/// <summary>
/// Calculate a ray between the camer and the selected point
/// </summary>
private void CalculateRay()
{
// Get the current touch location
currentLocation = touchPanelState.First();
// Apply the near point:
nearPoint.X = currentLocation.Position.X;
nearPoint.Y = currentLocation.Position.Y;
nearPoint.Z = 0f;
// And the far point
farPoint.X = currentLocation.Position.X;
farPoint.Y = currentLocation.Position.Y;
farPoint.Z = 1f;
// Unproject both to get the 2d point in a 3d screen projections.
nearPoint = Camera.Unproject(ref nearPoint);
farPoint = Camera.Unproject(ref farPoint);
// Now, we have a 3d point. We calculate the point direction
direction = farPoint - nearPoint;
// And normalized it.
direction.Normalize();
// Set the ray to the cached variable
ray.Direction = direction;
ray.Position = nearPoint;
}
/// <summary>
/// Calculate a ray between the camer and the selected point
/// </summary>
private void CalculateRay()
{
// Get the current touch location
currentLocation = touchPanelState.First();
//Labels.Add("MouseX", currentLocation.Position.X.ToString());
//Labels.Add("MouseY", currentLocation.Position.Y.ToString());
// Apply the near point:
nearPoint = Vector3.Zero;
farPoint = Vector3.Zero;
nearPoint.X = currentLocation.Position.X;
nearPoint.Y = currentLocation.Position.Y;
nearPoint.Z = 0f;
// And the far point
farPoint.X = currentLocation.Position.X;
farPoint.Y = currentLocation.Position.Y;
farPoint.Z = 1f;
//Labels.Add("Nearpoint", nearPoint.ToString());
//Labels.Add("Farpoint", farPoint.ToString());
Matrix world = Matrix.CreateTranslation(0, 0, 0);
// Unproject both to get the 2d point in a 3d screen projections.
nearPoint = Camera.Unproject(ref nearPoint);
farPoint = Camera.Unproject(ref farPoint);
// Now, we have a 3d point. We calculate the point direction
direction = farPoint - nearPoint;
// And normalized it.
direction.Normalize();
// Set the ray to the cached variable
ray.Direction = direction;
ray.Position = nearPoint;
this.line2.StartPoint = nearPoint;
this.line2.EndPoint = farPoint;
}
private void HandleInput(float amount)
{
input = WaveServices.Input;
isMouseConnected = input.MouseState.IsConnected;
isTouchPanelConnected = input.MouseState.IsConnected;
if (isMouseConnected)
{
isTouchPanelConnected = false;
}
if (input.KeyboardState.IsConnected)
{
keyboardState = input.KeyboardState;
if (keyboardState.W == ButtonState.Pressed)
{
// Manual inline: position += speed * forward;
position.X = position.X + (amount * speed * forward.X);
position.Y = position.Y + (amount * speed * forward.Y);
position.Z = position.Z + (amount * speed * forward.Z);
UpdateCameraPosition();
}
else if (keyboardState.S == ButtonState.Pressed)
{
// Manual inline: position -= speed * forward;
position.X = position.X - (amount * speed * forward.X);
position.Y = position.Y - (amount * speed * forward.Y);
position.Z = position.Z - (amount * speed * forward.Z);
UpdateCameraPosition();
}
if (keyboardState.A == ButtonState.Pressed)
{
// Manual inline: position -= speed * right;
position.X = position.X - (amount * speed * right.X);
position.Y = position.Y - (amount * speed * right.Y);
position.Z = position.Z - (amount * speed * right.Z);
UpdateCameraPosition();
}
else if (keyboardState.D == ButtonState.Pressed)
{
// Manual inline: position += speed * right;
position.X = position.X + (amount * speed * right.X);
position.Y = position.Y + (amount * speed * right.Y);
position.Z = position.Z + (amount * speed * right.Z);
UpdateCameraPosition();
}
}
