LuciadCPillar Samples

The sample shows all military icons or tactical graphics for a specific symbology, with random modifier values. Icons and tactical graphics are labeled as prescribed by the military symbol standards.

Use the menu to switch between icons and tactical graphics or to change the symbology.

The First Person Camera Controller allows the control of the camera and modify its position using a predefined keymap to move and the mouse to change the camera's yaw and pitch.

The Orbit camera consists of a camera orbiting around a cube, keeping that point of interest in the center of the view. This controller uses the Map::IRendererCallback API to modify the camera on each repaint of the Map.

In the sample you will see various shapes and lines that are stroked using the Complex Stroke API, grouped into themes. You can see how the shape is styled in the sample code.

You can select an object to start editing it. Notice how the patterns dynamically follow the shape while editing.

The Cookbook Theme is intended for developers. You can experiment with complex stroke line styles by changing sample snippets, or by creating new complex stroke styles and visualizing the results. You can also edit shapes to check how the complex stroke line style is drawn over the vertices of a shape.

There is a toolbar that allows you to:

• Open supported files
• Connect to a web service (WMS, WMTS, WFS, LTS, OGC 3D tiles, HSPC, HERE Maps, and MBTiles)
• Add a basic vector model showing several supported geometries using default styling.
• Add a layer with dynamic data. The rendering of the dynamic data changes when you zoom in.

There is a layer control allowing you to change the visibility of layers and to re-order them.

Selecting a feature lists its properties in a panel below the layer control. Clicking a WMS or WMTS layer sends a GetFeatureInfo request, and the properties of the returned feature appear in the same panel.

The Mapbox style file referenced within the 'Connect to MBTiles' license file is available at: https://sampledata.luciad.com/data/mbtiles/osm_styles/osm-bright/LICENSE.md. The default MBTiles dataset of Belgium is provided by OpenStreetMap.

Instructions

Creating features

Features can be added to the map using the button in the toolbar.

Polylines, polyline rings and bezier curves can be created using a click mode. Polylines and polyline rings can also be created with a free hand mode. In click mode, use double-click or touch long press to end creation. For bezier curves the creation ends when the last point is placed. In free hand mode, the feature is finalized as soon as the drag gesture ends.

Editing features

Click or touch a feature to select it and show its edit handles. Drag the edit handles around to change the geometry.

Points can be added at the beginning or the end of a polyline using the Shift modifier while clicking with the left mouse button.

Points can be removed from a polyline or polyline ring using Ctrl-click or touch long press.

Tutorial layers

• Tutorial 1: the tutorial on how to customize an existing handles provider
• Tutorial 2: the tutorial on how to add extra handles to an existing handles provider
• Tutorial 3: the tutorial on how to create a custom handles provider

It has a map with roads data:

• The type of roads that are loaded are configured per map scale.
• The styling of the data depends on their type and on the map scale.

It has a map with following data:

• Bluemarble raster background
• Rivers in Switzerland
• Elevation data for Switzerland

Features

Dataset

This is a Gaussian splatting dataset of the Museum of Zoology, maintained by the Catholic University of Leuven. The museum houses a collection of 5000 animals and skeletons, among which the skeleton of a bowhead whale (Balaena mysticetus) hanging from the ceiling. It was captured with permission of the university.

To load your own Gaussian splatting dataset in LuciadCPillar, see the Data Formats sample > Connect to service > OGC 3D Tiles.

Navigation

• Use the arrow keys or W/A/S/D to move horizontally, and Q/E to move down and up.
• Drag with the right mouse button to turn the camera.
• Hold Shift to move faster, or Space to move slower.
• On a touch screen, one finger turns the camera in place, two fingers pan, and pinching zooms.
• Select a point of interest in the Locations panel to fly towards it.

3D Data

Use Ogc3DTilesModelDecoder to create an ITileSet3DModel and use TileSet3DLayer to create a layer for it. Pass a GaussianSplatsStyle to the layer builder to decide how the splats are painted. This works for any OGC 3D Tiles tile set that contains SPZ, or glTF with SPZ payloads.

