Visualizes streamlines of a vector PDE solution. More...

#include <stream_view.h>

Inheritance diagram for Hermes::Hermes2D::Views::StreamView:

Classes
struct	Node

Public Member Functions
	StreamView (const char title="StreamView", WinGeom wg=NULL)

	StreamView (char title, WinGeom wg=NULL)

void	show (MeshFunction< double > xsln, MeshFunction< double > ysln, int marker, double step, double eps=HERMES_EPS_NORMAL)

void	show (MeshFunction< double > xsln, MeshFunction< double > ysln, int marker, double step, double eps, int xitem, int yitem)

void	add_streamline (double x, double y)

Public Member Functions inherited from Hermes::Hermes2D::Views::View
void	init ()

	View (const char title, WinGeom wg=NULL)

	View (char title, WinGeom wg=NULL)

int	create ()

void	close ()

void	refresh ()
	Refreshes views.

void	set_title (const char *title)
	Changes the window name (in its title-bar) to 'title'.

void	set_min_max_range (double min, double max)

void	auto_min_max_range ()

void	get_min_max_range (double &min, double &max)

void	show_scale (bool show=true)

void	set_scale_position (int horz, int vert)

void	set_scale_size (int width, int height, int numticks)

void	set_scale_format (const char *fmt)

void	fix_scale_width (int width=80)

void	save_screenshot (const char *bmpname, bool high_quality=false)

void	save_numbered_screenshot (const char *format, int number, bool high_quality=false)

void	set_palette (ViewPaletteType type)

void	set_num_palette_steps (int num)

void	set_palette_filter (bool linear)

void	wait_for_keypress (const char *text=NULL)
	Waits for keypress. Deprecated.

void	wait_for_close ()

void	wait_for_draw ()

void	draw_help ()

virtual void	reset_view (bool force_reset)
	Resets view based on the axis-aligned bounding box of the mesh. Assumes that the bounding box is set up. Does not reset if view_not_reset is false.

Protected Member Functions
int	find_triangle_in_tree (double x, double y, Node *father, double x_min, double x_max, double y_min, double y_max, double3 &bar)

void	add_element_to_tree (Node *father, int e_idx, double x_min, double x_max, double y_min, double y_max)

void	build_tree ()
	Builds kD-tree.

void	delete_tree (Node *father)

bool	is_in_triangle (int idx, double x, double y, double3 &bar)

bool	get_solution_values (double x, double y, double &xval, double &yval)
	Gets values of velocities at given point using built kD-tree.

int	create_streamline (double x_start, double y_start, int idx)

void	find_initial_points (int marker, double step, double2 *&initial_points)

int	find_initial_edge (int num_edges, int3 *edges)

virtual void	on_display ()

virtual void	on_mouse_move (int x, int y)

virtual void	on_key_down (unsigned char key, int x, int y)

virtual void	on_left_mouse_down (int x, int y)

virtual const char *	get_help_text () const

Protected Member Functions inherited from Hermes::Hermes2D::Views::View
void	draw_fps ()
	draws current FPS

virtual void	on_create (int output_id)

virtual void	on_reshape (int width, int height)

virtual void	on_left_mouse_up (int x, int y)

virtual void	on_left_mouse_double_click (int x, int y)

virtual void	on_right_mouse_down (int x, int y)

virtual void	on_right_mouse_up (int x, int y)

virtual void	on_right_mouse_double_click (int x, int y)

virtual void	on_middle_mouse_down (int x, int y)

virtual void	on_middle_mouse_up (int x, int y)

virtual void	on_middle_mouse_double_click (int x, int y)

virtual void	on_special_key (int key, int x, int y)

virtual void	on_entry (int state)

virtual void	on_close ()

virtual void	update_layout ()
	Updates layout, i.e., centers mesh.

void	create_gl_palette ()
	Creates pallete texture in OpenGL. Assumes that view_sync is locked.

virtual void	get_palette_color (double x, float *gl_color)
	Fills gl_color with palette color. Assumes that gl_color points to a vector of three components (RGB).

double	transform_x (double x)

double	transform_y (double y)

double	untransform_x (double x)

double	untransform_y (double y)

virtual void	clear_background ()
	Clears background.

void	pre_display ()

void	display_antialiased ()

void	set_ortho_projection (bool no_jitter=false)

void	set_3d_projection (int fov, double znear, double zfar)

void	draw_text (double x, double y, const char *text, int align=-1)

int	get_text_width (const char *text)

char *	get_screenshot_file_name ()

void	save_screenshot_internal (const char *filename)

virtual void	scale_dispatch ()

virtual int	measure_scale_labels ()

void	draw_continuous_scale (char *title, bool righttext)

void	draw_discrete_scale (int numboxes, const char *boxnames[], const float boxcolors[][3])

void	update_tex_adjust ()

