Description

VSG-based Chrono run-time visualization system.

#include <ChVisualSystemVSG.h>

Inheritance diagram for chrono::vsg3d::ChVisualSystemVSG:

[legend]

Collaboration diagram for chrono::vsg3d::ChVisualSystemVSG:

Classes
struct	DeformableMesh
	Data related to deformable meshes (FEA and SCM). More...

struct	ParticleCloud
	Data for particle clouds. More...

Public Member Functions
	ChVisualSystemVSG (int num_divs=24)
	Create the Chrono::VSG run-time visualization system. More...

virtual void	Initialize () override
	Initialize the visualization system.

virtual void	BindAll () override
	Process all visual assets in the associated ChSystem. More...

virtual void	BindItem (std::shared_ptr< ChPhysicsItem > item) override
	Process the visual assets for the specified physics item. More...

virtual bool	Run () override
	Check if rendering is running. More...

virtual void	Quit () override
	Terminate the visualization system.

virtual void	BeginScene () override
	Perform any necessary operations at the beginning of each rendering frame.

virtual void	Render () override
	Draw all 3D shapes and GUI elements at the current frame. More...

virtual void	RenderCOGFrames (double axis_length=1) override
	Render COG frames for all bodies in the system.

void	SetCOGFrameScale (double axis_length)

void	ToggleCOGFrameVisibility ()

void	RenderJointFrames (double axis_length=1)
	Render joint frames for all links in the system.

void	SetJointFrameScale (double axis_length)

void	ToggleJointFrameVisibility ()

virtual void	EndScene () override
	End the scene draw at the end of each animation frame.

virtual void	WriteImageToFile (const std::string &filename) override
	Create a snapshot of the frame to be rendered and save it to the provided file. More...

void	SetWindowSize (const ChVector2i &size)

void	SetWindowSize (int width, int height)

void	SetWindowPosition (const ChVector2i &pos)

void	SetWindowPosition (int from_left, int from_top)

void	SetWindowTitle (const std::string &title)

void	SetClearColor (const ChColor &color)

void	SetOutputScreen (int screenNum=0)

void	SetFullscreen (bool yesno=false)

void	SetUseSkyBox (bool yesno)

void	SetWireFrameMode (bool mode=true)
	Draw the scene objects as wireframes.

void	SetCameraVertical (CameraVerticalDir upDir)
	Set the camera up vector (default: Z).

virtual int	AddCamera (const ChVector3d &pos, ChVector3d targ=VNULL) override
	Add a camera to the VSG scene. More...

virtual void	SetCameraPosition (int id, const ChVector3d &pos) override
	Set the location of the specified camera.

virtual void	SetCameraTarget (int id, const ChVector3d &target) override
	Set the target (look-at) point of the specified camera.

virtual void	SetCameraPosition (const ChVector3d &pos) override
	Set the location of the current (active) camera.

virtual void	SetCameraTarget (const ChVector3d &target) override
	Set the target (look-at) point of the current (active) camera.

virtual ChVector3d	GetCameraPosition () const override
	Get the location of the current (active) camera.

virtual ChVector3d	GetCameraTarget () const override
	Get the target (look-at) point of the current (active) camera.

double	GetRenderingFPS () const
	Get estimated FPS.

void	SetVerbose (bool verbose)
	Enable/disable VSG information terminal output during initialization (default: false).

void	SetShadows (bool yesno=false)
	Enable/disable Shadows, use before Initialization, to see an effect.

void	SetLightIntensity (float intensity)

void	SetLightDirection (double azimuth, double elevation)

void	SetCameraAngleDeg (double angleDeg)

void	SetGuiFontSize (float theSize)

virtual void	AddGrid (double x_step, double y_step, int nx, int ny, ChCoordsys<> pos=CSYSNORM, ChColor col=ChColor(0.1f, 0.1f, 0.1f)) override
	Add a grid with specified parameters in the x-y plane of the given frame. More...

