ScalarView Class Reference

Visualizes a scalar PDE solution. More...

#include <scalar_view.h>

Inherits View.

Inherited by BaseView.

Classes
struct	ElementInfo
	< element info structure More...
struct	GLVertex2
	< OpenGL vertex. Used to cache vertices prior rendering More...
struct	SVGExportParams
struct	VertexNodeInfo
	< Information about a vertex node. More...
Public Member Functions
	ScalarView (const char *title="ScalarView", DEFAULT_WINDOW_POS)
virtual	~ScalarView ()
void	show (MeshFunction sln, double eps=H2D_EPS_NORMAL, int item=H2D_FN_VAL_0, MeshFunction xdisp=NULL, MeshFunction *ydisp=NULL, double dmult=1.0)
void	show_mesh (bool show=true)
void	show_contours (double step, double orig=0.0)
void	hide_contours ()
void	set_3d_mode (bool enable=true)
void	load_data (const char *filename)
void	save_data (const char *filename)
void	save_numbered (const char *format, int number)
void	export_mesh_edges_svg (const char *filename, float width_mm=100.0f)
	Exports mesh edges to SVG format. Height is calculated from input vertices. Function locks data.
Protected Types
typedef void(*	DrawSingleEdgeCallback )(int inx_vert_a, int inx_vert_b, ScalarView viewer, void param)
	A callback function that draws edge using specified vertex indices. Param is user supplied parameter.
Protected Member Functions
	H2D_API_USED_STL_VECTOR (VertexNodeInfo)
void	init_vertex_nodes (Mesh *mesh)
	Creates a copy of vertex nodes for purpose of displaying and selection.
VertexNodeInfo *	find_nearest_node_in_range (float x, float y, float radius)
	Finds nearest node in range.
void	draw_vertex_nodes ()
	Draws vertex nodes.
void	draw_single_vertex_node (const VertexNodeInfo &node)
	Draws a single vertex node.
void	create_nodes_widgets ()
	Creates vertex nodes widgets if not created already.
	H2D_API_USED_STL_VECTOR (ElementInfo)
void	init_element_info (Mesh *mesh)
	Creates element info from mesh.
void	create_element_info_widgets ()
	Creates element ID widgets if not created already.
void	draw_element_infos_2d ()
	Draws elements infos in 2D mode.
virtual void	create_setup_bar ()
	create setup bar. Assumes that current window is set
void	prepare_gl_geometry (const double value_min, const double value_irange)
	prepares geometry in a form compatible with GL arrays; Data are updated if lin is updated. In a case of a failure (out of memory), gl_verts is NULL and an old OpenGL rendering method has to be used.
void	draw_values_2d (const double value_min, const double value_irange)
	draws values
void	draw_edges_2d ()
	draws edges
void	draw_normals_3d ()
void	calculate_mesh_aabb (double x_min, double x_max, double y_min, double y_max)
	Calculates AABB from edges.
void	draw_edges (DrawSingleEdgeCallback draw_single_edge, void *param, bool boundary_only)
	Draws edges of elements and boundary of mesh. Functions assumes that data are locked.
virtual void	reset_view (bool force_reset)
	Resets 2d and 3d view.
virtual void	update_layout ()
	Updates layout, i.e., centers 2d and 3d mesh.
void	draw_tri_contours (double3 vert, int3 tri)
void	calculate_normals (double3 verts, int num_verts, int3 tris, int num_tris)
	Initializes normals.
void	init_lighting ()
void	update_mesh_info ()
	Updates mesh info. Assumes that data lock is locked.
virtual void	on_display ()
virtual void	on_key_down (unsigned char key, int x, int y)
virtual void	on_special_key (int key, int x, int y)
virtual void	on_mouse_move (int x, int y)
virtual void	on_right_mouse_down (int x, int y)
	Handles selecting/deselecting of nodes.
virtual void	on_middle_mouse_down (int x, int y)
virtual void	on_middle_mouse_up (int x, int y)
virtual const char *	get_help_text () const
virtual void	on_close ()
virtual void	on_create (int output_id)
virtual void	on_left_mouse_down (int x, int y)
virtual void	on_left_mouse_up (int x, int y)
virtual void	on_right_mouse_up (int x, int y)
virtual void	on_reshape (int width, int height)
Static Protected Member Functions
static bool	compare_vertex_nodes_x (const VertexNodeInfo &a, const VertexNodeInfo &b)
	Returns true, if a's X-axis coordinate is lower than b's one. Used to sort mesh nodes for searching purposes.
static void	draw_svg_edge (int inx_vert_a, int inx_vert_b, ScalarView viewer, void param)
	Draws edge specified by edge into SVG file given as parameter (type: SVGExportParams*). Functions assumes that data are locked.
static void	draw_gl_edge (int inx_vert_a, int inx_vert_b, ScalarView viewer, void param)
	Draws edge specified by edge indices using GL. Functions assumes that data are locked.
Protected Attributes
std::vector< VertexNodeInfo >	vertex_nodes
	Vertex nodes. Sorted accordin to the X-axis.
VertexNodeInfo *	pointed_vertex_node
	A vertex node that is under the mouse cursor. NULL if none.
bool	allow_node_selection
unsigned int	pointed_node_widget
	> True if node selection is allowed
unsigned int	selected_node_widget
	> A GL display-list denoting a pointed vertex node. The geometry assumes the size of a pixel is 1x1.
const int	node_pixel_radius
	> A GL display-list denoting a selected mesh node. The geometry assumes the size of a pixel is 1x1.
const int	node_widget_vert_cnt
	A number of vertices for a mesh node widget.
std::vector< ElementInfo >	element_infos
	Element info.
unsigned int	element_id_widget
bool	show_element_info
	> A GL display-list denoting a element ID widget. The geometry assumes the size of a pixel is 1x1.
int	tw_wnd_id
	tw window ID
TwBar *	tw_setup_bar
	setup bar
Linearizer	lin
bool	lin_updated
	true, if lin now contains new values
unsigned int	gl_coord_buffer
	Vertex coordinate buffer. (x,y,t).
unsigned int	gl_index_buffer
	Index data buffer.
unsigned int	gl_edge_inx_buffer
	A buffer for edge indices. The side of the buffer is H2DV_GL_MAX_EDGE_BUFFER pairs of indids.
int	max_gl_verts
	A maximum allocated number of vertices.
int	max_gl_tris
	A maximum allocated number of triangles.
int	gl_tri_cnt
	A number of OpenGL triangles.
bool	show_values
	true to show values
bool	show_edges
	true to show edges of mesh
float	edges_color [3]
	color of edges
bool	contours
	true to enable drawing of contours
double	cont_orig
double	cont_step
	contour settings.
float	cont_color [3]
	color of contours (RGB)
bool	pmode
bool	mode3d
bool	panning
double	xrot
double	yrot
double	xtrans
double	ytrans
double	ztrans
double	xzscale
double	yscale
double	xctr
double	yctr
double	zctr
double	vertices_avg_value
	Average value of a vertex. Used to center the mesh.
double3 *	normals

