Here you can find the source of drawOptimizedLine(Graphics g, int x1, int y1, int x2, int y2)
public static void drawOptimizedLine(Graphics g, int x1, int y1, int x2, int y2)
//package com.java2s; /*// w ww . j a v a 2 s . c o m * Copyright (C) 2004 NNL Technology AB * Visit www.infonode.net for information about InfoNode(R) * products and how to contact NNL Technology AB. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ import java.awt.*; public class Main { public static void drawOptimizedLine(Graphics g, int x1, int y1, int x2, int y2) { if (g.getColor().getAlpha() < 255 && (x1 == x2 || y1 == y2)) g.fillRect(x1 < x2 ? x1 : x2, y1 < y2 ? y1 : y2, Math.abs(x2 - x1) + 1, Math.abs(y2 - y1) + 1); else g.drawLine(x1, y1, x2, y2); } }