Add example application demonstrating the use of painted textures

Change-Id: Id134a8143e72b74deee077db1421f2ab64b0a328
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

4 files changed, 392 insertions, 0 deletions

diff --git a/tests/manual/paintedtexture-cpp/main.cpp b/tests/manual/paintedtexture-cpp/main.cpp
new file mode 100644
index 000000000..d8f5c515c
--- /dev/null
+++ b/tests/manual/paintedtexture-cpp/main.cpp
@@ -0,0 +1,140 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "scene.h"
+
+#include <QGuiApplication>
+
+#include <Qt3DCore/qentity.h>
+#include <QtGui/QScreen>
+
+#include <QtWidgets/QApplication>
+#include <QtWidgets/QWidget>
+#include <QtWidgets/QHBoxLayout>
+#include <QtWidgets/QSlider>
+#include <QtWidgets/QLabel>
+#include <QtWidgets/QPushButton>
+
+#include <Qt3DRender/qcamera.h>
+#include <Qt3DInput/QInputAspect>
+#include <Qt3DExtras/qforwardrenderer.h>
+#include <Qt3DExtras/qt3dwindow.h>
+#include <Qt3DExtras/qfirstpersoncameracontroller.h>
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    Qt3DExtras::Qt3DWindow *view = new Qt3DExtras::Qt3DWindow();
+    view->defaultFramegraph()->setClearColor(QColor(QRgb(0x4d4d4f)));
+    QWidget *container = QWidget::createWindowContainer(view);
+    QSize screenSize = view->screen()->size();
+    container->setMinimumSize(QSize(200, 100));
+    container->setMaximumSize(screenSize);
+
+    Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
+    view->registerAspect(input);
+
+    // Root entity
+    Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
+
+    // Camera
+    Qt3DRender::QCamera *cameraEntity = view->camera();
+
+    cameraEntity->setPosition(QVector3D(0, 0, 20.0f));
+    cameraEntity->setUpVector(QVector3D(0, 1, 0));
+    cameraEntity->setViewCenter(QVector3D(0, 0, 0));
+
+    // For camera controls
+    Qt3DExtras::QFirstPersonCameraController *camController = new Qt3DExtras::QFirstPersonCameraController(rootEntity);
+    camController->setCamera(cameraEntity);
+
+    // scene
+    Scene *scene = new Scene(rootEntity);
+
+    // Set root object of the scene
+    view->setRootEntity(rootEntity);
+
+    // 'Generate New' Button
+    QPushButton *genNewButton = new QPushButton();
+    genNewButton->setText("Generate New");
+    QObject::connect(genNewButton, &QPushButton::pressed, scene, &Scene::redrawTexture);
+
+    // current size label
+    QLabel *sizeLabel = new QLabel();
+    sizeLabel->setText(QString("Current Size: 128x128"));
+
+    // 'Change Size' Slider
+    QSlider *changeSizeSlider = new QSlider();
+    changeSizeSlider->setOrientation(Qt::Horizontal);
+    changeSizeSlider->setMinimum(0);
+    changeSizeSlider->setMaximum(4);
+    QObject::connect(changeSizeSlider, &QSlider::valueChanged, [scene, sizeLabel](int value) {
+        int sz = 128 << value;
+        scene->setSize(QSize(sz, sz));
+        sizeLabel->setText(QString("Current Size: %1x%1").arg(sz));
+    });
+
+    // create widget
+    QWidget *widget = new QWidget;
+    widget->setWindowTitle(QStringLiteral("QPaintedTexture Example"));
+
+    QVBoxLayout *hLayout = new QVBoxLayout(widget);
+    hLayout->addWidget(container, 1);
+    hLayout->addWidget(genNewButton, 1);
+    hLayout->addWidget(changeSizeSlider, 1);
+    hLayout->addWidget(sizeLabel);
+
+    // Show window
+    widget->show();
+    widget->resize(1200, 800);
+
+    return app.exec();
+}
diff --git a/tests/manual/paintedtexture-cpp/paintedtexture-cpp.pro b/tests/manual/paintedtexture-cpp/paintedtexture-cpp.pro
new file mode 100644
index 000000000..448d90ecd
--- /dev/null
+++ b/tests/manual/paintedtexture-cpp/paintedtexture-cpp.pro
@@ -0,0 +1,12 @@
+!include( ../manual.pri ) {
+    error( "Couldn't find the manual.pri file!" )
+}
+
+QT += 3dcore 3drender 3dinput 3dextras widgets
+
+SOURCES += \
+    main.cpp \
+    scene.cpp
+
+HEADERS += \
+    scene.h
diff --git a/tests/manual/paintedtexture-cpp/scene.cpp b/tests/manual/paintedtexture-cpp/scene.cpp
