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>

1 files changed, 102 insertions, 0 deletions

diff --git a/examples/qt3d/planets-qml/FpsDisplay.qml b/examples/qt3d/planets-qml/FpsDisplay.qml
new file mode 100644
index 000000000..6dc5d7f3a
--- /dev/null
+++ b/examples/qt3d/planets-qml/FpsDisplay.qml
@@ -0,0 +1,102 @@
+/****************************************************************************
+**
+** 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
+
+Item {
+    id: fpsDisplayControl
+    property bool hidden: true
+    property real fps: 0.0
+
+    onHiddenChanged: {
+        if (fpsDisplayControl.hidden)
+            fpsDisplay.color = "transparent"
+        else
+            fpsDisplay.color = "#000000FF"
+    }
+
+    onFpsChanged: {
+        fpsDisplay.updateFps()
+    }
+
+    Rectangle {
+        anchors.fill: parent
+        id: fpsDisplay
+        color: "transparent"
+
+        property real maxFps: 60.0
+        property color maxFpsColor: "#5500FF00"
+        property color minFpsColor: "#55FF0000"
+
+        function updateFps() {
+            var scale = (fps > maxFps)?1.0:(fps/maxFps)
+            var r = (1 - scale) * minFpsColor.r + scale * maxFpsColor.r
+            var g = (1 - scale) * minFpsColor.g + scale * maxFpsColor.g
+            var b = (1 - scale) * minFpsColor.b + scale * maxFpsColor.b
+            var a = (1 - scale) * minFpsColor.a + scale * maxFpsColor.a
+            fpsCauge.height = scale * fpsDisplay.height
+            fpsCauge.color = Qt.rgba(r, g, b, a)
+        }
+
+        Rectangle {
+            id: fpsCauge
+            width: parent.width
+            anchors.bottom: parent.bottom
+            visible: !fpsDisplayControl.hidden
+        }
+
+        Text {
+            id: fpsText
+            text: ""+(fps | 0)
+            font.family: "Helvetica"
+            font.pixelSize: 16
+            font.weight: Font.Light
+            color: "white"
+            anchors.fill: parent
+            verticalAlignment: Text.AlignVCenter
+            horizontalAlignment: Text.AlignHCenter
+            visible: !fpsDisplayControl.hidden
+        }
+    }
+
+    MouseArea {
+        anchors.fill: parent
+        onClicked: {
+            fpsDisplayControl.hidden = !fpsDisplayControl.hidden
+        }
+    }
+}
+