105 lines
2.4 KiB
Java
105 lines
2.4 KiB
Java
/*
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Copyright 2006 Rene Grothmann, modified by Eric Hakenholz
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This file is part of C.a.R. software.
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C.a.R. is a free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, version 3 of the License.
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C.a.R. is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package rene.zirkel.objects;
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// file: Circle3Object.java
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import java.util.Enumeration;
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import rene.util.xml.XmlWriter;
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import rene.gui.Global;
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import rene.zirkel.construction.Construction;
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import rene.zirkel.construction.ConstructionException;
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import rene.zirkel.expression.InvalidException;
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public class Circle3Object extends PrimitiveCircleObject {
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protected PointObject P1, P2;
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public Circle3Object(final Construction c, final PointObject p1,
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final PointObject p2, final PointObject p3) {
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super(c, p3);
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P1 = p1;
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P2 = p2;
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validate();
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updateText();
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}
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@Override
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public String getTag() {
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return "Circle3";
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}
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@Override
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public void updateText() {
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setText(text3(Global.name("text.circle3"), M.getName(), P1.getName(),
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P2.getName()));
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}
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@Override
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public void validate() {
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super.validate();
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if (!M.valid() || !P1.valid() || !P2.valid()) {
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Valid = false;
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return;
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} else {
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Valid = true;
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X = M.getX();
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Y = M.getY();
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// compute normalized vector in the direction of the line:
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final double DX = P2.getX() - P1.getX(), DY = P2.getY() - P1.getY();
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R = Math.sqrt(DX * DX + DY * DY);
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if (R < 0) {
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R = 0;
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}
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}
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}
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@Override
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public void printArgs(final XmlWriter xml) {
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xml.printArg("from", P1.getName());
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xml.printArg("to", P2.getName());
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super.printArgs(xml);
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}
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@Override
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public double getValue() throws ConstructionException {
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if (!Valid)
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throw new InvalidException("exception.invalid");
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else
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return R;
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}
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@Override
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public Enumeration depending() {
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super.depending();
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return depset(P1, P2);
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}
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@Override
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public void translate() {
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P1 = (PointObject) P1.getTranslation();
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P2 = (PointObject) P2.getTranslation();
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super.translate();
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}
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}
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