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Refactored the tileset trimming code so that it can more easily be reused

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to trim object tilesets.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1524 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2002-06-21 18:09:37 +00:00
parent ad9a54086e
commit c3c08a03b3
3 changed files with 96 additions and 44 deletions
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src/java/com/threerings/cast/bundle/tools/ComponentBundlerTask.java
+2 -3
View File
@@ -1,5 +1,5 @@
//
// $Id: ComponentBundlerTask.java,v 1.9 2002/06/19 08:33:14 mdb Exp $
// $Id: ComponentBundlerTask.java,v 1.10 2002/06/21 18:09:37 mdb Exp $
package com.threerings.cast.bundle.tools;
@@ -43,7 +43,6 @@ import com.threerings.media.tile.ImageProvider;
import com.threerings.media.tile.TileSet;
import com.threerings.media.tile.TrimmedTileSet;
import com.threerings.media.tile.tools.xml.SwissArmyTileSetRuleSet;
import com.threerings.media.tile.util.TileSetTrimmer;
import com.threerings.cast.ComponentIDBroker;
import com.threerings.cast.bundle.BundleUtil;
@@ -183,7 +182,7 @@ public class ComponentBundlerTask extends Task
}
});
TrimmedTileSet tset =
TileSetTrimmer.trimTileSet(aset, jout);
TrimmedTileSet.trimTileSet(aset, jout);
tset.setImagePath(ipath);
tset.setName(aset.getName());
src/java/com/threerings/media/tile/TrimmedTileSet.java
+51 -12
View File
@@ -1,11 +1,16 @@
//
// $Id: TrimmedTileSet.java,v 1.1 2002/05/06 18:08:32 mdb Exp $
// $Id: TrimmedTileSet.java,v 1.2 2002/06/21 18:09:34 mdb Exp $
package com.threerings.media.tile;
import java.awt.Image;
import java.awt.Rectangle;
import java.io.IOException;
import java.io.OutputStream;
import com.threerings.media.tile.util.TileSetTrimmer;
/**
* Contains the necessary information to create a set of trimmed tiles
* from a base image and the associated trim metrics.
@@ -18,17 +23,6 @@ public class TrimmedTileSet extends TileSet
return _obounds.length;
}
/**
* Provides this tileset with access to the trimmed tile metrics. This
* generally only is called when generating a trimmed tileset from a
* regular tileset.
*/
public void setTileMetrics (Rectangle[] obounds, Rectangle[] tbounds)
{
_obounds = obounds;
_tbounds = tbounds;
}
// documentation inherited
protected Rectangle computeTileBounds (int tileIndex, Image tilesetImage)
{
@@ -43,6 +37,51 @@ public class TrimmedTileSet extends TileSet
tilesetImage, _obounds[tileIndex], _tbounds[tileIndex]);
}
/**
* Creates a trimmed tileset from the supplied source tileset. See
* {@link TileSetTrimmer#trimTileSet} for further information.
*/
public static TrimmedTileSet trimTileSet (
TileSet source, OutputStream destImage)
throws IOException
{
final TrimmedTileSet tset = new TrimmedTileSet();
int tcount = source.getTileCount();
// grab the dimensions of the original tiles
tset._obounds = new Rectangle[tcount];
for (int ii = 0; ii < tcount; ii++) {
try {
Tile tile = source.getTile(ii);
tset._obounds[ii] = new Rectangle();
tset._obounds[ii].width = tile.getWidth();
tset._obounds[ii].height = tile.getHeight();
} catch (NoSuchTileException nste) {
String errmsg = "Urk! TileSet is ill-behaved. " +
"Claimed to have " + tcount + " tiles, but choked when " +
"we asked for tile " + ii + " [tset=" + source + "].";
throw new RuntimeException(errmsg);
}
}
tset._tbounds = new Rectangle[tcount];
// create the trimmed tileset image
TileSetTrimmer.TrimMetricsReceiver tmr =
new TileSetTrimmer.TrimMetricsReceiver() {
public void trimmedTile (int tileIndex, int imageX, int imageY,
int trimX, int trimY,
int trimWidth, int trimHeight) {
tset._obounds[tileIndex].x = imageX;
tset._obounds[tileIndex].y = imageY;
tset._tbounds[tileIndex] =
new Rectangle(trimX, trimY, trimWidth, trimHeight);
}
};
TileSetTrimmer.trimTileSet(source, destImage, tmr);
return tset;
}
/** The width and height of the untrimmed tile, and the x and y offset
* of the trimmed image within our tileset image. */
protected Rectangle[] _obounds;
src/java/com/threerings/media/tile/util/TileSetTrimmer.java
+43 -29
View File
@@ -1,5 +1,5 @@
//
// $Id: TileSetTrimmer.java,v 1.1 2002/06/19 08:29:59 mdb Exp $
// $Id: TileSetTrimmer.java,v 1.2 2002/06/21 18:09:37 mdb Exp $
package com.threerings.media.tile.util;
@@ -21,18 +21,45 @@ import com.threerings.media.Log;
import com.threerings.media.tile.NoSuchTileException;
import com.threerings.media.tile.Tile;
import com.threerings.media.tile.TileSet;
import com.threerings.media.tile.TrimmedTileSet;
import com.threerings.media.util.ImageUtil;
/**
* Contains routines for generating a trimmed tileset from an existing
* tileset. Both a {@link TrimmedTileSet} instance and the associated
* trimmed image are created.
