Implementation of RenderArea using ImGui. More...

#include <OGF/skin_imgui/widgets/render_area.h>

Inheritance diagram for OGF::RenderArea:

Public Member Functions
	RenderArea (index_t w, index_t h, index_t fb_w, index_t fb_h)
	RenderArea constructor. More...

	~RenderArea () override
	RenderArea destructor.

void	resize (index_t w, index_t h, index_t fb_w, index_t fb_h)
	Resizes this RenderArea. More...

bool	needs_to_redraw () const
	Tests whether the window needs to be redrawn. More...

void	update ()
	Invalidates the memorized frame so that it will be updated on the next call to draw().

void	update_memorized_frame ()
	Re-generates the memorized frame.

void	draw_memorized_frame ()
	Draws the latest memorized frame.

void	snapshot (const std::string &filename, bool make_current=true, bool with_gui=false)
	Saves a snapshot of this rendering area to an image file. More...

void	update_view_parameters ()
	Call this function if perspective mode is changed.

void	update_background_image_from_data (Memory::pointer ptr, Image::ColorEncoding color_encoding, Image::ComponentEncoding component_encoding, index_t width, index_t height)
	Updates the background image from raw image data. More...

index_t	get_height () const
	Gets the height of the window. More...

index_t	get_frame_buffer_width () const
	Gets the width of the window. More...

index_t	get_frame_buffer_height () const
	Gets the height of the window. More...

void	set_projection_matrix (const mat4 &value)
	Sets the projection matrix. More...

const mat4 &	get_projection_matrix () const
	Gets the projection matrix. More...

void	set_viewing_matrix (const mat4 &value)
	Sets the viewing matrix. More...

const mat4 &	get_viewing_matrix () const
	Gets the viewing matrix. More...

void	set_background_color_1 (const Color &value)
	Sets the primary background color. More...

const Color &	get_background_color_1 () const
	Gets the background color. More...

void	set_background_color_2 (const Color &value)
	Sets the secondary background color. More...

const Color &	get_background_color_2 () const
	Gets the secondary background color. More...

void	set_background_image (const std::string &value)
	Sets the background image. More...

const std::string &	get_background_image () const
	Gets the background image. More...

void	set_lighting_matrix (const mat4 &value)
	Sets the lighting matrix. More...

const mat4 &	get_lighting_matrix () const
	Gets the lighting matrix. More...

RenderingContext *	get_rendering_context () const
	Gets the rendering context. More...

std::string	get_gpu_information () const
	Gets the GPU information. More...

std::string	get_gpu_extensions () const
	Gets GPU extensions. More...

const std::string &	get_clipping_config () const
	Gets the current clipping configuration. More...

void	set_clipping_config (const std::string &clipping_config)
	Sets the current clipping configuration. More...

void	resize_request (RenderingContext *rendering_context, int width, int height)
	A signal that is triggered each time the render area is resized. More...

void	mouse_down (RenderingContext *rendering_context, const vec2 &point_ndc, const vec2 &point_wc, int button, bool control, bool shift)
	A signal that is triggered each time a mouse button is pushed. More...

void	mouse_move (RenderingContext *rendering_context, const vec2 &point_ndc, const vec2 &point_wc, const vec2 &delta_ndc, double delta_x_ndc, double delta_y_ndc, const vec2 &delta_wc, int button, bool control, bool shift)
	A signal that is triggered when the mouse is dragged with a pushed button. More...

void	mouse_up (RenderingContext *rendering_context, const vec2 &point_ndc, const vec2 &point_wc, int button, bool control, bool shift)
	A signal that is triggered each time a mouse button is released. More...

void	key_down (const std::string &value)
	A signal that is triggered each time a key is pushed. More...

void	key_up (const std::string &value)
	A signal that is triggered each time a key is released. More...

void	button_down (int value)
	A signal that is triggered each time a mouse button is pressed. More...

void	button_up (int value)
	A signal that is triggered each time a mouse button is released. More...

void	dropped_file (const std::string &value)
	A signal that is triggered whenever a file is drag-dropped into this RenderArea. More...

