Parabola Copyright (C) 2003 Catalin Patulea (catalins@vv.carleton.ca)

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; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

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This program, given three non-colinear points, calculates the coefficients
of a parabola passing through all of these three points. It also does this
interactively. The user is allowed to drag the three points, while the
parabola is progressively redrawn.

There are three ways of modifying the points' locations:
1) Dragging
The user may drag while holding the left mouse button.

2) Locking
If the user presses the right mouse button while the mouse pointer is
positionned over a point, the point will become locked to the mouse pointer.
Any mouse movement will reflect on the position of the point. To exit
locking mode, right-click again.

3) Manual co-ordinate modification
The user can input new co-ordinate values in the boxes on top. These values
must be integers.

The source code is distributed in the form of a Microsoft Visual Studio 6.0
project. It is recommended to use this environment to compile this program.
For viewing the source code, however, you can simply open Parabola.c in your
favourite text editor!

For updates, and the source code, please visit:
http://vv.carleton.ca/~catalins/