Gaussian splatting data is often not georeferenced: the model then has a Cartesian reference and carries no information about where on Earth it belongs. This sample recognizes that case and hands the model a GeoLocation, which places it at a chosen location on the globe.

Gaussian Splat Settings

The Quality preset in the Options panel of the side bar, from Low to Ultra, balances visual fidelity against rendering performance. Each preset combines a resolutionScale, an opacityCutoff and a highPrecisionColors setting on the GaussianSplatsStyle of the splat layer, together with a quality factor on the layer itself, which decides how much detail the tile set loads.

The style keeps enableDepth on, so the splats are taken into account when querying the depth at a pixel and they can occlude other data such as meshes, point clouds and features. Querying the depth is also what lets the navigation act on the splats themselves.

It has a map with states, rivers and cities data. Labels are decluttered to prevent label overlap and to avoid overlap with the view bounds.

Cities are filtered based on their population and become visible when you zoom in. The city labels contain more information when a city is selected and the used font size is derived from the population of the city. When a city's label can not be placed next to the city, a line (called pin) is drawn from the city location to its label. City labels are configured with a priority such that the labels of larger cities are shown in favor of labels of smaller cities when there is no room to display all labels.

Rivers only appear when the map is zoomed in enough and their labels are oriented based the on the river's direction.

States have labels which are positioned inside the state area. The state labels have lower priorities than city labels.

Features

3D Data

Use Ogc3DTilesModelDecoder to create an ITileSet3DModel and use TileSet3DLayer to create a layer for it. You can load 3D tileset data on 2D and 3D maps.

Graphics Effects

The Effects Settings tool shows the graphics effects that can be applied on a 3D scene:

• Eye-dome lighting (Depth Perception).
• Ambient occlusion (Ambient Light).

Expression based styling

TileSet3DLayer allows to set a PointCloudStyle that defines the expression based styles for the point cloud data. This is demonstrated for the LIDAR layer that contains railways station point cloud data. There are three types of expressions:

• The colorExpression property defines colors for point. By default colors are defined in the tile data. If no color is defined, LuciadCPillar paints them using a gray color. You can use StyleExpressionFactory to define an expression that evaluates to a color value, e.g. based on attributes in the data. This sample shows how you can create a color expression based on the height of the points or on their intensity.
• The visibilityExpression property is a filter that determines point cloud data visibility. You can use StyleExpressionFactory to define an expression that evaluates to a boolean value. This sample shows how to filter points based on their height.
• Point size expressions can be configured on the PointCloudStyle builder. You can use StyleExpressionFactory to define an expression that evaluates to a double value, that is interpreted as pixels or meters. This sample adds a slider that can be used to choose a point size.

Data

The Marseille 3D mesh data used in this sample was created by Airbus with Airbus Street Factory. The train station lidar data was created by Flying-Cam for Altametris and SNCF Réseau. Both datasets are available as OGC 3D Tiles services, hosted by our LuciadFusion server on https://sampleservices.luciad.com/. You can use these services only for simple tests and demonstrations. You should not rely on either of them in any way.

The map shows the Lucerne city mesh and a set of panorama locations along a track near the Lucerne train station. Each panorama location is visualized as a flat hexagon lying on the ground. Hovering a hexagon highlights it in green, clicking it selects it and highlights it in yellow.

Click a hexagon to fly the camera into that panorama and reveal its imagery. The map then switches to a look-around mode: drag to change the viewing direction and scroll to adjust the field of view. The camera eye stays pinned to the panorama location. When you are inside a panorama, click the "Leave Panorama" button at the top of the map, or press Escape, to switch back to the 3D map.

In the sample code, you will find a controller and animations you can reuse and adapt in your own projects. PanoramaController keeps the camera eye pinned while you look around, and PanoramaViewer flies the camera into a panorama and cross-fades the imagery when you move from one panorama to another. The usage of the actual Panorama API can be found in viewer/PanoramaViewer.cpp and model/PanoramaLocationModelFactory.cpp.

