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| 1 | /* | ||
| 2 | * Copyright (c) 2008, 2011 Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.java2d.pipe; | ||
| 27 | |||
| 28 | import sun.java2d.SunGraphics2D; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * This interface defines the set of calls that pipeline objects | ||
| 32 | * can use to pass on responsibility for drawing arbitrary | ||
| 33 | * parallelogram shapes. | ||
| 34 | * Six floating point numbers are provided and the parallelogram | ||
| 35 | * is defined as the quadrilateral with the following vertices: | ||
| 36 | * <pre> | ||
| 37 | * origin: (x, y) | ||
| 38 | * => (x+dx1, y+dy1) | ||
| 39 | * => (x+dx1+dx2, y+dy1+dy2) | ||
| 40 | * => (x+dx2, y+dy2) | ||
| 41 | * => origin | ||
| 42 | * </pre> | ||
| 43 | * The four u[xy][12] parameters are the unsorted extreme coordinates | ||
| 44 | * of the primitive in user space. They may have been generated by a | ||
| 45 | * line or a rectangle so they could have u[xy]2 < u[xy]1 in some cases. | ||
| 46 | * They should be sorted before calculating the bounds of the original | ||
| 47 | * primitive (such as for calculating the user space bounds for the | ||
| 48 | * Paint.createContext() method). | ||
| 49 | */ | ||
| 50 | public interface ParallelogramPipe { | ||
| 51 | public void fillParallelogram(SunGraphics2D sg, | ||
| 52 | double ux1, double uy1, | ||
| 53 | double ux2, double uy2, | ||
| 54 | double x, double y, | ||
| 55 | double dx1, double dy1, | ||
| 56 | double dx2, double dy2); | ||
| 57 | |||
| 58 | /** | ||
| 59 | * Draw a Parallelogram with the indicated line widths | ||
| 60 | * assuming a standard BasicStroke with MITER joins. | ||
| 61 | * lw1 specifies the width of the stroke along the dx1,dy1 | ||
| 62 | * vector and lw2 specifies the width of the stroke along | ||
| 63 | * the dx2,dy2 vector. | ||
| 64 | * This is equivalent to outsetting the indicated | ||
| 65 | * parallelogram by lw/2 pixels, then insetting the | ||
| 66 | * same parallelogram by lw/2 pixels and filling the | ||
| 67 | * difference between the outer and inner parallelograms. | ||
| 68 | */ | ||
| 69 | public void drawParallelogram(SunGraphics2D sg, | ||
| 70 | double ux1, double uy1, | ||
| 71 | double ux2, double uy2, | ||
| 72 | double x, double y, | ||
| 73 | double dx1, double dy1, | ||
| 74 | double dx2, double dy2, | ||
| 75 | double lw1, double lw2); | ||
| 76 | } | ||