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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt3D 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 Nokia Corporation 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 "quadplane.h"
#include "qgraphicsrotation3d.h"
#include <QImage>
#include <QPainter>
QGLMaterial *qCreateFloor()
{
quint32 sz = 512;
QImage image(QSize(sz, sz), QImage::Format_ARGB32);
QRgb col = qRgba(196, 196, 200, 255);
image.fill(col);
QPainter painter(&image);
QPen pen = painter.pen();
pen.setColor(QColor(col).darker());
pen.setWidth(2);
painter.setPen(pen);
for (quint32 i = 0; i < sz; i += (sz / 8))
{
painter.drawLine(0, i, sz-1, i);
painter.drawLine(i, 0, i, sz-1);
}
painter.end();
QGLMaterial *mat = new QGLMaterial;
QGLTexture2D *tex = new QGLTexture2D(mat);
tex->setImage(image);
mat->setTexture(tex);
return mat;
}
QuadPlane::QuadPlane(QObject *parent, QSizeF size, int level)
: QGLSceneNode(parent)
{
setObjectName("QuadPlane");
if (level > 8)
level = 8;
if (level < 1)
level = 1;
int divisions = 1;
for ( ; level--; divisions *= 2) {} // integer 2**n
QSizeF div = size / float(divisions);
QSizeF half = size / 2.0f;
QGLBuilder builder;
QGeometryData zip;
QGeometryData zip2;
for (int yy = 0; yy <= divisions; ++yy)
{
qreal y = half.height() - float(yy) * div.height();
qreal texY = float(yy) / divisions;
for (int xx = 0; xx <= divisions; ++xx)
{
qreal x = half.width() - float(xx) * div.width();
qreal texX = float(xx) / divisions;
zip.appendVertex(QVector3D(x, y, 0));
zip.appendTexCoord(QVector2D(1.0f - texX, 1.0f - texY));
}
if (yy > 0)
builder.addQuadsInterleaved(zip, zip2);
zip2 = zip;
zip2.detach();
zip.clear();
}
QGLSceneNode *n = builder.finalizedSceneNode();
addNode(n);
n->setMaterial(qCreateFloor());
QGraphicsRotation3D *rot = new QGraphicsRotation3D(n);
rot->setAxis(QVector3D(1, 0, 0));
rot->setAngle(90.0f);
n->addTransform(rot);
}
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