Planets QML example for Qt3D

+ Improved earth clouds
- Some weirdness with alpha, easily visible with rings. Might be the
  textures, although the alpha on them seems fine with image viewer.
- Earth clouds seem to have the alpha issue as well.

Change-Id: Ibdfa49472790d3fc797e269b52986b71d93876f2
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>
(cherry picked from commit 30f9015933957eaf9533229f94b1bcd48a8ce3ed)

1 files changed, 88 insertions, 0 deletions

diff --git a/examples/qt3d/planets-qml/PlanetButton.qml b/examples/qt3d/planets-qml/PlanetButton.qml
new file mode 100644
index 000000000..f68c70052
--- /dev/null
+++ b/examples/qt3d/planets-qml/PlanetButton.qml
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+Rectangle {
+    id: planetButton
+
+    property alias text: planetText.text
+    property alias source: planetImage.source
+    property alias focusPlanet: planetImage.focusPlanet
+    property Item planetSelector: parent.parent
+    property int buttonSize: 70
+
+    width: buttonSize
+    height: buttonSize
+    color: "transparent"
+
+    Image {
+        id: planetImage
+        anchors.fill: parent
+        property int focusPlanet
+
+        MouseArea {
+            anchors.fill: parent
+            hoverEnabled: true
+            onClicked: { planetSelector.focusedPlanet = focusPlanet }
+            onEntered: PropertyAnimation { target: planetText; property: "opacity"; to: 1 }
+            onExited: PropertyAnimation { target: planetText;
+                property: "opacity"
+                to: {
+                    if (planetText.text != "Solar System")
+                       0
+                    else
+                       1
+                }
+            }
+        }
+    }
+
+    Text {
+        id: planetText
+        anchors.centerIn: parent
+        font.family: "Helvetica"
+        font.pixelSize: 16
+        font.weight: Font.Light
+        color: "white"
+        opacity: {
+            if (text == "Solar System")
+                opacity = 1
+            else
+                opacity = 0
+        }
+    }
+}