Java 多边形的纹理/背景图像
我正在使用JavaSwing编写一个带有六边形瓷砖的平铺游戏板。我能用软线画多边形 现在我想给这些六边形添加背景图像,我完全不知道怎么做。是一个在矩形上绘制背景的教程,但如何在六边形上绘制背景呢 创建六边形使用。可能是因为这个。 将形状设置为Graphics2D对象的剪辑。 画这个图像。 使用、a将形状移动到下一个位置。 冲洗并重复。 像这样:Java 多边形的纹理/背景图像,java,swing,textures,polygon,Java,Swing,Textures,Polygon,我正在使用JavaSwing编写一个带有六边形瓷砖的平铺游戏板。我能用软线画多边形 现在我想给这些六边形添加背景图像,我完全不知道怎么做。是一个在矩形上绘制背景的教程,但如何在六边形上绘制背景呢 创建六边形使用。可能是因为这个。 将形状设置为Graphics2D对象的剪辑。 画这个图像。 使用、a将形状移动到下一个位置。 冲洗并重复。 像这样: import java.awt.*; import java.awt.geom.AffineTransform; import java.awt.geo
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.image.BufferedImage;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.*;
class TexturedShape {
public static BufferedImage getTexturedImage(
BufferedImage src, Shape shp, int x, int y) {
Rectangle r = shp.getBounds();
// create a transparent image with 1 px padding.
BufferedImage tmp = new BufferedImage(
r.width+2,r.height+2,BufferedImage.TYPE_INT_ARGB);
// get the graphics object
Graphics2D g = tmp.createGraphics();
// set some nice rendering hints
g.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.setRenderingHint(
RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_QUALITY);
// create a transform to center the shape in the image
AffineTransform centerTransform = AffineTransform.
getTranslateInstance(-r.x+1, -r.y+1);
// set the transform to the graphics object
g.setTransform(centerTransform);
// set the shape as the clip
g.setClip(shp);
// draw the image
g.drawImage(src, x, y, null);
// clear the clip
g.setClip(null);
// draw the shape as an outline
g.setColor(Color.RED);
g.setStroke(new BasicStroke(1f));
g.draw(shp);
// dispose of any graphics object we explicitly create
g.dispose();
return tmp;
}
public static Shape getPointedShape(int points, int radius) {
double angle = Math.PI * 2 / points;
GeneralPath p = new GeneralPath();
for (int ii = 0; ii < points; ii++) {
double a = angle * ii;
double x = (Math.cos(a) * radius) + radius;
double y = (Math.sin(a) * radius) + radius;
if (ii == 0) {
p.moveTo(x, y);
} else {
p.lineTo(x, y);
}
}
p.closePath();
return p;
}
public static void main(String[] args) throws Exception {
URL url = new URL("http://i.stack.imgur.com/7bI1Y.jpg");
BufferedImage bi = ImageIO.read(url);
Shape hxgn = getPointedShape(6, 32);
final BufferedImage txtr = getTexturedImage(bi, hxgn, -200, -120);
Runnable r = new Runnable() {
@Override
public void run() {
JOptionPane.showMessageDialog(null,
new JLabel(new ImageIcon(txtr)));
}
};
// Swing GUIs should be created and updated on the EDT
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater(r);
}
}
创建六边形使用。可能是因为这个。
将形状设置为Graphics2D对象的剪辑。
画这个图像。
使用、a将形状移动到下一个位置。
冲洗并重复。
像这样:
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.image.BufferedImage;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.*;
class TexturedShape {
public static BufferedImage getTexturedImage(
BufferedImage src, Shape shp, int x, int y) {
Rectangle r = shp.getBounds();
// create a transparent image with 1 px padding.
BufferedImage tmp = new BufferedImage(
r.width+2,r.height+2,BufferedImage.TYPE_INT_ARGB);
// get the graphics object
Graphics2D g = tmp.createGraphics();
// set some nice rendering hints
g.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.setRenderingHint(
RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_QUALITY);
// create a transform to center the shape in the image
AffineTransform centerTransform = AffineTransform.
getTranslateInstance(-r.x+1, -r.y+1);
// set the transform to the graphics object
g.setTransform(centerTransform);
// set the shape as the clip
g.setClip(shp);
// draw the image
g.drawImage(src, x, y, null);
// clear the clip
g.setClip(null);
// draw the shape as an outline
g.setColor(Color.RED);
g.setStroke(new BasicStroke(1f));
g.draw(shp);
// dispose of any graphics object we explicitly create
g.dispose();
return tmp;
}
public static Shape getPointedShape(int points, int radius) {
double angle = Math.PI * 2 / points;
GeneralPath p = new GeneralPath();
for (int ii = 0; ii < points; ii++) {
double a = angle * ii;
double x = (Math.cos(a) * radius) + radius;
double y = (Math.sin(a) * radius) + radius;
if (ii == 0) {
p.moveTo(x, y);
} else {
p.lineTo(x, y);
}
}
p.closePath();
return p;
}
public static void main(String[] args) throws Exception {
URL url = new URL("http://i.stack.imgur.com/7bI1Y.jpg");
BufferedImage bi = ImageIO.read(url);
Shape hxgn = getPointedShape(6, 32);
final BufferedImage txtr = getTexturedImage(bi, hxgn, -200, -120);
Runnable r = new Runnable() {
@Override
public void run() {
JOptionPane.showMessageDialog(null,
new JLabel(new ImageIcon(txtr)));
}
};
// Swing GUIs should be created and updated on the EDT
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater(r);
}
}
请您解释一下,为Graphics2D对象设置形状作为剪辑好吗?我一点也不明白,意识到我忘记了一两个步骤,我决定通过实现它来对我的列表进行“酸性测试”。请参见以上代码中的完整实现。能否请您进一步解释将形状设置为Graphics2D对象的剪辑?我一点也不明白,意识到我忘记了一两个步骤,我决定通过实现它来对我的列表进行“酸性测试”。请参见以上代码中的完整实现。