OpenTissue::gl::Picking Class Reference

#include <gl_picking.h>

List of all members.

Public Member Functions
template<typename draw_functor >
GLuint	operator() (int x, int y, draw_functor const &draw)
Protected Member Functions
GLuint	inFront (GLint hits, GLuint buffer[])

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Detailed Description

Picking Functor.

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Member Function Documentation

GLuint OpenTissue::gl::Picking::inFront	(	GLint	hits,
		GLuint	buffer[]
	)			[inline, protected]

Auxiliary method used by the pick-method.

Processes hits, in order to find the one in front of all the others.

template<typename draw_functor >

GLuint OpenTissue::gl::Picking::operator()	(	int	x,
		int	y,
		draw_functor const &	draw
	)			[inline]

Get Picked Object Name. The pick method returns a name, during rendering the caller must set this name (by using glPushName and glPopName) for the object being rendered.

By default the name value: 0 is used as background, user should not use this value, when setting the object names.

Parameters:

	x	Screen x-coordinates
	y	Screen y-coordinates
	draw	A function pointer to a drawing routine, this method should NOT try to change model view or projection matrices, nor the viewport, it should only draw things!!!

Returns:

The name (a GLuint identifier value) of the front most primitive lying at screen location x,y.

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

• /home/hauberg/Dokumenter/Capture/humim-tracker-0.1/src/OpenTissue/OpenTissue/utility/gl/gl_picking.h