Class for ARUCO marker tracking test scene. More...

#include <AppDemoSceneVideoTrackAruco.h>

Inheritance diagram for AppDemoSceneVideoTrackAruco:

Public Member Functions
	AppDemoSceneVideoTrackAruco (SLSceneID sid)

void	registerAssetsToLoad (SLAssetLoader &al) override
	All scene specific assets have to be registered for async loading in here. More...

void	assemble (SLAssetManager am, SLSceneView sv) override
	After parallel loading of the assets the scene gets assembled in here. More...

Public Member Functions inherited from SLScene
	SLScene (const SLstring &name)

	~SLScene () override

void	initOculus (SLstring shaderDir)

void	root3D (SLNode *root3D)

void	root2D (SLNode *root2D)

void	skybox (SLSkybox *skybox)

void	stopAnimations (SLbool stop)

void	info (SLstring i)

void	loadTimeMS (SLfloat loadTimeMS)

SLAnimManager &	animManager ()

SLAssetManager *	assetManager ()

SLNode *	root3D ()

SLNode *	root2D ()

SLSkybox *	skybox ()

SLstring &	info ()

SLfloat	elapsedTimeMS () const

SLfloat	elapsedTimeSec () const

SLVEventHandler &	eventHandlers ()

SLfloat	loadTimeMS () const

SLVLight &	lights ()

SLfloat	fps () const

AvgFloat &	frameTimesMS ()

AvgFloat &	updateTimesMS ()

AvgFloat &	updateAnimTimesMS ()

AvgFloat &	updateAABBTimesMS ()

AvgFloat &	updateDODTimesMS ()

SLNode *	singleNodeSelected ()
	Returns the node if only one is selected. See also SLMesh::selectNodeMesh. More...

SLMesh *	singleMeshFullSelected ()
	Returns the node if only one is selected. See also SLMesh::selectNodeMesh. More...

SLVNode &	selectedNodes ()

SLVMesh &	selectedMeshes ()

SLbool	stopAnimations () const

SLint	numSceneCameras ()
	Returns the number of camera nodes in the scene. More...

SLCamera *	nextCameraInScene (SLCamera *activeSVCam)
	Returns the next camera in the scene if there is one. More...

bool	onUpdate (bool renderTypeIsRT, bool voxelsAreShown, bool forceCPUSkinning)
	Updates animations and AABBs. More...

void	init (SLAssetManager *am)

virtual void	unInit ()

void	selectNodeMesh (SLNode nodeToSelect, SLMesh meshToSelect)
	Handles the full mesh selection from double-clicks. More...

void	deselectAllNodesAndMeshes ()
	Deselects all nodes and its meshes. More...

SLGLOculus *	oculus ()

Public Member Functions inherited from SLObject
	SLObject (const SLstring &Name="", const SLstring &url="")

virtual	~SLObject ()

void	name (const SLstring &Name)

void	url (const SLstring &url)

const SLstring &	name () const

const SLstring &	url () const

Private Attributes
SLSceneID	_sceneID

Additional Inherited Members
Protected Attributes inherited from SLScene
SLVLight	_lights
	Vector of all lights. More...

SLVEventHandler	_eventHandlers
	Vector of all event handler. More...

SLAnimManager	_animManager
	Animation manager instance. More...

SLAssetManager *	_assetManager
	Pointer to the external assetManager. More...

SLNode *	_root3D
	Root node for 3D scene. More...

SLNode *	_root2D
	Root node for 2D scene displayed in ortho projection. More...

SLSkybox *	_skybox
	pointer to skybox More...

SLstring	_info
	scene info string More...

SLVNode	_selectedNodes
	Vector of selected nodes. See SLMesh::selectNodeMesh. More...

SLVMesh	_selectedMeshes
	Vector of selected meshes. See SLMesh::selectNodeMesh. More...

SLfloat	_loadTimeMS
	time to load scene in ms More...

SLfloat	_frameTimeMS
	Last frame time in ms. More...

SLfloat	_lastUpdateTimeMS
	Last time after update in ms. More...

SLfloat	_fps
	Averaged no. of frames per second. More...

AvgFloat	_frameTimesMS
	Averaged total time per frame in ms. More...

AvgFloat	_updateTimesMS
	Averaged time for update in ms. More...

AvgFloat	_updateAABBTimesMS
	Averaged time for update the nodes AABB in ms. More...

AvgFloat	_updateAnimTimesMS
	Averaged time for update the animations in ms. More...

AvgFloat	_updateDODTimesMS
	Averaged time for update the SLEntities graph. More...

SLbool	_stopAnimations
	Global flag for stopping all animations. More...

std::unique_ptr< SLGLOculus >	_oculus
	Oculus Rift interface. More...

Protected Attributes inherited from SLObject
SLstring	_name
	name of an object More...

SLstring	_url
	uniform resource locator More...

Detailed Description

Class for ARUCO marker tracking test scene.

Definition at line 20 of file AppDemoSceneVideoTrackAruco.h.

Constructor & Destructor Documentation

◆ AppDemoSceneVideoTrackAruco()

AppDemoSceneVideoTrackAruco::AppDemoSceneVideoTrackAruco ( SLSceneID sid )

Definition at line 29 of file AppDemoSceneVideoTrackAruco.cpp.

