mirror of
https://github.com/tiennm99/java-design-patterns.git
synced 2026-05-19 15:27:13 +00:00
Ilkka Seppälä
0ca162a55c
* remove spring dep move junit, logging, mockito under dep mgmt * upgrade anti-corruption-layer deps * async method invocation * balking, bloc * bridge to bytecode * caching * callback - cqrs * component - health check * hexagonal - metadata mapping * rest of the patterns * remove checkstyle, take spotless into use
73 lines
2.9 KiB
Java
73 lines
2.9 KiB
Java
/*
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* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
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*
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* The MIT License
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* Copyright © 2014-2022 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.doublebuffer;
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import java.util.List;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang3.tuple.MutablePair;
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/**
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* Double buffering is a term used to describe a device that has two buffers. The usage of multiple
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* buffers increases the overall throughput of a device and helps prevents bottlenecks. This example
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* shows using double buffer pattern on graphics. It is used to show one image or frame while a
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* separate frame is being buffered to be shown next. This method makes animations and games look
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* more realistic than the same done in a single buffer mode.
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*/
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@Slf4j
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public class App {
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/**
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* Program main entry point.
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*
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* @param args runtime arguments
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*/
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public static void main(String[] args) {
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final var scene = new Scene();
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var drawPixels1 =
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List.of(new MutablePair<>(1, 1), new MutablePair<>(5, 6), new MutablePair<>(3, 2));
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scene.draw(drawPixels1);
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var buffer1 = scene.getBuffer();
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printBlackPixelCoordinate(buffer1);
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var drawPixels2 = List.of(new MutablePair<>(3, 7), new MutablePair<>(6, 1));
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scene.draw(drawPixels2);
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var buffer2 = scene.getBuffer();
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printBlackPixelCoordinate(buffer2);
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}
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private static void printBlackPixelCoordinate(Buffer buffer) {
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StringBuilder log = new StringBuilder("Black Pixels: ");
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var pixels = buffer.getPixels();
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for (var i = 0; i < pixels.length; ++i) {
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if (pixels[i] == Pixel.BLACK) {
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var y = i / FrameBuffer.WIDTH;
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var x = i % FrameBuffer.WIDTH;
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log.append(" (").append(x).append(", ").append(y).append(")");
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}
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}
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LOGGER.info(log.toString());
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}
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}
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