Implementation of picking mechanism for set of models. More...

Inheritance diagram for ModelPicker:

Public Member Functions
	ModelPicker (const Camera *cam)

Model *	pick (const std::vector< Model * > &models, int x, int y)
	Pick a model from a set of models given the cursor position in the screen coordinate system. More...

Public Member Functions inherited from Picker
	Picker (const Camera *cam)

const Camera *	camera () const
	Returns the pointer of the camera.

Line3	picking_line (int x, int y) const
	Construct a picking line. More...

vec3	picking_dir (int x, int y) const
	The picking direction, pointing inside the screen. More...

vec3	project (const vec3 &p) const
	Project a 3D point in the world coordinate system onto the 2D screen coordinate system. More...

vec3	unproject (int x, int y, float depth) const
	Compute the world coordinates of a point defined in the screen coordinate system. More...

void	screen_to_opengl (int x, int y, int &gl_x, int &gl_y, int width, int height) const
	Convert a point expressed in the screen coordinate system (with an origin in the upper left corner) into the OpenGL coordinate system (with an origin in the lower left corner). The high DPI scaling is also taken into consideration, so the result always corresponds to its image pixel. More...

Detailed Description

Implementation of picking mechanism for set of models.

Member Function Documentation

Pick a model from a set of models given the cursor position in the screen coordinate system.

Parameters

models	The models
x	The cursor x-coordinate, relative to the left edge of the content area.
y	The cursor y-coordinate, relative to the top edge of the content area.

Attention: The screen point is expressed in the screen coordinate system with an origin in the upper left corner. So it doesn't necessarily correspond to a pixel on High DPI devices, e.g. a Mac with a Retina display.

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