core/vgui/internals/vgui_back_project.h File Reference

Given a 3x4 camera, project a point x back onto a plane pi. More...

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Functions
bool	vgui_back_project_d3d4d4d4d4_d4 (double const x[3], double const P0[4], double const P1[4], double const P2[4], double const pi[4], double X[4])
	Given a 3x4 camera, project a point x back onto a plane pi.
bool	vgui_back_project_d4d4_d4 (double const x[3], double const pi[4], double X[4])
	Easy version - gets the projection matrices for you.
bool	vgui_back_project_iid4_d4 (int vx, int vy, double const pi[4], double X[4])
	Easy version - backproject from viewport coordinates.
bool	vgui_back_project_ii_dd (int vx, int vy, double *x, double *y)
	Easy version - backproject from viewport coordinates to (x,y,0,1).

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Detailed Description

Given a 3x4 camera, project a point x back onto a plane pi.

Author:

fsm@robots.ox.ac.uk

Definition in file vgui_back_project.h.

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Function Documentation

bool vgui_back_project_d3d4d4d4d4_d4	(	double const	x[3],
		double const	P0[4],
		double const	P1[4],
		double const	P2[4],
		double const	pi[4],
		double	X[4]
	)

Given a 3x4 camera, project a point x back onto a plane pi.

The given point x is in normalize device coordinates. The computed point X is in object coordinates.

Definition at line 27 of file vgui_back_project.cxx.

bool vgui_back_project_d4d4_d4	(	double const	x[3],
		double const	pi[4],
		double	X[4]
	)

Easy version - gets the projection matrices for you.

bool vgui_back_project_ii_dd	(	int	vx,
		int	vy,
		double *	x,
		double *	y
	)

Easy version - backproject from viewport coordinates to (x,y,0,1).

Definition at line 62 of file vgui_back_project.cxx.

bool vgui_back_project_iid4_d4	(	int	vx,
		int	vy,
		double const	pi[4],
		double	X[4]
	)

Easy version - backproject from viewport coordinates.

Definition at line 52 of file vgui_back_project.cxx.