/* * 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: *
 *     origin: (x, y)
 *          => (x+dx1, y+dy1)
 *          => (x+dx1+dx2, y+dy1+dy2)
 *          => (x+dx2, y+dy2)
 *          => origin
 * 
* 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); }