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| |
| #include "axisaccumulator_p.h" |
| |
| #include <Qt3DInput/qaxis.h> |
| #include <Qt3DInput/private/inputmanagers_p.h> |
| #include <Qt3DInput/private/qaxisaccumulator_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DInput { |
| namespace Input { |
| |
| AxisAccumulator::AxisAccumulator() |
| : BackendNode(ReadWrite) |
| , m_sourceAxisId() |
| , m_sourceAxisType(QAxisAccumulator::Velocity) |
| , m_scale(1.0f) |
| , m_value(0.0f) |
| , m_velocity(0.0f) |
| { |
| } |
| |
| void AxisAccumulator::cleanup() |
| { |
| QBackendNode::setEnabled(false); |
| m_sourceAxisId = Qt3DCore::QNodeId(); |
| m_sourceAxisType = QAxisAccumulator::Velocity; |
| m_scale = 1.0f; |
| m_value = 0.0f; |
| } |
| |
| void AxisAccumulator::setValue(float value) |
| { |
| if (isEnabled() && value != m_value) |
| m_value = value; |
| } |
| |
| void AxisAccumulator::setVelocity(float velocity) |
| { |
| if (isEnabled() && velocity != m_velocity) |
| m_velocity = velocity; |
| } |
| |
| void AxisAccumulator::syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime) |
| { |
| BackendNode::syncFromFrontEnd(frontEnd, firstTime); |
| const QAxisAccumulator *node = qobject_cast<const QAxisAccumulator *>(frontEnd); |
| if (!node) |
| return; |
| |
| m_sourceAxisId = Qt3DCore::qIdForNode(node->sourceAxis()); |
| m_sourceAxisType = node->sourceAxisType(); |
| m_scale = node->scale(); |
| |
| if (firstTime) { |
| m_value = 0.f; |
| m_velocity = 0.f; |
| } |
| } |
| |
| void AxisAccumulator::stepIntegration(AxisManager *axisManager, float dt) |
| { |
| Axis *sourceAxis = axisManager->lookupResource(m_sourceAxisId); |
| if (!sourceAxis) |
| return; |
| |
| const float axisValue = sourceAxis->axisValue(); |
| float newVelocity = 0.0f; |
| float newValue = 0.0f; |
| switch (m_sourceAxisType) { |
| case QAxisAccumulator::Velocity: |
| newVelocity = axisValue * m_scale; |
| newValue = m_value + newVelocity * dt; |
| break; |
| |
| case QAxisAccumulator::Acceleration: |
| newVelocity = m_velocity + axisValue * m_scale * dt; |
| newValue = m_value + newVelocity * dt; |
| break; |
| } |
| setVelocity(newVelocity); |
| setValue(newValue); |
| } |
| |
| } // namespace Input |
| } // namespace Qt3DInput |
| |
| QT_END_NAMESPACE |