Detailed Description

Visualizes a scalar PDE solution.

ScalarView is a visualization window for all scalar-valued PDE solutions.

Member Typedef Documentation

typedef void(* ScalarView::DrawSingleEdgeCallback)(int inx_vert_a, int inx_vert_b, ScalarView *viewer, void *param) [protected]

A callback function that draws edge using specified vertex indices. Param is user supplied parameter.

Constructor & Destructor Documentation

ScalarView::ScalarView	(	const char *	title = `"ScalarView"`,
		DEFAULT_WINDOW_POS
	)

ScalarView::~ScalarView ( ) [virtual]

Member Function Documentation

void ScalarView::calculate_mesh_aabb	(	double *	x_min,
		double *	x_max,
		double *	y_min,
		double *	y_max
	)			`[protected]`

Calculates AABB from edges.

void ScalarView::calculate_normals	(	double3 *	verts,
		int	num_verts,
		int3 *	tris,
		int	num_tris
	)			`[protected]`

Initializes normals.

bool ScalarView::compare_vertex_nodes_x	(	const VertexNodeInfo &	a,
		const VertexNodeInfo &	b
	)			`[static, protected]`

Returns true, if a's X-axis coordinate is lower than b's one. Used to sort mesh nodes for searching purposes.

void ScalarView::create_element_info_widgets ( ) [protected]

Creates element ID widgets if not created already.

void ScalarView::create_nodes_widgets ( ) [protected]

Creates vertex nodes widgets if not created already.

void ScalarView::create_setup_bar ( ) [protected, virtual]

create setup bar. Assumes that current window is set

void ScalarView::draw_edges	(	DrawSingleEdgeCallback	draw_single_edge,
		void *	param,
		bool	boundary_only
	)			`[protected]`

