protected override void Draw()
{
// Ensure transforms are updated and clear; otherwise leave to Model3D tree
GraphicsDevice.Clear(ClearFlags.Target | ClearFlags.ZBuffer, new Color4(1.0f, 1.0f, 1.0f, 1.0f), 1.0f, 0);
GraphicsDevice.BeginScene();
float aspect = (float)GraphicsDevice.Viewport.Width / (float)GraphicsDevice.Viewport.Height;
switch (this.ViewPort3D.ProjectionType)
{
case ProjectionType.Perspective:
projection = Matrix.PerspectiveFovRH(fov, aspect, 0.01f, 10000f);
break;
case ProjectionType.Orthogonal:
float width = (float)this.Models.Select(m => m.Bounds.Maximum.X).Max() * aspect;
float height = (float)this.Models.Select(m => m.Bounds.Maximum.Y).Max();
projection = Matrix.OrthoRH(width / this.Scale, height / this.Scale, 1, 100);
break;
}
view = Matrix.LookAtRH(CameraPosition, CameraTarget, CameraUpVector);
world = Matrix.Identity;
// ENDTODO
GraphicsDevice.SetTransform(TransformState.Projection, ref projection);
GraphicsDevice.SetTransform(TransformState.View, ref view);
GraphicsDevice.SetTransform(TransformState.World, ref world);
foreach (Model3D model in this.Models)
{
model.Draw();
}
GraphicsDevice.EndScene();
GraphicsDevice.Present();
}
protected static void OnCameraChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ViewportImage viewportImage = ((ViewportImage)obj);
viewportImage.RequestRender();
viewportImage.view = Matrix.LookAtRH(viewportImage.CameraPosition, viewportImage.CameraTarget, viewportImage.CameraUpVector);
}
private void Draw()
{
_manager.Clear(Color.Black);
var context = _manager.Device.ImmediateContext;
var eyePosition = Vector3.Transform(new Vector3(0, (float)_distSum / 3f, 0), _viewRotation);
_view = Matrix.LookAtRH(eyePosition, new Vector3(0, 0, 0), Vector3.UnitZ);
var time = (float)_clock.Elapsed.TotalSeconds;
float dt = _timeDelta;
int stepsTodo = (int)Math.Floor((time - _prevGameSec) / dt);
while (stepsTodo-- > 0)
{
float r = Math.Max(0.05f, _position.Length());
Vector3 acc = _position * (-1f / r / r / r);
_velocity = _velocity + acc * dt;
_position = _position + _velocity * dt;
}
SetWorld(context, Matrix.Translation(_position * _scale) * Matrix.Translation(0, 0, 3));
_sphere.Draw();
SetWorld(context, Matrix.Translation(0f, 0f, -4f));
_plane.Draw();
SetWorld(context, Matrix.Translation(0, 0, 3));
_sun.Draw();
_manager.Present();
_prevGameSec = time;
}
