/*-
 * #%L
 * Scenery-backed 3D visualization package for ImageJ.
 * %%
 * Copyright (C) 2016 - 2021 SciView developers.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * #L%
 */
package sc.iview.commands.file;

import java.io.File;

import org.scijava.command.Command;
import org.scijava.log.LogService;
import org.scijava.plugin.Menu;
import org.scijava.plugin.Parameter;
import org.scijava.plugin.Plugin;
import org.scijava.widget.FileWidget;

import sc.iview.SciView;

import graphics.scenery.Mesh;
import sc.iview.Utils;

import static sc.iview.commands.MenuWeights.*;

/**
 * Command to export a STL of the currently active Node
 *
 * @author Kyle Harrington
 *
 */
@Plugin(type = Command.class, menuRoot = "SciView", //
        menu = { @Menu(label = "File", weight = FILE), //
                 @Menu(label = "Export", weight = FILE_EXPORT), //
                 @Menu(label = "STL...", weight = FILE_EXPORT_STL) })
public class ExportSTL implements Command {

    @Parameter
    private LogService logService;

    @Parameter
    private SciView sciView;

    @Parameter(style = FileWidget.SAVE_STYLE)
    private File stlFile = new File( "" );

    @Override
    public void run() {
        if( sciView.getActiveNode() instanceof Mesh ) {
            Mesh mesh = ( Mesh ) sciView.getActiveNode();

            if( mesh != null ) {
                try {
                    Utils.writeSCMesh( stlFile.getAbsolutePath(), mesh );
                } catch( final Exception e ) {
                    logService.trace( e );
                }
            }
        }
    }

}

/*-
 * #%L
 * Scenery-backed 3D visualization package for ImageJ.
 * %%
 * Copyright (C) 2016 - 2021 SciView developers.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * #L%
 */
package sc.iview.commands.file;

import java.io.File;

import org.scijava.command.Command;
import org.scijava.log.LogService;
import org.scijava.plugin.Menu;
import org.scijava.plugin.Parameter;
import org.scijava.plugin.Plugin;
import org.scijava.widget.FileWidget;

import sc.iview.SciView;

import graphics.scenery.Mesh;
import sc.iview.Utils;

import static sc.iview.commands.MenuWeights.*;

/**
 * Command to export a STL of the currently active Node
 *
 * @author Kyle Harrington
 *
 */
@Plugin(type = Command.class, menuRoot = "SciView", //
        menu = { @Menu(label = "File", weight = FILE), //
                 @Menu(label = "Export", weight = FILE_EXPORT), //
                 @Menu(label = "STL...", weight = FILE_EXPORT_STL) })
public class ExportSTL implements Command {

    @Parameter
    private LogService logService;

    @Parameter
    private SciView sciView;

    @Parameter(style = FileWidget.SAVE_STYLE)
    private File stlFile = new File( "" );

    @Parameter
    private boolean useMeshScale = false;

    @Override
    public void run() {
        if( sciView.getActiveNode() instanceof Mesh ) {
            Mesh mesh = ( Mesh ) sciView.getActiveNode();

            if( mesh != null ) {
                try {
                    Utils.writeSCMesh( stlFile.getAbsolutePath(), mesh, useMeshScale );
                } catch( final Exception e ) {
                    logService.trace( e );
                }
            }
        }
    }

}

Add UI for ExportSTL command