/* * Copyright (c) 2008, 2011 Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.java2d.pipe; import sun.java2d.SunGraphics2D; /** * This interface defines the set of calls that pipeline objects * can use to pass on responsibility for drawing arbitrary * parallelogram shapes. * Six floating point numbers are provided and the parallelogram * is defined as the quadrilateral with the following vertices: * <pre> *     origin: (x, y) *          => (x+dx1, y+dy1) *          => (x+dx1+dx2, y+dy1+dy2) *          => (x+dx2, y+dy2) *          => origin * </pre> * The four u[xy][12] parameters are the unsorted extreme coordinates * of the primitive in user space.  They may have been generated by a * line or a rectangle so they could have u[xy]2 < u[xy]1 in some cases. * They should be sorted before calculating the bounds of the original * primitive (such as for calculating the user space bounds for the * Paint.createContext() method). */public interface ParallelogramPipe {    public void fillParallelogram(SunGraphics2D sg,                                  double ux1, double uy1,                                  double ux2, double uy2,                                  double x, double y,                                  double dx1, double dy1,                                  double dx2, double dy2);     /**     * Draw a Parallelogram with the indicated line widths     * assuming a standard BasicStroke with MITER joins.     * lw1 specifies the width of the stroke along the dx1,dy1     * vector and lw2 specifies the width of the stroke along     * the dx2,dy2 vector.     * This is equivalent to outsetting the indicated     * parallelogram by lw/2 pixels, then insetting the     * same parallelogram by lw/2 pixels and filling the     * difference between the outer and inner parallelograms.     */    public void drawParallelogram(SunGraphics2D sg,                                  double ux1, double uy1,                                  double ux2, double uy2,                                  double x, double y,                                  double dx1, double dy1,                                  double dx2, double dy2,                                  double lw1, double lw2);}