virtual int	AddVisualModel (std::shared_ptr< ChVisualModel > model, const ChFrame<> &frame) override
	Add a visual model not associated with a physical item. More...

virtual int	AddVisualModel (std::shared_ptr< ChVisualShape > model, const ChFrame<> &frame) override
	Add a visual model not associated with a physical item. More...

virtual void	UpdateVisualModel (int id, const ChFrame<> &frame) override
	Update the position of the specified visualization-only model.

size_t	AddGuiComponent (std::shared_ptr< ChGuiComponentVSG > gc)
	Add a user-defined GUI component. More...

size_t	AddGuiColorbar (const std::string &title, double min_val, double max_val)
	Add a colorbar as a GUI component. More...

std::shared_ptr< ChGuiComponentVSG >	GetGuiComponent (size_t id)
	Access the specified GUI component. More...

void	SetGuiVisibility (bool show_gui)
	Set visibility for all GUI components (default: true).

void	ToggleGuiVisibility ()
	Toggle GUI visibility for all GUI components.

bool	IsGuiVisible () const
	Return boolean indicating whether or not GUI are visible.

void	SetBaseGuiVisibility (bool show_gui)
	Set visibility for the default (base) GUI component (default: true).

void	ToggleBaseGuiVisibility ()
	Toggle GUI visibility for the default (base) GUI component.

bool	IsBaseGuiVisible () const
	Return boolean indicating whether or not the default (base) GUI is visible.

void	AddEventHandler (std::shared_ptr< ChEventHandlerVSG > eh)
	Add a user-defined VSG event handler.

Public Member Functions inherited from chrono::ChVisualSystem
virtual void	AttachSystem (ChSystem *sys)
	Attach a Chrono system to this visualization system.

virtual void	UnbindItem (std::shared_ptr< ChPhysicsItem > item)
	Remove the visual assets for the specified physics item from this visualization system.

void	UpdateCamera (int id, const ChVector3d &pos, ChVector3d target)
	Update the location and/or target points of the specified camera.

void	UpdateCamera (const ChVector3d &pos, ChVector3d target)

virtual void	RenderFrame (const ChFrame<> &frame, double axis_length=1)
	Render the specified reference frame.

virtual double	GetSimulationRTF () const
	Return the simulation real-time factor (simulation time / simulated time). More...

virtual double	GetSimulationTime () const
	Return the current simulated time. More...

void	SetImageOutputDirectory (const std::string &dir)
	Set output directory for saving frame snapshots (default: ".").

void	SetImageOutput (bool val)
	Enable/disable writing of frame snapshots to file.

virtual void	EnableModalAnalysis (bool val)
	Enable modal analysis visualization. More...

virtual void	SetModalModeNumber (int val)
	Set the mode to be shown (only if some ChModalAssembly is found).

virtual void	SetModalAmplitude (double val)
	Set the amplitude of the shown mode (only if some ChModalAssembly is found).

virtual void	SetModalSpeed (double val)
	Set the speed of the shown mode (only if some ChModalAssembly is found).

virtual void	SetModalModesMax (int maxModes)
	Set the maximum number of modes selectable (only if some ChModalAssembly is found).

std::vector< ChSystem * >	GetSystems () const
	Get the list of associated Chrono systems.

ChSystem &	GetSystem (int i) const
	Get the specified associated Chrono system.

Protected Member Functions
virtual void	OnSetup (ChSystem *sys) override
	Perform necessary setup operations at the beginning of a time step.

void	UpdateFromMBS ()

void	exportScreenImage ()
	export screen image as file (png, bmp, tga, jpg)

Protected Member Functions inherited from chrono::ChVisualSystem
virtual void	OnUpdate (ChSystem *sys)
	Perform any necessary update operations at the end of a time step. More...

virtual void	OnClear (ChSystem *sys)
	Remove all visualization objects from this visualization system. More...

