所以基本上我需要制作星号形状,如下图所示:
所以这是我目前的解决方案。
import java.applet.Applet;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Stroke;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class ThreePointTen extends Applet{
public void init(String[] a) {
}
public void paint(Graphics g){
char a = '*';
//square
g.drawString("**********", 25, 25);
g.drawString("* *", 25, 35);
g.drawString("* *", 25, 45);
g.drawString("* *", 25, 55);
g.drawString("* *", 25, 65);
g.drawString("* *", 25, 75);
g.drawString("* *", 25, 85);
g.drawString("* *", 25, 95);
g.drawString("**********", 25, 105);
//oval
g.drawString("***", 175, 25);
g.drawString("* * ", 165, 35);
g.drawString("* * ", 158, 45);
g.drawString("* * ", 158, 55);
g.drawString("* * ", 158, 65);
g.drawString("* * ", 158, 75);
g.drawString("* * ", 158, 85);
g.drawString("* * ", 165, 95);
g.drawString("***", 175, 105);
}
}
我基本上只是猜测如何制作每个形状以及它们去哪里。这种方法非常慢且效率低下。我想知道是否可以使用g.draw创建一个形状,然后一些如何与一个角色排成一行。
答案 0 :(得分:3)
您可以创建一个内部由这些星号/星星组成的特殊Stroke
。然后,您可以使用stroke.createStrokedShape(shape)
创建一个表示另一个形状的新形状,并使用此笔划绘制。
在http://www.jhlabs.com/java/java2d/strokes/有一个(Apache许可的)此类笔画的实现(也包含在下面的代码中,包含链接和版权信息)
结果可能如下所示:
使用以下独立示例创建的:
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.geom.FlatteningPathIterator;
import java.awt.geom.GeneralPath;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class StarShapes
{
public static void main(String[] args)
{
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
createAndShowGUI();
}
});
}
private static void createAndShowGUI()
{
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(new StarShapesPanel());
f.setSize(600,400);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
class StarShapesPanel extends JPanel
{
@Override
protected void paintComponent(Graphics gr)
{
super.paintComponent(gr);
Graphics2D g = (Graphics2D)gr;
g.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Font starFont = new Font("Monospaced", Font.BOLD, 20);
Shape starShape = createShape(starFont, "*");
Stroke stroke = new ShapeStroke(new Shape[] { starShape }, 12.0f);
Font textFont = new Font("Serif", Font.PLAIN, 250);
Shape textShape = createShape(textFont, "Stars!");
g.translate(10, 250);
Shape strokedTextShape =
stroke.createStrokedShape(textShape);
g.fill(strokedTextShape);
}
private static Shape createShape(Font font, String s)
{
FontRenderContext fontRenderContext =
new FontRenderContext(null,true,true);
GlyphVector glyphVector =
font.createGlyphVector(fontRenderContext, s);
return glyphVector.getOutline();
}
}
//============================================================================
// From http://www.jhlabs.com/java/java2d/strokes/
/*
Copyright 2006 Jerry Huxtable
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
class ShapeStroke implements Stroke {
private Shape shapes[];
private float advance;
private boolean stretchToFit = false;
private boolean repeat = true;
private AffineTransform t = new AffineTransform();
private static final float FLATNESS = 1;
public ShapeStroke( Shape shapes, float advance ) {
this( new Shape[] { shapes }, advance );
}
public ShapeStroke( Shape shapes[], float advance ) {
this.advance = advance;
this.shapes = new Shape[shapes.length];
for ( int i = 0; i < this.shapes.length; i++ ) {
Rectangle2D bounds = shapes[i].getBounds2D();
t.setToTranslation( -bounds.getCenterX(), -bounds.getCenterY() );
this.shapes[i] = t.createTransformedShape( shapes[i] );
}
}
public Shape createStrokedShape( Shape shape ) {
GeneralPath result = new GeneralPath();
PathIterator it = new FlatteningPathIterator( shape.getPathIterator( null ), FLATNESS );
float points[] = new float[6];
float moveX = 0, moveY = 0;
float lastX = 0, lastY = 0;
float thisX = 0, thisY = 0;
int type = 0;
boolean first = false;
float next = 0;
int currentShape = 0;
int length = shapes.length;
float factor = 1;
while ( currentShape < length && !it.isDone() ) {
type = it.currentSegment( points );
switch( type ){
case PathIterator.SEG_MOVETO:
moveX = lastX = points[0];
moveY = lastY = points[1];
result.moveTo( moveX, moveY );
first = true;
next = 0;
break;
case PathIterator.SEG_CLOSE:
points[0] = moveX;
points[1] = moveY;
// Fall into....
