection;
var viewport = graphicsService.GraphicsDevice.Viewport;
Shape pickingShape;
if (projection is OrthographicProjection)
{
// Use cylinder for orthographic projections:
// The cylinder is centered at the camera position and reaches from the
// camera position to the camera far plane. A TransformedShape is used
// to rotate and translate the cylinder.
float radius = projection.Width / viewport.Width * pickingRadius;
pickingShape = new TransformedShape(
new GeometricObject(
new CylinderShape(radius, projection.Far),
new Pose(new Vector3F(0, 0, -projection.Far / 2), Matrix33F.CreateRotationX(ConstantsF.PiOver2))));
}
else
{
// Use cone for perspective projections:
// The cone tip is at the camera position and the cone base is at the
// camera far plane.
// Compute the radius at the far plane that projects to 10 pixels in screen space.
float radius = viewport.Unproject(
new Vector3(viewport.Width / 2.0f + pickingRadius, viewport.Height / 2.0f, 1),
(Matrix)_cameraObject.CameraNode.Camera.Projection.ToMatrix44F(),
Matrix.Identity,
Matrix.Identity).X;
// A transformed shape is used to rotate and translate the cone.
pickingShape = new TransformedShape(
new GeometricObject(
new ConeShape(radius, projection.Far),
new Pose(new Vector3F(0, 0, -projection.Far), Matrix33F.CreateRotationX(ConstantsF.PiOver2))));
}
// Create collision object with the picking shape.
_pickingObject = new CollisionObject(new GeometricObject(pickingShape, _cameraObject.CameraNode.PoseWorld));
}
public Editor2D(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Create a simple delegate graphics screen to handle figure rendering
var delegateGraphicsScreen = new DelegateGraphicsScreen(GraphicsService)
{
RenderCallback = Render,
};
// TODO - make sure we don't just want to put this under the controls screen?
// make sure to insert it on top?
GraphicsService.Screens.Insert(0, delegateGraphicsScreen);
_cameraObject = new Editor2DCameraObject(Services);
GameObjectService.Objects.Add(_cameraObject);
CreateGrid();
CreateGate();
// Add a game object which handles the picking:
GameObjectService.Objects.Add(new FigurePickerObject(GraphicsService, Scene, _cameraObject, DebugRenderer));
var test = new GridSettingsWindow();
UIScreen.Children.Add(test);
}
public FigurePickerObject(IGraphicsService graphicsService, Scene scene, Editor2DCameraObject cameraObject, DebugRenderer debugRenderer)
{
_cameraObject = cameraObject;
_scene = scene;
_debugRenderer = debugRenderer;
// Create a collision domain which manages all collision objects used for
// picking: the picking object and the collision objects for figure nodes.
_collisionDomain = new CollisionDomain(new CollisionDetection());
// Create the picking object:
// The picking object represents the mouse cursor or the reticle. Usually
// a ray is used, but in this example we want to use a cylinder/cone. This
// allows to check which objects within a certain radius of the reticle. A
// picking cylinder/cone is helpful for touch devices where the picking is
// done with an imprecise input method like the human finger.
// We want to pick objects in 10 pixel radius around the reticle. To determine
// the world space size of the required cylinder/cone, we can use the projection
// and the viewport.
const float pickingRadius = 0.25f;
var projection = _cameraObject.CameraNode.Camera.Projection;
var viewport = graphicsService.GraphicsDevice.Viewport;
Shape pickingShape;
if (projection is OrthographicProjection)
{
// Use cylinder for orthographic projections:
// The cylinder is centered at the camera position and reaches from the
// camera position to the camera far plane. A TransformedShape is used
// to rotate and translate the cylinder.
float radius = projection.Width / viewport.Width * pickingRadius;
pickingShape = new TransformedShape(
new GeometricObject(
new CylinderShape(radius, projection.Far),
new Pose(new Vector3F(0, 0, -projection.Far / 2), Matrix33F.CreateRotationX(ConstantsF.PiOver2))));
}
else
{
// Use cone for perspective projections:
// The cone tip is at the camera position and the cone base is at the
// camera far plane.
// Compute the radius at the far plane that projects to 10 pixels in screen space.
float radius = viewport.Unproject(
new Vector3(viewport.Width / 2.0f + pickingRadius, viewport.Height / 2.0f, 1),
(Matrix)_cameraObject.CameraNode.Camera.Projection.ToMatrix44F(),
Matrix.Identity,
Matrix.Identity).X;
// A transformed shape is used to rotate and translate the cone.
pickingShape = new TransformedShape(
new GeometricObject(
new ConeShape(radius, projection.Far),
new Pose(new Vector3F(0, 0, -projection.Far), Matrix33F.CreateRotationX(ConstantsF.PiOver2))));
}
// Create collision object with the picking shape.
_pickingObject = new CollisionObject(new GeometricObject(pickingShape, _cameraObject.CameraNode.PoseWorld));
}