Renderer Class Reference

Class for rendering surface meshes using OpenGL. More...

#include <pmp/viewers/renderer.h>

Public Member Functions
	Renderer (const SurfaceMesh &mesh)
	Constructor.
	~Renderer ()
	Default destructor, deletes all OpenGL buffers.
const vec3 &	front_color () const
	get front color
void	set_front_color (const vec3 &color)
	set front color
const vec3 &	back_color () const
	get back color
void	set_back_color (const vec3 &color)
	set back color
float	ambient () const
	get ambient reflection coefficient
void	set_ambient (float a)
	set ambient reflection coefficient
float	diffuse () const
	get diffuse reflection coefficient
void	set_diffuse (float d)
	set diffuse reflection coefficient
float	specular () const
	get specular reflection coefficient
void	set_specular (float s)
	set specular reflection coefficient
float	shininess () const
	get specular shininess coefficient
void	set_shininess (float s)
	set specular shininess coefficient
float	alpha () const
	get alpha value for transparent rendering
void	set_alpha (float a)
	set alpha value for transparent rendering
Scalar	crease_angle () const
	get crease angle (in degrees) for visualization of sharp edges
void	set_crease_angle (Scalar ca)
	set crease angle (in degrees) for visualization of sharp edges
int	point_size () const
	get point size for visualization of points
void	set_point_size (int ps)
	set point size for visualization of points
void	set_use_colors (bool use_colors)
	Control usage of color information.
void	draw (const mat4 &projection_matrix, const mat4 &modelview_matrix, const std::string &draw_mode)
	Draw the mesh.
void	update_opengl_buffers ()
	Update all OpenGL buffers for rendering.
void	use_cold_warm_texture ()
	Use color map to visualize scalar fields.
void	use_checkerboard_texture ()
	Use checkerboard texture.
void	load_texture (const std::filesystem::path &filename, GLint format=GL_RGB, GLint min_filter=GL_LINEAR_MIPMAP_LINEAR, GLint mag_filter=GL_LINEAR, GLint wrap=GL_CLAMP_TO_EDGE)
	Load texture from file.
void	load_matcap (const std::filesystem::path &filename)
	Load mat-cap texture from file.
void	add_overlay (std::shared_ptr< Drawable > drawable)
	Add a drawable overlay.

Detailed Description

Class for rendering surface meshes using OpenGL.

Member Function Documentation

load_matcap()

void load_matcap

(

const std::filesystem::path &

filename

)

Load mat-cap texture from file.

The mat-cap will be used whenever the drawing mode is "Texture". This also means that you cannot have texture and mat-cap at the same time.

Parameters

filename

the location and name of the texture

See also

See src/apps/mview.cpp for an example usage.

Exceptions

IOException

in case of failure to load texture from file

load_texture()

void load_texture	(	const std::filesystem::path &	filename,
		GLint	format = GL_RGB,
		GLint	min_filter = GL_LINEAR_MIPMAP_LINEAR,
		GLint	mag_filter = GL_LINEAR,
		GLint	wrap = GL_CLAMP_TO_EDGE
	)

Load texture from file.

Parameters

filename	the location and name of the texture
format	internal format (GL_RGB, GL_RGBA, GL_SRGB8, etc.)
min_filter	interpolation filter for minification
mag_filter	interpolation filter for magnification
wrap	texture coordinates wrap preference

Exceptions

IOException

in case of failure to load texture from file

set_use_colors()

void set_use_colors ( bool  use_colors )

inline

Control usage of color information.

Either per-vertex or per-face colors can be used. Vertex colors are only used if the mesh has a per-vertex property of type Color named "v:color". Face colors are only used if the mesh has a per-face property of type Color named "f:color". If set to false, the default front and back colors are used. Default is true.

Note

Vertex colors take precedence over face colors.