private void addTile(DrawContext dc, MercatorTextureTile tile) { tile.setFallbackTile(null); if (tile.isTextureInMemory(dc.getTextureCache())) { // System.out.printf("Sector %s, min = %f, max = %f\n", tile.getSector(), // dc.getGlobe().getMinElevation(tile.getSector()), // dc.getGlobe().getMaxElevation(tile.getSector())); this.addTileToCurrent(tile); return; } // Level 0 loads may be forced if (tile.getLevelNumber() == 0 && this.forceLevelZeroLoads && !tile.isTextureInMemory(dc.getTextureCache())) { this.forceTextureLoad(tile); if (tile.isTextureInMemory(dc.getTextureCache())) { this.addTileToCurrent(tile); return; } } // Tile's texture isn't available, so request it if (tile.getLevelNumber() < this.levels.getNumLevels()) { // Request only tiles with data associated at this level if (!this.levels.isResourceAbsent(tile)) this.requestTexture(dc, tile); } // Set up to use the currentResource tile's texture if (this.currentResourceTile != null) { if (this.currentResourceTile.getLevelNumber() == 0 && this.forceLevelZeroLoads && !this.currentResourceTile.isTextureInMemory(dc.getTextureCache()) && !this.currentResourceTile.isTextureInMemory(dc.getTextureCache())) this.forceTextureLoad(this.currentResourceTile); if (this.currentResourceTile.isTextureInMemory(dc.getTextureCache())) { tile.setFallbackTile(currentResourceTile); this.addTileToCurrent(tile); } } }