void	mouse_button_callback (int button, int action, int mods)

void	scroll_callback (double xoffset, double yoffset)

void	cursor_pos_callback (double xf, double yf)

void	drop_callback (int nb, const char **p)

void	char_callback (unsigned int c)

void	key_callback (int key, int scancode, int action, int mods)

Public Member Functions inherited from OGF::Object
	Object (bool transient=false)
	Object constructor. More...

virtual	~Object ()
	Object destructor.

virtual MetaClass *	meta_class () const
	Gets the meta class. More...

virtual void	set_meta_class (MetaClass *mclass)
	Sets the meta class. More...

unsigned int	id () const
	Gets the identifier of this object. More...

std::string	string_id () const
	Gets the unique string identifier. More...

bool	has_method (const std::string &method_name) const
	Tests whether a method is defined. More...

virtual bool	invoke_method (const std::string &method_name, const ArgList &args, Any &ret_val)
	Invokes a method by method name and argument list, and gets the return value. More...

bool	invoke_method (const std::string &method_name, const ArgList &args)
	Invokes a method by method name and argument list. More...

bool	invoke_method (const std::string &method_name)
	Invokes a method by method name. More...

bool	has_property (const std::string &prop_name) const
	Tests whether a property is defined. More...

virtual bool	get_property (const std::string &prop_name, std::string &prop_value) const
	Gets a property. More...

virtual Connection *	connect_signal_to_slot (const std::string &signal_name, Object *to, const std::string &slot_name)
	Connects a signal with a slot of another object. More...

virtual void	add_connection (Connection *connection)
	Adds a connection to this object. More...

virtual void	remove_connection (Connection *connection)
	Removes a connection to this object. More...

virtual void	get_element (index_t i, Any &value) const
	Gets an element by index. More...

virtual void	set_element (index_t i, const Any &value)
	Sets an element by index. More...

virtual void	search (const std::string &needle, const std::string &path="")
	Displays the names of all objects that contain a substring. More...

bool	get_signals_enabled () const
	Tests wheter signals are enabled. More...

void	set_signals_enabled (bool value)
	Enables or disables signals. More...

bool	get_slots_enabled () const
	Tests wheter slots are enabled. More...

void	set_slots_enabled (bool value)
	Enables or disables slots. More...

MetaClass *	get_meta_class () const
	Gets the meta class. More...

std::string	get_string_id () const
	Gets the unique string identifier. More...

virtual std::string	get_doc () const
	Gets the documentation. More...

virtual Sign	compare (const Object *other) const
	Compares this object with another one. More...

virtual bool	is_a (const MetaType *type) const
	Tests whether this object inherits a given type. More...

void	disconnect ()
	Removes all connections from signals of this objects. More...

void	enable_signals ()
	Enables signals.

void	disable_signals ()
	Disables signals.

void	enable_slots ()
	Enables slots.

void	disable_slots ()
	Disables slots.

void	set_properties (const ArgList &args)
	Sets several properties in a single call. More...

virtual bool	set_property (const std::string &name, const std::string &value)
	Sets an individual property. More...

void	help () const
	Displays some help about this object. More...

virtual bool	set_property (const std::string &name, const Any &value)
	Sets an individual property. More...

virtual bool	get_property (const std::string &prop_name, Any &prop_value) const
	Gets a property. More...

Public Member Functions inherited from GEO::Counted
void	ref () const
	Increments the reference count. More...

void	unref () const
	Decrements the reference count. More...

bool	is_shared () const
	Check if the object is shared. More...

int	nb_refs () const
	Gets the number of references that point to this object. More...

Public Attributes
	__pad0__: void draw()

	__pad1__: index_t get_width() const { return width_

gom_signals	__pad2__: void redraw_request(RenderingContext* rendering_context=nullptr)

Public Attributes inherited from OGF::Object
	__pad0__: virtual index_t get_nb_elements() const

	__pad1__: bool equals(const Object* other) const

Protected Member Functions
void	GL_initialize ()
	Initializes OpenGL and GLUP objects.

void	GL_terminate ()
	Deallocates OpenGL and GLUP objects.

void	update_clipping_config ()

Protected Member Functions inherited from OGF::Object
virtual bool	emit_signal (const std::string &signal_name, const ArgList &args, bool called_from_slot=false)
	Emits a signal and calls the slots it is connected to. More...

