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Diffstat (limited to 'src/imports/shapes/cylindermesh.cpp')
| -rw-r--r-- | src/imports/shapes/cylindermesh.cpp | 348 |
1 files changed, 0 insertions, 348 deletions
diff --git a/src/imports/shapes/cylindermesh.cpp b/src/imports/shapes/cylindermesh.cpp deleted file mode 100644 index ee814009..00000000 --- a/src/imports/shapes/cylindermesh.cpp +++ /dev/null @@ -1,348 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtQuick3D module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "cylindermesh.h" -#include "qglbuilder.h" -#include "qglcylinder.h" -#include "qgraphicsscale3d.h" -#include "qglabstractscene.h" - -QT_BEGIN_NAMESPACE - -/*! - \qmlclass CylinderMesh CylinderMesh - \brief The CylinderMesh item represents a simple cylinder in 3D space. - \since 4.8 - \ingroup qt3d::qml3d::shapes - \inherits Item3D - - The CylinderMesh element in QML provides a way to create a simple cylinder - object, usually for testing material effects. For example, the - following QML code displays a green cylinder of with a uniform - diameter of 0.5, and a length of 3.0, centered with its base on the - origin: - - \code - Item3D { - mesh: CylinderMesh { - radius: 0.5 - length: 3.0 - } - effect: Effect { - color: "#aaca00" - } - } - \endcode - - The CylinderMesh element is part of the \c{Qt3D.Shapes} namespace, - so the following must appear at the top of any QML file that - references it: - - \code - import Qt3D.Shapes 1.0 - \endcode - - The cylinder shape can have differing levels of detail, allowing - for additional slices and layers to be drawn if more detailed meshes - are required. - - To display the cylinder mesh you can create your own Item3D as shown - above, or use the convenience Cylinder QML Component. - - \code - Cylinder { - radius: 0.5 - length: 3.0 - effect: Effect { - color: "#aaca00" - } - } - \endcode - - \section1 Performance Hints for Larger Scenes - - The convenience Cylinder QML component will create a new mesh each - time is instantiated. - - If you have a scene with a number of similar capsules use your own - Item3D elements to all refer to the same mesh. See the Performance - Hints section of the SphereMesh documentation for more details on - this important technique. - - \section1 Performance Hints for Animation - - Some support for animation of the CylinderMesh properties is provided - by utilizing a QGraphicsScale3D to implement the length & radius - properties, and by caching levels of detail. - - So within limits animation of these items should provide reasonable - results. Be aware that on constrained devices animation of the - level of detail for many cylinders could cause problems with memory - usage due to the caching. - - \sa Item3D, SphereMesh -*/ - -CylinderMeshPrivate::CylinderMeshPrivate() - : topNode(new QGLSceneNode) - , currentCylinder(0) - , scale(0) - , radius(1.0f) - , length(1.0f) - , lod(5) - , sceneSet(false) -{ - topNode->setObjectName("CylinderMesh"); -} - -CylinderMeshPrivate::~CylinderMeshPrivate() -{ - topNode->removeNode(currentCylinder); - delete topNode; - QList<QGLSceneNode*> lods = lodGeometry.values(); - qDeleteAll(lods); -} - -class CylinderScene : public QGLAbstractScene -{ -public: - explicit CylinderScene(QGLSceneNode *s) : m_s(s) {} - ~CylinderScene() {} - QList<QObject *> objects() const - { - QList<QObject *> s; - s.append(m_s); - return s; - } - QGLSceneNode *mainNode() const - { - return m_s; - } -private: - QGLSceneNode *m_s; -}; - -/*! - \internal -*/ -CylinderMesh::CylinderMesh(QObject *parent) - : QDeclarativeMesh(parent) - , d_ptr(new CylinderMeshPrivate) -{ -} - -/*! - \qmlproperty real CylinderMesh::radius - - This property defines the radius of the cylinder. - The default value is 1. -*/ -qreal CylinderMesh::radius() const -{ - Q_D(const CylinderMesh); - return d->radius; -} - -void CylinderMesh::setRadius(qreal radius) -{ - Q_D(CylinderMesh); - if (qFuzzyCompare(radius, 