Draws edges of elements and boundary of mesh. Functions assumes that data are locked.

void ScalarView::draw_edges_2d ( ) [protected]

draws edges

void ScalarView::draw_element_infos_2d ( ) [protected]

Draws elements infos in 2D mode.

void ScalarView::draw_gl_edge	(	int	inx_vert_a,
		int	inx_vert_b,
		ScalarView *	viewer,
		void *	param
	)			`[static, protected]`

Draws edge specified by edge indices using GL. Functions assumes that data are locked.

void ScalarView::draw_normals_3d ( ) [protected]

void ScalarView::draw_single_vertex_node ( const VertexNodeInfo & node ) [protected]

Draws a single vertex node.

void ScalarView::draw_svg_edge	(	int	inx_vert_a,
		int	inx_vert_b,
		ScalarView *	viewer,
		void *	param
	)			`[static, protected]`

Draws edge specified by edge into SVG file given as parameter (type: SVGExportParams*). Functions assumes that data are locked.

void ScalarView::draw_tri_contours	(	double3 *	vert,
		int3 *	tri
	)			`[protected]`

void ScalarView::draw_values_2d	(	const double	value_min,
		const double	value_irange
	)			`[protected]`

draws values

void ScalarView::draw_vertex_nodes ( ) [protected]

Draws vertex nodes.

void ScalarView::export_mesh_edges_svg	(	const char *	filename,
		float	width_mm = `100.0f`
	)

Exports mesh edges to SVG format. Height is calculated from input vertices. Function locks data.

ScalarView::VertexNodeInfo * ScalarView::find_nearest_node_in_range	(	float	x,
		float	y,
		float	radius
	)			`[protected]`

Finds nearest node in range.

const char * ScalarView::get_help_text ( ) const [protected, virtual]

Reimplemented from View.

Reimplemented in BaseView.

ScalarView::H2D_API_USED_STL_VECTOR ( ElementInfo ) [protected]

ScalarView::H2D_API_USED_STL_VECTOR ( VertexNodeInfo ) [protected]

void ScalarView::hide_contours ( ) [inline]

void ScalarView::init_element_info ( Mesh * mesh ) [protected]

Creates element info from mesh.

void ScalarView::init_lighting ( ) [protected]

void ScalarView::init_vertex_nodes ( Mesh * mesh ) [protected]

Creates a copy of vertex nodes for purpose of displaying and selection.

void ScalarView::load_data ( const char * filename )

void ScalarView::on_close ( ) [protected, virtual]

Reimplemented from View.

void ScalarView::on_create ( int output_id ) [protected, virtual]

Reimplemented from View.

void ScalarView::on_display ( ) [protected, virtual]

Implements View.

void ScalarView::on_key_down	(	unsigned char	key,
		int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_left_mouse_down	(	int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_left_mouse_up	(	int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_middle_mouse_down	(	int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_middle_mouse_up	(	int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_mouse_move	(	int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_reshape	(	int	width,
		int	height
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_right_mouse_down	(	int	x,
		int	y
	)			`[protected, virtual]`

Handles selecting/deselecting of nodes.

Reimplemented from View.

void ScalarView::on_right_mouse_up	(	int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

void ScalarView::on_special_key	(	int	key,
		int	x,
		int	y
	)			`[protected, virtual]`

Reimplemented from View.

Reimplemented in BaseView.

void ScalarView::prepare_gl_geometry	(	const double	value_min,
		const double	value_irange
	)			`[protected]`

prepares geometry in a form compatible with GL arrays; Data are updated if lin is updated. In a case of a failure (out of memory), gl_verts is NULL and an old OpenGL rendering method has to be used.

void ScalarView::reset_view ( bool force_reset ) [protected, virtual]

Resets 2d and 3d view.

Reimplemented from View.

void ScalarView::save_data ( const char * filename )

void ScalarView::save_numbered	(	const char *	format,
		int	number
	)

void ScalarView::set_3d_mode ( bool enable = true ) [inline]

void ScalarView::show	(	MeshFunction *	sln,
		double	eps = `H2D_EPS_NORMAL`,
		int	item = `H2D_FN_VAL_0`,
		MeshFunction *	xdisp = `NULL`,
		MeshFunction *	ydisp = `NULL`,
		double	dmult = `1.0`
	)