/* * Returns false if camera didn't move */ private bool ComputeCameraMovement() { var frameDurationFactor = (float)(App.Current.TimeSinceLastFrame) / FRAME_DURATION_AT_60_FPS; if (PositionDistance.Length() > STOP_DISTANCE_THRESHOLD || TargetDistance.Length() > STOP_DISTANCE_THRESHOLD || MoveVelocity.Length() > STOP_DISTANCE_THRESHOLD || _lookingAroundDelta.Length() > STOP_DISTANCE_THRESHOLD || _manipulatedByMouseWheel || _orbitDelta.Length() > 0.001f || _manipulatedByKeyboard) { if (_orbitDelta.Length() > 0.001f) { OrbitByAngle(_orbitDelta); _orbitDelta *= new Vector2(ORBIT_HORIZONTAL_FRICTION, ORBIT_VERTICAL_FRICTION) / frameDurationFactor; } if (MoveVelocity.Length() > MaxMoveVelocity) { MoveVelocity *= MaxMoveVelocity / MoveVelocity.Length(); } else if (!_manipulatedByKeyboard) { MoveVelocity *= (1 - _frictionKeyboardManipulation) / frameDurationFactor; } _cameraPositionGoal += MoveVelocity; _cameraTargetGoal += MoveVelocity + _lookingAroundDelta; _lookingAroundDelta = Vector3.Zero; PositionDistance *= CAMERA_MOVE_FRICTION / frameDurationFactor; TargetDistance *= CAMERA_MOVE_FRICTION / frameDurationFactor; _isTransitionActive = true; _manipulatedByMouseWheel = false; return(true); } else { StopTransitionOfPositionTarget(); _isTransitionActive = false; return(false); } }
private bool ManipulateCameraByKeyboard() { var frameDurationFactor = (float)(App.Current.TimeSinceLastFrame); Vector3 viewDir, sideDir, upDir; _showSceneControl.RenderSetup.CalcDirections(out viewDir, out sideDir, out upDir); var viewDirLength = viewDir.Length(); var initialVelocity = MoveVelocity.Length() < STOP_DISTANCE_THRESHOLD ? INITIAL_MOVE_VELOCITY : 0; var increaseAccelerationWithZoom = (_cameraPositionGoal - _cameraTargetGoal).Length() / 10f; var accelFactor = _cameraAcceleration * increaseAccelerationWithZoom; var interactionKeysPressedCount = 0; foreach (var key in _pressedKeys) { switch (key) { case Key.A: case Key.Left: MoveVelocity -= sideDir * (accelFactor + initialVelocity) * frameDurationFactor; interactionKeysPressedCount++; break; case Key.D: case Key.Right: MoveVelocity += sideDir * (accelFactor + initialVelocity) * frameDurationFactor; interactionKeysPressedCount++; break; case Key.W: case Key.Up: MoveVelocity += viewDir * (accelFactor + initialVelocity) / viewDirLength * frameDurationFactor; interactionKeysPressedCount++; break; case Key.S: case Key.Down: MoveVelocity -= viewDir * (accelFactor + initialVelocity) / viewDirLength * frameDurationFactor; interactionKeysPressedCount++; break; case Key.E: MoveVelocity += upDir * (accelFactor + initialVelocity) * frameDurationFactor; interactionKeysPressedCount++; break; case Key.X: MoveVelocity -= upDir * (accelFactor + initialVelocity) * frameDurationFactor; interactionKeysPressedCount++; break; case Key.F: MoveVelocity = Vector3.Zero; _cameraPositionGoal = new Vector3(0, 0, DEFAULT_CAMERA_POSITION_Z); _cameraTargetGoal = new Vector3(0, 0, 0f); interactionKeysPressedCount++; break; // Center Camera case Key.C: var delta = _showSceneControl.RenderSetup.TransformGizmo.IsGizmoActive ? _showSceneControl.RenderSetup.TransformGizmo.GizmoToWorld.TranslationVector - _cameraTargetGoal : -_cameraTargetGoal; _cameraTargetGoal += delta; _cameraPositionGoal += delta; interactionKeysPressedCount++; break; } } return(interactionKeysPressedCount > 0); }