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Java source code of 'jhplot.jadraw.JaSLine'
/*
* Title: japlot.jaxodraw
* Description: Graphical user interface for drawing Feynman diagrams
* @author Daniele Binosi
* @author Lukas Theussl
Copyright (C) 2003-2006, Daniele Binosi and Lukas Theussl
See the file LICENSE in the source distribution home directory
for a full copy of the GPL (GNU General Public License).
This file is part of japlot.jaxodraw.
japlot.jaxodraw 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.
japlot.jaxodraw 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
*/
package jhplot.jadraw;
import japlot.jaxodraw.JaxoLineOptionsPanel;
import japlot.jaxodraw.JaxoMainPanel;
import java.awt.BasicStroke;
import java.awt.Dimension;
import org.freehep.graphics2d.VectorGraphics;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
/** A scalar line. */
public class JaSLine extends JaLineObject {
/**
*
*/
private static final long serialVersionUID = 1L;
/** Constructor: calls super() and initializes inflip to false.*/
public JaSLine() {
super();
setInflip(false);
}
/** Returns an exact copy of this JaSLine.
* @return A copy of this JaSLine.
*/
public final JaObject copy() {
JaSLine temp = new JaSLine();
temp.setX(getX());
temp.setY(getY());
temp.setColor(getColor());
temp.setStroke(getStroke());
temp.setDash(getDash());
temp.setArrow(isArrow());
temp.setFlip(isFlip());
temp.setInflip(getInflip());
temp.setDoubleLine(getDoubleLine());
temp.setDLSeparation(getDLSeparation());
temp.setSize(getWidth(), getHeight(), getRelw(), getRelh());
temp.setBoundingBox(getBoundingBox());
return temp;
}
/** Returns true if all serializable variables of this JaObject
* and those of the specified one are equal.
* @param comp A JaObject to compare with.
* @return True if the objects are equal, false otherwise.
*/
public final boolean isCopy(JaObject comp) {
boolean isCopy = false;
if (comp instanceof JaSLine) {
JaSLine line = (JaSLine) comp;
if ((line.getX() == getX()) && (line.getY() == getY())
&& line.getColor().equals(getColor())
&& (line.getStroke() == getStroke())
&& (line.getDash() == getDash())
&& (line.isArrow() == isArrow())
&& (line.isFlip() == isFlip())
&& (line.getInflip() == getInflip())
&& (line.getDoubleLine() == getDoubleLine())
&& (line.getDLSeparation() == getDLSeparation())
&& (line.getRelw() == getRelw())
&& (line.getRelh() == getRelh())) {
isCopy = true;
}
}
return isCopy;
}
/** The method that draws this JaSLine.
* @param g2 The graphics context where the JaSLine has to be drawn.
* @param drawToScreen A boolean variable that indicates whether the drawing is
* done on the screen or somewhere else. This is used for exporting/printing,
* where the object handles should not be painted, even if they are visible
* on the screen.
*/
public final void jaxoDraw(VectorGraphics g2, boolean drawToScreen) {
g2.setColor(getColor());
GeneralPath gptmp = new GeneralPath();
GeneralPath gp = getGeneralPath();
gp.reset();
double length =
Math.sqrt(((double) getWidth() * (double) getWidth())
+ ((double) getHeight() * (double) getHeight()));
if (isArrow()) {
if (getDoubleLine()) {
gp = dLineArrow(g2, getColor(), length,
(float) 3 * getStroke(), getInflip(), getDLSeparation());
gptmp.append(gp, false);
gp.reset();
gp = dLineArrow(g2, getColor(), length,
(float) 3 * getStroke(), getInflip(),
-getDLSeparation());
gptmp.append(gp, false);
} else {
gp = lineArrow(g2, getColor(), length,
(float) 4 * getStroke(), getInflip());
gptmp.append(gp, false);
}
}
float[] dashes = {getDash()};
g2.setStroke(new BasicStroke(getStroke(), BasicStroke.CAP_SQUARE,
BasicStroke.JOIN_MITER, 10.0f, dashes, 0.0f));
gp.reset();
if (getDoubleLine()) {
gp.moveTo(0.f, getDLSeparation());
gp.lineTo((float) length, getDLSeparation());
gp = trans(gp, 1.f);
gptmp.append(gp, false);
gp.reset();
gp.moveTo(0.f, -getDLSeparation());
gp.lineTo((float) length, -getDLSeparation());
gp = trans(gp, 1.f);
gptmp.append(gp, false);
} else {
gp.moveTo(0.f, 0.f);
gp.lineTo((float) length, 0.f);
gp = trans(gp, 1.f);
gptmp.append(gp, false);
}
g2.draw(gptmp);
Rectangle2D bb = gptmp.getBounds2D();
double[] bbox =
{bb.getMinX(), bb.getMinY(), bb.getMaxX(), bb.getMaxY()};
setBoundingBox(bbox);
}
/** The LaTeX command that is necessary to draw this JaSLine
* using the axodraw.sty package.
* @param scale A scale factor to translate Java coordinates to LaTeX coordinates.
* @param canvasDim The current dimension of the canvas.
* @return The corresponding axodraw LaTeX command.
