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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qquick3dparticleshapedatautils_p.h"
#include <QtCore/QRect>
#include <QtGui/QVector2D>
#include <QtGui/QVector3D>
#include <QtGui/QVector4D>
#include <QtGui/QQuaternion>
#include <QtGui/QColor>
QT_BEGIN_NAMESPACE
// This file contains useful methods to read & write shape
// CBOR binary files and understand the format.
// Read property 'type' value from CBOR and return it as QVariant.
QVariant QQuick3DParticleShapeDataUtils::readValue(QCborStreamReader &reader, QMetaType::Type type)
{
switch (type) {
case QMetaType::Bool: {
bool b = reader.toBool();
reader.next();
return QVariant(b);
}
case QMetaType::Int: {
int i = reader.toInteger();
reader.next();
return QVariant(i);
}
case QMetaType::Float: {
float f = reader.toFloat();
reader.next();
return QVariant(f);
}
case QMetaType::Double: {
double d = reader.toDouble();
reader.next();
return QVariant(d);
}
case QMetaType::QString: {
QString s = reader.readString().data;
return QVariant(s);
}
case QMetaType::QVector2D: {
QVector2D v;
v.setX(reader.toFloat());
reader.next();
v.setY(reader.toFloat());
reader.next();
return QVariant(v);
}
case QMetaType::QVector3D: {
QVector3D v;
v.setX(reader.toFloat());
reader.next();
v.setY(reader.toFloat());
reader.next();
v.setZ(reader.toFloat());
reader.next();
return QVariant(v);
}
case QMetaType::QVector4D: {
QVector4D v;
v.setX(reader.toFloat());
reader.next();
v.setY(reader.toFloat());
reader.next();
v.setZ(reader.toFloat());
reader.next();
v.setW(reader.toFloat());
reader.next();
return QVariant(v);
}
case QMetaType::QQuaternion: {
QQuaternion q;
q.setScalar(reader.toFloat());
reader.next();
q.setX(reader.toFloat());
reader.next();
q.setY(reader.toFloat());
reader.next();
q.setZ(reader.toFloat());
reader.next();
return QVariant(q);
}
case QMetaType::QColor: {
QColor c;
c.setRed(reader.toInteger());
reader.next();
c.setGreen(reader.toInteger());
reader.next();
c.setBlue(reader.toInteger());
reader.next();
c.setAlpha(reader.toInteger());
reader.next();
return QVariant(c);
}
case QMetaType::QRect: {
QRect r;
r.setX(reader.toInteger());
reader.next();
r.setY(reader.toInteger());
reader.next();
r.setWidth(reader.toInteger());
reader.next();
r.setHeight(reader.toInteger());
reader.next();
return QVariant(r);
}
default: {
qWarning() << "Property type not handled:" << type;
}
}
return QVariant();
}
// Read a string from CBOR.
QString QQuick3DParticleShapeDataUtils::readString(QCborStreamReader &reader)
{
QString result;
auto r = reader.readString();
while (r.status == QCborStreamReader::Ok) {
result += r.data;
r = reader.readString();
}
if (r.status == QCborStreamReader::Error) {
// handle error condition
result.clear();
}
return result;
}
// Read a real (double or float) from CBOR.
double QQuick3DParticleShapeDataUtils::readReal(QCborStreamReader &reader)
{
double result = 0.0;
if (reader.isDouble()) {
result = reader.toDouble();
reader.next();
} else if (reader.isFloat()) {
result = reader.toFloat();
reader.next();
}
return result;
}
// Read shape file header and return the version.
// If header is not valid, -1 is returned.
int QQuick3DParticleShapeDataUtils::readShapeHeader(QCborStreamReader &reader)
{
int version = -1;
if (reader.lastError() == QCborError::NoError && reader.isArray()) {
// Start root array
reader.enterContainer();
if (reader.isString()) {
QString header = readString(reader);
if (header == QStringLiteral("QQ3D_SHAPE")) {
if (reader.isInteger()) {
version = reader.toInteger();
reader.next();
} else {
qWarning() << "Invalid shape version";
}
} else {
qWarning() << "Invalid shape header";
}
} else {
qWarning() << "Invalid shape container";
}
}
return version;
}
void QQuick3DParticleShapeDataUtils::writeShapeHeader(QCborStreamWriter &writer, int version)
{
// Root array
writer.startArray();
// header name
writer.append("QQ3D_SHAPE");
// file version
writer.append(version);
}
// Write QVariant value into CBOR in correct type.
void QQuick3DParticleShapeDataUtils::writeValue(QCborStreamWriter &writer, const QVariant &value)
{
const QMetaType type = value.metaType();
switch (type.id()) {
case QMetaType::Bool: {
bool b = value.toBool();
writer.append(b);
break;
}
case QMetaType::Int: {
int i = value.toInt();
writer.append(i);
break;
}
case QMetaType::Float: {
float f = value.toFloat();
writer.append(f);
break;
}
case QMetaType::Double: {
double d = value.toDouble();
writer.append(d);
break;
}
case QMetaType::QVector2D: {
QVector2D v = value.value<QVector2D>();
writer.append(v.x());
writer.append(v.y());
break;
}
case QMetaType::QVector3D: {
QVector3D v = value.value<QVector3D>();
writer.append(v.x());
writer.append(v.y());
writer.append(v.z());
break;
}
case QMetaType::QVector4D: {
QVector4D v = value.value<QVector4D>();
writer.append(v.x());
writer.append(v.y());
writer.append(v.z());
writer.append(v.w());
break;
}
case QMetaType::QQuaternion: {
QQuaternion q = value.value<QQuaternion>();
writer.append(q.scalar());
writer.append(q.x());
writer.append(q.y());
writer.append(q.z());
break;
}
case QMetaType::QColor: {
QColor c = value.value<QColor>();
writer.append(c.red());
writer.append(c.green());
writer.append(c.blue());
writer.append(c.alpha());
break;
}
case QMetaType::QRect: {
QRect r = value.value<QRect>();
writer.append(r.x());
writer.append(r.y());
writer.append(r.width());
writer.append(r.height());
break;
}
default: {
qDebug() << "Not able to add:" << value << "of type:" << type.name();
qDebug() << "Please add support for this type into generator.";
break;
}
}
}
QT_END_NAMESPACE
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