bundles/addons/org.eclipse.apogy.addons.sensors.fov.ui.jme3/src/org/eclipse/apogy/addons/sensors/fov/ui/jme3/utils/ConicalFieldOfViewImageProjectorControl.java

package org.eclipse.apogy.addons.sensors.fov.ui.jme3.utils;
/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * 	 	 Pierre Allard - initial API and implementation
 * 	 	 Regent L'Archeveque
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;

import org.eclipse.apogy.addons.sensors.fov.ConicalFieldOfView;
import org.eclipse.apogy.addons.sensors.fov.ui.jme3.scene_objects.ProjectorData;
import org.eclipse.apogy.common.images.AbstractEImage;
import org.eclipse.apogy.common.images.EImagesUtilities;
import org.eclipse.apogy.common.topology.ui.jme3.JME3Application;
import org.eclipse.swt.graphics.RGB;

import com.jme3.renderer.Camera;

public class ConicalFieldOfViewImageProjectorControl
		extends AbstractFieldOfViewImageProjectorControl<ConicalFieldOfView> {

	public ConicalFieldOfViewImageProjectorControl(JME3Application jme3Application, ConicalFieldOfView fieldOfView) {
		super(jme3Application, fieldOfView);
	}

	@Override
	public float getHorizontalFOVAngleDegrees() {
		return (float) Math.toDegrees(this.fieldOfView.getFieldOfViewAngle());
	}

	@Override
	public float getTextureHtoVRatio() {
		return 1.0f;
	}

	@Override
	public BufferedImage getProjectedImage() {
		int width = 256;
		int height = Math.round(width * getTextureHtoVRatio());
		AbstractEImage transparentImage = EImagesUtilities.INSTANCE.createTransparentImage(width, height);

		BufferedImage result = transparentImage.asBufferedImage();
		Graphics2D g2d = result.createGraphics();

		RGB projColor = getProjectionColor();
		g2d.setColor(new Color(projColor.red, projColor.green, projColor.blue));

		g2d.drawOval(0, 0, width, height);
		g2d.drawOval(1, 1, width - 1, height - 1);
		g2d.drawOval(2, 2, width - 2, height - 2);
		g2d.drawOval(3, 3, width - 3, height - 3);

		return result;
	}

	@Override
	public void updateProjectorFOVSettings() {
		ProjectorData projectorData = getProjectorData();

		// Updates the texture.
		projectorData.projector.setProjectiveTextureMap(createTexture());

		Camera projectorCamera = projectorData.projector.getProjectorCamera();
		projectorCamera.setLocation(getProjectorLocation());
		projectorCamera.setRotation(getProjectorRotation());

		if (getHorizontalFOVAngleDegrees() > 0) {
			projectorCamera.setFrustumPerspective(getHorizontalFOVAngleDegrees(), getTextureHtoVRatio(), 1f, 5f);
		} else {
			projectorCamera.setFrustumPerspective(0.1f, getTextureHtoVRatio(), 1f, 5f);
		}

	}

}