SelectionBox::SelectionBox(const Ogre::String& name): Ogre::ManualObject(name)
{
setRenderQueueGroup(Ogre::RENDER_QUEUE_OVERLAY); // when using this, ensure Depth Check is Off in the material
setUseIdentityProjection(true);
setUseIdentityView(true);
setQueryFlags(0);
}
void DynamicLines::setUse2D(bool flag)
{
setUseIdentityProjection(flag);
setUseIdentityView(flag);
mUse2D = flag;
mDirty = true;
update();
}
//-------------------------------------------------------------------------------------
SelectionBox::SelectionBox(const Ogre::String& name): Ogre::ManualObject(name)
{
/** Constructor\n
* set projection and view identity matrix\n
* not query itself\n
*/
setRenderQueueGroup(Ogre::RENDER_QUEUE_OVERLAY);
setUseIdentityProjection(true);
setUseIdentityView(true);
setQueryFlags(0);
}
SelectionBox::SelectionBox(const std::string& i_name, Ogre::SceneManager& i_manager)
: ManualObject(i_name)
, m_scene_manager(i_manager)
{
setRenderQueueGroup(Ogre::RENDER_QUEUE_OVERLAY); // when using this, ensure Depth Check is Off in the material
setUseIdentityProjection(true);
setUseIdentityView(true);
setQueryFlags(0);
m_scene_manager.getRootSceneNode()->attachObject(this);
}
/*----------------------------------------------------*/
DrawBuffer::DrawBuffer(const Ogre::MaterialPtr& material) :
mMaterial(material),
mIsDirty(false),
mIsUpdating(false),
mVertexData(NULL),
mIndexData(NULL),
mQuadCount(0),
mRenderQueueID(Ogre::RENDER_QUEUE_OVERLAY),
mParent(NULL) {
setUseIdentityProjection(true);
setUseIdentityView(true);
};
SelectionBox::SelectionBox(const Ogre::String name, Engine *engine):
Ogre::ManualObject(name),
mEngine(engine),
mLeft(.0f), mTop(.0f), mRight(.0f), mBottom(.0f),
mVolQuery(nullptr)
{
/*The first function sets the render queue for the object to be the Overlay queue.
The next two functions set the projection and view matrices to be the identity. Projection and
view matrices are used by many rendering systems (such as OpenGL and DirectX) to define where
objects go in the world. Since Ogre abstracts this away for us, we won't go into detail about
what these matrices actually are or what they do. Instead what you need to know is that if you
set the projection and view matrix to be the identity, as we have here, we will basically create a
2D object. When defining this object, the coordinate system changes a bit. We no longer deal with
the Z axis (if you are asked for the Z axis, set the value to -1). Instead we have a new coordinate
system with X and Y running from -1 to 1 inclusive. Lastly, we will set the query flags for the object
to be 0, which will prevent the selection rectangle from being included in the query results.*/
setRenderQueueGroup(Ogre::RENDER_QUEUE_OVERLAY); // when using this, ensure Depth Check is Off in the material
setUseIdentityProjection(true);
setUseIdentityView(true);
setQueryFlags(0);
{
Ogre::MaterialPtr const whiteNoLignthing = Ogre::MaterialManager::getSingleton().getByName("BaseWhiteNoLighting");
Ogre::String const resName = "DynamicLines_BaseWhiteNoLighting_"+mEngine->level()->name();
mMaterial = Ogre::MaterialManager::getSingleton().getByName(resName);
if(mMaterial.isNull())
{
mMaterial = whiteNoLignthing->clone(resName, true, mEngine->level()->name());
mMaterial->load();
}
mMaterial->setDepthCheckEnabled(false);
}
if(nullptr != mEngine->level())
{
mEngine->level()->levelRoot()->createChildSceneNode()->attachObject(this);
mVolQuery = mEngine->level()->sceneManager()->createPlaneBoundedVolumeQuery(Ogre::PlaneBoundedVolumeList());
}
}