Protected Attributes
Vectorizer *	vec

double	max_mag

bool	lines

bool	pmode

double	initial_tau

double	min_tau

double	max_tau

int	num_stream

double2 **	streamlines

int *	streamlength

Node *	root

double	root_x_min

double	root_x_max

double	root_y_min

double	root_y_max

Protected Attributes inherited from Hermes::Hermes2D::Views::View
double	rendering_frames [FPS_FRAME_SIZE]
	time spend in rendering of frames[in ms]

int	rendering_frames_top
	the new location of the next FPS

bool	view_not_reset
	True if the view was not reset and therefore it has to be.

double	vertices_min_x

double	vertices_max_x

double	vertices_min_y

double	vertices_max_y
	AABB of shown mesh.

double	scale

double	log_scale

double	trans_x

double	trans_y

double	center_x

double	center_y

int	margin

int	lspace

int	rspace

int	mouse_x

int	mouse_y

int	scx

int	scy

double	objx

double	objy

bool	dragging

bool	scaling

std::string	title

int	output_id

int	output_x

int	output_y

int	output_width

int	output_height

float	jitter_x

float	jitter_y

bool	hq_frame

bool	frame_ready

ViewPaletteType	pal_type

int	pal_steps

int	pal_filter

double	tex_scale

double	tex_shift

bool	range_auto

double	range_min

double	range_max

bool	b_scale

bool	b_help

bool	scale_focused

bool	scale_dragging

int	pos_horz

int	pos_vert

int	scale_x

int	scale_y

int	scale_width

int	scale_height

int	labels_width

int	scale_numticks

int	scale_box_height

int	scale_box_skip

char	scale_fmt [20]

int	scale_fixed_width

bool	want_screenshot

std::string	screenshot_filename

unsigned int	gl_pallete_tex_id
	OpenGL texture object ID.

Additional Inherited Members
Static Public Member Functions inherited from Hermes::Hermes2D::Views::View
static void	wait (const char *text)
	Closes all views at once.

static void	wait (ViewWaitEvent wait_event=HERMES_WAIT_CLOSE, const char *text=NULL)
	Waits for an event.

Static Protected Member Functions inherited from Hermes::Hermes2D::Views::View
static double	get_tick_count ()
	returns a current time[in ms]

Static Protected Attributes inherited from Hermes::Hermes2D::Views::View
static int	screenshot_no = 1

Detailed Description

Visualizes streamlines of a vector PDE solution.

StreamView is a visualization window for all vector-valued PDE solutions (especially for flow problems).

Definition at line 39 of file stream_view.h.

Member Function Documentation

void Hermes::Hermes2D::Views::StreamView::add_element_to_tree	(	Node *	father,
		int	e_idx,
		double	x_min,
		double	x_max,
		double	y_min,
		double	y_max
	)

protected

Adds triangle to the kD-tree. If father Node has more than 100 elements it splits computation domain into 2 parts (vertically or horizontally).

Definition at line 81 of file stream_view.cpp.

void Hermes::Hermes2D::Views::StreamView::add_streamline	(	double	x,
		double	y
	)

Creates additional streamline with strarting point (x, y) Note: Can be called only after StreamView::show

Definition at line 430 of file stream_view.cpp.

int Hermes::Hermes2D::Views::StreamView::create_streamline	(	double	x_start,
		double	y_start,
		int	idx
	)

protected

Starts from initial point (x_start, y_start) and using adaptive RK method finds streamline with "idx".

Definition at line 188 of file stream_view.cpp.

int Hermes::Hermes2D::Views::StreamView::find_initial_edge	(	int	num_edges,
		int3 *	edges
	)

protected

Finds initial boundary edge (one whose first vertex is not second vertex for any other edge).

Definition at line 292 of file stream_view.cpp.

void Hermes::Hermes2D::Views::StreamView::find_initial_points	(	int	marker,
		double	step,
		double2 *&	initial_points
	)

protected

Finds initial points for all steamlines along boundary with given marker with "step" distance between each other.

Definition at line 320 of file stream_view.cpp.

int Hermes::Hermes2D::Views::StreamView::find_triangle_in_tree	(	double	x,
		double	y,
		Node *	father,
		double	x_min,
		double	x_max,
		double	y_min,
		double	y_max,
		double3 &	bar
	)

protected

Recurent function that finds linearized triangle which contain point (x, y). As side effect it returns bacycentric coordinates of point (x, y) in that triangle.

Definition at line 135 of file stream_view.cpp.

bool Hermes::Hermes2D::Views::StreamView::is_in_triangle	(	int	idx,
		double	x,
		double	y,
		double3 &	bar
	)

protected

Tests whether given point (x, y) lies in given triangle using barycentric coordinates (returned as side efect).

Definition at line 62 of file stream_view.cpp.

void Hermes::Hermes2D::Views::StreamView::show	(	MeshFunction< double > *	xsln,
		MeshFunction< double > *	ysln,
		int	marker,
		double	step,
		double	eps = `HERMES_EPS_NORMAL`
	)

Using velocity components (xsln, ysln) it creates streamlines that begin at the boundary with "marker" and the distance between starting points is "step"

Definition at line 53 of file stream_view.cpp.

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

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation