org.jtrfp.trcl.obj.BillboardSprite.java Source code

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Here is the source code for org.jtrfp.trcl.obj.BillboardSprite.java

Source

/*******************************************************************************
 * This file is part of TERMINAL RECALL
 * Copyright (c) 2012-2014 Chuck Ritola
 * Part of the jTRFP.org project
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     chuck - initial API and implementation
 ******************************************************************************/
package org.jtrfp.trcl.obj;

import java.awt.Dimension;

import org.apache.commons.math3.geometry.euclidean.threed.Rotation;
import org.apache.commons.math3.geometry.euclidean.threed.Vector3D;
import org.jtrfp.trcl.Camera;
import org.jtrfp.trcl.RenderMode;
import org.jtrfp.trcl.Triangle;
import org.jtrfp.trcl.core.TR;
import org.jtrfp.trcl.core.TRFutureTask;
import org.jtrfp.trcl.core.TextureDescription;
import org.jtrfp.trcl.gpu.Model;

public class BillboardSprite extends WorldObject {
    private Dimension dim;
    private double rotation = 0;

    public BillboardSprite(TR tr) {
        super(tr);
    }

    @Override
    protected void recalculateTransRotMBuffer() {
        final Camera camera = getTr().mainRenderer.get().getCamera();
        final Vector3D cLookAt = camera.getLookAtVector();
        final Rotation rot = new Rotation(cLookAt, rotation);
        this.setHeading(rot.applyTo(cLookAt.negate()));
        this.setTop(rot.applyTo(camera.getUpVector()));
        super.recalculateTransRotMBuffer();
    }//end recalculateTransRotMBuffer()

    public void setBillboardSize(Dimension dim) {
        this.dim = dim;
    }

    public Dimension getBillboardSize() {
        return this.dim;
    }

    public void setTexture(TextureDescription desc, boolean useAlpha) {
        if (dim == null)
            throw new NullPointerException("Billboard size must be non-null. (did you forget to set it?)");
        Triangle[] tris = Triangle.quad2Triangles(
                new double[] { -.5 * dim.getWidth(), .5 * dim.getWidth(), .5 * dim.getWidth(),
                        -.5 * dim.getWidth() }, //X
                new double[] { -.5 * dim.getHeight(), -.5 * dim.getHeight(), .5 * dim.getHeight(),
                        .5 * dim.getHeight() },
                new double[] { 0, 0, 0, 0 }, new double[] { 0, 1, 1, 0 }, //U
                new double[] { 0, 0, 1, 1 }, desc, RenderMode.DYNAMIC, true, Vector3D.ZERO, "BillboardSprite");
        Model m = new Model(false, getTr());
        m.addTriangles(tris);
        setModel(m.finalizeModel());
    }

    public void setRotation(double angle) {
        rotation = angle;
    }

    @Override
    protected boolean recalcMatrixWithEachFrame() {
        return true;
    }
}//end BillboardSprite