*/
public final String latexCommand(float scale, Dimension canvasDim) {
int canvasHeight = canvasDim.height;
Point2D startPoint = getLaTexStartPoint(scale, canvasHeight);
Point2D endPoint = getLaTexEndPoint(scale, canvasHeight);
float dashSize = getLaTexDashSize(scale);
String command = "";
String base = "\\DashLine";
if (isArrow()) {
base = "\\DashArrowLine";
}
if (((int) endPoint.getX() == (int) startPoint.getX())
&& ((int) endPoint.getY() == (int) startPoint.getY())) {
command = "%";
} else if (getDoubleLine()) {
Point2D offSet = getOffSet(scale);
if (isFlip()) {
String command1 =
base + "("
+ D_FORMAT.format(endPoint.getX() + offSet.getX()) + ","
+ D_FORMAT.format(endPoint.getY() + offSet.getY()) + ")"
+ "(" + D_FORMAT.format(startPoint.getX() + offSet.getX())
+ "," + D_FORMAT.format(startPoint.getY() + offSet.getY())
+ ")" + "{" + D_FORMAT.format(dashSize) + "}";
String command2 =
base + "("
+ D_FORMAT.format(endPoint.getX() - offSet.getX()) + ","
+ D_FORMAT.format(endPoint.getY() - offSet.getY()) + ")"
+ "(" + D_FORMAT.format(startPoint.getX() - offSet.getX())
+ "," + D_FORMAT.format(startPoint.getY() - offSet.getY())
+ ")" + "{" + D_FORMAT.format(dashSize) + "}";
command =
command1.concat(command2.concat("%%JaxoDrawID:DoubleLine"
+ "(" + D_FORMAT.format(-getDLSeparation()) + ")"));
} else {
String command1 =
base + "("
+ D_FORMAT.format(startPoint.getX() + offSet.getX()) + ","
+ D_FORMAT.format(startPoint.getY() + offSet.getY()) + ")"
+ "(" + D_FORMAT.format(endPoint.getX() + offSet.getX())
+ "," + D_FORMAT.format(endPoint.getY() + offSet.getY())
+ ")" + "{" + D_FORMAT.format(dashSize) + "}";
String command2 =
base + "("
+ D_FORMAT.format(startPoint.getX() - offSet.getX()) + ","
+ D_FORMAT.format(startPoint.getY() - offSet.getY()) + ")"
+ "(" + D_FORMAT.format(endPoint.getX() - offSet.getX())
+ "," + D_FORMAT.format(endPoint.getY() - offSet.getY())
+ ")" + "{" + D_FORMAT.format(dashSize) + "}";
command =
command1.concat(command2.concat("%%JaxoDrawID:DoubleLine"
+ "(" + D_FORMAT.format(getDLSeparation()) + ")"));
}
} else {
if (isFlip()) {
command =
base + "(" + D_FORMAT.format(endPoint.getX()) + ","
+ D_FORMAT.format(endPoint.getY()) + ")" + "("
+ D_FORMAT.format(startPoint.getX()) + ","
+ D_FORMAT.format(startPoint.getY()) + ")" + "{"
+ D_FORMAT.format(dashSize) + "}";
} else {
command =
base + "(" + D_FORMAT.format(startPoint.getX()) + ","
+ D_FORMAT.format(startPoint.getY()) + ")" + "("
+ D_FORMAT.format(endPoint.getX()) + ","
+ D_FORMAT.format(endPoint.getY()) + ")" + "{"
+ D_FORMAT.format(dashSize) + "}";
}
}
return command;
}
/////////////////////////////////////////////////////////////////////////
//
// private auxiliary methods //
//
/////////////////////////////////////////////////////////////////////////
private Point2D getLaTexStartPoint(float scaleFactor, int canvasHeight) {
Point2D startVec = new Point2D.Float();
float x1;
float y1;
if (getRelw() <= 0) {
x1 = getX() - getRelw();
} else {
x1 = getX();
}
if (getRelh() >= 0) {
y1 = getY();
} else {
y1 = getY() - getRelh();
}
startVec.setLocation(x1 / scaleFactor,
(canvasHeight - y1) / scaleFactor);
return startVec;
}
private Point2D getLaTexEndPoint(float scaleFactor, int canvasHeight) {
Point2D endVec = new Point2D.Float();
float x2;
float y2;
if (getRelw() >= 0) {
x2 = getX() + getRelw();
} else {
x2 = getX();
}
if (getRelh() <= 0) {
y2 = getY();
} else {
y2 = getY() + getRelh();
}
endVec.setLocation(x2 / scaleFactor, (canvasHeight - y2) / scaleFactor);
return endVec;
}
private float getLaTexDashSize(float scaleFactor) {
float dshSize = getDash() / scaleFactor;
return dshSize;
}
private Point2D getOffSet(float scaleFactor) {
Point2D offSet = new Point2D.Float();
float lSep = getDLSeparation() / scaleFactor;
double theta =
(double) Math.atan2((float) getRelh(), (float) getRelw());
offSet.setLocation((float) lSep * Math.sin(theta),
(float) lSep * Math.cos(theta));
return offSet;
}
/** Brings up the edit panel that allows to change the parameters of
* this object.
* @return True if the editing actually changed the object, false if
* the object has not been changed.
*/
public final boolean editPanel() {
JaxoLineOptionsPanel lineop =
new JaxoLineOptionsPanel(JaxoMainPanel.SLINE);
lineop.initParams(this);
lineop.setPanelIcon("japlot/jaxodraw/icons/sline.gif");
lineop.setPanelTitle("Scalar_line_parameters");
baseEditPanel(lineop);
lineop.addLineArrowPanel(1, 0);
lineop.addLineMiddlePanel(2, 0);
lineop.addDlPanel(2, 1);
boolean hasChanged = lineop.showPanel();
return hasChanged;
}
}