welp.java

public boolean convertSpriteVertices = true;

	/** Draws a rectangle using the given vertices. There must be 4 vertices, each made up of 6 elements in this order: x, y, lightColor, darkColor,
	 * u, v. The {@link #getColor()} and {@link #getDarkColor()} from the TwoColorPolygonBatch is not applied. */
	@Override
	public void draw (Texture texture, float[] spriteVertices, int offset, int count) {
		if (!drawing) throw new IllegalStateException("begin must be called before draw.");
		final short[] triangles = this.triangles;
		final float[] vertices = this.vertices;

		int oldCount = count;
		if (convertSpriteVertices) {
			count = SPRITE_SIZE * (count / 20);
		}

		final int triangleCount = count / SPRITE_SIZE * 6;
		if (texture != lastTexture)
			switchTexture(texture);
		else if (triangleIndex + triangleCount > triangles.length || vertexIndex + count > vertices.length) //
			flush();

		final int vertexIndex = this.vertexIndex;
		int triangleIndex = this.triangleIndex;
		short vertex = (short)(vertexIndex / VERTEX_SIZE);
		for (int n = triangleIndex + triangleCount; triangleIndex < n; triangleIndex += 6, vertex += 4) {
			triangles[triangleIndex] = vertex;
			triangles[triangleIndex + 1] = (short)(vertex + 1);
			triangles[triangleIndex + 2] = (short)(vertex + 2);
			triangles[triangleIndex + 3] = (short)(vertex + 2);
			triangles[triangleIndex + 4] = (short)(vertex + 3);
			triangles[triangleIndex + 5] = vertex;
		}
		this.triangleIndex = triangleIndex;

		if (convertSpriteVertices) {
			int idx = vertexIndex;
			for (int i = 0; i < oldCount; i += 5) {
				vertices[idx++] = spriteVertices[i];
				vertices[idx++] = spriteVertices[i + 1];
				vertices[idx++] = spriteVertices[i + 2];
				vertices[idx++] = 0; // dark
				vertices[idx++] = spriteVertices[i + 3];
				vertices[idx++] = spriteVertices[i + 4];
			}
		} else {
			System.arraycopy(spriteVertices, offset, vertices, vertexIndex, count);
		}
		this.vertexIndex += count;
	}