#include <glutil.h>

Static Public Member Functions
static unsigned int	gen_glu_mipmaps (const EMData *const emdata)
	create an OpenGL mipmap set More...

static unsigned int	gen_gl_texture (const EMData *const emdata, GLenum format=GL_LUMINANCE)
	create an OpenGL texture More...

static unsigned int	render_amp8_gl_texture (EMData *emdata, int x0, int y0, int ixsize, int iysize, int bpl, float scale, int mingray, int maxgray, float render_min, float render_max, float gamma, int flags)
	create an OpenGL texture using render_amp8 More...

static int	nearest_projected_points (const vector< float > &model_matrix, const vector< float > &proj_matrix, const vector< int > &view_matrix, const vector< Vec3f > &points, const float mouse_x, const float mouse_y, const float &nearnes)
	Determine the intersection of .... More...

static void	colored_rectangle (const vector< float > &data, const float &alpha, const bool center_point=false)

static void	mx_bbox (const vector< float > &data, const vector< float > &text_color, const vector< float > &bg_color)

static EMBytes	render_amp8 (EMData *emdata, int x, int y, int xsize, int ysize, int bpl, float scale, int min_gray, int max_gray, float min_render, float max_render, float gamma, int flags)
	Render the image into an 8-bit image. More...

static unsigned long	get_isosurface_dl (MarchingCubes *mc, unsigned int tex_id=0, bool surface_face_z=false, bool recontour=true)
	Get an isosurface display list Traverses the tree, marches the cubes, and renders a display list using the associated vertices and normals Uses OpenGL arrays for maximum performance DEPRECATED. More...

static void	render_using_VBOs (MarchingCubes *mc, unsigned int tex_id=0, bool surface_face_z=false)
	Render a isosurface using buffer objects, this uses non-deprecated methods and improves performance. More...

static void	contour_isosurface (MarchingCubes *mc)
	Recountour isosurface, for use with VBOs. More...

static void	glLoadMatrix (const Transform &xform)
	Load a EMAN style transform to open GL w/o having to go through python Calls glLoadTransposeMatrix rather than glLoadMatrix to convert between C/C++/Python row-major format and openGL's Column major format. More...

static void	glMultMatrix (const Transform &xform)
	Mult a EMAN style transform to open GL w/o having to go through python Calls glMultTransposeMatrix rather than glMultMatrix to convert between C/C++/Python row-major format and openGL's Column major format. More...

static void	glDrawBoundingBox (float width, float height, float depth)
	Draw a bounding box. More...

static void	glDrawDisk (float radius, int spokes)

Static Private Attributes
static GLuint	buffer [2]

Detailed Description

Definition at line 52 of file glutil.h.

Member Function Documentation

◆ colored_rectangle()

static void EMAN::GLUtil::colored_rectangle	(	const vector< float > &	data,
		const float &	alpha,
		const bool	center_point = `false`
	)

static

◆ contour_isosurface()

static void EMAN::GLUtil::contour_isosurface ( MarchingCubes * mc )

static

Recountour isosurface, for use with VBOs.

◆ gen_gl_texture()

static unsigned int EMAN::GLUtil::gen_gl_texture	(	const EMData *const	emdata,
		GLenum	format = `GL_LUMINANCE`
	)

static

create an OpenGL texture

Parameters

emdata	The image data that will be used to create the texture
format	glTexImage() sets its internalFormat and format parameters to this value. Can be GL_COLOR_INDEX, GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA, GL_LUMINANCE, or GL_LUMINANCE_ALPHA

Returns: the texture id used in the call to glBindTextures

◆ gen_glu_mipmaps()

static unsigned int EMAN::GLUtil::gen_glu_mipmaps ( const EMData *const emdata )

static

create an OpenGL mipmap set

Returns: the texture id used in the call to glBindTextures

◆ get_isosurface_dl()

static unsigned long EMAN::GLUtil::get_isosurface_dl	(	MarchingCubes *	mc,
		unsigned int	tex_id = `0`,
		bool	surface_face_z = `false`,
		bool	recontour = `true`
	)

static

Get an isosurface display list Traverses the tree, marches the cubes, and renders a display list using the associated vertices and normals Uses OpenGL arrays for maximum performance DEPRECATED.

