From 2bc44ba16bb86bd7ebc7eb59ae78eda80a737984 Mon Sep 17 00:00:00 2001 From: Laszlo Agocs Date: Fri, 6 Jun 2014 16:53:33 +0200 Subject: Add a QQuickWidget - QQuickView comparison example Besides serving as a side-by-side test tool for QQuickView and QQuickWidget (including multisampling), it also demonstrates some useful practices for rendering 3D content via QQuickFramebufferObject. Done-with: Paul Olav Tvete Change-Id: Ie73e998ee91e32ef1535dd6f0f65c8a69addcc5e Reviewed-by: Paul Olav Tvete --- .../quickwidgets/qquickviewcomparison/logo.cpp | 141 +++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 examples/quick/quickwidgets/qquickviewcomparison/logo.cpp (limited to 'examples/quick/quickwidgets/qquickviewcomparison/logo.cpp') diff --git a/examples/quick/quickwidgets/qquickviewcomparison/logo.cpp b/examples/quick/quickwidgets/qquickviewcomparison/logo.cpp new file mode 100644 index 0000000000..1ba47ddfb5 --- /dev/null +++ b/examples/quick/quickwidgets/qquickviewcomparison/logo.cpp @@ -0,0 +1,141 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Digia Plc and its Subsidiary(-ies) 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "logo.h" +#include + +Logo::Logo() + : m_count(0) +{ + m_data.resize(2500 * 6); + + const GLfloat x1 = +0.06f; + const GLfloat y1 = -0.14f; + const GLfloat x2 = +0.14f; + const GLfloat y2 = -0.06f; + const GLfloat x3 = +0.08f; + const GLfloat y3 = +0.00f; + const GLfloat x4 = +0.30f; + const GLfloat y4 = +0.22f; + + quad(x1, y1, x2, y2, y2, x2, y1, x1); + quad(x3, y3, x4, y4, y4, x4, y3, x3); + + extrude(x1, y1, x2, y2); + extrude(x2, y2, y2, x2); + extrude(y2, x2, y1, x1); + extrude(y1, x1, x1, y1); + extrude(x3, y3, x4, y4); + extrude(x4, y4, y4, x4); + extrude(y4, x4, y3, x3); + + const int NumSectors = 100; + + for (int i = 0; i < NumSectors; ++i) { + GLfloat angle = (i * 2 * M_PI) / NumSectors; + GLfloat angleSin = qSin(angle); + GLfloat angleCos = qCos(angle); + const GLfloat x5 = 0.30f * angleSin; + const GLfloat y5 = 0.30f * angleCos; + const GLfloat x6 = 0.20f * angleSin; + const GLfloat y6 = 0.20f * angleCos; + + angle = ((i + 1) * 2 * M_PI) / NumSectors; + angleSin = qSin(angle); + angleCos = qCos(angle); + const GLfloat x7 = 0.20f * angleSin; + const GLfloat y7 = 0.20f * angleCos; + const GLfloat x8 = 0.30f * angleSin; + const GLfloat y8 = 0.30f * angleCos; + + quad(x5, y5, x6, y6, x7, y7, x8, y8); + + extrude(x6, y6, x7, y7); + extrude(x8, y8, x5, y5); + } +} + +void Logo::add(const QVector3D &v, const QVector3D &n) +{ + GLfloat *p = m_data.data() + m_count; + *p++ = v.x(); + *p++ = v.y(); + *p++ = v.z(); + *p++ = n.x(); + *p++ = n.y(); + *p++ = n.z(); + m_count += 6; +} + +void Logo::quad(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2, GLfloat x3, GLfloat y3, GLfloat x4, GLfloat y4) +{ + QVector3D n = QVector3D::normal(QVector3D(x4 - x1, y4 - y1, 0.0f), QVector3D(x2 - x1, y2 - y1, 0.0f)); + + add(QVector3D(x1, y1, -0.05f), n); + add(QVector3D(x4, y4, -0.05f), n); + add(QVector3D(x2, y2, -0.05f), n); + + add(QVector3D(x3, y3, -0.05f), n); + add(QVector3D(x2, y2, -0.05f), n); + add(QVector3D(x4, y4, -0.05f), n); + + n = QVector3D::normal(QVector3D(x1 - x4, y1 - y4, 0.0f), QVector3D(x2 - x4, y2 - y4, 0.0f)); + + add(QVector3D(x4, y4, 0.05f), n); + add(QVector3D(x1, y1, 0.05f), n); + add(QVector3D(x2, y2, 0.05f), n); + + add(QVector3D(x2, y2, 0.05f), n); + add(QVector3D(x3, y3, 0.05f), n); + add(QVector3D(x4, y4, 0.05f), n); +} + +void Logo::extrude(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) +{ + QVector3D n = QVector3D::normal(QVector3D(0.0f, 0.0f, -0.1f), QVector3D(x2 - x1, y2 - y1, 0.0f)); + + add(QVector3D(x1, y1, +0.05f), n); + add(QVector3D(x1, y1, -0.05f), n); + add(QVector3D(x2, y2, +0.05f), n); + + add(QVector3D(x2, y2, -0.05f), n); + add(QVector3D(x2, y2, +0.05f), n); + add(QVector3D(x1, y1, -0.05f), n); +} -- cgit v1.2.3