Protected Attributes
int	m_screen_num = -1

bool	m_use_fullscreen = false

bool	m_use_shadows = false

vsg::ref_ptr< vsg::Window >	m_window

vsg::ref_ptr< vsg::Viewer >	m_viewer
	high-level VSG rendering manager

vsg::ref_ptr< vsg::RenderGraph >	m_renderGraph

bool	m_show_gui
	flag to toggle global GUI visibility

bool	m_show_base_gui
	flag to toggle base GUI visibility

size_t	m_camera_gui
	identifier for the camera info GUI component

std::shared_ptr< ChGuiComponentVSG >	m_base_gui
	default (base) GUI component

std::vector< std::shared_ptr< ChGuiComponentVSG > >	m_gui
	list of all additional GUI components

std::vector< std::shared_ptr< ChEventHandlerVSG > >	m_evhandler
	list of all additional event handlers

vsg::dvec3	m_vsg_cameraEye = vsg::dvec3(-10.0, 0.0, 0.0)

vsg::dvec3	m_vsg_cameraTarget = vsg::dvec3(0.0, 0.0, 0.0)

vsg::ref_ptr< vsg::LookAt >	m_lookAt

vsg::ref_ptr< vsg::Camera >	m_vsg_camera

bool	m_camera_trackball
	create a camera trackball control?

vsg::ref_ptr< vsg::Group >	m_scene

vsg::ref_ptr< vsg::Group >	m_bodyScene

vsg::ref_ptr< vsg::Group >	m_linkScene

vsg::ref_ptr< vsg::Group >	m_particleScene

vsg::ref_ptr< vsg::Group >	m_deformableScene

vsg::ref_ptr< vsg::Group >	m_decoScene

vsg::ref_ptr< vsg::Switch >	m_cogFrameScene

vsg::ref_ptr< vsg::Switch >	m_jointFrameScene

vsg::ref_ptr< vsg::Options >	m_options
	I/O related options for vsg::read/write calls.

vsg::ref_ptr< vsg::Builder >	m_vsgBuilder

vsg::ref_ptr< ShapeBuilder >	m_shapeBuilder

bool	m_verbose
	VSG terminal initialization output.

bool	m_wireframe
	draw as wireframes

bool	m_capture_image
	export current frame to image file

std::string	m_imageFilename
	name of file to export current frame

std::vector< DeformableMesh >	m_def_meshes

std::vector< ParticleCloud >	m_clouds

Protected Attributes inherited from chrono::ChVisualSystem
bool	m_initialized

std::vector< ChSystem * >	m_systems
	associated Chrono system(s)

bool	m_write_images
	if true, save snapshots

std::string	m_image_dir
	directory for image files

Friends
class	ChBaseGuiComponentVSG

class	ChBaseEventHandlerVSG

Additional Inherited Members
Public Types inherited from chrono::ChVisualSystem
enum	Type { Type::IRRLICHT, Type::VSG, Type::OpenGL, Type::OptiX, NONE }
	Supported run-time visualization systems. More...

Constructor & Destructor Documentation

◆ ChVisualSystemVSG()

chrono::vsg3d::ChVisualSystemVSG::ChVisualSystemVSG ( int num_divs = 24 )

Create the Chrono::VSG run-time visualization system.

Optionally, specify the resolution used for tesselation of primitive shapes, by providing the number of divisions used to discretize a full circle. The default value of 24 corresponds to 15-degree divisions.

Member Function Documentation

◆ AddCamera()

int chrono::vsg3d::ChVisualSystemVSG::AddCamera	(	const ChVector3d &	pos,
		ChVector3d	targ = `VNULL`
	)

overridevirtual

Add a camera to the VSG scene.

Note that currently only one camera is supported.

Reimplemented from chrono::ChVisualSystem.

◆ AddGrid()

void chrono::vsg3d::ChVisualSystemVSG::AddGrid	(	double	x_step,
		double	y_step,
		int	nx,
		int	ny,
		ChCoordsys<>	pos = `CSYSNORM`,
		ChColor	col = `ChColor(0.1f, 0.1f, 0.1f)`
	)

overridevirtual

Add a grid with specified parameters in the x-y plane of the given frame.

