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hid/gesture: Factor out last gesture retrieval into its own function
Deduplicates a commonly repeated expression.
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@ -154,8 +154,8 @@ void Controller_Gesture::UpdateGestureSharedMemory(u8* data, std::size_t size,
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void Controller_Gesture::NewGesture(GestureProperties& gesture, TouchType& type,
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Attribute& attributes) {
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const auto& last_entry =
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shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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const auto& last_entry = GetLastGestureEntry();
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gesture.detection_count++;
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type = TouchType::Touch;
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@ -168,8 +168,7 @@ void Controller_Gesture::NewGesture(GestureProperties& gesture, TouchType& type,
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void Controller_Gesture::UpdateExistingGesture(GestureProperties& gesture, TouchType& type,
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f32 time_difference) {
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const auto& last_entry =
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shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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const auto& last_entry = GetLastGestureEntry();
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// Promote to pan type if touch moved
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for (size_t id = 0; id < MAX_POINTS; id++) {
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@ -204,8 +203,8 @@ void Controller_Gesture::UpdateExistingGesture(GestureProperties& gesture, Touch
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void Controller_Gesture::EndGesture(GestureProperties& gesture,
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GestureProperties& last_gesture_props, TouchType& type,
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Attribute& attributes, f32 time_difference) {
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const auto& last_entry =
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shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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const auto& last_entry = GetLastGestureEntry();
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if (last_gesture_props.active_points != 0) {
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switch (last_entry.type) {
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case TouchType::Touch:
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@ -255,10 +254,9 @@ void Controller_Gesture::UpdatePanEvent(GestureProperties& gesture,
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GestureProperties& last_gesture_props, TouchType& type,
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f32 time_difference) {
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auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
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const auto& last_entry =
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shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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cur_entry.delta = gesture.mid_point - last_entry.pos;
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const auto& last_entry = GetLastGestureEntry();
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cur_entry.delta = gesture.mid_point - last_entry.pos;
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cur_entry.vel_x = static_cast<f32>(cur_entry.delta.x) / time_difference;
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cur_entry.vel_y = static_cast<f32>(cur_entry.delta.y) / time_difference;
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last_pan_time_difference = time_difference;
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@ -284,8 +282,7 @@ void Controller_Gesture::EndPanEvent(GestureProperties& gesture,
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GestureProperties& last_gesture_props, TouchType& type,
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f32 time_difference) {
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auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
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const auto& last_entry =
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shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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const auto& last_entry = GetLastGestureEntry();
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cur_entry.vel_x =
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static_cast<f32>(last_entry.delta.x) / (last_pan_time_difference + time_difference);
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cur_entry.vel_y =
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@ -309,8 +306,8 @@ void Controller_Gesture::EndPanEvent(GestureProperties& gesture,
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void Controller_Gesture::SetSwipeEvent(GestureProperties& gesture,
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GestureProperties& last_gesture_props, TouchType& type) {
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auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
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const auto& last_entry =
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shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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const auto& last_entry = GetLastGestureEntry();
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type = TouchType::Swipe;
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gesture = last_gesture_props;
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force_update = true;
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@ -353,6 +350,14 @@ std::optional<std::size_t> Controller_Gesture::GetUnusedFingerID() const {
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return std::nullopt;
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}
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Controller_Gesture::GestureState& Controller_Gesture::GetLastGestureEntry() {
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return shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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}
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const Controller_Gesture::GestureState& Controller_Gesture::GetLastGestureEntry() const {
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return shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
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}
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std::size_t Controller_Gesture::UpdateTouchInputEvent(
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const std::tuple<float, float, bool>& touch_input, std::size_t finger_id) {
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const auto& [x, y, pressed] = touch_input;
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@ -162,7 +162,11 @@ private:
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TouchType& type);
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// Returns an unused finger id, if there is no fingers available std::nullopt is returned.
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std::optional<size_t> GetUnusedFingerID() const;
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[[nodiscard]] std::optional<size_t> GetUnusedFingerID() const;
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// Retrieves the last gesture entry, as indicated by shared memory indices.
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[[nodiscard]] GestureState& GetLastGestureEntry();
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[[nodiscard]] const GestureState& GetLastGestureEntry() const;
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/**
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* If the touch is new it tries to assign a new finger id, if there is no fingers available no
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