Returns: an OpenGL display list number

◆ glDrawBoundingBox()

static void EMAN::GLUtil::glDrawBoundingBox	(	float	width,
		float	height,
		float	depth
	)

static

Draw a bounding box.

This is done on the C side to simplify vertex arrays

◆ glDrawDisk()

static void EMAN::GLUtil::glDrawDisk	(	float	radius,
		int	spokes
	)

static

◆ glLoadMatrix()

static void EMAN::GLUtil::glLoadMatrix ( const Transform & xform )

static

Load a EMAN style transform to open GL w/o having to go through python Calls glLoadTransposeMatrix rather than glLoadMatrix to convert between C/C++/Python row-major format and openGL's Column major format.

Parameters

xform The Transform to apply

◆ glMultMatrix()

static void EMAN::GLUtil::glMultMatrix ( const Transform & xform )

static

Mult a EMAN style transform to open GL w/o having to go through python Calls glMultTransposeMatrix rather than glMultMatrix to convert between C/C++/Python row-major format and openGL's Column major format.

Parameters

xform The Transform to apply

◆ mx_bbox()

static void EMAN::GLUtil::mx_bbox	(	const vector< float > &	data,
		const vector< float > &	text_color,
		const vector< float > &	bg_color
	)

static

◆ nearest_projected_points()

static int EMAN::GLUtil::nearest_projected_points	(	const vector< float > &	model_matrix,
		const vector< float > &	proj_matrix,
		const vector< int > &	view_matrix,
		const vector< Vec3f > &	points,
		const float	mouse_x,
		const float	mouse_y,
		const float &	nearnes
	)

static

Determine the intersection of ....

just ask David Woolford

◆ render_amp8()

static EMBytes EMAN::GLUtil::render_amp8	(	EMData *	emdata,
		int	x,
		int	y,
		int	xsize,
		int	ysize,
		int	bpl,
		float	scale,
		int	min_gray,
		int	max_gray,
		float	min_render,
		float	max_render,
		float	gamma,
		int	flags
	)

static

Render the image into an 8-bit image.

2D images only. flags provide a way to do unusual things with this function, such as calculating a histogram of the rendered area.

Parameters

x	origin of the area to render
y
xsize	size of the area to render in output pixels
ysize
bpl	bytes per line, if asrgb remember *3
scale	scale factor for rendering
min_gray	minimum gray value to render (0-255)
max_gray	maximum gray value to render (0-255)
min_render	float image density corresponding to min_gray
max_render	float image density corresponding to max_gray
gamma
flags	1-RGB (24 bit) rendering,2-add a 256 int greyscale histogram to the end of the image array,4-invert y axis,8-render 32 bit 0xffRRGGBB,16-Color display of complex images

Exceptions

ImageDimensionException If the image is not 2D.

◆ render_amp8_gl_texture()

static unsigned int EMAN::GLUtil::render_amp8_gl_texture	(	EMData *	emdata,
		int	x0,
		int	y0,
		int	ixsize,
		int	iysize,
		int	bpl,
		float	scale,
		int	mingray,
		int	maxgray,
		float	render_min,
		float	render_max,
		float	gamma,
		int	flags
	)

static

create an OpenGL texture using render_amp8

Returns: the texture id used in the call to glBindTextures

◆ render_using_VBOs()

static void EMAN::GLUtil::render_using_VBOs	(	MarchingCubes *	mc,
		unsigned int	tex_id = `0`,
		bool	surface_face_z = `false`
	)

static

Render a isosurface using buffer objects, this uses non-deprecated methods and improves performance.

Member Data Documentation

◆ buffer

GLuint EMAN::GLUtil::buffer[2]

staticprivate

Definition at line 133 of file glutil.h.

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

glutil.h

Static Public Member Functions

Static Private Attributes

Detailed Description

Member Function Documentation

◆ colored_rectangle()

◆ contour_isosurface()

◆ gen_gl_texture()

◆ gen_glu_mipmaps()

◆ get_isosurface_dl()

◆ glDrawBoundingBox()

◆ glDrawDisk()

◆ glLoadMatrix()

◆ glMultMatrix()

◆ mx_bbox()

◆ nearest_projected_points()

◆ render_amp8()

◆ render_amp8_gl_texture()

◆ render_using_VBOs()

Member Data Documentation

◆ buffer