借助图形控件Aspose.PSD，在 Java 中绘制几何形状-控件新闻-慧都网

借助图形控件Aspose.PSD，在 Java 中绘制几何形状

翻译|行业资讯|编辑：胡涛|2024-09-02 11:16:40.863|阅读 11 次

概述：这篇博文将更进一步，向您展示如何在 Java 中绘制几何形状

Java绘图库安装

现在，您可以转到此 安装指南查看所有提到的详细信息。但是，您可以在此处下载 JAR 文件。

Maven 配置：

<repositories>
<repository>
<id>snapshots</id>
<name>repo</name>
<url>//repository.aspose.com/repo/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-psd</artifactId>
<version>24.4</version>
<classifier>jdk16</classifier>
</dependency>
</dependencies>

java绘图库安装

在 Java 中绘制矩形 - 代码示例

安装完成后，您可以按照以下步骤操作：

创建BmpOptions类的实例。
调用setBitsPerPixel方法来设置每像素的位数。
创建Image类的实例并用PsdImage类的对象初始化它。
使用Image 类的对象实例化Graphics类的实例。
通过调用getYellow方法设置图像的背景颜色。
drawRectangle方法将绘制一个矩形。
通过调用保存方法将图像导出为BMP文件格式。

以下代码示例演示了如何使用 Aspose.PSD for Java 绘制矩形：

public class Main {
// Drawing rectangle in java
public static void main(String[] args) throws Exception {

String outpath = "/files/rectangle.bmp";
// Create an instance of BmpOptions class.
BmpOptions saveOptions = new BmpOptions();
// Invoke the setBitsPerPixel method to set the bits per pixel.
saveOptions.setBitsPerPixel(32);
// Create an instance of Image class and initialize it with the object of PsdImage class.
try (PsdImage image = new PsdImage(100, 100)) {
// Instantiate an instance of the Graphics class with the object of the Image class.
Graphics graphic = new Graphics(image);
// Set the background color of the image by calling the getYellow method.
graphic.clear(Color.getYellow());
// The drawRectangle method will draw a rectangle.
graphic.drawRectangle(new Pen(Color.getRed()), new RectangleF(30, 10, 40, 80));
graphic.drawRectangle(new Pen(new SolidBrush(Color.getBlue())), new RectangleF(10, 30, 80, 40));
// Export image to bmp file format by calling the save method.
image.save(outpath, saveOptions);
}
}
}

输出：

如何绘制矩形

通过编程绘制圆弧 - 代码示例

类似地，您可以按照下面提到的代码片段在 Java 中绘制圆弧：

public class Main {
// Draw an Arc
public static void main(String[] args) throws Exception {
String outpath = "/file/arc.bmp";
// Create an instance of BmpOptions class and invoke the setBitsPerPixel method to set the bits per pixel. .
BmpOptions saveOption = new BmpOptions();
saveOption.setBitsPerPixel(32);
// Create an instance of Image class and initialize it with the object of PsdImage class.
try (PsdImage image = new PsdImage(100, 100)) {
// Create and initialize an instance of Graphics class and clear Graphics surface
Graphics graphic = new Graphics(image);
graphic.clear(Color.getYellow());
// Draw an arc shape by specifying the Pen object having red black color and coordinates, height, width, start & end angles
int width = 100;
int height = 200;
int startAngle = 45;
int sweepAngle = 270;
// Draw arc to screen and save all changes.
graphic.drawArc(new Pen(Color.getBlack()), 0, 0, width, height, startAngle, sweepAngle);
// Save the image to bmp file format.
image.save(outpath, saveOption);
}
}
}

输出：

画圆弧