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// Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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
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