1)) - radius = 1.0f; - if (d->radius != radius) { - d->radius = radius; - createGeometry(); - emit radiusChanged(); - emit dataChanged(); - } -} - -/*! - \qmlproperty real CylinderMesh::length - - This property defines the length of the cylinder. - The default value is 1. -*/ -qreal CylinderMesh::length() const -{ - Q_D(const CylinderMesh); - return d->length; -} - -void CylinderMesh::setLength(qreal length) -{ - Q_D(CylinderMesh); - if (qFuzzyCompare(length, 1)) - length = 1.0f; - if (d->length != length) { - d->length = length; - createGeometry(); - emit lengthChanged(); - emit dataChanged(); - } -} - -/*! - \qmlproperty int CylinderMesh::levelOfDetail - - This property defines the level of detail, between 1 and 10, - which controls the number of slices and layers that are used - to generate the cylinder's mesh. - - Values outside the range 1 to 10 will be clamped to the range - when the cylinder is generated. - - The default value is 1, which produces a cylinder with 8 - slices/facets and 2 layers. Each successive increase in this - level of detail doubles the number of facets and layers. The - following table provides information for these level of detail - values - - \table - \header \o Level of Detail \o Facets \o Layers - \row \o 1 \o 8 \o 2 - \row \o 2 \o 16 \o 4 - \row \o 3 \o 32 \o 8 - \row \o 4 \o 64 \o 16 - \row \o 5 \o 128 \o 32 - \row \o 6 \o 256 \o 64 - \row \o 7 \o 512 \o 128 - \row \o 8 \o 1024 \o 256 - \row \o 9 \o 2048 \o 512 - \row \o 10 \o 4096 \o 1024 - \endtable -*/ -int CylinderMesh::levelOfDetail() const -{ - Q_D(const CylinderMesh); - return d->lod; -} - -void CylinderMesh::setLevelOfDetail(int lod) -{ - Q_D(CylinderMesh); - lod = qBound(1, lod, 10); - if (d->lod != lod) { - d->lod = lod; - createGeometry(); - emit levelOfDetailChanged(); - emit dataChanged(); - } -} - -/*! - \internal -*/ -void CylinderMesh::draw(QGLPainter *painter, int branchId) -{ - Q_D(CylinderMesh); - if (!d->currentCylinder) - createGeometry(); - QDeclarativeMesh::draw(painter, branchId); -} - -/*! - \internal -*/ -void CylinderMesh::createGeometry() -{ - Q_D(CylinderMesh); - - int facets = 4 * 1 << d->lod; - int layers = 1 << d->lod; - - // Create a new geometry node for this level of detail if necessary. - QGLSceneNode *geometry = d->lodGeometry.value(d->lod, 0); - if (!geometry) { - QGLBuilder builder; - builder << QGL::Faceted << QGLCylinder(2.0, 2.0, 1.0, facets, - layers, true, true); - geometry = builder.finalizedSceneNode(); - geometry->setParent(this); - d->lodGeometry.insert(d->lod, geometry); - } - Q_ASSERT_X(geometry != 0, Q_FUNC_INFO, "Could not create/find geometry!"); - if (d->currentCylinder != geometry) - { - if (d->currentCylinder) - d->topNode->removeNode(d->currentCylinder); - d->topNode->addNode(geometry); - d->currentCylinder = geometry; - } - - // Set the length as a scale on the modelview transformation. - // This way, we don't have to regenerate the geometry every - // frame if the height is being animated. - // - // We could do the scales separately if either height or radius - // were != 1.0f, but the same amount of maths is required, so - // we can just scale appropriately on the axes. - if (d->radius != 1.0f || d->length != 1.0) - { - if (!d->scale) - { - d->scale = new QGraphicsScale3D(d->topNode); - d->topNode->addTransform(d->scale); - } - if (d->scale->scale().x() != d->radius || - d->scale->scale().z() != d->length) - { - d->scale->setScale(QVector3D(d->radius, d->radius, d->length)); - } - } - else - { - // If there is already a scale set it to be the identity scale. - // This case is optimised for in QGraphicsScale. Removing it from - // the transform list is too expensive, especially if the size is - // being animated, and the next frame will recreate it. - if (d->scale) - d->scale->setScale(QVector3D(1, 1, 1)); - } - - if (!d->sceneSet) - { - setScene(new CylinderScene(d->topNode)); - d->sceneSet = true; - } -} - -QT_END_NAMESPACE - |