MeshViewer Class Reference

Simple viewer for a SurfaceMesh. More...

#include <pmp/visualization/MeshViewer.h>

Inheritance diagram for MeshViewer:

Public Member Functions
	MeshViewer (const char *title, int width, int height, bool showgui=true)
	constructor
virtual	~MeshViewer ()
	destructor
virtual bool	load_mesh (const char *filename)
	load a mesh from file filename
bool	load_matcap (const char *filename)
	load a matcap texture from file filename
bool	load_texture (const char *filename, GLint format=GL_RGB, GLint min_filter=GL_LINEAR_MIPMAP_LINEAR, GLint mag_filter=GL_LINEAR, GLint wrap=GL_CLAMP_TO_EDGE)
	load a texture from file filename
virtual void	update_mesh ()
	update mesh normals and all buffers for OpenGL rendering. More...
virtual void	draw (const std::string &draw_mode) override
	draw the scene in different draw modes
virtual void	process_imgui () override
	handle ImGUI interface
virtual void	keyboard (int key, int code, int action, int mod) override
	this function handles keyboard events
Vertex	pick_vertex (int x, int y)
	get vertex closest to 3D position Distributed under the mouse cursor
Public Member Functions inherited from TrackballViewer
	TrackballViewer (const char *title, int width, int height, bool showgui=true)
	constructor
virtual	~TrackballViewer ()
	destructor
void	set_scene (const vec3 &center, float radius)
	define the center and radius of the scene/ used for trackball rotation
void	view_all ()
	adjust camera such that the whole scene (defined by set_scene()) is visible
Public Member Functions inherited from Window
	Window (const char *title, int width, int height, bool showgui=true)
	constructor
virtual	~Window ()
	destructor
int	run ()
	main window loop

Protected Attributes
SurfaceMeshGL	mesh_
	the mesh
std::string	filename_
	the current file
Protected Attributes inherited from TrackballViewer
unsigned int	draw_mode_
	draw modes
vec3	center_
	scene position and dimension
float	near_
	projection parameters
mat4	projection_matrix_
	OpenGL matrices.
ivec2	last_point_2d_
	trackball helpers

Additional Inherited Members
Protected Member Functions inherited from TrackballViewer
virtual void	display (void) override
	this function is called when the scene has to be rendered. More...
virtual void	mouse (int button, int action, int mods) override
	this function handles mouse button events
virtual void	motion (double xpos, double ypos) override
	this function handles mouse motion (passive/active position)
virtual void	scroll (double xoffset, double yoffset) override
	this function handles mouse scroll events
virtual void	resize (int width, int height) override
	this function is called if the window is resized
void	clear_draw_modes ()
	reset the list of draw modes
unsigned int	add_draw_mode (const std::string &drawMode)
	add a draw mode
void	set_draw_mode (const std::string &drawMode)
	activate a draw mode
virtual void	init ()
	initialize all OpenGL states
void	rotation (int x, int y)
	turn a mouse event into a rotation around the scene center. calls rotate().
void	translation (int x, int y)
	turn a mouse event into a translation in the view plane. calls translate().
void	zoom (int x, int y)
	turn a mouse event into a zoom, i.e., translation in z-direction. calls translate().
bool	pick (vec3 &result)
	get 3D position under the mouse cursor
bool	pick (int x, int y, vec3 &result)
	get 3D position of 2D position (x,y)
void	fly_to (int x, int y)
	fly toward the position Distributed under the mouse cursor and set rotation center to it
void	translate (const vec3 &trans)
	translate the scene and update modelview matrix
void	rotate (const vec3 &axis, float angle)
	rotate the scene (around its center) and update modelview matrix
bool	map_to_sphere (const ivec2 &point, vec3 &result)
	virtual trackball: map 2D screen point to unit sphere. used by rotate().
Protected Member Functions inherited from Window
virtual void	character (unsigned int)
	this function handles unicode character events
virtual void	do_processing ()
	this function is called just before rendering
void	init_imgui ()
	setup ImGUI user interface
void	scale_imgui (float scale)
	scale ImGUI elements and font
bool	show_imgui () const
	is ImGUI visible or hidden?
void	show_imgui (bool b)
	show or hide ImGUI
void	clear_help_items ()
	clear help items
void	add_help_item (std::string key, std::string description, int position=-1)
	add key binding (or general action description)
void	show_help ()
	show ImGUI help dialog
void	screenshot ()
	take a screenshot, save it to title-n.png using the window title and an incremented number n. More...
int	width () const
	width of window
int	height () const
	height of window
float	high_dpi_scaling () const
	highDPI scaling
float	imgui_scaling () const
	imgui scaling
void	cursor_pos (double &x, double &y) const
	get position of mouse cursor
bool	left_mouse_pressed () const
	is left mouse button pressed down?
bool	right_mouse_pressed () const
	is right mouse button pressed down?
bool	middle_mouse_pressed () const
	is middle mouse button pressed down?
bool	ctrl_pressed () const
	is CTRL modifier key pressed down?
bool	alt_pressed () const
	is ALT modifier key pressed down?
bool	shift_pressed () const
	is SHIFT modifier key pressed down?

Detailed Description

Simple viewer for a SurfaceMesh.

Member Function Documentation

void update_mesh ( )

virtual

update mesh normals and all buffers for OpenGL rendering.

call this function whenever you change either the vertex positions or the triangulation of the mesh