/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
m_spriteBatch = new SpriteBatch(GraphicsDevice);
m_camera = new OrbitCamera(this);
m_camera.Update(0);
m_World = Matrix.Identity;
CurPrimitive = null;
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
m_spriteBatch = new SpriteBatch(GraphicsDevice);
m_camera = new OrbitCamera(this);
m_camera.Update(0);
m_World = Matrix.Identity;
CurPrimitive = null;
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
//Inputs
var ms = Mouse.GetState();
var ks = Keyboard.GetState();
//Control Mouse pos under Game Window
bool bUnderWindows = false;
if (Window.ClientBounds.Contains(ms.Position))
{
bUnderWindows = true;
}
//Process mouse events
if (bUnderWindows)
{
//LMouse Down
if (ms.LeftButton == ButtonState.Pressed && m_prevMouseState.LeftButton == ButtonState.Released)
{
m_nStartDragX = ms.X;
m_nStartDragY = ms.Y;
if (ks.IsKeyDown(Keys.LeftControl) == true)
{
m_bZoomingCamera = true;
}
else
{
m_bDraggingCamera = true;
}
}
//LMouse Up
if (ms.LeftButton == ButtonState.Released && m_prevMouseState.LeftButton == ButtonState.Pressed)
{
m_bDraggingCamera = false;
m_bZoomingCamera = false;
}
//Mouse Move and camera dragging
if (m_bDraggingCamera == true)
{
float turnSpeed = 8f;
float offsetX = ((ms.X - m_nStartDragX) * turnSpeed * 0.001f); // pitch degree
float offsetY = ((ms.Y - m_nStartDragY) * turnSpeed * 0.001f); // yaw degree
var a = m_camera.AngleRad;
a.X -= offsetY;
a.Y -= offsetX;
a.Y = MathHelper.Clamp(a.Y, 0, MathHelper.Pi * 2);
a.X = MathHelper.Clamp(a.X, -(MathHelper.PiOver2 - 0.1f), (MathHelper.PiOver2 - 0.1f));
m_camera.AngleRad = a;
m_nStartDragX = ms.X;
m_nStartDragY = ms.Y;
}
//Mouse Move and camera zooming
if (m_bZoomingCamera == true)
{
float speed = 8f;
float offsetY = ((ms.Y - m_nStartDragY) * speed * 0.001f);
m_camera.TargetDistance += offsetY;
m_camera.TargetDistance = MathHelper.Clamp(m_camera.TargetDistance, 1.0f, 10);
m_nStartDragY = ms.Y;
}
//Mouse Wheel
var wheelDelta = m_prevMouseState.ScrollWheelValue - ms.ScrollWheelValue;
if (wheelDelta != 0)
{
m_camera.TargetDistance += (wheelDelta / 100.0f);
m_camera.TargetDistance = MathHelper.Clamp(m_camera.TargetDistance, 1.0f, 10);
}
m_prevMouseState = ms;
}
//Update Camera Matrices
m_camera.Update(0);
//Update Model World Matrice
if (m_bDraggingCamera == false)
{
m_fmodelRotation += (float)gameTime.ElapsedGameTime.TotalMilliseconds / 1000.0f;
}
m_World = Matrix.CreateRotationX(m_fmodelRotation) * Matrix.CreateRotationY(m_fmodelRotation) * Matrix.CreateRotationZ(m_fmodelRotation);
base.Update(gameTime);
}
