Combine 3 examples into one qmlsurfacegallery

Combine qmlsurface, qml3doscilloscope, and qmlspectrogram into
one surface graph gallery example.

Pick-to: 6.5
Fixes: QTBUG-110700
Change-Id: Ic8319884a61a12c5d65c68314c958a86d62a65b1
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>

2 files changed, 0 insertions, 97 deletions

diff --git a/examples/datavisualization/qmlsurface/doc/images/qmlsurface-example.png b/examples/datavisualization/qmlsurface/doc/images/qmlsurface-example.png
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--- a/examples/datavisualization/qmlsurface/doc/images/qmlsurface-example.png
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diff --git a/examples/datavisualization/qmlsurface/doc/src/qmlsurface.qdoc b/examples/datavisualization/qmlsurface/doc/src/qmlsurface.qdoc
deleted file mode 100644
index 1f338536..00000000
--- a/examples/datavisualization/qmlsurface/doc/src/qmlsurface.qdoc
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@@ -1,97 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example qmlsurface
-    \meta tags {DataVisualization, Surface3D, Height Map}
-    \meta category {Graphics}
-    \title Surface Graph from Height Data
-    \ingroup qtdatavisualization_qmlexamples
-    \brief Using Surface3D in a QML application.
-
-    The surface graph example shows how to make a simple 3D surface plot using Surface3D
-    with QML.
-
-    \image qmlsurface-example.png
-
-    The focus in this example is on generating a surface graph from height data, so in this section
-    we skip explaining the application creation. For more detailed QML example documentation,
-    see \l{Simple Scatter Graph}.
-
-    \include examples-run.qdocinc
-
-    \section1 Adding Data to the Graph
-
-    This example shows two methods to set data to surface graph, using the HeightMapSurfaceDataProxy
-    and ItemModelSurfaceDataProxy. First we go through setting the data using the height map specific
-    data proxy. It is done with the code snippet below. The proxy itself is contained in a
-    Surface3DSeries. Inside the HeightMapSurfaceDataProxy the \c heightMapFile specifies the
-    image file containing the height data. The value properties in the proxy define the minimum
-    and maximum values for surface area width and depth. This example shows the terrain around Tycho
-    crater at imaginary position from 67 to 97 and from 30 to 60. Note that on the graph the scale
-    on the Y dimension exaggerates the height.
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 4
-
-    The other method to set surface data used in this example is with model mapping. We do that by
-    first defining a \c ListModel containing the data for the surface:
-
-    \snippet qmlsurface/qml/qmlsurface/Data.qml 0
-    \dots 4
-
-    Then we set up a Surface3DSeries with a ItemModelSurfaceDataProxy:
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 5
-    \dots
-
-    We add the actual data to the \c itemModel of the ItemModelSurfaceDataProxy. We also define the
-    roles for columns, rows and values. In this example the row holds values for longitude, column
-    for latitude and the value is for height.
-
-    \dots 0
-    \snippet qmlsurface/qml/qmlsurface/main.qml 6
-
-    \section1 Showing Data
-
-    In the \c main.qml, we set up the Surface3D element to show the data and various UI elements
-    to illustrate few interesting features.
-
-    First is the gradient to be used for the surface, which can be defined as seen in the following
-    snippet. With the ColorGradient we set example colors from position 0.0 to 1.0.
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 0
-
-    This element is set into the \c baseGradients property in the \c theme used in Surface3D:
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 7
-
-    Other interesting features can be controlled with buttons.
-
-    The first button is to toggle on and off the surface grid, for which we use the following code:
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 1
-
-    Second button is for surface shading mode, which is controlled with this code:
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 2
-
-    Third button is for series visibility, which is controlled with this code:
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 8
-
-    Notice that the \c drawMode and \c flatShadingEnable properties are set for both series.
-
-    Fourth and fifth buttons are for controlling background features.
-
-    The last button is for switching between the two series, one of which uses
-    HeightMapSurfaceDataProxy and the other one ItemModelSurfaceDataProxy. For this we use the
-    following code:
-
-    \snippet qmlsurface/qml/qmlsurface/main.qml 3
-
-    We also set the maximum value to 500 in model proxy to make the surface flatter and
-    250 on height map proxy to show exaggerated height. At the same time the middle color position
-    on the gradient is modified to match the value range change.
-
-    \section1 Example Contents
-*/