com.metsci.glimpse.painter.texture.IntensityMapPainter Maven / Gradle / Ivy

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/*
 * Copyright (c) 2016, Metron, 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:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Metron, Inc. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * 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 METRON, INC. 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.
 */
package com.metsci.glimpse.painter.texture;

import java.io.IOException;
import java.util.logging.Logger;

import com.metsci.glimpse.axis.Axis1D;
import com.metsci.glimpse.gl.shader.Pipeline;
import com.metsci.glimpse.support.projection.Projection;
import com.metsci.glimpse.support.shader.SampledIntensityScaleShader;
import com.metsci.glimpse.support.texture.FloatTextureProjected2D;

/**
 * A simplified facade to {@link ShadedTexturePainter} which applies
 * a color scale (adjustable via an {@link com.metsci.glimpse.axis.Axis1D}
 * to a double[][] rectangular array of data stored as an OpenGL
 * texture in order to display a two dimensional heat map.
 *
 * @author ulman
 */
public class IntensityMapPainter extends ShadedTexturePainter
{
    public static final Logger logger = Logger.getLogger( IntensityMapPainter.class.getName( ) );

    protected FloatTextureProjected2D heatMap, colorMap;

    protected SampledIntensityScaleShader fragShader;

    public IntensityMapPainter( Axis1D axis )
    {
        try
        {
            this.loadDefaultPipeline( axis );
        }
        catch ( IOException e )
        {
            logger.warning( "Unable to load IntensityMapPainter shader." );
        }
    }

    protected void loadDefaultPipeline( Axis1D axis ) throws IOException
    {
        this.fragShader = new SampledIntensityScaleShader( axis, 0, 1 );
        this.setPipeline( new Pipeline( "colormap", null, null, fragShader ) );
    }

    public void setAlpha( float alpha )
    {
        lock.lock( );
        try
        {
            this.fragShader.setAlpha( alpha );
        }
        finally
        {
            lock.unlock( );
        }
    }

    public void setData( FloatTextureProjected2D texture )
    {
        lock.lock( );
        try
        {
            this.removeDrawableTexture( heatMap );
            this.heatMap = texture;
            this.addDrawableTexture( heatMap, 0 );
        }
        finally
        {
            lock.unlock( );
        }

    }

    public void setColor( FloatTextureProjected2D texture )
    {
        lock.lock( );
        try
        {
            this.removeNonDrawableTexture( colorMap );
            this.colorMap = texture;
            this.addNonDrawableTexture( colorMap, 1 );
        }
        finally
        {
            lock.unlock( );
        }
    }

    public FloatTextureProjected2D getColor( )
    {
        lock.lock( );
        try
        {
            if ( heatMap != null )
            {
                return colorMap;
            }
            else
            {
                return null;
            }
        }
        finally
        {
            lock.unlock( );
        }
    }

    public FloatTextureProjected2D getData( )
    {
        lock.lock( );
        try
        {
            if ( heatMap != null )
            {
                return heatMap;
            }
            else
            {
                return null;
            }
        }
        finally
        {
            lock.unlock( );
        }
    }

    public Projection getProjection( )
    {
        lock.lock( );
        try
        {
            if ( heatMap != null )
            {
                return heatMap.getProjection( );
            }
            else
            {
                return null;
            }
        }
        finally
        {
            lock.unlock( );
        }
    }
}