mirror of https://github.com/webbukkit/dynmap.git
283 lines
6.2 KiB
Java
283 lines
6.2 KiB
Java
import java.util.logging.Logger;
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import java.util.logging.Level;
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import java.awt.*;
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import java.awt.image.*;
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import java.io.File;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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public class MapTile {
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protected static final Logger log = Logger.getLogger("Minecraft");
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/* projection position */
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public int px, py;
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/* projection position of zoom-out tile */
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public int zpx, zpy;
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/* minecraft space origin */
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public int mx, my, mz;
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/* whether this tile needs to be updated */
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boolean stale = false;
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/* create new MapTile */
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public MapTile(int px, int py, int zpx, int zpy)
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{
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this.px = px;
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this.py = py;
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this.zpx = zpx;
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this.zpy = zpy;
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mx = MapManager.anchorx + px / 2 + py / 2;
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my = MapManager.anchory;
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mz = MapManager.anchorz + px / 2 - py / 2;
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}
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/* get key by projection position */
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public static long key(int px, int py)
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{
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long lpx = (long) px;
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long lpy = (long) py;
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return ((lpx & (long) 0xffffffffL) << 32) | (lpy & (long) 0xffffffffL);
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}
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/* hash value, based on projection position */
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public int hashCode()
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{
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return (px << 16) ^ py;
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}
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/* equality comparison - based on projection position */
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public boolean equals(MapTile o)
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{
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return o.px == px && o.py == py;
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}
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/* return a simple string representation... */
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public String toString()
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{
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return px + "_" + py;
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}
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/* render this tile */
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public void render(MapManager mgr)
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{
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mgr.debug("Rendering tile: " + this.toString());
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BufferedImage im = new BufferedImage(MapManager.tileWidth, MapManager.tileHeight, BufferedImage.TYPE_INT_RGB);
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WritableRaster r = im.getRaster();
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int ix = mx;
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int iy = my;
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int iz = mz;
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int jx, jz;
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int x, y;
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/* draw the map */
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for(y=0; y<MapManager.tileHeight;) {
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jx = ix;
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jz = iz;
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for(x=MapManager.tileWidth-1; x>=0; x-=2) {
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Color c1 = scan(mgr, jx, iy, jz, 0);
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Color c2 = scan(mgr, jx, iy, jz, 2);
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r.setPixel(x, y, new int[] { c1.getRed(), c1.getGreen(), c1.getBlue() });
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r.setPixel(x-1, y, new int[] { c2.getRed(), c2.getGreen(), c2.getBlue() });
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jx++;
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jz++;
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}
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y ++;
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jx = ix;
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jz = iz - 1;
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for(x=MapManager.tileWidth-1; x>=0; x-=2) {
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Color c1 = scan(mgr, jx, iy, jz, 2);
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jx++;
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jz++;
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Color c2 = scan(mgr, jx, iy, jz, 0);
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r.setPixel(x, y, new int[] { c1.getRed(), c1.getGreen(), c1.getBlue() });
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r.setPixel(x-1, y, new int[] { c2.getRed(), c2.getGreen(), c2.getBlue() });
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}
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y ++;
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ix ++;
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iz --;
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}
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/* save image */
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try {
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String path = getPath(mgr);
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File file = new File(path);
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ImageIO.write(im, "png", file);
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} catch(IOException e) {
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log.log(Level.SEVERE, "Failed to save tile: " + getPath(mgr), e);
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} catch(java.lang.NullPointerException e) {
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log.log(Level.SEVERE, "Failed to save tile (NullPointerException): " + getPath(mgr), e);
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}
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/* now update zoom-out tile */
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String zPath = getZoomPath(mgr);
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BufferedImage zIm = mgr.zoomCache.get(zPath);
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if(zIm == null) {
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/* zoom-out tile doesn't exist - try to load it from disk */
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mgr.debug("Trying to load zoom-out tile: " + zPath);
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try {
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File file = new File(zPath);
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zIm = ImageIO.read(file);
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} catch(IOException e) {
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}
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if(zIm == null) {
