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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 | +} | |