Parameters

x_step	grid cell size in X direction
y_step	grid cell size in Y direction
nx	number of cells in X direction
ny	number of cells in Y direction
pos	grid reference frame
col	grid line color

Reimplemented from chrono::ChVisualSystem.

◆ AddGuiColorbar()

size_t chrono::vsg3d::ChVisualSystemVSG::AddGuiColorbar	(	const std::string &	title,
		double	min_val,
		double	max_val
	)

Add a colorbar as a GUI component.

Returns the index of the new component. This function must be called before Initialize().

◆ AddGuiComponent()

size_t chrono::vsg3d::ChVisualSystemVSG::AddGuiComponent ( std::shared_ptr< ChGuiComponentVSG > gc )

Add a user-defined GUI component.

Returns the index of the new component. This function must be called before Initialize().

◆ AddVisualModel() [1/2]

int chrono::vsg3d::ChVisualSystemVSG::AddVisualModel	(	std::shared_ptr< ChVisualModel >	model,
		const ChFrame<> &	frame
	)

overridevirtual

Add a visual model not associated with a physical item.

Return an ID which can be used later to modify the position of this visual model.

Reimplemented from chrono::ChVisualSystem.

◆ AddVisualModel() [2/2]

int chrono::vsg3d::ChVisualSystemVSG::AddVisualModel	(	std::shared_ptr< ChVisualShape >	shape,
		const ChFrame<> &	frame
	)

overridevirtual

Add a visual model not associated with a physical item.

This version constructs a visual model consisting of the single specified shape Return an ID which can be used later to modify the position of this visual model.

Reimplemented from chrono::ChVisualSystem.

◆ BindAll()

void chrono::vsg3d::ChVisualSystemVSG::BindAll ( )

overridevirtual

Process all visual assets in the associated ChSystem.

This function is called by default by Initialize(), but can also be called later if further modifications to visualization assets occur.

Reimplemented from chrono::ChVisualSystem.

◆ BindItem()

void chrono::vsg3d::ChVisualSystemVSG::BindItem ( std::shared_ptr< ChPhysicsItem > item )

overridevirtual

Process the visual assets for the specified physics item.

This function must be called if a new physics item is added to the system or if changes to its visual model occur after the call to Initialize().

Reimplemented from chrono::ChVisualSystem.

◆ GetGuiComponent()

std::shared_ptr< ChGuiComponentVSG > chrono::vsg3d::ChVisualSystemVSG::GetGuiComponent ( size_t id )

Access the specified GUI component.

Identify the GUI component with the index returned by AddGuiComponent.

◆ Render()

void chrono::vsg3d::ChVisualSystemVSG::Render ( )

overridevirtual

Draw all 3D shapes and GUI elements at the current frame.

This function is typically called inside a loop such as

   while(vis->Run()) {...}

Implements chrono::ChVisualSystem.

◆ Run()

bool chrono::vsg3d::ChVisualSystemVSG::Run ( )

overridevirtual

Check if rendering is running.

Returns false if the viewer was closed.

Implements chrono::ChVisualSystem.

◆ WriteImageToFile()

void chrono::vsg3d::ChVisualSystemVSG::WriteImageToFile ( const std::string & filename )

overridevirtual

Create a snapshot of the frame to be rendered and save it to the provided file.

The file extension determines the image format.

Reimplemented from chrono::ChVisualSystem.

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

/builds/uwsbel/chrono/src/chrono_vsg/ChVisualSystemVSG.h
/builds/uwsbel/chrono/src/chrono_vsg/ChVisualSystemVSG.cpp

Description

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Constructor & Destructor Documentation

◆ ChVisualSystemVSG()

Member Function Documentation

◆ AddCamera()

◆ AddGrid()

◆ AddGuiColorbar()

◆ AddGuiComponent()

◆ AddVisualModel() [1/2]

◆ AddVisualModel() [2/2]

◆ BindAll()

◆ BindItem()

◆ GetGuiComponent()

◆ Render()

◆ Run()

◆ WriteImageToFile()