Class for test scene for volume rendering of an angiographic MRI scan". More...

#include <AppDemoSceneVolumeRayCast.h>

Inheritance diagram for AppDemoSceneVolumeRayCast:

Public Member Functions
	AppDemoSceneVolumeRayCast ()

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
SLGLTexture *	_mriTex3D

SLGLProgram *	_sp

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 test scene for volume rendering of an angiographic MRI scan".

Definition at line 20 of file AppDemoSceneVolumeRayCast.h.

Constructor & Destructor Documentation

◆ AppDemoSceneVolumeRayCast()

AppDemoSceneVolumeRayCast::AppDemoSceneVolumeRayCast ( )

Definition at line 20 of file AppDemoSceneVolumeRayCast.cpp.

   : SLScene("Volume Ray Cast Test")
 {
     info("Volume Rendering of an angiographic MRI scan");
 }

Member Function Documentation

◆ assemble()

void AppDemoSceneVolumeRayCast::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 52 of file AppDemoSceneVolumeRayCast.cpp.

 {
     // Create transfer LUT 1D texture
     SLVAlphaLUTPoint tfAlphas = {SLAlphaLUTPoint(0.00f, 0.00f),
                                  SLAlphaLUTPoint(0.01f, 0.75f),
                                  SLAlphaLUTPoint(1.00f, 1.00f)};
     SLTexColorLUT*   tf       = new SLTexColorLUT(am,
                                           tfAlphas,
                                           CLUT_BCGYR);
  
     // Load shader and uniforms for volume size
     SLGLUniform1f* volX = new SLGLUniform1f(UT_const,
                                             "u_volumeX",
                                             (SLfloat)_mriTex3D->images()[0]->width());
     SLGLUniform1f* volY = new SLGLUniform1f(UT_const,
                                             "u_volumeY",
                                             (SLfloat)_mriTex3D->images()[0]->height());
     SLGLUniform1f* volZ = new SLGLUniform1f(UT_const,
                                             "u_volumeZ",
                                             (SLfloat)_mriTex3D->images().size());
     _sp->addUniform1f(volX);
     _sp->addUniform1f(volY);
     _sp->addUniform1f(volZ);
  
     // Create volume rendering material
     SLMaterial* matVR = new SLMaterial(am,
                                        "matVR",
                                        _mriTex3D,
                                        tf,
                                        nullptr,
                                        nullptr,
                                        _sp);
  
     // Create camera
     SLCamera* cam1 = new SLCamera("Camera 1");
     cam1->translation(0, 0, 3);
     cam1->lookAt(0, 0, 0);
     cam1->focalDist(3);
     cam1->background().colors(SLCol4f(0, 0, 0));
     cam1->setInitialState();
     cam1->devRotLoc(&AppCommon::devRot, &AppCommon::devLoc);
  
     // Set light
     SLLightSpot* light1 = new SLLightSpot(am, this, 0.3f);
     light1->powers(0.1f, 1.0f, 1.0f);
     light1->attenuation(1, 0, 0);
     light1->translation(5, 5, 5);
  
     // Assemble scene with box node
     SLNode* scene = new SLNode("Scene");
     root3D(scene);
     scene->addChild(light1);
     scene->addChild(new SLNode(new SLBox(am,
                                          -1,
                                          -1,
                                          -1,
                                          1,
                                          1,
                                          1,
                                          "Box",
                                          matVR)));
     scene->addChild(cam1);
  
     sv->camera(cam1);
 }

◆ registerAssetsToLoad()

void AppDemoSceneVolumeRayCast::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 27 of file AppDemoSceneVolumeRayCast.cpp.

 {
     // Load volume data into 3D texture
     SLVstring mriImages;
     for (SLint i = 0; i < 207; ++i)
         mriImages.push_back(Utils::formatString(al.texturePath() + "i%04u_0000b.png", i));
  
     SLint clamping3D = GL_CLAMP_TO_EDGE;
     if (SLGLState::instance()->getSLVersionNO() > "320")
         clamping3D = 0x812D; // GL_CLAMP_TO_BORDER
  
     al.addTextureToLoad(_mriTex3D,
                         mriImages,
                         GL_LINEAR,
                         GL_LINEAR,
                         clamping3D,
                         clamping3D,
                         "mri_head_front_to_back",
                         false);
     al.addProgramToLoad(_sp,
                         AppCommon::shaderPath + "VolumeRenderingRayCast.vert",
                         AppCommon::shaderPath + "VolumeRenderingRayCast.frag");
 }

Member Data Documentation

◆ _mriTex3D

SLGLTexture* AppDemoSceneVolumeRayCast::_mriTex3D

private

Definition at line 45 of file AppDemoSceneVolumeRayCast.h.

◆ _sp

SLGLProgram* AppDemoSceneVolumeRayCast::_sp

private

Definition at line 46 of file AppDemoSceneVolumeRayCast.h.

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

Public Member Functions

Private Attributes

Additional Inherited Members