public void export(PrintWriter objWriter, PrintWriter mtlWriter)
	{
		model.computeNormals();
		model.computeTextureUVCoordinates();

		objWriter.println("mtllib " + model.id + ".mtl");

		objWriter.println("o runescapemodel");

		for (int i = 0; i < model.vertexCount; ++i)
		{
			objWriter.println("v " + model.vertexX[i] + " "
				+ model.vertexY[i] * -1 + " "
				+ model.vertexZ[i] * -1);
		}

		if (model.faceTextures != null)
		{
			float[][] u = model.faceTextureUCoordinates;
			float[][] v = model.faceTextureVCoordinates;

			for (int i = 0; i < model.faceCount; ++i)
			{
				objWriter.println("vt " + u[i][0] + " " + v[i][0]);
				objWriter.println("vt " + u[i][1] + " " + v[i][1]);
				objWriter.println("vt " + u[i][2] + " " + v[i][2]);
			}
		}

		for (VertexNormal normal : model.vertexNormals)
		{
			objWriter.println("vn " + normal.x + " " + normal.y + " " + normal.z);
		}

		for (int i = 0; i < model.faceCount; ++i)
		{
			int x = model.faceIndices1[i] + 1;
			int y = model.faceIndices2[i] + 1;
			int z = model.faceIndices3[i] + 1;

			objWriter.println("usemtl m" + i);
			if (model.faceTextures != null)
			{
				objWriter.println("f "
					+ x + "/" + (i * 3 + 1) + " "
					+ y + "/" + (i * 3 + 2) + " "
					+ z + "/" + (i * 3 + 3));

			}
			else
			{
				objWriter.println("f " + x + " " + y + " " + z);
			}
			objWriter.println("");
		}

		// Write material
		for (int i = 0; i < model.faceCount; ++i)
		{
			short textureId = -1;

			if (model.faceTextures != null)
			{
				textureId = model.faceTextures[i];
			}

			mtlWriter.println("newmtl m" + i);

			if (textureId == -1)
			{
				int rgb = JagexColor.HSLtoRGB( model.faceColors[i], BRIGHTNESS);
				double r = ((rgb >> 16) & 0xff) / 255.0;
				double g = ((rgb >> 8) & 0xff) / 255.0;
				double b = (rgb & 0xff) / 255.0;

				mtlWriter.println("Kd " + r + " " + g + " " + b);
			}
			else
			{
				TextureDefinition texture = textureManager.findTexture(textureId);
				assert texture != null;

				mtlWriter.println("map_Kd sprite/" + texture.getFileIds()[0] + "-0.png");
			}

			int alpha = 0;

			if (model.faceTransparencies != null)
			{
				alpha = model.faceTransparencies[i] & 0xFF;
			}

			if (alpha != 0)
			{
				mtlWriter.println("d " + (alpha / 255.0));
			}
		}
	}
@Test
	@Ignore
	public void testExport() throws Exception
	{
		try (Store store = new Store(StoreLocation.LOCATION))
		{
			store.load();

			TextureManager tm = new TextureManager(store);
			tm.load();

			ModelLoader loader = new ModelLoader();
			ModelDefinition model = loader.load(9638, Files.readAllBytes(new File("D:\\rs\\07\\cache\\models\\9638.model").toPath()));

			ObjExporter exporter = new ObjExporter(tm, model);
			try (PrintWriter objWriter = new PrintWriter(new FileWriter(new File("D:\\rs\\07\\temp\\9638.obj")));
				PrintWriter mtlWriter = new PrintWriter(new FileWriter(new File("D:\\rs\\07\\temp\\9638.mtl"))))
			{
				exporter.export(objWriter, mtlWriter);
			}
		}
	}