Protected Member Functions inherited from GEO::Counted
	Counted ()
	Creates a reference counted object. More...

virtual	~Counted ()
	Destroys a reference counted object. More...

Additional Inherited Members
Static Public Member Functions inherited from OGF::Object
static Object *	id_to_object (unsigned int id)
	Gets an object from a unique object id. More...

Static Public Member Functions inherited from GEO::Counted
static void	ref (const Counted *counted)
	Increments the reference count. More...

static void	unref (const Counted *counted)
	Decrements the reference count. More...

Detailed Description

Implementation of RenderArea using ImGui.

Note: Client code should not use this class directly. It should be only used through the GOM abstraction layer.

Definition at line 56 of file render_area.h.

Constructor & Destructor Documentation

◆ RenderArea()

OGF::RenderArea::RenderArea	(	index_t	w,
		index_t	h,
		index_t	fb_w,
		index_t	fb_h
	)

RenderArea constructor.

Parameters

[in]	w,h	window width and height in pixels.
[in]	fb_w,fb_h	frame buffer width and height in pixels.

Member Function Documentation

◆ button_down()

void OGF::RenderArea::button_down ( int value )

A signal that is triggered each time a mouse button is pressed.

Parameters

[in] value the button (see MouseButton)

◆ button_up()

void OGF::RenderArea::button_up ( int value )

A signal that is triggered each time a mouse button is released.

Parameters

[in] value the button (see MouseButton)

◆ dropped_file()

void OGF::RenderArea::dropped_file ( const std::string & value )

A signal that is triggered whenever a file is drag-dropped into this RenderArea.

Parameters

[in] value the name of the file that was dropped

See also: set_accept_drops(), get_accept_drops()

◆ get_background_color_1()

const Color& OGF::RenderArea::get_background_color_1 ( ) const

Gets the background color.

Returns: the background color

◆ get_background_color_2()

const Color& OGF::RenderArea::get_background_color_2 ( ) const

Gets the secondary background color.

If different from the (primary) background color, then a color-ramp between both is generated.

◆ get_background_image()

const std::string& OGF::RenderArea::get_background_image ( ) const

Gets the background image.

Returns: the path to a file that contains the image, or the empty string if no background image is used.

◆ get_clipping_config()

const std::string& OGF::RenderArea::get_clipping_config ( ) const

inline

Gets the current clipping configuration.

Returns

a ';'-separated string with the following fields:

active (one of "true","false")
axis (one of "x","y","z","d")
volume-mode (one of "std.","cell","strad.","slice")
shift (an integer in [-250, 250])
rotation (the 16 coefficients of a rotation matrix)

Definition at line 306 of file render_area.h.

◆ get_frame_buffer_height()

index_t OGF::RenderArea::get_frame_buffer_height ( ) const

inline

Gets the height of the window.

Returns: the height of the frame buffer in pixels.

Definition at line 187 of file render_area.h.

◆ get_frame_buffer_width()

index_t OGF::RenderArea::get_frame_buffer_width ( ) const

inline

Gets the width of the window.

Returns: the width of the frame buffer in pixels.

Definition at line 179 of file render_area.h.

◆ get_gpu_extensions()

std::string OGF::RenderArea::get_gpu_extensions ( ) const

Gets GPU extensions.

Returns: a string with the list of supported OpenGL extensions

◆ get_gpu_information()

std::string OGF::RenderArea::get_gpu_information ( ) const

Gets the GPU information.

Returns: a string with GPU name, vendor, version

◆ get_height()

index_t OGF::RenderArea::get_height ( ) const

inline

Gets the height of the window.

Returns: the height of the window.

Definition at line 171 of file render_area.h.

◆ get_lighting_matrix()

const mat4& OGF::RenderArea::get_lighting_matrix ( ) const

Gets the lighting matrix.

Returns: a const reference to the 4x4 homogeneous coordinates lighting matrix

◆ get_projection_matrix()

const mat4& OGF::RenderArea::get_projection_matrix ( ) const

Gets the projection matrix.

Returns: a const reference to the 4x4 homogeneous coordinates projection matrix.

