对于我的问题的背景,我正在使用有限元软件 COMSOL,您无需打开软件即可使用 java 运行该软件。因此,我试图将它与另一个用 java 编写的软件结合起来并在 Eclipse 中运行。我的问题是让 COMSOL 生成一个图像文件,比如在我的 2D 模拟桌面上。用于导出 *.txt 文件的代码几乎相同并且有效,但它不适用于图像,我想看看是否有人可以帮助我考虑在哪里寻找以弄清楚如何完成此操作。
我附上了##代码片段,我认为这些片段足以解释我正在尝试做的事情,而不会让你们所有人陷入困境。
import com.comsol.model.*;
import com.comsol.model.util.*;
/** Model exported on Jul 24 2012, 13:33 by COMSOL 4.2.1.110. */
public class COMSOL_Model {
public static Model run() {
Model model = ModelUtil.create("Model");
//code to set up and solve the model
// and then at the end, you tell COMSOL what to export...
//this code works...
model.result("pg1").feature("glob1").set("data", "dset"+i);
model.result().export("plot1").set("filename", C:\\Users\\Alex\\Desktop\\temp_data_"+i+".txt");
model.result().export("plot1").run();
//this code does NOT work
model.result("pg2").feature("surf1").set("data", "dset"+i);
model.result("pg2").set("window", "window"+i);
model.result("pg2").run();
model.result().export().create("img"+i, "Image2D");
model.result("pg2").set("window", "graphics");
model.result("pg2").set("windowtitle", "");
model.result().export("img"+i)
.set("pngfilename", "C:\\Users\\Alex\\Desktop\\surface.png");
model.result().export("img1").run();
所以我的第一个问题是,有人可以从理论上或用代码解释为什么这不起作用吗?我猜是因为我需要一个像“ImageIO.write”这样的特殊方法。任何提示或想法将不胜感激。
我尝试通过 COMSOL 提供的代码来解决这个问题,以创建一个显示模拟进度的 GUI,然后在 GUI 上打印例如 2D/3D 图像。我在一个大的“for”循环中使用了它,其中java为每次迭代创建了一个GUI和一个新图。问题是,我可以让java复制框架和进度条以及GUI的所有内容,除了打印在上面的图片,我想看看是否有人有任何建议。我的一个想法是让java截取屏幕截图,然后裁剪图像。有什么想法吗?
以下是我认为必要的带有注释的大部分代码:
import com.comsol.model.*;
import com.comsol.model.util.*;
import com.comsol.modelguiswing.SwingGraphicsPanel;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Transparency;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.*;
public class reuse_solver {
//paste this into configurations
//C:\Program Files\COMSOL\COMSOL42a\lib\win64
private Model model;
public static void main(String[] args) {
reuse_solver recycler= new reuse_solver();
recycler.init();
recycler.looper();
}
public void looper() {
model = original.run();
for (int iSimul = 1; iSimul<5; iSimul++){
start(iSimul);
}
}
//this is the code to have eclipse run comsol
private void init() {
ModelUtil.initStandalone(true);
}
private void start(int iSimul) {
if (iSimul==1){
Progress(iSimul);
synchronized(model){
try {
model.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}else{
Studier(iSimul);
Progress(iSimul);
synchronized(model){
try {
model.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
/this creates the GUI and then runs COMSOL, showing the progress
private void Progress(int i){
final String sol = "sol"+i;
final int k = i;
lookandfeel();
final JFrame frame = new JFrame("This is an example GUI for Frying");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(1000, 730);
final JPanel mainPanel = new JPanel();
frame.getContentPane().add(mainPanel);
mainPanel.setLayout(new BorderLayout());
final SwingGraphicsPanel graphicsPanel = new SwingGraphicsPanel("window"+i, "Window"+i);
mainPanel.add(graphicsPanel, BorderLayout.CENTER);
SwingProgressPanel progressPanel =new SwingProgressPanel();
mainPanel.add(progressPanel, BorderLayout.PAGE_END);
progressPanel.updateProgressLog("Starting\n"+i+"\n");
ProgressWorker.setContext(new SwingDemoProgressContext(progressPanel));
final int pWidth = frame.getWidth();
final int pHeight = frame.getHeight();
frame.setVisible(true);
ProgressWorker.run(new Runnable() {
public void run() {
model.sol(sol).feature().create("t1","PlotWhileSolving");
model.sol(sol).runAll();
exporter(k, pHeight, pWidth, frame);
}
});
}
//code to help COMSOL run in a loop
private void Studier(int i) {
//COMSOL code goes here
}
private void exporter(int i, int pHeight, int pWidth, JFrame frame) {
//this code will tell java to put the image in the GUI window once the simulation is done
model.result("pg2").feature("surf1").set("data", "dset"+i);
model.result("pg2").set("window", "window"+i);
model.result("pg2").run();
// this will generate an image on my desktop, but it will not put the image that was put in the GUI
BufferedImage bi = new BufferedImage(pWidth,pHeight, BufferedImage.TYPE_INT_RGB);
Graphics g = bi.createGraphics();
frame.paint(g); //this == JComponent
g.dispose();
try{ImageIO.write(bi,"png",new File("C:\\Users\\Alex\\Desktop\\surf_"+i+".png"));}catch (Exception e) {}
synchronized(model){
model.notify();
}
}
private void lookandfeel() {
try {
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
}
catch (Exception e) {
}
}
}