/*
* 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.worldwind.tile;
import static com.metsci.glimpse.util.logging.LoggerUtils.logInfo;
import java.util.List;
import java.util.logging.Logger;
import com.metsci.glimpse.axis.Axis2D;
import com.metsci.glimpse.layout.GlimpseLayout;
import com.metsci.glimpse.util.geo.projection.GeoProjection;
import gov.nasa.worldwind.geom.LatLon;
import gov.nasa.worldwind.render.DrawContext;
public class GlimpseResizingSurfaceTile extends GlimpseDynamicSurfaceTile
{
private static final Logger logger = Logger.getLogger( GlimpseResizingSurfaceTile.class.getName( ) );
// the maximum allowed size for the offscreen canvas
protected int maxWidth;
protected int maxHeight;
// the current size of the offscreen canvas (all of which might not be being used)
protected int currentWidth;
protected int currentHeight;
// the dimensions of the offscreen canvas currently being used
// invariant: maxWidth >= currentWidth >= requestedWidth
protected int calculatedWidth;
protected int calculatedHeight;
// the percentage of the offscreen buffer filled by the texture
protected float scaleX = 1.0f;
protected float scaleY = 1.0f;
protected double preferredPixelCount;
public GlimpseResizingSurfaceTile( GlimpseLayout layout, Axis2D axes, GeoProjection projection, int preferredWidth, int preferredHeight, double minLat, double maxLat, double minLon, double maxLon )
{
this( layout, axes, projection, 8192, 8192, preferredWidth, preferredHeight, minLat, maxLat, minLon, maxLon );
}
public GlimpseResizingSurfaceTile( GlimpseLayout layout, Axis2D axes, GeoProjection projection, int preferredWidth, int preferredHeight, List<LatLon> corners )
{
this( layout, axes, projection, 8192, 8192, preferredWidth, preferredHeight, corners );
}
public GlimpseResizingSurfaceTile( GlimpseLayout layout, Axis2D axes, GeoProjection projection, int maxWidth, int maxHeight, int preferredWidth, int preferredHeight, double minLat, double maxLat, double minLon, double maxLon )
{
super( layout, axes, projection, preferredWidth, preferredHeight, minLat, maxLat, minLon, maxLon );
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this.preferredPixelCount = width * height;
}
public GlimpseResizingSurfaceTile( GlimpseLayout layout, Axis2D axes, GeoProjection projection, int maxWidth, int maxHeight, int preferredWidth, int preferredHeight, List<LatLon> corners )
{
super( layout, axes, projection, preferredWidth, preferredHeight, corners );
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this.preferredPixelCount = width * height;
}
public void setPreferredDimensions( int width, int height )
{
this.width = width;
this.height = height;
this.preferredPixelCount = width * height;
}
// modify the pixel dimensions of the canvas so that they approximately match the
// dimensions of the tile which the texture will be drawn onto
// this makes sure that things drawn in pixel space (like GL_POINTS) will
// not appear distorted (much) when tiled onto WorldWind
@Override
protected void updateGeometry( DrawContext dc )
{
super.updateGeometry( dc );
if ( bounds != null && tile != null )
{
double latSpan = bounds.maxLat - bounds.minLat;
double lonSpan = bounds.maxLon - bounds.minLon;
double ratio = ( latSpan / lonSpan );
double fcalculatedHeight = Math.sqrt( preferredPixelCount * ratio );
double fcalculatedWidth = preferredPixelCount / fcalculatedHeight;
calculatedHeight = ( int ) fcalculatedHeight;
calculatedWidth = ( int ) fcalculatedWidth;
if ( calculatedHeight > maxHeight )
{
calculatedHeight = maxHeight;
calculatedWidth = ( int ) Math.min( maxWidth, calculatedHeight * ratio );
}
else if ( calculatedWidth > maxWidth )
{
calculatedWidth = maxWidth;
calculatedHeight = ( int ) Math.min( maxHeight, calculatedWidth * ( 1 / ratio ) );
}
if ( currentWidth < calculatedWidth || currentHeight < calculatedHeight )
{
// when we have to resize the canvas, do a bit more than necessary
// to leave room for possible future growth
int bufferedWidth = ( int ) ( Math.max( currentWidth, calculatedWidth ) * 1.1 );
int bufferedHeight = ( int ) ( Math.max( currentHeight, calculatedHeight ) * 1.1 );
currentWidth = Math.min( maxWidth, bufferedWidth );
currentHeight = Math.min( maxHeight, bufferedHeight );
resizeCanvas( currentWidth, currentHeight );
}
resizeLayout( calculatedWidth, calculatedHeight );
scaleX = ( float ) calculatedWidth / ( float ) currentWidth;
scaleY = ( float ) calculatedHeight / ( float ) currentHeight;
setTextureScale( tile );
}
}
@Override
protected TextureSurfaceTile newTextureSurfaceTile( int textureHandle, Iterable<? extends LatLon> corners )
{
TextureSurfaceTile tile = new TextureSurfaceTile( textureHandle, corners );
setTextureScale( tile );
tile.setOpacity( getOpacity( ) );
return tile;
}
protected void setTextureScale( TextureSurfaceTile tile )
{
setTextureScale( tile, scaleX, scaleY );
}
protected void setTextureScale( TextureSurfaceTile tile, float scaleX, float scaleY )
{
if ( tile != null ) tile.setTextureScale( scaleX, scaleY );
}
protected void resizeLayout( int width, int height )
{
mask.setLayoutData( String.format( "pos 0 0 %d %d", width, height ) );
background.invalidateLayout( );
}
protected void resizeCanvas( int width, int height )
{
logInfo( logger, "Resizing Offscreen Renderbuffer (%d x %d)", width, height );
offscreenCanvas.resize( width, height );
}
}