public void SceneRateControlledFly(FScene scene, Camera cam, Vector2 curPos, RateControlInfo rc)
{
float dt = (FPlatform.RealTime() - rc.lastTime);
rc.lastTime = FPlatform.RealTime();
float delta_y = (curPos.y - rc.startPos.y);
rc.curSpeedY =
rc_update_speed(delta_y, rc.rampUpRadius, rc.deadZoneRadius, rc.maxAccel, rc.maxSpeed, dt, rc.curSpeedY);
float delta_x = (curPos.x - rc.startPos.x);
rc.curSpeedX =
rc_update_speed(delta_x, rc.rampUpRadius, rc.deadZoneRadius, rc.maxAccel, rc.maxSpeed, dt, rc.curSpeedX);
Vector3 forward, up;
if (rc.StayLevel)
{
forward = new Vector3(cam.transform.forward.x, 0.0f, cam.transform.forward.z);
forward.Normalize();
up = Vector3.up;
}
else
{
forward = cam.gameObject.transform.forward;
up = cam.gameObject.transform.up;
}
Vector3 curScenePos = scene.RootGameObject.transform.position;
Vector3 newScenePos = curScenePos - dt * rc.curSpeedY * forward;
scene.RootGameObject.transform.position = newScenePos;
scene.RootGameObject.transform.RotateAround(
cam.transform.position, up, -dt * rc.curSpeedX * rc.angleMultipler);
}
// in egocentric camera system the "eye" is moving up/down, which means the scene moves in opposite direction
public void SceneRateControlledEgogentricPan(FScene scene, fCamera cam, Vector2f curPos, RateControlInfo rc)
{
float dt = (FPlatform.RealTime() - rc.lastTime);
rc.lastTime = FPlatform.RealTime();
float delta_y = (curPos.y - rc.startPos.y);
rc.curSpeedY =
rc_update_speed(delta_y, rc.rampUpRadius, rc.deadZoneRadius, rc.maxAccel, rc.maxSpeed, dt, rc.curSpeedY);
float delta_x = (curPos.x - rc.startPos.x);
rc.curSpeedX =
rc_update_speed(delta_x, rc.rampUpRadius, rc.deadZoneRadius, rc.maxAccel, rc.maxSpeed, dt, rc.curSpeedX);
Frame3f camFrame = cam.GetWorldFrame();
Vector3f forward = camFrame.Z;
Vector3f up = camFrame.Y;
if (rc.StayLevel)
{
forward = new Vector3(forward.x, 0.0f, forward.z);
forward.Normalize();
up = Vector3.up;
}
Vector3f right = Vector3.Cross(up, forward);
Vector3f curScenePos = scene.RootGameObject.GetPosition();
Vector3f newScenePos = curScenePos - dt * (rc.curSpeedY * up + rc.curSpeedX * right);
scene.RootGameObject.SetPosition(newScenePos);
}
