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WPCG::WP_Ray2D Class Reference
#include <WP_Ray2D.h>
List of all members.
Detailed Description
this class represents a 2D ray
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Author:
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Copyright (C) 2001 W.P. van Paassen peter@paassen.tmfweb.nl
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; see the file COPYING. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Constructor & Destructor Documentation
WPCG::WP_Ray2D::WP_Ray2D |
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[inline] |
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Parameters:
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p |
a WP_Point2D object representing the start point of the ray |
v |
a WP_Vector2D object representing the direction vector of the ray |
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Parameters:
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l |
a WP_Line2D object representing a 2D line from which a 2D ray is constructed |
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WPCG::WP_Ray2D::~WP_Ray2D |
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[inline] |
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Member Function Documentation
void WPCG::WP_Ray2D::draw |
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const |
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this function draws the 2D ray to the screen using OpenGL |
int WPCG::WP_Ray2D::intersection |
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const WP_Ray2D & |
r, |
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WP_Point2D & |
p |
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const |
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this function computes the intersection point of this ray and the given ray. See Chapter 4, page 186, Computer Graphics using OpenGL, F.S. Hill -
Parameters:
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r |
a WP_Ray2D object representing the ray which may intersect with this ray object |
p |
a WP_Point2D object which will be filled with the intersection point if one is found |
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Returns:
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-2 in case the rays overlap
-1 in case this ray exits from the ray r (compared to its normal)
0 in case this ray is parallel to ray r
1 in case this ray enters the ray r (compared to its normal) |
Member Data Documentation
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a WP_Vector2D object representing the directional vector of this 2D ray |
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a WP_Point2D object representing the start point of the 2D ray |
The documentation for this class was generated from the following files:
Generated on Tue Jan 28 20:26:42 2003 by
1.2.14 written by Dimitri van Heesch,
© 1997-2002