The data in this sample is provided by Hexagon GeoCloud.

Data

The sample shows an overview of world-wide earthquakes from 2000 to 2011, as well as the tectonic plates of the planet. Both are GeoPackage files that are styled and filtered using properties from the files.

The dot size indicates the earthquake's magnitude : larger dots for stronger quakes.
The dot color indicates the earthquake's depth : quakes near the surface are red, deeper quakes are yellow to blue.
The color of the fault lines depends on the type of fault lines: light yellow lines indicate subduction fault lines, while light blue lines indicate non-subduction fault lines.

When the earthquakes layer is selected in the layer tree, two sliders can be used to apply filtering on the earthquake data. One is a time range filter, and the other filters based on the magnitude of the earthquakes. The filtering is done via the visibility expression on the IconsDrawCommand, by using parameter expressions.

The sample also show countries with a fill color that is derived from the population property of each country. Country borders are highlighted in black.

When the country layer is selected in the layer tree, one slider can be used to filter countries based on a population range. The filtering is done via the visibility of the GeometriesDrawCommand, by using parameter expressions.

Parameterized styling

With an IParameterizedFeaturePainter you can style your data using expressions that can be created with the StyleExpressionFactory. In this sample, this is demonstrated in both the EarthQuakePainter and the CountryPaintercode>. By using expressions, you can achieve similar visualization as a traditional IFeaturePainter but also make use of fast filtering and dynamic styling.

It has a map with bluemarble as background data.

There is a menu action which allows to open supported files.

It has a map with states, rivers and cities data:

• When a feature is selected, feature properties are listed in a panel.
• While pressing Alt and clicking on one or several features, a context menu allows the user to select which feature to select/unselect.
• While pressing Shift and dragging the mouse, a rectangle is drawn and selects/unselects all features under it. This feature is only available with a 2D map.

The sample starts up with a few tactical graphics and icons already initialized on a map. To create a new symbol, type its name in the toolbar widget, pick the desired symbol from the list and click on the map to start creation.

The sample also includes an MGRS grid, displaying labeled grid lines with increasing detail as the view zooms in. An overview label centered at the top of the map provides positional context with the currently visible MGRS grid zone and, if zoomed in enough, 100 km square.

• An Elevation layer visualized as 3D terrain and used for the line-of-sight coverage computation
• An Editing layer allowing to create and edit new observers
• A Line of Sight layer allowing to visualize the line-of-sight coverage data

The first button at the top left of the toolbar allows to create new observers. Existing observers can be selected, moved and resized, using the handles. Selected observers can be removed either by pressing the backspace or delete key, or by clicking the second button on the toolbar. Selected observers can be deselected by pressing the escape key. Added observers are positioned 10 meters above the terrain. In this sample, the line-of-sight coverage is limited to a radius of at most 60 kilometers.

It starts in normal mode, with airplanes flying between cities. The rendering of the dynamic data changes when you zoom in, including pin style labels.

Dynamic mode shows a heat map of the airplanes, made by applying density painting to icons. Static mode has density painting applied to lines between cities, with more trajectories between two cities resulting in brighter lines.

Use the video panel controls on the left to control playback, or press the space bar to pause and resume. Each video frame is projected onto the map using the corresponding flight data.

The map's camera follows the drone by default. You can toggle this behavior with the camera lock button at the top.

The background layer using MbTiles is based on map data from OpenStreetMap.

The Mapbox style file referenced within the 'Connect to MBTiles' license file is available at: https://sampledata.luciad.com/data/mbtiles/osm_styles/osm-bright/LICENSE.md.

The sample shows all military icons or tactical graphics for a specific symbology, with random modifier values. Icons and tactical graphics are labeled as prescribed by the military symbol standards.

Use the menu to switch between icons and tactical graphics or to change the symbology.

The First Person Camera Controller allows the control of the camera and modify its position using a predefined keymap to move and the mouse to change the camera's yaw and pitch.

