linePosition3d.m File Reference

LINEPOSITION3D Return the position of a 3D point projected on a 3D line. More...

Functions
function pos =	linePosition3d (point, line)
	LINEPOSITION3D Return the position of a 3D point projected on a 3D line.

Detailed Description

LINEPOSITION3D Return the position of a 3D point projected on a 3D line.

Function Documentation

linePosition3d()

function pos = linePosition3d	(		point,
			line )

LINEPOSITION3D Return the position of a 3D point projected on a 3D line.

T = linePosition3d(POINT, LINE) Computes position of point POINT on the line LINE, relative to origin point and direction vector of the line. LINE has the form [x0 y0 z0 dx dy dy], POINT has the form [x y z], and is assumed to belong to line. The result T is the value such that POINT = LINE(1:3) + T * LINE(4:6). If POINT does not belong to LINE, the position of its orthogonal projection is computed instead.

T = linePosition3d(POINT, LINES) If LINES is an array of NL lines, return NL positions, corresponding to each line.

T = linePosition3d(POINTS, LINE) If POINTS is an array of NP points, return NP positions, corresponding to each point.

See also

lines3d, createLine3d, distancePointLine3d, projPointOnLine3d

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author : David Legland INRA - TPV URPOI - BIA IMASTE created the 17/02/2005.

Referenced by clipEdge3d(), and clipLine3d().

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