refactor: remove unused logo dead code

This commit is contained in:
Arnaud Roques 2023-10-22 11:28:29 +02:00
parent 9a75a9c577
commit 8f5c3379ed
7 changed files with 2 additions and 846 deletions

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@ -3,4 +3,5 @@
This document catalogs code that was previously part of PlantUML but has since been deprecated and removed due to its lack of use.
It serves as a historical reference to ensure we remember and understand past decisions.
- [logo](https://github.com/plantuml/plantuml/tree/v1.2023.12/src/net/sourceforge/plantuml/logo)
- [logo language](https://github.com/plantuml/plantuml/tree/v1.2023.12/src/net/sourceforge/plantuml/logo)
- [mjpeg export](https://github.com/plantuml/plantuml/tree/v1.2023.12/src/net/sourceforge/plantuml/mjpeg)

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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.logo;
import java.util.HashMap;
import java.util.Map;
class LogoScanner {
// ::remove folder when __HAXE__
// ::remove folder when __CORE__
// ::remove folder when __MIT__ or __EPL__ or __BSD__ or __ASL__ or __LGPL__
final private Map<String, Integer> keywordTable = new HashMap<String, Integer>();
private char sourceString[];
private int sourceLength;
private int i;
public LogoScanner() {
keywordTable.put("forward", LogoToken.FORWARD);
keywordTable.put("fd", LogoToken.FORWARD);
keywordTable.put("back", LogoToken.BACK);
keywordTable.put("bk", LogoToken.BACK);
keywordTable.put("right", LogoToken.RIGHT);
keywordTable.put("rt", LogoToken.RIGHT);
keywordTable.put("left", LogoToken.LEFT);
keywordTable.put("lt", LogoToken.LEFT);
keywordTable.put("penup", LogoToken.PENUP);
keywordTable.put("pu", LogoToken.PENUP);
keywordTable.put("pendown", LogoToken.PENDOWN);
keywordTable.put("pd", LogoToken.PENDOWN);
keywordTable.put("hideturtle", LogoToken.HIDETURTLE);
keywordTable.put("ht", LogoToken.HIDETURTLE);
keywordTable.put("showturtle", LogoToken.SHOWTURTLE);
keywordTable.put("st", LogoToken.SHOWTURTLE);
keywordTable.put("clearscreen", LogoToken.CLEARSCREEN);
keywordTable.put("cs", LogoToken.CLEARSCREEN);
keywordTable.put("repeat", LogoToken.REPEAT);
keywordTable.put("rep", LogoToken.REPEAT);
keywordTable.put("to", LogoToken.TO);
keywordTable.put("setpc", LogoToken.SETPC);
keywordTable.put("pc", LogoToken.SETPC);
}
public int getPosition() {
return i;
}
public void setPosition(int newPosition) {
if (i >= 0 && i <= sourceLength) {
i = newPosition;
} else {
i = sourceLength;
}
}
public void setSourceString(String newSourceString) {
sourceLength = newSourceString.length();
sourceString = newSourceString.concat("\0").toCharArray();
i = 0;
}
public String getSourceString() {
return new String(sourceString);
}
public String getRestAsString() {
skipWhitespace();
final String rest = new String(sourceString, i, sourceLength - i + 1);
i = sourceLength;
return rest;
}
void skipWhitespace() {
char c;
do {
c = sourceString[i++];
} while (c == ' ' || c == '\t');
i--;
}
public LogoToken getToken() {
final LogoToken token = new LogoToken();
final StringBuilder lexeme = new StringBuilder();
if (i >= sourceLength) {
token.kind = LogoToken.END_OF_INPUT;
return token;
}
// Skip whitespace.
skipWhitespace();
char c = sourceString[i++];
// Now figure out what kind of token we've got.
if (c == '[' || c == ']') {
token.kind = c;
token.lexeme = String.valueOf(c);
} else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
do {
lexeme.append(c);
c = sourceString[i++];
} while ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
i--;
token.lexeme = lexeme.toString();
token.kind = LogoToken.IDENTIFIER;
final Integer keyword = keywordTable.get(token.lexeme);
if (keyword != null) {
token.kind = keyword;
}
} else if (c >= '0' && c <= '9') {
do {
lexeme.append(c);
c = sourceString[i++];
} while (c >= '0' && c <= '9');
boolean hasDecimalPart = false;
if (c == '.') {
do {
lexeme.append(c);
c = sourceString[i++];
} while (c >= '0' && c <= '9');
hasDecimalPart = true;
}
i--;
token.lexeme = lexeme.toString();
token.value = Float.parseFloat(token.lexeme);
if (hasDecimalPart) {
token.kind = LogoToken.FLOAT;
} else {
token.kind = LogoToken.INTEGER;
token.intValue = Integer.parseInt(token.lexeme);
}
} else if (c == 0) {
i--;
token.kind = LogoToken.END_OF_INPUT;
} else {
i--;
token.kind = LogoToken.INVALID_TOKEN;
}
return token;
}
}

