83 lines
2.9 KiB
Java
83 lines
2.9 KiB
Java
/*
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* Copyright (c) 2001, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 4210466 4417756
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* @summary thin lines are not draw correctly under large scales
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*/
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import java.awt.BasicStroke;
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.awt.Shape;
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import java.awt.image.BufferedImage;
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import java.awt.geom.Ellipse2D;
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public class ScaledThinLineTest {
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public static void main(String[] args) {
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ScaledThinLineTest c1 = new ScaledThinLineTest(200, 200);
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ScaledThinLineTest c2 = new ScaledThinLineTest(1, 10000);
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ScaledThinLineTest c3 = new ScaledThinLineTest(10000, 1);
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ScaledThinLineTest c4 = new ScaledThinLineTest(0.01, 10000);
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ScaledThinLineTest c5 = new ScaledThinLineTest(10000, 0.01);
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compare(c1.bi, c2.bi);
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compare(c2.bi, c3.bi);
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compare(c3.bi, c4.bi);
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compare(c4.bi, c5.bi);
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}
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private final Shape shape;
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private final double scaleX,scaleY;
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private BufferedImage bi = null;
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public ScaledThinLineTest(double width, double height) {
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shape = new Ellipse2D.Double(0.25*width, 0.25*height, width, height);
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scaleX = 200/width;
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scaleY = 200/height;
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int iw = 300, ih = 300;
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bi = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
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Graphics2D g2 = bi.createGraphics();
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g2.setColor(Color.white);
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g2.fillRect(0, 0, iw, ih);
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g2.setColor(Color.black);
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g2.scale(scaleX,scaleY);
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g2.setStroke(new BasicStroke(0));
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g2.draw(shape);
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}
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static void compare(BufferedImage i1, BufferedImage i2) {
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int w = i1.getWidth(), h = i1.getHeight();
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for (int y = 0; y < h; y++) {
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for (int x = 0; x < w; x++) {
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int p1 = i1.getRGB(x, y);
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int p2 = i2.getRGB(x, y);
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if (p1 != p2) {
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System.out.println("images differ at " + x + " " + y);
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}
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}
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}
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}
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}
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