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Diffstat (limited to 'src/imports/threed/billboarditem3d.cpp')
| -rw-r--r-- | src/imports/threed/billboarditem3d.cpp | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/src/imports/threed/billboarditem3d.cpp b/src/imports/threed/billboarditem3d.cpp deleted file mode 100644 index eb94d26f..00000000 --- a/src/imports/threed/billboarditem3d.cpp +++ /dev/null @@ -1,170 +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 "billboarditem3d.h" -#include "qgraphicsbillboardtransform.h" - -/*! - \qmlclass BillboardItem3D BillboardItem3D - \brief The BillboardItem3D will always face toward the viewer. - \since 4.8 - \ingroup qt3d::qml3d - - Sometimes it is desirable to have objects which always face toward the - camera. For example, a quad with text on it may always face the camera - so as to be readable at all times. - - While this can be achieved with a QGraphicsLookAtTransform on a normal - Item3D, the BillboardItem3D class provides a more efficient "cheat" which - takes advantage of the underlying 3D mathematics. - - To use a BillboardItem3D declare it exactly like a regular Item3D. When - the item is drawn a QGraphicsBillboardTransform will be applied to the item - after all other transforms have been performed. - - For example: - - \code - Viewport { - BillboardItem3D { - mesh: Mesh { source: "model.obj" } - effect: Effect { - blending: true - texture: "texture.png" - } - } - } - \endcode - - For a practical illustration of its use see the forest example. -*/ -BillboardItem3D::BillboardItem3D(QObject *parent) - : QDeclarativeItem3D(parent) -{ - m_preserveUpVector = false; -} - -/*! - \qmlproperty bool BillboardItem3D::preserveUpVector - - This property specifies whether the billboard transform should - preserve the "up vector" so that objects stay at right angles - to the ground plane in the scene. - - The default value for this property is false, which indicates that - the object being transformed should always face directly to the camera - This is also known as a "spherical billboard". - - If the value for this property is true, then the object will have - its up orientation preserved. This is also known as a "cylindrical - billboard". -*/ -bool BillboardItem3D::preserveUpVector() const -{ - return m_preserveUpVector; -} - -void BillboardItem3D::setPreserveUpVector(bool value) -{ - m_preserveUpVector = value; - update(); -} - -/*! - \internal - This replaces the standard draw() as used in Item3D. In this instance all drawing - carried out using \a painter follows the standard sequence. However, after the - transforms for the item have been applied, a QGraphicsBillboardTransform is applied - to the model-view matrix. - - After the current item is drawn the model-view matrix from immediately before the - billboard transform being applied will be restored so child items are not affected by it. -*/ -void BillboardItem3D::draw(QGLPainter *painter) -{ - // Bail out if this item and its children have been disabled. - if (!isEnabled()) - return; - if (!isInitialized()) - initialize(painter); - - //Setup picking - int prevId = painter->objectPickId(); - painter->setObjectPickId(objectPickId()); - - //Setup effect (lighting, culling, effects etc) - const QGLLightParameters *currentLight = 0; - QMatrix4x4 currentLightTransform; - drawLightingSetup(painter, currentLight, currentLightTransform); - bool viewportBlend, effectBlend; - drawEffectSetup(painter, viewportBlend, effectBlend); - drawCullSetup(); - - //Local and Global transforms - drawTransformSetup(painter); - - //After all of the other transforms, apply the billboard transform to - //ensure forward facing. - painter->modelViewMatrix().push(); - QGraphicsBillboardTransform bill; - bill.setPreserveUpVector(m_preserveUpVector); - bill.applyTo(const_cast<QMatrix4x4 *>(&painter->modelViewMatrix().top())); - - //Drawing - drawItem(painter); - - //Pop the billboard transform from the model-view matrix stack so that it - //is not applied to child items. - painter->modelViewMatrix().pop(); - - //Draw children - drawChildren(painter); - - //Cleanup - drawTransformCleanup(painter); - drawLightingCleanup(painter, currentLight, currentLightTransform); - drawEffectCleanup(painter, viewportBlend, effectBlend); - drawCullCleanup(); - - //Reset pick id. - painter->setObjectPickId(prevId); -} - |