The Orbit camera consists of a camera orbiting around a cube, keeping that point of interest in the center of the view. This controller uses the Map.IRendererCallback API to modify the camera on each repaint of the Map.

In the sample you will see various shapes and lines that are stroked using the Complex Stroke API, grouped into themes. You can see how the shape is styled in the sample code.

You can select an object to start editing it. Notice how the patterns dynamically follow the shape while editing.

The Cookbook Theme is intended for developers. You can experiment with complex stroke line styles by changing sample snippets, or by creating new complex stroke styles and visualizing the results. You can also edit shapes to check how the complex stroke line style is drawn over the vertices of a shape.

There is a toolbar that allows you to:

• Open supported files
• Connect to a web service (WMS, WMTS, WFS, OGC 3D tiles, HSPC, HERE Maps, and MBTiles)
• Add a basic vector model showing several supported geometries using default styling.
• Add a layer with dynamic data. The rendering of the dynamic data changes when you zoom in.

There is a layer control allowing you to change the visibility of layers and to re-order them.

Selecting a feature lists its properties in a panel below the layer control. Clicking a WMS or WMTS layer sends a GetFeatureInfo request, and the properties of the returned feature appear in the same panel.

The Mapbox style file referenced within the 'Connect to MBTiles' license file is available at: https://sampledata.luciad.com/data/mbtiles/osm_styles/osm-bright/LICENSE.md. The default MBTiles dataset of Belgium is provided by OpenStreetMap.

Instructions

Creating features

Features can be added to the map using the button in the toolbar.

Polylines, polyline rings and bezier curves can be created using a click mode. Polylines and polyline rings can also be created with a free hand mode. In click mode, use double-click or touch long press to end creation. For bezier curves the creation ends when the last point is placed. In free hand mode, the feature is finalized as soon as the drag gesture ends.

Editing features

Click or touch a feature to select it and show its edit handles. Drag the edit handles around to change the geometry.

Points can be added at the beginning or the end of a polyline using the Shift modifier while clicking with the left mouse button.

Points can be removed from a polyline or polyline ring using Ctrl-click or touch long press.

Tutorial layers

• Tutorial 1: the tutorial on how to customize an existing handles provider
• Tutorial 2: the tutorial on how to add extra handles to an existing handles provider
• Tutorial 3: the tutorial on how to create a custom handles provider

It has a map with roads data:

• The type of roads that are loaded are configured per map scale.
• The styling of the data depends on their type and on the map scale.

It has a map with following data:

• Bluemarble raster background
• Rivers in Switzerland
• Elevation data for Switzerland

Features

Dataset

This is a Gaussian splatting dataset of the Museum of Zoology, maintained by the Catholic University of Leuven. The museum houses a collection of 5000 animals and skeletons, among which the skeleton of a bowhead whale (Balaena mysticetus) hanging from the ceiling. It was captured with permission of the university.

To load your own Gaussian splatting dataset in LuciadCPillar, see the Data Formats sample > Connect to service > OGC 3D Tiles.

Navigation

• Use the arrow keys or W/A/S/D to move horizontally, and Q/E to move down and up.
• Drag with the right mouse button to turn the camera.
• Hold Shift to move faster, or Space to move slower.
• On a touch screen, one finger turns the camera in place, two fingers pan, and pinching zooms.
• Select a point of interest in the Locations panel to fly towards it.

3D Data

Use Ogc3DTilesModelDecoder to create an ITileSet3DModel and use TileSet3DLayer to create a layer for it. Pass a GaussianSplatsStyle to the layer builder to decide how the splats are painted. This works for any OGC 3D Tiles tile set that contains SPZ, or glTF with SPZ payloads.

Gaussian splatting data is often not georeferenced: the model then has a Cartesian reference and carries no information about where on Earth it belongs. This sample recognizes that case and hands the model a GeoLocation, which places it at a chosen location on the globe.

Gaussian Splat Settings

The Quality preset in the Options panel of the side bar, from Low to Ultra, balances visual fidelity against rendering performance. Each preset combines a ResolutionScale, an OpacityCutoff and a HighPrecisionColors setting on the GaussianSplatsStyle of the splat layer, together with a quality factor on the layer itself, which decides how much detail the tile set loads.

