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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "scatterinstancing_p.h"
ScatterInstancing::ScatterInstancing() {}
QByteArray ScatterInstancing::getInstanceBuffer(int *instanceCount)
{
if (m_dirty) {
m_instanceData.resize(0);
int instanceNumber = 0;
for (int i = 0; i < m_dataArray.size(); ++i) {
auto item = m_dataArray.at(i);
float x = item.position.x();
float y = item.position.y();
float z = item.position.z();
QVector4D customData{};
if (m_rangeGradient)
customData.setX(m_customData.at(i));
if (item.hide) {
// Setting the scale to zero breaks instanced picking.
item.scale = {0.001f, 0.001f, 0.001f};
}
auto entry = calculateTableEntryFromQuaternion({x, y, z},
item.scale,
item.rotation,
QColor(Qt::white),
customData);
m_instanceData.append(reinterpret_cast<char *>(&entry), sizeof(entry));
instanceNumber++;
}
m_instanceCount = instanceNumber;
m_dirty = false;
}
if (instanceCount)
*instanceCount = m_instanceCount;
return m_instanceData;
}
bool ScatterInstancing::rangeGradient() const
{
return m_rangeGradient;
}
void ScatterInstancing::setRangeGradient(bool newRangeGradient)
{
m_rangeGradient = newRangeGradient;
}
void ScatterInstancing::setTransparency(bool transparency)
{
setDepthSortingEnabled(transparency);
}
const QList<float> &ScatterInstancing::customData() const
{
return m_customData;
}
void ScatterInstancing::setCustomData(const QList<float> &newCustomData)
{
m_customData = newCustomData;
markDataDirty();
}
void ScatterInstancing::markDataDirty()
{
m_dirty = true;
markDirty();
}
const QList<DataItemHolder> &ScatterInstancing::dataArray() const
{
return m_dataArray;
}
void ScatterInstancing::setDataArray(const QList<DataItemHolder> &newDataArray)
{
m_dataArray = newDataArray;
markDataDirty();
}
void ScatterInstancing::hideDataItem(qsizetype index)
{
unhidePreviousDataItem();
Q_ASSERT(index < m_dataArray.size());
m_dataArray[index].hide = true;
m_previousHideIndex = index;
}
void ScatterInstancing::unhidePreviousDataItem()
{
if (m_previousHideIndex >= 0) {
m_dataArray[m_previousHideIndex].hide = false;
markDataDirty();
}
}
void ScatterInstancing::resetVisibilty()
{
for (auto &dih : m_dataArray)
dih.hide = false;
markDataDirty();
}
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