/** Trace ray, based on "Voxel Tranversal along a 3D line" */
private void raytrace(
MapChunkCache cache,
MapIterator mapiter,
HDShaderState[] shaderstate,
boolean[] shaderdone) {
/* Initialize raytrace state variables */
raytrace_init();
mapiter.initialize(x, y, z);
for (; n > 0; --n) {
if (visit_block(mapiter, shaderstate, shaderdone)) {
return;
}
/* If X step is next best */
if ((t_next_x <= t_next_y) && (t_next_x <= t_next_z)) {
x += x_inc;
t = t_next_x;
t_next_x += dt_dx;
laststep = stepx;
mapiter.stepPosition(laststep);
}
/* If Y step is next best */
else if ((t_next_y <= t_next_x) && (t_next_y <= t_next_z)) {
y += y_inc;
t = t_next_y;
t_next_y += dt_dy;
laststep = stepy;
mapiter.stepPosition(laststep);
/* If outside 0-127 range */
if ((y & (~0x7F)) != 0) return;
}
/* Else, Z step is next best */
else {
z += z_inc;
t = t_next_z;
t_next_z += dt_dz;
laststep = stepz;
mapiter.stepPosition(laststep);
}
}
}
public boolean render(MapChunkCache cache, KzedMapTile tile, File outputFile) {
DynmapWorld world = tile.getDynmapWorld();
boolean isnether = world.isNether();
DynmapBufferedImage im =
DynmapBufferedImage.allocateBufferedImage(KzedMap.tileWidth, KzedMap.tileHeight);
DynmapBufferedImage zim =
DynmapBufferedImage.allocateBufferedImage(KzedMap.tileWidth / 2, KzedMap.tileHeight / 2);
DynmapBufferedImage im_day = null;
DynmapBufferedImage zim_day = null;
if (night_and_day) {
im_day = DynmapBufferedImage.allocateBufferedImage(KzedMap.tileWidth, KzedMap.tileHeight);
zim_day =
DynmapBufferedImage.allocateBufferedImage(KzedMap.tileWidth / 2, KzedMap.tileHeight / 2);
}
if (cache.getWorld().worldheight > 128) {
if (maximumHeight == 127) maximumHeight = cache.getWorld().worldheight - 1;
}
int ix = tile.px / 2 + tile.py / 2 - ((127 - maximumHeight) / 2);
int iy = maximumHeight;
int iz = tile.px / 2 - tile.py / 2 + ((127 - maximumHeight) / 2);
/* Don't mess with existing height-clipped renders */
if (maximumHeight < 127) isnether = false;
int jx, jz;
int x, y;
MapIterator mapiter = cache.getIterator(ix, iy, iz);
Color c1 = new Color();
Color c2 = new Color();
int[] argb = im.argb_buf;
int[] zargb = zim.argb_buf;
Color c1_day = null;
Color c2_day = null;
int[] argb_day = null;
int[] zargb_day = null;
if (night_and_day) {
c1_day = new Color();
c2_day = new Color();
argb_day = im_day.argb_buf;
zargb_day = zim_day.argb_buf;
}
int rowoff = 0;
/* draw the map */
for (y = 0; y < KzedMap.tileHeight; ) {
jx = ix;
jz = iz;
for (x = KzedMap.tileWidth - 1; x >= 0; x -= 2) {
mapiter.initialize(jx, iy, jz);
scan(world, 0, isnether, c1, c1_day, mapiter);
mapiter.initialize(jx, iy, jz);
scan(world, 2, isnether, c2, c2_day, mapiter);
argb[rowoff + x] = c1.getARGB();
argb[rowoff + x - 1] = c2.getARGB();
if (night_and_day) {
argb_day[rowoff + x] = c1_day.getARGB();
argb_day[rowoff + x - 1] = c2_day.getARGB();
}
jx++;
jz++;
}
y++;
rowoff += KzedMap.tileWidth;
jx = ix;
jz = iz - 1;
for (x = KzedMap.tileWidth - 1; x >= 0; x -= 2) {
mapiter.initialize(jx, iy, jz);
scan(world, 2, isnether, c1, c1_day, mapiter);
jx++;
jz++;
mapiter.initialize(jx, iy, jz);
scan(world, 0, isnether, c2, c2_day, mapiter);
argb[rowoff + x] = c1.getARGB();
argb[rowoff + x - 1] = c2.getARGB();
if (night_and_day) {
argb_day[rowoff + x] = c1_day.getARGB();
argb_day[rowoff + x - 1] = c2_day.getARGB();
}
}
y++;
rowoff += KzedMap.tileWidth;
ix++;
iz--;
}
/* Now, compute zoomed tile - bilinear filter 2x2 -> 1x1 */
doScaleWithBilinear(argb, zargb, KzedMap.tileWidth, KzedMap.tileHeight);
if (night_and_day) {
doScaleWithBilinear(argb_day, zargb_day, KzedMap.tileWidth, KzedMap.tileHeight);
}
/* Hand encoding and writing file off to MapManager */
KzedZoomedMapTile zmtile = new KzedZoomedMapTile(tile.getDynmapWorld(), tile);
File zoomFile = MapManager.mapman.getTileFile(zmtile);
return doFileWrites(outputFile, tile, im, im_day, zmtile, zoomFile, zim, zim_day);
}