case PathIterator.SEG_LINETO:
thisX = points[0];
thisY = points[1];
float dx = thisX-lastX;
float dy = thisY-lastY;
float distance = (float)Math.sqrt( dx*dx + dy*dy );
if ( distance >= next ) {
float r = 1.0f/distance;
float angle = (float)Math.atan2( dy, dx );
while ( currentShape < length && distance >= next ) {
float x = lastX + next*dx*r;
float y = lastY + next*dy*r;
t.setToTranslation( x, y );
t.rotate( angle );
result.append( t.createTransformedShape( shapes[currentShape] ), false );
next += advance;
currentShape++;
if ( repeat )
currentShape %= length;
}
}
next -= distance;
first = false;
lastX = thisX;
lastY = thisY;
break;
}
it.next();
}
return result;
}
}
答案 1 :(得分:0)
对于基本实现,您需要创建一个&#34;位图&#34;要绘制的像素数。因此,您可以创建一个简单的形状图片,然后创建一个小算法来绘制每个&#34; x&#34;在你的形状。
类似的东西:
import java.awt.*;
import java.awt.event.*;
//import java.awt.image.*;
//import java.util.*;
import java.util.List;
import java.util.ArrayList;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
//import java.beans.*;
import javax.swing.border.*;
//import javax.swing.plaf.*;
//import javax.swing.text.*;
//import javax.swing.table.*;
//import java.io.*;
//import javax.imageio.*;
//import java.awt.geom.*;
public class PaintShape extends JPanel
{
private final static String[] SQUARE =
{
"xxxxxxxxx",
"x x",
"x x",
"x x",
"x x",
"x x",
"x x",
"x x",
"xxxxxxxxx"
};
private final static String[] ARROW =
{
" x ",
" xxx ",
" xxxxx ",
" x ",
" x ",
" x ",
" x ",
" x ",
" x "
};
private ArrayList<String[]> shapes = new ArrayList<String[]>();
private String outlineCharacter = "*";
public void addShape(String[] shape)
{
this.shapes.add( shape );
}
public void setOutlineCharacter(String outlineCharacter)
{
this.outlineCharacter = outlineCharacter;
}
@Override
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
int outlineCharacterWidth = 10;
int lineHeight = 10;
int shapeStart = 0;
int x = shapeStart;
int y = 0;
for (String[] shape: shapes)
{
y = lineHeight;
for (int row = 0; row < shape.length; row++)
{
String bitmap = shape[row];
x = shapeStart;
for (int column = 0; column < bitmap.length(); column++)
{
if (bitmap.charAt(column) == 'x')
{
g.drawString(outlineCharacter, x, y);
}
x += outlineCharacterWidth;
}
y += lineHeight;
}
x += 20; // gap between shapes
shapeStart = x;
}
}
private static void createAndShowGUI()
{
PaintShape paint = new PaintShape();
paint.addShape(PaintShape.SQUARE);
paint.addShape(PaintShape.ARROW);
paint.addShape(PaintShape.SQUARE);
JFrame frame = new JFrame("PaintShape");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(paint);
frame.setLocationByPlatform( true );
frame.setSize(200, 200);
frame.setVisible( true );
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowGUI();
}
});
}
}