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* This file is part of jReality. jReality is open source software, made
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* available under a BSD license:
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* Copyright (c) 2003-2006, jReality Group: Charles Gunn, Tim Hoffmann, Markus
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* Schmies, Steffen Weissmann.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of jReality nor the names of its contributors nor the
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* names of their associated organizations may be used to endorse or promote
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* products derived from this software without specific prior written
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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package opencog.spacetime.tools;
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import opencog.spacetime.scene.SceneGraphComponent;
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import opencog.spacetime.scene.Transformation;
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import opencog.spacetime.scene.tool.AbstractTool;
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import opencog.spacetime.scene.tool.InputSlot;
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import opencog.spacetime.scene.tool.ToolContext;
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* A tool that sets the head matrix from the head tracker.
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* @author Steffen Weissman
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public class PortalHeadMoveTool extends AbstractTool {
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final transient InputSlot headSlot = InputSlot.getDevice("ShipHeadTransformation");
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transient double[] tmp = new double[16];
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public PortalHeadMoveTool() {
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addCurrentSlot(headSlot, "the current head matrix in PORTAL coordinates");
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public void perform(ToolContext tc) {
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SceneGraphComponent head = tc.getRootToToolComponent().getLastComponent();
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if (head.getTransformation() == null) head.setTransformation(new Transformation());
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head.getTransformation().setMatrix(tc.getTransformationMatrix(headSlot).toDoubleArray(tmp));