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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.logo;
class LogoToken {
public final static int END_OF_INPUT = 256;
public final static int INVALID_TOKEN = 257;
public final static int IDENTIFIER = 258;
public final static int FLOAT = 259;
public final static int INTEGER = 270;
public final static int FORWARD = 260;
public final static int BACK = 261;
public final static int LEFT = 262;
public final static int RIGHT = 263;
public final static int PENUP = 264;
public final static int PENDOWN = 265;
public final static int HIDETURTLE = 266;
public final static int SHOWTURTLE = 267;
public final static int CLEARSCREEN = 268;
public final static int REPEAT = 269;
public final static int TO = 271;
public final static int SETPC = 272;
public int kind;
public String lexeme;
public float value;
public int intValue;
}

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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.logo;
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import net.sourceforge.plantuml.AbstractPSystem;
import net.sourceforge.plantuml.EmptyImageBuilder;
import net.sourceforge.plantuml.FileFormat;
import net.sourceforge.plantuml.FileFormatOption;
import net.sourceforge.plantuml.api.ImageDataSimple;
import net.sourceforge.plantuml.core.DiagramDescription;
import net.sourceforge.plantuml.core.ImageData;
import net.sourceforge.plantuml.core.UmlSource;
import net.sourceforge.plantuml.klimt.color.ColorMapper;
import net.sourceforge.plantuml.klimt.color.HColors;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.drawing.g2d.UGraphicG2d;
import net.sourceforge.plantuml.klimt.font.StringBounder;
import net.sourceforge.plantuml.png.PngIO;
public class PSystemLogo extends AbstractPSystem {
private final List<String> lines = new ArrayList<>();
public PSystemLogo(UmlSource source) {
super(source);
}
@Override
final protected ImageData exportDiagramNow(OutputStream os, int num, FileFormatOption fileFormat)
throws IOException {
final int width = 640;
final int height = 480;
final StringBounder stringBounder = FileFormat.PNG.getDefaultStringBounder();
final EmptyImageBuilder builder = new EmptyImageBuilder(fileFormat.getWatermark(), width, height, Color.WHITE,
stringBounder);
final BufferedImage im = builder.getBufferedImage();
final UGraphic ug = new UGraphicG2d(HColors.WHITE, ColorMapper.IDENTITY, stringBounder, builder.getGraphics2D(),
1.0, FileFormat.PNG);
((UGraphicG2d) ug).setBufferedImage(im);
final TurtleGraphicsPane turtleGraphicsPane = new TurtleGraphicsPane(width, height);
final TinyJavaLogo tinyJavaLogo = new TinyJavaLogo(turtleGraphicsPane);
for (String line : lines) {
tinyJavaLogo.doCommandLine(line);
}
turtleGraphicsPane.paint(ug);
PngIO.write(im, ColorMapper.IDENTITY, os, null, 96);
return new ImageDataSimple(im.getWidth(), im.getHeight());
}
// private GraphicStrings getGraphicStrings() throws IOException {
// final UFont font = new UFont("SansSerif", Font.PLAIN, 12);
// final GraphicStrings result = new GraphicStrings(strings, font,
// HtmlColorUtils.BLACK, HtmlColorUtils.WHITE,
// image,
// GraphicPosition.BOTTOM, false);
// result.setMinWidth(200);
// return result;
// }
public DiagramDescription getDescription() {
return new DiagramDescription("(Logo)");
}
public void doCommandLine(String line) {
lines.add(line);
}
}

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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.logo;
import net.sourceforge.plantuml.command.PSystemBasicFactory;
import net.sourceforge.plantuml.core.UmlSource;
public class PSystemLogoFactory extends PSystemBasicFactory<PSystemLogo> {
@Override
public PSystemLogo initDiagram(UmlSource source, String startLine) {
return null;
}
@Override
public PSystemLogo executeLine(UmlSource source, PSystemLogo system, String line) {
if (system == null && line.equalsIgnoreCase("logo")) {
return new PSystemLogo(source);
}
if (system == null) {
return null;
}
system.doCommandLine(line);
return system;
}
}

