Three scene graph examples with docs.

How to make a custom QSGGeometry, how to use QSGSimpleMaterial and how
to use render with raw GL.

Change-Id: I3e5a32b6ae12d7d781c11050ed26a54845e92cca
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/examples/quick/scenegraph/customgeometry/main.qml b/examples/quick/scenegraph/customgeometry/main.qml
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+++ b/examples/quick/scenegraph/customgeometry/main.qml
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [1]
+import QtQuick 2.0
+import CustomGeometry 1.0
+//! [1] //! [2]
+Item {
+    width: 300
+    height: 200
+
+    BezierCurve {
+        id: line
+        anchors.fill: parent
+        anchors.margins: 20
+//! [2] //! [3]
+        property real t
+        SequentialAnimation on t {
+            NumberAnimation { to: 1; duration: 2000; easing.type: Easing.InOutQuad }
+            NumberAnimation { to: 0; duration: 2000; easing.type: Easing.InOutQuad }
+            loops: Animation.Infinite
+        }
+
+        p2: Qt.point(t, 1 - t)
+        p3: Qt.point(1 - t, t)
+    }
+//! [3] //! [4]
+    Text {
+        anchors.bottom: line.bottom
+
+        x: 20
+        width: parent.width - 40
+        wrapMode: Text.WordWrap
+
+        text: "This curve is a custom scene graph item, implemented using GL_LINE_STRIP"
+    }
+}
+//! [4]