Posted by jfpauly on Nov 10, 2024; 4:51pm
URL: https://forum.jogamp.org/3D-loaders-2-questions-tp4043577p4043614.html

Loading 3ds files with 3ds2java.exe. from Pieter Bos.

This is a two steps process:
        1- 3ds file is converted to a c3d file.
        2- cd3 is then loaded.

The first step is made once only. Further loadings of the model are done from the c3d file.

    /**
     *

3ds files process

     * Theses files are first converted to c3d with 3ds2java.exe.
     * <br>The programù 3ds2java.exe must be in the same directory as the
     * 3ds file
     * <p>
     * To get texture files, they may be in a directory called textures,
     * or in the same directory.
     * <br>For instance :
     * <pre>
     *
     *          /------------+
     *          | models     | ________/------------+
     *          +------------+         |  modelname | ______ modelname.3ds
     *                                 +------------+ ______/------------+
     *                                                      | textures   | ___ xxx.JPG ....
     *                                                      +------------+
     *
     * </pre> modelname.c3d is written in the same directory and can now be
     * imported
     */

Here is the code to process 3ds

    private void jMenuItem17ActionPerformed(java.awt.event.ActionEvent evt) {                                            
        String path = tools.getFn();
        if (path == null) { // user cancel
            return;
        }
        File file = new File(path);
        String stuName = file.getName();                        // 3ds file name
        int point = stuName.lastIndexOf('.');                   // point position
        String root = stuName.substring(0, point);              // get left part

        //______Files controls_______________
        // 3ds2java.exe is in /dist directory
        File file3ds = new File(univers.distFile + "\\" + "3ds2java.exe");
        if (file3ds.exists() == false) {
            jTextArea1.setText("Please move 3ds2java.exe to /dist directory and try again");
            return;
        }
        //_______________________________
        // 3DS file is in /dist directory
        int slash = path.lastIndexOf("\\");             // right slash position
        String dir3ds = path.substring(0, slash);       // get user file directory
        if (dir3ds.equals(univers.distFile) == false) {        // file should be in same directory than 3ds2java.exe
            jTextArea1.setText("Please move " + stuName + " to /dist directory and try again");
            return;
        }
        // end of controls_______________
        String c3dName = root + ".c3d";                         // build cd3 name
        String cdCmd = "cmd cd " + univers.distFile;            // go to directory where 3ds2java should be
        String cmdStr = "3ds2java.exe " + stuName + " -o " + c3dName;   // build 3ds2java input command
        Runtime runtime = Runtime.getRuntime();                 // get runtime environment
        try {
            runtime.exec(cdCmd);                                // go directory
            Process process = runtime.exec(cmdStr);             // run 3ds2java
            process.waitFor();
        } catch (IOException | InterruptedException ex) {
            jTextArea1.setText("File error");
        }
        try {
            loadC3d(univers.distFile + "\\" + c3dName); // 3DS to C3d convert will use 3ds2java output
        } catch (IOException ex) {
            Logger.getLogger(DrawPanel.class.getName()).log(Level.SEVERE, null, ex);
        }
        jTextArea1.setText(path + "loaded.");
    }
________________________________________________________________________________________________________
 void loadC3d(String c3dName) throws IOException {
        Graf.graph2Tg(); // builds a graph to branch the model
        try { // call Loader3d class shown in next reply message
            Stud.readC3d(univers.animTg, c3dName);
        } catch (FileNotFoundException | IncorrectFormatException | NullPointerException e1) {
            messages(6);
        }
        univers.master.addChild(univers.pickGroup);
        jTextArea1.setText(c3dName + "loaded.");
    }
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