◆ get_rendering_context()

RenderingContext* OGF::RenderArea::get_rendering_context ( ) const

Gets the rendering context.

Returns: a pointer to the RenderingContext

◆ get_viewing_matrix()

const mat4& OGF::RenderArea::get_viewing_matrix ( ) const

Gets the viewing matrix.

Returns: a const reference to the 4x4 homogeneous coordinates viewing matrix.

◆ key_down()

void OGF::RenderArea::key_down ( const std::string & value )

A signal that is triggered each time a key is pushed.

Parameters

[in] value a string with the pressed key, or "shift", "control", "alt", "left", "right", "up", "down" for special keys.

◆ key_up()

void OGF::RenderArea::key_up ( const std::string & value )

A signal that is triggered each time a key is released.

Parameters

[in] value a string with the pressed key, or "shift", "control", "alt", "left", "right", "up", "down" for special keys.

◆ mouse_down()

void OGF::RenderArea::mouse_down	(	RenderingContext *	rendering_context,
		const vec2 &	point_ndc,
		const vec2 &	point_wc,
		int	button,
		bool	control,
		bool	shift
	)

A signal that is triggered each time a mouse button is pushed.

Parameters

[in]	rendering_context	a pointer to the RenderingContext
[in]	point_ndc	the picked point, in normalized device coordinates
[in]	point_wc	the picked point, in world coordinates
[in]	button	the pushed button (see MouseButton)
[in]	control	true if the control key is pushed
[in]	shift	true if the shift key is pushed

◆ mouse_move()

void OGF::RenderArea::mouse_move	(	RenderingContext *	rendering_context,
		const vec2 &	point_ndc,
		const vec2 &	point_wc,
		const vec2 &	delta_ndc,
		double	delta_x_ndc,
		double	delta_y_ndc,
		const vec2 &	delta_wc,
		int	button,
		bool	control,
		bool	shift
	)

A signal that is triggered when the mouse is dragged with a pushed button.

Parameters

[in]	rendering_context	a pointer to the RenderingContext
[in]	point_ndc	the picked point, in normalized device coordinates
[in]	point_wc	the picked point, in world coordinates
[in]	delta_ndc	the displacement vector in normalized device coordinates
[in]	delta_x_ndc	the x component of the displacement vector in normalized device coordinates
[in]	delta_y_ndc	the y component of the displacement vector in normalized device coordinates
[in]	delta_wc	the displacement vector in world coordinates
[in]	button	the pushed button (see MouseButton)
[in]	control	true if the control key is pushed
[in]	shift	true if the shift key is pushed

◆ mouse_up()

void OGF::RenderArea::mouse_up	(	RenderingContext *	rendering_context,
		const vec2 &	point_ndc,
		const vec2 &	point_wc,
		int	button,
		bool	control,
		bool	shift
	)

A signal that is triggered each time a mouse button is released.

Parameters

[in]	rendering_context	a pointer to the RenderingContext
[in]	point_ndc	the picked point, in normalized device coordinates
[in]	point_wc	the picked point, in world coordinates
[in]	button	the pushed button (see MouseButton)
[in]	control	true if the control key is pushed
[in]	shift	true if the shift key is pushed

◆ needs_to_redraw()

bool OGF::RenderArea::needs_to_redraw ( ) const

inline

Tests whether the window needs to be redrawn.

Return values

true	if the window needs to be redrawn.
false	if the window is up to date.

Definition at line 86 of file render_area.h.

◆ resize()

void OGF::RenderArea::resize	(	index_t	w,
		index_t	h,
		index_t	fb_w,
		index_t	fb_h
	)

Resizes this RenderArea.

Parameters

[in]	w,h	the new window width and height in pixels.
[in]	fb_w,fb_h	the new frame buffer width and height in pixels. May be different from w and h on retina displays.

Called whenenver the size of the window does not match the current size.

◆ resize_request()

void OGF::RenderArea::resize_request	(	RenderingContext *	rendering_context,
		int	width,
		int	height
	)

A signal that is triggered each time the render area is resized.