The style keeps EnableDepth on, so the splats are taken into account when querying the depth at a pixel and they can occlude other data such as meshes, point clouds and features. Querying the depth is also what lets the navigation act on the splats themselves.

It has a map with states, rivers and cities data. Labels are decluttered to prevent label overlap and to avoid overlap with the view bounds.

Cities are filtered based on their population and become visible when you zoom in. The city labels contain more information when a city is selected and the used font size is derived from the population of the city. When a city's label can not be placed next to the city, a line (called pin) is drawn from the city location to its label. City labels are configured with a priority such that the labels of larger cities are shown in favor of labels of smaller cities when there is no room to display all labels.

Rivers only appear when the map is zoomed in enough and their labels are oriented based the on the river's direction.

States have labels which are positioned inside the state area. The state labels have lower priorities than city labels.

Features

3D Data

Use Ogc3DTilesModelDecoder to create an ITileSet3DModel and use TileSet3DLayer to create a layer for it. You can load 3D tileset data on 2D and 3D maps.

Graphics Effects

The Effects Settings tool shows the graphics effects that can be applied on a 3D scene:

• Eye-dome lighting (Depth Perception).
• Ambient occlusion (Ambient Light).

Expression based styling

TileSet3DLayer allows to set a PointCloudStyle that defines the expression based styles for the point cloud data. This is demonstrated for the LIDAR layer that contains railways station point cloud data. There are three types of expressions:

• The colorExpression property defines colors for point. By default colors are defined in the tile data. If no color is defined, LuciadCPillar paints them using a gray color. You can use StyleExpressionFactory to define an expression that evaluates to a color value, e.g. based on attributes in the data. This sample shows how you can create a color expression based on the height of the points or on their intensity.
• The visibilityExpression property is a filter that determines point cloud data visibility. You can use StyleExpressionFactory to define an expression that evaluates to a boolean value. This sample shows how to filter points based on their height.
• Point size expressions can be configured on the PointCloudStyle builder. You can use StyleExpressionFactory to define an expression that evaluates to a double value, that is interpreted as pixels or meters. This sample adds a slider that can be used to choose a point size.

Data

The Marseille 3D mesh data used in this sample was created by Airbus with Airbus Street Factory. The train station lidar data was created by Flying-Cam for Altametris and SNCF Réseau. Both datasets are available as OGC 3D Tiles services, hosted by our LuciadFusion server on https://sampleservices.luciad.com/. You can use these services only for simple tests and demonstrations. You should not rely on either of them in any way.

The map shows the Lucerne city mesh and a set of panorama locations along a track near the Lucerne train station. Each panorama location is visualized as a flat hexagon lying on the ground. Hovering a hexagon highlights it in green, clicking it selects it and highlights it in yellow.

Click a hexagon to fly the camera into that panorama and reveal its imagery. The map then switches to a look-around mode: drag to change the viewing direction and scroll to adjust the field of view. The camera eye stays pinned to the panorama location. When you are inside a panorama, click the "Leave Panorama" button at the top of the map to switch back to the 3D map.

In the sample code, you will find a controller and animations you can reuse and adapt in your own projects. PanoramaController keeps the camera eye pinned while you look around, and PanoramaViewer flies the camera into a panorama and cross-fades the imagery when you move from one panorama to another. The usage of the actual Panorama API can be found in Viewer/PanoramaViewer.cs and Model/PanoramaLocationModelFactory.cs.

The data in this sample is provided by Hexagon GeoCloud.

Data

The sample shows an overview of world-wide earthquakes from 2000 to 2011, as well as the tectonic plates of the planet. Both are GeoPackage files that are styled and filtered using properties from the files.

The dot size indicates the earthquake's magnitude : larger dots for stronger quakes.
The dot color indicates the earthquake's depth : quakes near the surface are red, deeper quakes are yellow to blue.
The color of the fault lines depends on the type of fault lines: light yellow lines indicate subduction fault lines, while light blue lines indicate non-subduction fault lines.