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mgr.debug("Failed to load zoom-out tile: " + zPath);
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/* create new one */
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/* TODO: we might use existing tiles that we could load
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* to fill the zoomed out tile in... */
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zIm = new BufferedImage(MapManager.tileWidth, MapManager.tileHeight, BufferedImage.TYPE_INT_RGB);
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} else {
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mgr.debug("Loaded zoom-out tile from " + zPath);
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}
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} else {
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mgr.debug("Using zoom-out tile from cache: " + zPath);
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}
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/* update zoom-out tile */
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/* scaled size */
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int scw = mgr.tileWidth / 2;
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int sch = mgr.tileHeight / 2;
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/* origin in zoomed-out tile */
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int ox = scw;
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int oy = 0;
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if(zpx != px) ox = 0;
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if(zpy != py) oy = sch;
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/* blit scaled rendered tile onto zoom-out tile */
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WritableRaster zr = zIm.getRaster();
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Graphics2D g2 = zIm.createGraphics();
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g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
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g2.drawImage(im, ox, oy, scw, sch, null);
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/* update zoom-out tile cache */
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BufferedImage oldIm = mgr.zoomCache.put(zPath, zIm);
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if(oldIm != null && oldIm != zIm) {
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oldIm.flush();
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}
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/* save zoom-out tile */
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try {
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File file = new File(zPath);
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ImageIO.write(zIm, "png", file);
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mgr.debug("saved zoom-out tile at " + zPath);
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//log.info("Saved tile: " + path);
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} catch(IOException e) {
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log.log(Level.SEVERE, "Failed to save zoom-out tile: " + zPath, e);
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} catch(java.lang.NullPointerException e) {
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log.log(Level.SEVERE, "Failed to save zoom-out tile (NullPointerException): " + zPath, e);
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}
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}
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/* generate a path name for this map tile */
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public String getPath(MapManager mgr)
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{
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return mgr.tilepath + "t_" + px + "_" + py + ".png";
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}
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/* generate a path name for the zoomed-out tile */
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public String getZoomPath(MapManager mgr)
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{
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return mgr.tilepath + "zt_" + zpx + "_" + zpy + ".png";
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}
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/* try to load already generated image */
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public BufferedImage loadTile(MapManager mgr)
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{
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try {
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File file = new File(getPath(mgr));
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return ImageIO.read(file);
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} catch(IOException e) {
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}
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return null;
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}
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/* cast a ray into the map */
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private Color scan(MapManager mgr, int x, int y, int z, int seq)
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{
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Server s = etc.getServer();
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for(;;) {
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if(y < 0)
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return Color.BLUE;
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int id = s.getBlockIdAt(x, y, z);
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switch(seq) {
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case 0:
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x--;
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break;
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case 1:
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y--;
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break;
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case 2:
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z++;
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break;
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case 3:
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y--;
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break;
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}
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seq = (seq + 1) & 3;
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if(id != 0) {
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Color[] colors = mgr.colors.get(id);
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if(colors != null) {
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Color c = colors[seq];
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if(c.getAlpha() > 0) {
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/* we found something that isn't transparent! */
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if(c.getAlpha() == 255) {
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/* it's opaque - the ray ends here */
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return c;
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}
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/* this block is transparent, so recurse */
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Color bg = scan(mgr, x, y, z, seq);
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int cr = c.getRed();
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int cg = c.getGreen();
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int cb = c.getBlue();
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int ca = c.getAlpha();
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cr *= ca;
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cg *= ca;
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cb *= ca;
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int na = 255 - ca;
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return new Color((bg.getRed() * na + cr) >> 8, (bg.getGreen() * na + cg) >> 8, (bg.getBlue() * na + cb) >> 8);
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}
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}
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}
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}
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}
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}
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