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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.logo;
import java.util.HashMap;
import java.util.Map;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
public class TinyJavaLogo {
private final LogoScanner scanner = new LogoScanner();
private final TurtleGraphicsPane turtleGraphicsPane;
private final Map<String, String> dictionary = new HashMap<String, String>();
private HColor penColor;
public TinyJavaLogo(TurtleGraphicsPane turtleGraphicsPane) {
this.turtleGraphicsPane = turtleGraphicsPane;
}
private void message(String messageText) {
// turtleGraphicsPane.message(messageText);
}
private void error(String messageText) {
turtleGraphicsPane.message("Error: " + messageText);
}
private void parseCommandBlock(int nestLevel) {
String commandName;
String code;
LogoToken token = scanner.getToken();
while (token.kind != LogoToken.END_OF_INPUT && token.kind != LogoToken.INVALID_TOKEN) {
switch (token.kind) {
case LogoToken.FORWARD:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.forward(token.value);
token = scanner.getToken();
} else {
error("FORWARD requires distance");
return;
}
break;
case LogoToken.BACK:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.back(token.value);
token = scanner.getToken();
} else {
error("BACK requires distance");
return;
}
break;
case LogoToken.LEFT:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.left(token.value);
token = scanner.getToken();
} else {
error("LEFT requires turn angle");
return;
}
break;
case LogoToken.RIGHT:
token = scanner.getToken();
if (token.kind == LogoToken.FLOAT || token.kind == LogoToken.INTEGER) {
turtleGraphicsPane.right(token.value);
token = scanner.getToken();
} else {
error("RIGHT requires turn angle");
return;
}
break;
case LogoToken.PENUP:
turtleGraphicsPane.penUp();
token = scanner.getToken();
break;
case LogoToken.PENDOWN:
turtleGraphicsPane.penDown();
token = scanner.getToken();
break;
case LogoToken.HIDETURTLE:
turtleGraphicsPane.hideTurtle();
token = scanner.getToken();
break;
case LogoToken.SHOWTURTLE:
turtleGraphicsPane.showTurtle();
token = scanner.getToken();
break;
case LogoToken.CLEARSCREEN:
turtleGraphicsPane.clearScreen();
token = scanner.getToken();
break;
case LogoToken.REPEAT:
token = scanner.getToken();
if (token.kind != LogoToken.INTEGER) {
error("REPEAT requires positive integer count");
return;
}
int count = token.intValue;
token = scanner.getToken();
if (token.kind != '[') {
error("REPEAT requires block in []");
return;
}
final int blockStart = scanner.getPosition();
while (count-- > 0) {
scanner.setPosition(blockStart);
parseCommandBlock(nestLevel + 1);
}
token = scanner.getToken();
break;
case LogoToken.TO:
token = scanner.getToken();
if (token.kind != LogoToken.IDENTIFIER) {
error("TO requires name for new definition");
return;
}
commandName = token.lexeme;
if (dictionary.get(commandName) == null) {
message("Defining new command " + commandName);
} else {
message("Redefining command " + commandName);
}
code = scanner.getRestAsString();
dictionary.put(commandName, code);
token = scanner.getToken();
break;
case LogoToken.IDENTIFIER:
commandName = token.lexeme;
code = dictionary.get(commandName);
if (code == null) {
error("Undefined command " + commandName);
return;
}
final String savedCommand = scanner.getSourceString();
final int savedPosition = scanner.getPosition();
scanner.setSourceString(code);
parseCommandBlock(0);
scanner.setSourceString(savedCommand);
scanner.setPosition(savedPosition);
token = scanner.getToken();
break;
case LogoToken.SETPC:
token = scanner.getToken();
String s = token.lexeme;
final HColor newPenColor = s == null ? null : HColorSet.instance().getColorOrWhite(s);
if (newPenColor == null) {
error("Unrecognized color name");
return;
}
penColor = newPenColor;
turtleGraphicsPane.setPenColor(penColor);
token = scanner.getToken();
break;
case '[':
token = scanner.getToken();
break;
case ']':
if (nestLevel == 0) {
error("] without matching [");
token = scanner.getToken();
return;
}
return;
default:
error("Unrecognized symbol in input");
return;
}
}
}
public void doCommandLine(String commandLine) {
message(commandLine);
scanner.setSourceString(commandLine);
parseCommandBlock(0);
}
}