if (isTouchPanelConnected || isMouseConnected)
{
if (isTouchPanelConnected)
{
currentTouchPanelState = input.TouchPanelState;
}
if (isMouseConnected)
{
currentMouseState = input.MouseState;
}
if ((isTouchPanelConnected && currentTouchPanelState.Count == 1) ||
(isMouseConnected && currentMouseState.RightButton == ButtonState.Pressed))
{
if (isTouchPanelConnected && currentTouchPanelState.Count == 1)
{
currentTouchLocation = currentTouchPanelState.First();
}
if ((isTouchPanelConnected && currentTouchLocation.State == TouchLocationState.Pressed)
||
(isMouseConnected && currentMouseState.RightButton == ButtonState.Pressed))
{
if (isDragging == false)
{
isDragging = true;
}
else
{
if (currentTouchPanelState.IsConnected)
{
xDifference = (currentTouchLocation.Position.X - lastTouchLocation.Position.X);
yDifference = (currentTouchLocation.Position.Y - lastTouchLocation.Position.Y);
}
if (isMouseConnected)
{
xDifference = (currentMouseState.X - lastMouseState.X);
yDifference = (currentMouseState.Y - lastMouseState.Y);
}
yaw = yaw - (xDifference * amount * rotationSpeed);
pitch = pitch - (yDifference * amount * rotationSpeed);
// Manual inline: forwardNormalizedVector = cameraRotation.Forward;
forwardNormalizedVector.X = cameraMatrixRotation.Forward.X;
forwardNormalizedVector.Y = cameraMatrixRotation.Forward.Y;
forwardNormalizedVector.Z = cameraMatrixRotation.Forward.Z;
forwardNormalizedVector.Normalize();
// Manual inline: rightNormalizedVector = cameraRotation.Right;
rightNormalizedVector.X = cameraMatrixRotation.Right.X;
rightNormalizedVector.Y = cameraMatrixRotation.Right.Y;
rightNormalizedVector.Z = cameraMatrixRotation.Right.Z;
rightNormalizedVector.Normalize();
// Manual inline: upNormalizedVector = cameraMatrixRotation.Up;
upNormalizedVector.X = cameraMatrixRotation.Up.X;
upNormalizedVector.Y = cameraMatrixRotation.Up.Y;
upNormalizedVector.Z = cameraMatrixRotation.Up.Z;
upNormalizedVector.Normalize();
Matrix.CreateFromAxisAngle(ref rightNormalizedVector, pitch, out tempRotationMatrix);
Matrix.Multiply(ref cameraMatrixRotation, ref tempRotationMatrix, out cameraMatrixRotation);
Matrix.CreateFromAxisAngle(ref upNormalizedVector, yaw, out tempRotationMatrix);
Matrix.Multiply(ref cameraMatrixRotation, ref tempRotationMatrix, out cameraMatrixRotation);
Matrix.CreateFromAxisAngle(ref forwardNormalizedVector, 0f, out tempRotationMatrix);
Matrix.Multiply(ref cameraMatrixRotation, ref tempRotationMatrix, out cameraMatrixRotation);
// Original code
/*
* cameraMatrixRotation.Forward.Normalize();
* cameraMatrixRotation.Right.Normalize();
* cameraMatrixRotation.Up.Normalize();
*
* cameraMatrixRotation *= Matrix.CreateFromAxisAngle(cameraMatrixRotation.Right, pitch);
* cameraMatrixRotation *= Matrix.CreateFromAxisAngle(cameraMatrixRotation.Up, yaw);
* cameraMatrixRotation *= Matrix.CreateFromAxisAngle(cameraMatrixRotation.Forward, 0f);
*/
yaw = 0.0f;
pitch = 0.0f;
// Manual inline: forward = cameraRotation.Forward;
forward.X = cameraMatrixRotation.Forward.X;
forward.Y = cameraMatrixRotation.Forward.Y;
forward.Z = cameraMatrixRotation.Forward.Z;
//// Manual inline: right = cameraRotation.Right;
right.X = cameraMatrixRotation.Right.X;
right.Y = cameraMatrixRotation.Right.Y;
right.Z = cameraMatrixRotation.Right.Z;
UpdateLookAt();
//Restore the current matrix rotation
cameraMatrixRotation = Matrix.Invert(Matrix.CreateLookAt(camera.Position, camera.LookAt, camera.UpVector));
}
}
lastTouchLocation = currentTouchLocation;
lastMouseState = currentMouseState;
}
else
{
isDragging = false;
}
}
}