When the earthquakes layer is selected in the layer tree, two sliders can be used to apply filtering on the earthquake data. One is a time range filter, and the other filters based on the magnitude of the earthquakes. The filtering is done via the visibility expression on the IconsDrawCommand, by using parameter expressions.

The sample also show countries with a fill color that is derived from the population property of each country. Country borders are highlighted in black.

When the country layer is selected in the layer tree, one slider can be used to filter countries based on a population range. The filtering is done via the visibility of the GeometriesDrawCommand, by using parameter expressions.

Parameterized styling

With an IParameterizedFeaturePainter you can style your data using expressions that can be created with the StyleExpressionFactory. In this sample, this is demonstrated in both the EarthQuakePainter and the CountryPaintercode>. By using expressions, you can achieve similar visualization as a traditional IFeaturePainter but also make use of fast filtering and dynamic styling.

It has a map with states, rivers and cities data:

• When a feature is selected, feature properties are listed in a panel.
• While pressing Alt and clicking on one or several features, a context menu allows the user to select which feature to select/unselect.
• While pressing Shift and dragging the mouse, a rectangle is drawn and selects/unselects all features under it. This feature is only available with a 2D map.

The sample starts up with a few tactical graphics and icons already initialized on a map. To create a new symbol, type its name in the toolbar widget, pick the desired symbol from the list and click on the map to start creation.

The sample also includes an MGRS grid, displaying labeled grid lines with increasing detail as the view zooms in. An overview label in the top-right corner of the window provides positional context with the currently visible MGRS grid zone and, if zoomed in enough, 100 km square.

• An Elevation layer visualized as 3D terrain and used for the line-of-sight coverage computation
• An Editing layer allowing to create and edit new observers
• A Line of Sight layer allowing to visualize the line-of-sight coverage data

The first button at the top left of the toolbar allows to create new observers. Existing observers can be selected, moved and resized, using the handles. Selected observers can be removed either by pressing the backspace or delete key, or by clicking the second button on the toolbar. Selected observers can be deselected by pressing the escape key. Added observers are positioned 10 meters above the terrain. In this sample, the line-of-sight coverage is limited to a radius of at most 60 kilometers.

It starts in normal mode, with airplanes flying between cities. The rendering of the dynamic data changes when you zoom in, including pin style labels.

Dynamic mode shows a heat map of the airplanes, made by applying density painting to icons. Static mode has density painting applied to lines between cities, with more trajectories between two cities resulting in brighter lines.

Click the video preview in the lower-left corner, or press the space bar, to pause or resume playback. Each video frame is projected onto the map using the corresponding flight data.

The map's camera follows the drone by default. You can toggle this behavior with the 'Lock camera' switch at the top of the map.

The background layer using MbTiles is based on map data from OpenStreetMap.

The Mapbox style file referenced within the 'Connect to MBTiles' license file is available at: https://sampledata.luciad.com/data/mbtiles/osm_styles/osm-bright/LICENSE.md.

It has a map with bluemarble as background data.

There is a menu action which allows to add some geometries.

It has a map with a bluemarble background.

It has a map with a bluemarble background.

There is a menu action which allows to open supported files.

Use the toggle button on the map to switch between the Orbit camera controller and the default controller.

The Orbit camera consists of a camera orbiting around a cube, keeping that point of interest in the center of the view. This controller uses the Map.IRendererCallback API to modify the camera on each repaint of the Map.

For example, you could draw a line with a sawtooth pattern and decorate it with arrows at the start and the end of the line.

In the sample you will see various shapes and lines that are stroked using the Complex Stroke API, grouped into themes. You can see how the shape is styled in the sample code.

You can select an object to start editing it. Notice how the patterns dynamically follow the shape while editing.

The Cookbook Theme is intended for developers. You can experiment with complex stroke line styles by changing sample snippets, or by creating new complex stroke styles and visualizing the results. You can also edit shapes to check how the complex stroke line style is drawn over the vertices of a shape.

