//------------------------------------------------------------------------------------------------------------------------------------------------------
void BaseApplication::HandleSceneUpdate(StringHash eventType, VariantMap& eventData)
{
// Move the camera by touch, if the camera node is initialized by descendant sample class
if (touchEnabled_ && cameraNode_)
{
Input* input = GetSubsystem<Input>();
for (unsigned i = 0; i < input->GetNumTouches(); ++i)
{
TouchState* state = input->GetTouch(i);
if (!state->touchedElement_) // Touch on empty space
{
if (state->delta_.x_ ||state->delta_.y_)
{
Camera* camera = cameraNode_->GetComponent<Camera>();
if (!camera)
return;
Graphics* graphics = GetSubsystem<Graphics>();
yaw_ += TOUCH_SENSITIVITY * camera->GetFov() / graphics->GetHeight() * state->delta_.x_;
pitch_ += TOUCH_SENSITIVITY * camera->GetFov() / graphics->GetHeight() * state->delta_.y_;
// Construct new orientation for the camera scene node from yaw and pitch; roll is fixed to zero
cameraNode_->SetRotation(Quaternion(pitch_, yaw_, 0.0f));
}
else
{
// Move the cursor to the touch position
Cursor* cursor = GetSubsystem<UI>()->GetCursor();
if (cursor && cursor->IsVisible())
cursor->SetPosition(state->position_);
}
}
}
}
}