   : SLScene("Aruco Marker Tracking"),
     _sceneID(sid)
 {
     if (_sceneID == SID_VideoTrackArucoMain)
     {
         name("Track Aruco (main cam.)");
         info("Hold the Aruco board dictionary 0 into the field of view of "
              "the main camera. You can find the Aruco markers in the file "
              "data/Calibrations. If not all markers are tracked you may have "
              "the mirror the video horizontally.");
     }
     else
     {
         name("Track Aruco (scnd. cam.)");
         info("Hold the Aruco board dictionary 0 into the field of view of "
              "the secondary camera. You can find the Aruco markers in the file "
              "data/Calibrations. If not all markers are tracked you may have "
              "the mirror the video horizontally.");
     }
 }

Member Function Documentation

◆ assemble()

void AppDemoSceneVideoTrackAruco::assemble	(	SLAssetManager *	am,
		SLSceneView *	sv
	)

overridevirtual

After parallel loading of the assets the scene gets assembled in here.

Remarks: All scene-specific assets have to be loaded async by overriding SLScene::registerAssetsToLoad and SLScene::assemble. Async loading and assembling means that it happens in a parallel thread and that in there are no OpenGL calls allowed. OpenGL calls are only allowed in the main thread. It is important that all object instantiations within SLScene::assemble do NOT call any OpenGL functions (gl*) because they happen in a parallel thread. All objects that get rendered have to do their initialization when they are used the first time during rendering in the main thread.

Reimplemented from SLScene.

Definition at line 69 of file AppDemoSceneVideoTrackAruco.cpp.

 {
     /*
     The tracking of markers is done in AppDemoVideo::onUpdateVideo by calling
     the specific CVTracked::track method. If a marker was found it overwrites
     the linked nodes object matrix (SLNode::_om). If the linked node is the
     active camera the found transform is additionally inversed.
     This would be the standard augmented reality use case.
     */
  
     if (_sceneID == SID_VideoTrackArucoMain)
         CVCapture::instance()->videoType(VT_MAIN);
     else
         CVCapture::instance()->videoType(VT_SCND);
  
     // Material
     SLMaterial* yellow = new SLMaterial(am,
                                         "mY",
                                         SLCol4f(1, 1, 0, 0.5f));
     SLMaterial* cyan   = new SLMaterial(am,
                                       "mY",
                                       SLCol4f(0, 1, 1, 0.5f));
  
     // Create a scene group node
     SLNode* scene = new SLNode("scene node");
     root3D(scene);
  
     // Create a camera node 1
     SLCamera* cam1 = new SLCamera("Camera 1");
     cam1->translation(0, 0, 5);
     cam1->lookAt(0, 0, 0);
     cam1->fov(CVCapture::instance()->activeCamera->calibration.cameraFovVDeg());
     cam1->background().texture(gVideoTexture);
     cam1->setInitialState();
     cam1->devRotLoc(&AppCommon::devRot, &AppCommon::devLoc);
     scene->addChild(cam1);
  
     // Create a light source node
     SLLightSpot* light1 = new SLLightSpot(am, this, 0.02f);
     light1->translation(0.12f, 0.12f, 0.12f);
     light1->name("light node");
     scene->addChild(light1);
  
     // Get the half edge length of the aruco marker
     SLfloat edgeLen = static_cast<CVTrackedAruco*>(gVideoTracker)->params().edgeLength;
     SLfloat he      = edgeLen * 0.5f;
  
     // Build mesh & node that will be tracked by the 1st marker (camera)
     SLBox*  box1      = new SLBox(am,
                             -he,
                             -he,
                             0.0f,
                             he,
                             he,
                             2 * he,
                             "Box 1",
                             yellow);
     SLNode* boxNode1  = new SLNode(box1,
                                   "Box Node 1");
     SLNode* axisNode1 = new SLNode(new SLCoordAxis(am),
                                    "Axis Node 1");
     axisNode1->setDrawBitsRec(SL_DB_MESHWIRED, false);
     axisNode1->scale(edgeLen);
     boxNode1->addChild(axisNode1);
     boxNode1->setDrawBitsRec(SL_DB_CULLOFF, true);
     scene->addChild(boxNode1);
  
     // The tracker moves the box node
     gVideoTrackedNode = boxNode1;
  
     // Set active camera
     sv->camera(cam1);
  
     // Turn on constant redraw
     sv->doWaitOnIdle(false);
 }

◆ registerAssetsToLoad()

void AppDemoSceneVideoTrackAruco::registerAssetsToLoad ( SLAssetLoader & al )

overridevirtual

All scene specific assets have to be registered for async loading in here.

All assets the should be loaded in parallel must be registered in here.

Remarks: All scene sspecific assets have to be loaded async by overriding SLScene::registerAssetsToLoad and SLScene::assemble. Async loading and assembling means that it happens in a parallel thread and that in there are no OpenGL calls allowed. OpenGL calls are only allowed in the main thread.

Reimplemented from SLScene.

Definition at line 52 of file AppDemoSceneVideoTrackAruco.cpp.

 {
     // Create video texture on global pointer updated in AppDemoVideo
     al.addTextureToLoad(gVideoTexture,
                         AppCommon::texturePath +
                           "LiveVideoError.png",
                         GL_LINEAR,
                         GL_LINEAR);
  
     // Create an ArUco tracker
     al.addLoadTask([]()
                    {
         gVideoTracker = new CVTrackedAruco(9, AppCommon::calibIniPath);
         gVideoTracker->drawDetection(true); });
 }

Member Data Documentation

◆ _sceneID

SLSceneID AppDemoSceneVideoTrackAruco::_sceneID

private

Definition at line 45 of file AppDemoSceneVideoTrackAruco.h.

The documentation for this class was generated from the following files:

Public Member Functions

Private Attributes

Additional Inherited Members