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// Tags: JDK1.2
// Copyright (C) 2003 Sascha Brawer <brawer@dandelis.ch>
// This file is part of Mauve.
// Mauve 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, or (at your option)
// any later version.
// Mauve 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 Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA. */
package gnu.testlet.java.awt.geom.CubicCurve2D;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
import java.awt.geom.CubicCurve2D;
/**
* Checks whether the various CubicCurve2D.getFlatness methods work
* correctly.
*
* @author Sascha Brawer (brawer@dandelis.ch)
*/
public class getFlatness
implements Testlet
{
private TestHarness harness;
public void test(TestHarness harness)
{
this.harness = harness;
// Check 1: eight doubles, collinear
chkeps(CubicCurve2D.getFlatness(1, 2, 3, 4, 5, 6, 7, 8), 0);
// Check 2: eight doubles, collinear (C1 and C2 swapped)
chkeps(CubicCurve2D.getFlatness(1, 2, 5, 6, 3, 4, 7, 8), 0);
// Check 3: eight doubles, collinear (C2 and P2 swapped)
chkeps(CubicCurve2D.getFlatness(1, 2, 3, 4, 7, 8, 5, 6),
2.8284271247461903);
// Check 4: eight doubles, not collinear
chkeps(CubicCurve2D.getFlatness(10, -20, 3, 4, 5, 6, 40, 0),
24.40680863391008);
// Check 5: double[], not collinear
double[] d = new double[] {2, 100, -200, 30, 44, 5, 600, 77, 18981};
chkeps(CubicCurve2D.getFlatness(d, 1), 94.04064976860437);
// Check 6: Method on CubicCurve2D, degenerated to point
chkeps((new CubicCurve2D.Double()).getFlatness(), 0);
// Check 7: Method on CubicCurve2D, not collinear
chkeps((new CubicCurve2D.Double(9,8,1,2,-4,0,1311,2332)).getFlatness(),
15.264337522473747);
}
private void chkeps(double a, double b)
{
if (Math.abs(a - b) > 1e-7)
harness.check(a, b);
else
harness.check(true);
}
}
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