You can open files from the device, connect to web services, or add a vector model with default styling.

It starts with a map that has a Blue Marble background layer. There are buttons that allow you to:

• Open supported files stored on the mobile device's SD card
• Connect to a web service (WMS, WMTS, WFS, OGC 3D tiles, HSPC, HERE Maps, MBTiles, and LTS)
• Add a basic vector model showing several supported geometries using default styling.

There is a layer control allowing you to change the visibility of layers and to re-order them.

The Mapbox style file referenced within the 'Connect to MBTiles' license file is available at: https://sampledata.luciad.com/data/mbtiles/osm_styles/osm-bright/LICENSE.md. The default MBTiles dataset of Belgium is provided by OpenStreetMap.

You can create polylines, polyline rings and bezier curves, then select a feature to reshape or delete it with its edit handles.

Instructions

Creating features

Features can be added to the map using the buttons.

Polylines, polyline rings and bezier curves can be created using a click mode. Polylines and polyline rings can also be created with a free hand mode. In tap mode, use double-tap or touch long press to end creation. For bezier curves the creation ends when the last point is placed. In free hand mode, the feature is finalized as soon as the drag gesture ends.

Editing features

Touch a feature to select it and show its edit handles. Drag the edit handles around to change the geometry. Points can be removed from a polyline or polyline ring using long press.

Tutorial layers

• Tutorial 1: the tutorial on how to customize an existing handles provider
• Tutorial 2: the tutorial on how to add extra handles to an existing handles provider
• Tutorial 3: the tutorial on how to create a custom handles provider

It has a map with roads data:

• The type of roads that are loaded are configured per map scale.
• The styling of the data depends on their type, selected state and on the map scale.

Features

Dataset

This is a Gaussian splatting dataset of the Museum of Zoology, maintained by the Catholic University of Leuven. The museum houses a collection of 5000 animals and skeletons, among which the skeleton of a bowhead whale (Balaena mysticetus) hanging from the ceiling. It was captured with permission of the university.

To load your own Gaussian splatting dataset in LuciadCPillar, see the Data Formats sample > Connect to service > OGC 3D Tiles.

Navigation

• Drag with one finger to turn the camera.
• Drag with two fingers to move the camera.
• Pinch two fingers to zoom.
• Double tap to move towards a point.
• Use the thumbstick at the bottom left to fly through the museum, and the arrow buttons next to it to go up and down.
• Select a point of interest in the Locations panel to fly towards it.

3D Data

Use Ogc3DTilesModelDecoder to create an ITileSet3DModel and use TileSet3DLayer to create a layer for it. Pass a GaussianSplatsStyle to the layer builder to decide how the splats are painted. This works for any OGC 3D Tiles tile set that contains SPZ, or glTF with SPZ payloads.

Gaussian splatting data is often not georeferenced: the model then has a Cartesian reference and carries no information about where on Earth it belongs. This sample recognizes that case and hands the model a GeoLocation, which places it at a chosen location on the globe.

Gaussian Splat Settings

The Quality presets, from Low to Ultra, balance visual fidelity against rendering performance. Each preset combines a resolutionScale, an opacityCutoff and a highPrecisionColors setting on the GaussianSplatsStyle of the splat layer, together with a quality factor on the layer itself, which decides how much detail the tile set loads.

The style keeps enableDepth on, so the splats are taken into account when querying the depth at a pixel and they can occlude other data such as meshes, point clouds and features. Querying the depth is also what lets the navigation act on the splats themselves.

Labels are decluttered to prevent label overlap and to avoid overlap with the view bounds.

Cities are filtered based on their population and become visible when you zoom in. The city labels contain more information when a city is selected and the used font size is derived from the population of the city. When a city's label can not be placed next to the city, a line (called pin) is drawn from the city location to its label. City labels are configured with a priority such that the labels of larger cities are shown in favor of labels of smaller cities when there is no room to display all labels.

