org.scijava.java3d.loaders.lw3d.LwsFog Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of j3dutils Show documentation
Utility functions for the Java 3D Graphics API
The newest version!
/*
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistribution 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.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 *
 */

package org.scijava.java3d.loaders.lw3d;



import java.io.IOException;
import java.io.StreamTokenizer;

import org.scijava.java3d.BoundingSphere;
import org.scijava.java3d.Fog;
import org.scijava.java3d.LinearFog;
import org.scijava.vecmath.Color3f;
import org.scijava.vecmath.Point3d;

import org.scijava.java3d.loaders.ParsingErrorException;


/**
 * This class creates a Fog object from the data in a Scene file.
 */

class LwsFog extends TextfileParser {

    // data from the file
    float minDist, maxDist, minAmount, maxAmount;
    int backdropFog;
    Color3f color;
    int type;
    Fog fogObject = null;

    /**
     * Constructor: parses stream and stores fog data
     */
    LwsFog(StreamTokenizer st, int debugVals) throws ParsingErrorException {
	debugPrinter.setValidOutput(debugVals);
	debugOutput(TRACE, "LwsFog()");
	color = new Color3f(0f, 0f, 0f);

	while (!isCurrentToken(st, "DitherIntensity")) {
	    debugOutputLn(LINE_TRACE, "currentToken = " + st.sval);

	    if (isCurrentToken(st, "FogMinDist")) {
		minDist = (float)getNumber(st);
	    }
	    else if (isCurrentToken(st, "FogMaxDist")) {
		maxDist = (float)getNumber(st);
	    }
	    else if (isCurrentToken(st, "FogMinAmount")) {
		minAmount = (float)getNumber(st);
	    }
	    else if (isCurrentToken(st, "FogMaxAmount")) {
		maxAmount = (float)getNumber(st);
	    }
	    else if (isCurrentToken(st, "BackdropFog")) {
		backdropFog = (int)getNumber(st);
	    }
	    else if (isCurrentToken(st, "FogColor")) {
		color.x = (float)getNumber(st)/255f;
		color.y = (float)getNumber(st)/255f;
		color.z = (float)getNumber(st)/255f;
	    }
	    try {
	      st.nextToken();
	    }
	    catch (IOException e) {
		throw new ParsingErrorException(e.getMessage());
	    }
	}
	st.pushBack();   // push token back on stack
    }

    /**
     * Creates Java3d Fog object given the fog parameters in the file.
     * Note that various fog parameters in lw3d are not currently handled.
     */
    void createJava3dObject() {
	// TODO:  there are various attributes of lw fog that
	// we're not currently handing, including non-linear fog
	// (need to understand the two different types - these may
	// map onto java3d's expontential fog node), non-solid
	// backdrop colors (how to handle this?), min/max amount
	// (j3d only handles 0 -> 1 case)

	fogObject = new LinearFog(color, minDist, maxDist);
	debugOutputLn(VALUES,
		      "just set linearFog with color, minDist, maxDist = " +
		      color + ", " +
		      minDist + ", " +
		      maxDist);
	BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100000.0);
	fogObject.setInfluencingBounds(bounds);
    }

    Fog getObjectNode()
    {
	return fogObject;
    }

    void printVals()
    {
	debugOutputLn(VALUES, "  FOG vals: ");
    }


}