ground/gcs/src/libs/osgearth/osgQtQuick/OSGBillboardNode.cpp

   1 /**
   2  ******************************************************************************
   3  *
   4  * @file       OSGBillboardNode.cpp
   5  * @author     The LibrePilot Project, http://www.librepilot.org Copyright (C) 2016.
   6  * @addtogroup
   7  * @{
   8  * @addtogroup
   9  * @{
  10  * @brief
  11  *****************************************************************************/
  12 /*
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 3 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful, but
  19  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  20  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  21  * for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with this program; if not, write to the Free Software Foundation, Inc.,
  25  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  26  */
  27
  28 #include "OSGBillboardNode.hpp"
  29
  30 #include <osg/Depth>
  31 #include <osg/Texture2D>
  32 #include <osg/ImageSequence>
  33
  34 #include <osgDB/ReadFile>
  35
  36 #include <QDebug>
  37
  38 namespace osgQtQuick {
  39 // NOTE : these flags should not overlap with OSGGroup flags!!!
  40 // TODO : find a better way...
  41 enum DirtyFlag {};
  42
  43 struct OSGBillboardNode::Hidden : public QObject {
  44     Q_OBJECT
  45
  46 private:
  47     OSGBillboardNode * const self;
  48
  49     osg::ref_ptr<osg::Camera> camera;
  50
  51 public:
  52     Hidden(OSGBillboardNode *self) : QObject(self), self(self)
  53     {}
  54
  55     osg::Node *createNode()
  56     {
  57         camera = new osg::Camera;
  58         camera->setClearMask(0);
  59         camera->setCullingActive(false);
  60         camera->setAllowEventFocus(false);
  61         camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
  62         camera->setRenderOrder(osg::Camera::POST_RENDER);
  63         camera->setProjectionMatrix(osg::Matrix::ortho2D(0.0, 1.0, 0.0, 1.0));
  64
  65         osg::StateSet *ss = camera->getOrCreateStateSet();
  66         ss->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
  67         ss->setAttributeAndModes(new osg::Depth(osg::Depth::LEQUAL, 1.0, 1.0));
  68
  69         return camera;
  70     }
  71 };
  72
  73 /* class OSGBillboardNode */
  74
  75 OSGBillboardNode::OSGBillboardNode(QObject *parent) : Inherited(parent), h(new Hidden(this))
  76 {}
  77
  78 OSGBillboardNode::~OSGBillboardNode()
  79 {
  80     delete h;
  81 }
  82
  83 osg::Node *OSGBillboardNode::createNode()
  84 {
  85     return h->createNode();
  86 }
  87
  88 void OSGBillboardNode::updateNode()
  89 {
  90     Inherited::updateNode();
  91 }
  92 } // namespace osgQtQuick
  93
  94 #include "OSGBillboardNode.moc"