<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>sampling.qml Example File | Qt Quick 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-effects-particles.html#shapes">Qt Quick Examples - Shapes</a></td><td >sampling.qml Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtquick-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">sampling.qml Example File</h1> <span class="subtitle">shapes/content/sampling.qml</span> <!-- $$$shapes/content/sampling.qml-description --> <div class="descr"> <a name="details"></a> <pre class="qml"> /**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtQuick module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.9 import QtQuick.Shapes 1.0 Rectangle { id: root width: 1024 height: 768 property color col: "lightsteelblue" gradient: Gradient { GradientStop { position: 0.0; color: Qt.tint(root.col, "#20FFFFFF") } GradientStop { position: 0.1; color: Qt.tint(root.col, "#20AAAAAA") } GradientStop { position: 0.9; color: Qt.tint(root.col, "#20666666") } GradientStop { position: 1.0; color: Qt.tint(root.col, "#20000000") } } Row { anchors.fill: parent anchors.margins: 20 spacing: 40 Column { spacing: 40 Text { text: "Original" } // A simple Shape without anything special. Rectangle { color: "lightGray" width: 400 height: 200 Shape { x: 30 y: 20 width: 50 height: 50 scale: 2 ShapePath { strokeColor: "green" NumberAnimation on strokeWidth { from: 1; to: 20; duration: 5000 } fillColor: "transparent" capStyle: ShapePath.RoundCap startX: 40; startY: 30 PathQuad { x: 50; y: 80; controlX: 0; controlY: 80 } PathLine { x: 150; y: 80 } PathQuad { x: 160; y: 30; controlX: 200; controlY: 80 } } } } Text { text: "Supersampling (2x)" } // Now let's use 2x supersampling via layers. This way the entire subtree // is rendered into an FBO twice the size and then drawn with linear // filtering. This allows having some level of AA even when there is no // support for multisample framebuffers. Rectangle { id: supersampledItem color: "lightGray" width: 400 height: 200 layer.enabled: true layer.smooth: true layer.textureSize: Qt.size(supersampledItem.width * 2, supersampledItem.height * 2) Shape { x: 30 y: 20 width: 50 height: 50 scale: 2 ShapePath { strokeColor: "green" NumberAnimation on strokeWidth { from: 1; to: 20; duration: 5000 } fillColor: "transparent" capStyle: ShapePath.RoundCap startX: 40; startY: 30 PathQuad { x: 50; y: 80; controlX: 0; controlY: 80 } PathLine { x: 150; y: 80 } PathQuad { x: 160; y: 30; controlX: 200; controlY: 80 } } } } } Column { spacing: 40 Text { text: "Multisampling (4x)" } // Now let's use 4x MSAA, again via layers. This needs support for // multisample renderbuffers and framebuffer blits. Rectangle { color: "lightGray" width: 400 height: 200 layer.enabled: true layer.smooth: true layer.samples: 4 Shape { x: 30 y: 20 width: 50 height: 50 scale: 2 ShapePath { strokeColor: "green" NumberAnimation on strokeWidth { from: 1; to: 20; duration: 5000 } fillColor: "transparent" capStyle: ShapePath.RoundCap startX: 40; startY: 30 PathQuad { x: 50; y: 80; controlX: 0; controlY: 80 } PathLine { x: 150; y: 80 } PathQuad { x: 160; y: 30; controlX: 200; controlY: 80 } } } } } } } </pre> </div> <!-- @@@shapes/content/sampling.qml --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. 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