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| |
| #include "buttonaxisinput_p.h" |
| |
| #include <Qt3DInput/qbuttonaxisinput.h> |
| #include <Qt3DInput/qabstractphysicaldevice.h> |
| |
| #include <Qt3DInput/private/qabstractphysicaldevicebackendnode_p.h> |
| #include <Qt3DInput/private/qbuttonaxisinput_p.h> |
| #include <Qt3DInput/private/utils_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DInput { |
| |
| namespace Input { |
| |
| ButtonAxisInput::ButtonAxisInput() |
| : AbstractAxisInput() |
| , m_scale(0.0f) |
| , m_acceleration(-1.0f) |
| , m_deceleration(-1.0f) |
| , m_speedRatio(0.0f) |
| , m_lastUpdateTime(0) |
| { |
| } |
| |
| void ButtonAxisInput::cleanup() |
| { |
| m_scale = 0.0f; |
| m_buttons.clear(); |
| m_acceleration = -1.0f; |
| m_deceleration = -1.0f; |
| AbstractAxisInput::cleanup(); |
| } |
| |
| void ButtonAxisInput::updateSpeedRatio(qint64 currentTime, ButtonAxisInput::UpdateType type) |
| { |
| const float accel = (type == Accelerate) ? acceleration() : -deceleration(); |
| |
| // Was in nanoseconds, while acceleration will be in units per square seconds |
| const float delta = m_lastUpdateTime ? (currentTime - m_lastUpdateTime) / 1000000000.0f : 0.0f; |
| const float speedRatio = m_speedRatio + delta * accel; |
| |
| // Clamp it |
| m_speedRatio = qMax(0.0f, qMin(speedRatio, 1.0f)); |
| |
| // If we stopped, time to start over |
| if (type == Decelerate && m_speedRatio == 0.0f) |
| m_lastUpdateTime = 0; |
| else |
| m_lastUpdateTime = currentTime; |
| } |
| |
| void ButtonAxisInput::syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime) |
| { |
| AbstractAxisInput::syncFromFrontEnd(frontEnd, firstTime); |
| const QButtonAxisInput *node = qobject_cast<const QButtonAxisInput *>(frontEnd); |
| if (!node) |
| return; |
| |
| m_scale = node->scale(); |
| m_buttons = node->buttons(); |
| m_acceleration = node->acceleration(); |
| m_deceleration = node->deceleration(); |
| } |
| |
| namespace { |
| |
| bool anyOfRequiredButtonsPressed(const QVector<int> &buttons, QAbstractPhysicalDeviceBackendNode *physicalDeviceBackend) |
| { |
| bool validButtonWasPressed = false; |
| for (int button : buttons) { |
| if (physicalDeviceBackend->isButtonPressed(button)) { |
| validButtonWasPressed = true; |
| break; |
| } |
| } |
| return validButtonWasPressed; |
| } |
| |
| } // anonymous |
| |
| float ButtonAxisInput::process(InputHandler *inputHandler, qint64 currentTime) |
| { |
| if (!isEnabled()) |
| return 0.0f; |
| |
| if (m_buttons.isEmpty()) |
| return 0.0f; |
| |
| QAbstractPhysicalDeviceBackendNode *physicalDeviceBackend = Utils::physicalDeviceForInput(this, inputHandler); |
| if (!physicalDeviceBackend) |
| return 0.0f; |
| |
| // TO DO: Linear Curver for the progression of the scale value |
| if (anyOfRequiredButtonsPressed(m_buttons, physicalDeviceBackend)) |
| updateSpeedRatio(currentTime, ButtonAxisInput::Accelerate); |
| else if (m_speedRatio != 0.0f) |
| updateSpeedRatio(currentTime, ButtonAxisInput::Decelerate); |
| |
| return m_speedRatio * m_scale; |
| } |
| |
| } // Input |
| |
| } // Qt3DInput |
| |
| QT_END_NAMESPACE |