public void AddCommand(float camPos, float camDist)
{
ICommand distCommand;
ICommand posCommand;
if (lastCamPos == camPos) // No movement
{
posCommand = new NoCommand();
}
else if (lastCamPos < camPos) // Moved right
{
posCommand = new CameraMoveRight();
}
else // Moved left
{
posCommand = new CameraMoveLeft();
}
if (lastCamDist == camDist) // No movement
{
distCommand = new NoCommand();
}
else if (lastCamDist < camDist) // Zoomed out
{
distCommand = new CameraForward();
}
else // Zoomed in
{
distCommand = new CameraBackward();
}
properties.SetCommands(currentSlot, posCommand, distCommand);
currentSlot++;
}
void UpdateLookVec()
{
CameraForward = _lookAt - _eye;
CameraForwardMag = CameraForward.Length();
var lookAtNorm = CameraForward;
lookAtNorm.Normalize();
CameraForwardNormalized = lookAtNorm;
}
public void Update(KeyboardState keyboardState, TimeSpan frameTime)
{
var cameraMoveStep = (float)(CameraSpeed * frameTime.TotalMilliseconds);
//Forward/Backward
if (keyboardState.IsKeyDown(Keys.F))
{
CameraPosition -= CameraForward * cameraMoveStep;
}
if (keyboardState.IsKeyDown(Keys.B))
{
CameraPosition += CameraForward * cameraMoveStep;
}
//Left/Right
if (keyboardState.IsKeyDown(Keys.Left))
{
Vector3 perpendicularToForwardAndUp = Vector3.Cross(CameraUpVector, CameraForward);
perpendicularToForwardAndUp.Normalize();
CameraPosition -= perpendicularToForwardAndUp * cameraMoveStep;
}
if (keyboardState.IsKeyDown(Keys.Right))
{
Vector3 perpendicularToForwardAndUp = Vector3.Cross(CameraUpVector, CameraForward);
perpendicularToForwardAndUp.Normalize();
CameraPosition += perpendicularToForwardAndUp * cameraMoveStep;
}
//Up/Down
if (keyboardState.IsKeyDown(Keys.Up))
{
CameraPosition += CameraUpVector * cameraMoveStep;
}
if (keyboardState.IsKeyDown(Keys.Down))
{
CameraPosition -= CameraUpVector * cameraMoveStep;
}
//Look Up/Look Down (spogladanie gora i dol)
if (keyboardState.IsKeyDown(Keys.U))
{
var perpendicularToUpAndForward = Vector3.Cross(CameraUpVector, CameraForward);
perpendicularToUpAndForward.Normalize();
CameraForward = Vector3.Transform(CameraForward,
Matrix.CreateFromAxisAngle(perpendicularToUpAndForward, MathHelper.ToRadians(2 * cameraMoveStep)));
CameraUpVector = Vector3.Transform(CameraUpVector,
Matrix.CreateFromAxisAngle(perpendicularToUpAndForward, MathHelper.ToRadians(2 * cameraMoveStep)));
CameraForward.Normalize();
CameraUpVector.Normalize();
}
if (keyboardState.IsKeyDown(Keys.D))
{
var perpendicularToUpAndForward = Vector3.Cross(CameraUpVector, CameraForward);
perpendicularToUpAndForward.Normalize();
CameraForward = Vector3.Transform(CameraForward,
Matrix.CreateFromAxisAngle(perpendicularToUpAndForward, MathHelper.ToRadians(-2 * cameraMoveStep)));
CameraUpVector = Vector3.Transform(CameraUpVector,
Matrix.CreateFromAxisAngle(perpendicularToUpAndForward, MathHelper.ToRadians(-2 * cameraMoveStep)));
CameraForward.Normalize();
CameraUpVector.Normalize();
}
//Look Left/Look Right (rozlgladanie sie na boki)
if (keyboardState.IsKeyDown(Keys.R))
{
CameraForward = Vector3.Transform(CameraForward,
Matrix.CreateFromAxisAngle(CameraUpVector, MathHelper.ToRadians(-2 * cameraMoveStep)));
CameraForward.Normalize();
}
if (keyboardState.IsKeyDown(Keys.L))
{
CameraForward = Vector3.Transform(CameraForward,
Matrix.CreateFromAxisAngle(CameraUpVector, MathHelper.ToRadians(2 * cameraMoveStep)));
CameraForward.Normalize();
}
//Rotate
if (keyboardState.IsKeyDown(Keys.S))
{
CameraUpVector = Vector3.Transform(CameraUpVector,
Matrix.CreateFromAxisAngle(CameraForward, MathHelper.ToRadians(-2 * cameraMoveStep)));
CameraUpVector.Normalize();
}
if (keyboardState.IsKeyDown(Keys.A))
{
CameraUpVector = Vector3.Transform(CameraUpVector,
Matrix.CreateFromAxisAngle(CameraForward, MathHelper.ToRadians(2 * cameraMoveStep)));
CameraUpVector.Normalize();
}
}