new file mode 100644
index 000000000..19bcdbd22
--- /dev/null
+++ b/tests/manual/paintedtexture-cpp/scene.cpp
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "scene.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QTimer>
+#include <QtCore/QDateTime>
+
+#include <QtGui/QPainter>
+#include <Qt3DRender/QPaintedTextureImage>
+#include <Qt3DRender/QTexture>
+
+#include <Qt3DExtras/QCuboidMesh>
+#include <Qt3DExtras/QDiffuseMapMaterial>
+
+class MyTextureImage : public Qt3DRender::QPaintedTextureImage
+{
+public:
+    MyTextureImage(int w, int h)
+    {
+        setSize(QSize(w, h));
+    }
+
+protected:
+    void paint(QPainter *painter)
+    {
+        int w = painter->device()->width();
+        int h = painter->device()->height();
+
+        // clear to white
+        painter->fillRect(0, 0, w, h, QColor(255, 255, 255));
+
+        // draw some text
+        painter->setPen(QColor(255, 0, 0));
+        painter->setFont(QFont("Times", 30, QFont::Normal, true));
+        painter->drawText(w / 8, h / 6, QDateTime::currentDateTime().toString());
+
+        painter->setPen(QPen(QBrush(QColor(0, 0, 0)) ,10));
+        painter->setBrush(QColor(0, 0, 255));
+
+        // draw some circles
+        for (int i = 0; i < m_circleCount; i++) {
+            float r = w / 8.f;
+            float cw =  0.25 * w +   0.5 * h * (i % 2);
+            float ch = 0.375 * w + 0.375 * h * (i / 2);
+            painter->drawEllipse(QPointF(cw, ch), r, r);
+        }
+
+        m_circleCount = (m_circleCount % 4) + 1;
+    }
+
+    int m_circleCount = 1;
+};
+
+Scene::Scene(Qt3DCore::QEntity *rootEntity)
+    : m_rootEntity(rootEntity)
+{
+    // Cuboid shape data
+    Qt3DExtras::QCuboidMesh *cuboid = new Qt3DExtras::QCuboidMesh();
+
+    // CuboidMesh Transform
+    m_transform = new Qt3DCore::QTransform();
+    m_transform->setScale(4.0f);;
+
+    // create texture
+    m_paintedTextureImage = new MyTextureImage(128, 128);
+    m_paintedTextureImage->update();
+
+    Qt3DRender::QTexture2D *tex = new Qt3DRender::QTexture2D();
+    tex->addTextureImage(m_paintedTextureImage);
+
+    Qt3DExtras::QDiffuseMapMaterial *mat = new Qt3DExtras::QDiffuseMapMaterial();
+    mat->setAmbient(QColor(64, 64, 64));
+    mat->setSpecular(QColor(255, 255, 255));
+    mat->setDiffuse(tex);
+
+    //Cuboid
+    m_cuboidEntity = new Qt3DCore::QEntity(m_rootEntity);
+    m_cuboidEntity->addComponent(cuboid);
+    m_cuboidEntity->addComponent(mat);
+    m_cuboidEntity->addComponent(m_transform);
+
+    QTimer *timer = new QTimer(this);
+    connect(timer, &QTimer::timeout, this, &Scene::updateTimer);
+    timer->start(50);
+}
+
+Scene::~Scene()
+{
+}
+
+void Scene::redrawTexture()
+{
+    m_paintedTextureImage->update();
+}
+
+void Scene::setSize(QSize size)
+{
+    m_paintedTextureImage->setSize(size);
+}
+
+void Scene::updateTimer()
+{
+    m_transform->setRotation(QQuaternion::fromAxisAndAngle(0, 1, 0, m_angle));
+    m_angle += 0.4f;
+}
diff --git a/tests/manual/paintedtexture-cpp/scene.h b/tests/manual/paintedtexture-cpp/scene.h
new file mode 100644
index 000000000..84d98247d
--- /dev/null
+++ b/tests/manual/paintedtexture-cpp/scene.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SCENE_H
+#define SCENE_H
+
+#include <QtCore/QObject>
+
+#include <Qt3DCore/QEntity>
+#include <Qt3DCore/QTransform>
+#include <Qt3DRender/QPaintedTextureImage>
+
+class Scene : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit Scene(Qt3DCore::QEntity *rootEntity);
+    ~Scene();
+
+public Q_SLOTS:
+    void redrawTexture();
+    void setSize(QSize size);
+
+private Q_SLOTS:
+    void updateTimer();
+
+private:
+    Qt3DCore::QEntity *m_rootEntity;
+
+    Qt3DCore::QEntity *m_cuboidEntity;
+    Qt3DCore::QTransform *m_transform;
+    Qt3DRender::QPaintedTextureImage *m_paintedTextureImage;
+
+    float m_angle = 0;
+};
+
+#endif // SCENE_H
+