Parameters

[in]	rendering_context	a pointer to the RenderingContext
[in]	width	the new width
[in]	height	the new height

◆ set_background_color_1()

void OGF::RenderArea::set_background_color_1 ( const Color & value )

Sets the primary background color.

Parameters

[in] value the background color

◆ set_background_color_2()

void OGF::RenderArea::set_background_color_2 ( const Color & value )

Sets the secondary background color.

If different from the (primary) background color, then a color-ramp between both is generated.

Parameters

[in] value the secondary background color

◆ set_background_image()

void OGF::RenderArea::set_background_image ( const std::string & value )

Sets the background image.

If a background image is specified, then it is used to fill the background (instead of the background color).

Parameters

[in] value the path to a file that contains the image or the empty string if no background image should be used

◆ set_clipping_config()

void OGF::RenderArea::set_clipping_config ( const std::string & clipping_config )

inline

Sets the current clipping configuration.

Parameters

[in]

clipping_config

a ';'-separated string with the following fields:

active (one of "true","false")
axis (one of "x","y","z","d")
volume-mode (one of "std.","cell","strad.","slice")
shift (an integer in [-250, 250])
rotation (the 16 coefficients of a rotation matrix)

Definition at line 320 of file render_area.h.

◆ set_lighting_matrix()

void OGF::RenderArea::set_lighting_matrix ( const mat4 & value )

Sets the lighting matrix.

The light source is transformed by the lighting matrix. This transform occurs in normalized device coordinates.

Parameters

[in] value a const reference to the 4x4 homongeneous coordinates lighting matrix to be used

◆ set_projection_matrix()

void OGF::RenderArea::set_projection_matrix ( const mat4 & value )

Sets the projection matrix.

Parameters

[in] value the projection matrix, as a 4x4 homogeneous coordinates matrix.

◆ set_viewing_matrix()

void OGF::RenderArea::set_viewing_matrix ( const mat4 & value )

Sets the viewing matrix.

Parameters

[in] value the viewing matrix, as a 4x4 homogeneous coordinates matrix.

◆ snapshot()

void OGF::RenderArea::snapshot	(	const std::string &	filename,
		bool	make_current = `true`,
		bool	with_gui = `false`
	)

Saves a snapshot of this rendering area to an image file.

Parameters

[in]	filename	a string with the name of the image file.
[in]	make_current	if true, makes the associated rendering context current, else use the current rendering context.
[in]	with_gui	if set, the gui of graphite is rendereed in the image with the 3D objects, else only the 3D objects are rendered

◆ update_background_image_from_data()

void OGF::RenderArea::update_background_image_from_data	(	Memory::pointer	ptr,
		Image::ColorEncoding	color_encoding,
		Image::ComponentEncoding	component_encoding,
		index_t	width,
		index_t	height
	)

Updates the background image from raw image data.

Image data is in Cairo format (ARGB). Note that it is different from the convention in Graphite (RGBA). Note also that the Y axis is flipped as compared to the rest of Graphite.

Parameters

[in]	ptr	a pointer to image data
[in]	color_encoding	the color encoding of the data
[in]	component_encoding	the data type used for the color components
[in]	width	image width
[in]	height	image height

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

OGF/skin_imgui/widgets/render_area.h

Public Member Functions

Public Attributes

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RenderArea()

Member Function Documentation

◆ button_down()

◆ button_up()

◆ dropped_file()

◆ get_background_color_1()

◆ get_background_color_2()

◆ get_background_image()

◆ get_clipping_config()

◆ get_frame_buffer_height()

◆ get_frame_buffer_width()

◆ get_gpu_extensions()

◆ get_gpu_information()

◆ get_height()

◆ get_lighting_matrix()

◆ get_projection_matrix()

◆ get_rendering_context()

◆ get_viewing_matrix()

◆ key_down()

◆ key_up()

◆ mouse_down()

◆ mouse_move()

◆ mouse_up()

◆ needs_to_redraw()

◆ resize()

◆ resize_request()

◆ set_background_color_1()

◆ set_background_color_2()

◆ set_background_image()

◆ set_clipping_config()

◆ set_lighting_matrix()

◆ set_projection_matrix()

◆ set_viewing_matrix()

◆ snapshot()

◆ update_background_image_from_data()