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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.logo;
import java.awt.Font;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import java.util.List;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
import net.sourceforge.plantuml.klimt.color.HColors;
import net.sourceforge.plantuml.klimt.creole.Display;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.font.FontConfiguration;
import net.sourceforge.plantuml.klimt.font.UFont;
import net.sourceforge.plantuml.klimt.geom.HorizontalAlignment;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.shape.TextBlock;
import net.sourceforge.plantuml.klimt.shape.ULine;
import net.sourceforge.plantuml.klimt.shape.UPolygon;
import net.sourceforge.plantuml.klimt.sprite.SpriteContainerEmpty;
class TurtleGraphicsPane {
final private double width;
final private double height;
private double x;
private double y;
private double turtleDirection = 90;
private boolean penIsDown = true;
private boolean showTurtle = true;
private HColor penColor = HColors.BLACK;
private List<Rectangle2D.Double> lines = new ArrayList<Rectangle2D.Double>();
private List<HColor> colors = new ArrayList<>();
private String message;
public TurtleGraphicsPane(int width, int height) {
this.width = width;
this.height = height;
clearScreen();
}
public void clearScreen() {
x = width / 2;
y = -height / 2;
turtleDirection = 90;
lines.clear();
colors.clear();
}
private double dtor(double degrees) {
return degrees * Math.PI / 180.0;
}
private void drawTurtle(UGraphic ug) {
if (showTurtle == false) {
return;
}
final UPolygon poly = new UPolygon();
double size = 2;
double deltax = 4.5 * size;
poly.addPoint(0 * size - deltax, 0);
poly.addPoint(0 * size - deltax, -2 * size);
poly.addPoint(1 * size - deltax, -2 * size);
poly.addPoint(1 * size - deltax, -4 * size);
poly.addPoint(2 * size - deltax, -4 * size);
poly.addPoint(2 * size - deltax, -6 * size);
poly.addPoint(3 * size - deltax, -6 * size);
poly.addPoint(3 * size - deltax, -8 * size);
poly.addPoint(4 * size - deltax, -8 * size);
poly.addPoint(4 * size - deltax, -9 * size);
poly.addPoint(5 * size - deltax, -9 * size);
poly.addPoint(5 * size - deltax, -8 * size);
poly.addPoint(6 * size - deltax, -8 * size);
poly.addPoint(6 * size - deltax, -6 * size);
poly.addPoint(7 * size - deltax, -6 * size);
poly.addPoint(7 * size - deltax, -4 * size);
poly.addPoint(8 * size - deltax, -4 * size);
poly.addPoint(8 * size - deltax, -2 * size);
poly.addPoint(9 * size - deltax, -2 * size);
poly.addPoint(9 * size - deltax, 0);
poly.addPoint(0 * size - deltax, 0);
final double angle = -dtor(turtleDirection - 90);
poly.rotate(angle);
// ug.setAntiAliasing(false);
final HColorSet htmlColorSet = HColorSet.instance();
final HColor turtleColor1 = htmlColorSet.getColorOrWhite("OliveDrab");
final HColor turtleColor2 = htmlColorSet.getColorOrWhite("MediumSpringGreen");
ug.apply(turtleColor1).apply(turtleColor2.bg()).apply(new UTranslate(x, -y)).draw(poly);
// ug.setAntiAliasing(true);
}
public void showTurtle() {
showTurtle = true;
}
public void hideTurtle() {
showTurtle = false;
}
public void setPenColor(HColor newPenColor) {
penColor = newPenColor;
}
void addLine(double x1, double y1, double x2, double y2) {
lines.add(new Rectangle2D.Double(x1, y1, x2, y2));
colors.add(penColor);
}
public void forward(double distance) {
double angle = dtor(turtleDirection);
double newX = x + distance * Math.cos(angle);
double newY = y + distance * Math.sin(angle);
if (penIsDown) {
addLine(x, y, newX, newY);
x = newX;
y = newY;
} else {
x = newX;
y = newY;
}
}
public void back(double distance) {
forward(-distance);
}
public void left(double turnAngle) {
turtleDirection += turnAngle;
while (turtleDirection > 360) {
turtleDirection -= 360;
}
while (turtleDirection < 0) {
turtleDirection += 360;
}
}
public void right(double turnAngle) {
left(-turnAngle);
}
public void penUp() {
penIsDown = false;
}
public void penDown() {
penIsDown = true;
}
public void paint(UGraphic ug) {
int n = lines.size();
for (int i = 0; i < n; i++) {
final HColor color = colors.get(i);
final Rectangle2D.Double r = lines.get(i);
final ULine line = new ULine(r.width - r.x, -r.height + r.y);
ug.apply(color).apply(new UTranslate(r.x, -r.y)).draw(line);
}
drawTurtle(ug);
if (message != null) {
final FontConfiguration font = FontConfiguration.blackBlueTrue(UFont.build("", Font.PLAIN, 14));
final TextBlock text = Display.create(message).create(font, HorizontalAlignment.LEFT,
new SpriteContainerEmpty());
final XDimension2D dim = text.calculateDimension(ug.getStringBounder());
final double textHeight = dim.getHeight();
text.drawU(ug.apply(UTranslate.dy((height - textHeight))));
}
}
public void message(String messageText) {
this.message = messageText;
}
}