* Contains routines for trimming the images from an existing tileset
* which means that each tile is converted to an image that contains the
* smallest rectangular region of the original image that contains all
* non-transparent pixels. These trimmed images are then written out to a
* single image, packed together left to right.
*/
public class TileSetTrimmer
{
/**
* Generates a {@link TrimmedTileSet} from the supplied source
* Used to communicate the metrics of the trimmed tiles back to the
* caller so that they can do what they like with them.
*/
public static interface TrimMetricsReceiver
{
/**
* Called for each trimmed tile.
*
* @param tileIndex the index of the tile in the original tileset.
* @param imageX the x offset into the newly created tileset image
* of the trimmed image data.
* @param imageY the y offset into the newly created tileset image
* of the trimmed image data.
* @param trimX the x offset into the untrimmed tile image where
* the trimmed data begins.
* @param trimY the y offset into the untrimmed tile image where
* the trimmed data begins.
* @param trimWidth the width of the trimmed tile image.
* @param trimHeight the height of the trimmed tile image.
*/
public void trimmedTile (int tileIndex, int imageX, int imageY,
int trimX, int trimY,
int trimWidth, int trimHeight);
}
/**
* Generates a trimmed tileset image from the supplied source
* tileset. The source tileset must be configured with an image
* provider so that the tile images can be obtained. The tile images
* will be trimmed and a new tileset image generated and written to
@@ -41,19 +68,16 @@ public class TileSetTrimmer
* @param source the source tileset.
* @param destImage an output stream to which the new trimmed image
* will be written.
* @param tmr a callback object that will be used to inform the caller
* of the trimmed tile metrics.
*/
public static TrimmedTileSet trimTileSet (
TileSet source, OutputStream destImage)
public static void trimTileSet (
TileSet source, OutputStream destImage, TrimMetricsReceiver tmr)
throws IOException
{
int tcount = source.getTileCount();
BufferedImage[] timgs = new BufferedImage[tcount];
// these will contain the width and height of the untrimmed tile,
// but the x and y offset of the trimmed tile image in the
// supplied tileset source image
Rectangle[] obounds = new Rectangle[tcount];
// these will contain the bounds of the trimmed image in the
// coordinate system defined by the untrimmed image
Rectangle[] tbounds = new Rectangle[tcount];
@@ -71,25 +95,18 @@ public class TileSetTrimmer
}
// figure out how tightly we can trim it
obounds[ii] = new Rectangle(
0, 0, timgs[ii].getWidth(), timgs[ii].getHeight());
tbounds[ii] = new Rectangle();
ImageUtil.computeTrimmedBounds(timgs[ii], tbounds[ii]);
// assign it a location in the trimmed tile image
obounds[ii].x = nextx;
nextx += tbounds[ii].width;
// let our caller know what we did
tmr.trimmedTile(ii, nextx, 0, tbounds[ii].x, tbounds[ii].y,
tbounds[ii].width, tbounds[ii].height);
// adjust the new tileset image dimensions
maxy = Math.max(maxy, tbounds[ii].height);
nextx += tbounds[ii].width;
}
// create our tileset object
TrimmedTileSet ttset = new TrimmedTileSet();
ttset.setTileMetrics(obounds, tbounds);
// Log.info("Trimming [obounds=" + StringUtil.toString(obounds) +
// ", tbounds=" + StringUtil.toString(tbounds) +
// ", nwidth=" + nextx + ", nheight=" + maxy + "].");
// create the new tileset image
BufferedImage image = ImageUtil.createCompatibleImage(
(BufferedImage)source.getTileSetImage(), nextx, maxy);
@@ -107,8 +124,5 @@ public class TileSetTrimmer
// write out trimmed image
ImageIO.write(image, "png", destImage);
// we're good to go
return ttset;
}
}