AppDemoSceneGLTF Class Reference

Class for GLTF file loading demo scene. More...

#include <AppDemoSceneGLTF.h>

Inheritance diagram for AppDemoSceneGLTF:

Public Member Functions
	AppDemoSceneGLTF (SLSceneID sceneID)
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
SLstring	_modelFile
SLSkybox *	_skybox
SLNode *	_modelGLTF

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 GLTF file loading demo scene.

Definition at line 20 of file AppDemoSceneGLTF.h.

Constructor & Destructor Documentation

AppDemoSceneGLTF()

AppDemoSceneGLTF::AppDemoSceneGLTF

(

SLSceneID

sceneID

)

Definition at line 22 of file AppDemoSceneGLTF.cpp.

  : SLScene("GLTF File Demo Scene"),
    _sceneID(sceneID)
{
    info("GLTF File Format Test Scene");
}

Member Function Documentation

assemble()

void AppDemoSceneGLTF::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 62 of file AppDemoSceneGLTF.cpp.

{
    SLVec3f camPos, lookAt;
    SLfloat camClipFar = 100;
 
    switch (_sceneID)
    {
        case SID_glTF_DamagedHelmet:
        {
            camPos.set(0, 0, 3);
            lookAt.set(0, camPos.y, 0);
            camClipFar = 20;
            break;
        }
        case SID_glTF_FlightHelmet:
        {
            camPos.set(0, 0.33f, 1.1f);
            lookAt.set(0, camPos.y, 0);
            camClipFar = 20;
            break;
        }
        case SID_glTF_Sponza:
        {
            camPos.set(-8, 1.6f, 0);
            lookAt.set(0, camPos.y, 0);
            break;
        }
        case SID_glTF_WaterBottle:
        {
            camPos.set(0, 0, 0.5f);
            lookAt.set(0, camPos.y, 0);
            camClipFar = 20;
            break;
        }
    }
 
    // Create a scene group node
    SLNode* scene = new SLNode("scene node");
    this->root3D(scene);
 
    // Create camera and initialize its parameters
    SLCamera* cam1 = new SLCamera("Camera 1");
    cam1->translation(camPos);
    cam1->lookAt(lookAt);
    cam1->background().colors(SLCol4f(0.2f, 0.2f, 0.2f));
    cam1->focalDist(camPos.length());
    cam1->clipFar(camClipFar);
    cam1->setInitialState();
    scene->addChild(cam1);
 
    // Add directional light with a position that corresponds roughly to the sun direction
    SLLight::gamma       = 2.2f;
    SLLightDirect* light = new SLLightDirect(am,
                                             this,
                                             0.55f,
                                             1.0f,
                                             -0.2f,
                                             0.2f,
                                             0,
                                             1,
                                             1);
    light->lookAt(0, 0, 0);
    light->attenuation(1, 0, 0);
    light->createsShadows(true);
    light->createShadowMapAutoSize(cam1,
                                   SLVec2i(2048, 2048),
                                   4);
    light->shadowMap()->cascadesFactor(1.0);
    light->doSmoothShadows(true);
    light->castsShadows(false);
    light->shadowMinBias(0.001f);
    light->shadowMaxBias(0.003f);
    scene->addChild(light);
 
    // Update all materials and set their skybox to _skybox
    _modelGLTF->updateMeshMat([=](SLMaterial* m)
                              { m->skybox(_skybox); },
                              true);
 
    scene->addChild(_modelGLTF);
 
    this->skybox(_skybox);
    sv->camera(cam1);
    sv->doWaitOnIdle(true); // Saves energy
}

registerAssetsToLoad()

void AppDemoSceneGLTF::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 30 of file AppDemoSceneGLTF.cpp.

{
    al.addSkyboxToLoad(_skybox,
                       al.modelPath() +
                         "GLTF/glTF-Sample-Models/hdris/envmap_malibu.hdr",
                       SLVec2i(256, 256),
                       "HDR Skybox");
    switch (_sceneID)
    {
        case SID_glTF_DamagedHelmet:
            _modelFile = "GLTF/glTF-Sample-Models/2.0/DamagedHelmet/glTF/DamagedHelmet.gltf";
            this->name("glTF-Sample-Model: Damaged Helmet");
            break;
        case SID_glTF_FlightHelmet:
            _modelFile = "GLTF/glTF-Sample-Models/2.0/FlightHelmet/glTF/FlightHelmet.gltf";
            this->name("glTF-Sample-Model: Flight Helmet");
            break;
        case SID_glTF_Sponza:
            _modelFile = "GLTF/glTF-Sample-Models/2.0/Sponza/glTF/Sponza.gltf";
            this->name("glTF-Sample-Model: Sponza Palace in Dubrovnic");
            break;
        case SID_glTF_WaterBottle:
            _modelFile = "GLTF/glTF-Sample-Models/2.0/WaterBottle/glTF/WaterBottle.gltf";
            this->name("glTF-Sample-Model: WaterBottle");
            break;
    }
 
    al.addNodeToLoad(_modelGLTF,
                     AppCommon::modelPath + _modelFile);
}

Member Data Documentation

_modelFile

SLstring AppDemoSceneGLTF::_modelFile

private

Definition at line 47 of file AppDemoSceneGLTF.h.

_modelGLTF

SLNode* AppDemoSceneGLTF::_modelGLTF

private

Definition at line 49 of file AppDemoSceneGLTF.h.

_sceneID

SLSceneID AppDemoSceneGLTF::_sceneID

private

Definition at line 46 of file AppDemoSceneGLTF.h.

_skybox

SLSkybox* AppDemoSceneGLTF::_skybox

private

Definition at line 48 of file AppDemoSceneGLTF.h.

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

• AppDemoSceneGLTF.h
• AppDemoSceneGLTF.cpp