Rivers only appear when the map is zoomed in enough and their labels are oriented based the on the river's direction.

States have labels which are positioned inside the state area. The state labels have lower priorities than city labels.

Features

3D Data

Use Ogc3DTilesModelDecoder to create an ITileSet3DModel and use TileSet3DLayer to create a layer for it. You can load 3D tileset data on 2D and 3D maps.

Graphics Effects

The Effects Settings (button with paint brush icon) shows the graphics effects that can be applied on a 3D scene:

• Eye-dome lighting (Depth Perception).
• Ambient occlusion (Ambient Light).

Expression based styling

TileSet3DLayer allows to set a PointCloudStyle that defines the expression based styles for the point cloud data. This is demonstrated for the LIDAR layer that contains railways station point cloud data. The style settings can be accessed via the button with the gear icon at the bottom of the screen. There are three types of expressions:

• The colorExpression property defines colors for points. By default colors are defined in the tile data. If no color is defined, LuciadCPillar paints them using a gray color. You can use StyleExpressionFactory to define an expression that evaluates to a color value, e.g. based on attributes in the data. This sample shows how you can create a color expression based on the height of the points or on their intensity.
• The visibilityExpression property is a filter that determines point cloud data visibility. You can use StyleExpressionFactory to define an expression that evaluates to a boolean value. This sample shows how to filter points based on their height.
• Point size expressions can be configured on the PointCloudStyle builder. You can use StyleExpressionFactory to define an expression that evaluates to a double value that is interpreted as pixels or meters. This sample adds a slider that can be used to choose a point size.

Data

The Marseille 3D mesh data used in this sample was created by Airbus with Airbus Street Factory. The train station lidar data was created by Flying-Cam for Altametris and SNCF Réseau.

Both datasets are available as OGC 3D Tiles services, hosted by our LuciadFusion server on https://sampleservices.luciad.com/. You can use these services only for simple tests and demonstrations. You should not rely on either of them in any way.

The map shows the Lucerne city mesh and a set of panorama locations along a track near the Lucerne train station. Each panorama location is visualized as a flat hexagon lying on the ground. The selected panorama is highlighted in yellow.

Tap a hexagon to fly the camera into that panorama and reveal its imagery. The map then switches to a look-around mode: drag to change the viewing direction and pinch to adjust the field of view. The camera eye stays pinned to the panorama location. When you are inside a panorama, tap the "Leave Panorama" button at the top of the map to switch back to the 3D map.

In the sample code, you will find a controller and animations you can reuse and adapt in your own projects. PanoramaController keeps the camera eye pinned while you look around, and PanoramaViewer flies the camera into a panorama and cross-fades the imagery when you move from one panorama to another. The usage of the actual Panorama API can be found in PanoramaViewer.kt and PanoramaModelFactory.kt.

The data in this sample is provided by Hexagon GeoCloud.

Data

The sample shows an overview of world-wide earthquakes from 2000 to 2011, as well as the tectonic plates of the planet. Both are GeoPackage files that are styled and filtered using properties from the files.

The dot size indicates the earthquake's magnitude : larger dots for stronger quakes.
The dot color indicates the earthquake's depth : quakes near the surface are red, deeper quakes are yellow to blue.
The color of the fault lines depends on the type of fault lines: light yellow lines indicate subduction fault lines, while light blue lines indicate non-subduction fault lines.

When the earthquakes layer is selected in the layer tree, two sliders can be used to apply filtering on the earthquake data. One is a time range filter, and the other filters based on the magnitude of the earthquakes. The filtering is done via the visibility expression on the IconsDrawCommand, by using parameter expressions.

The sample also show countries with a fill color that is derived from the population property of each country. Country borders are highlighted in black.

When the country layer is selected in the layer tree, one slider can be used to filter countries based on a population range. The filtering is done via the visibility of the GeometriesDrawCommand, by using parameter expressions.

Parameterized styling

With an IParameterizedFeaturePainter you can style your data using expressions that can be created with the StyleExpressionFactory. In this sample, this is demonstrated in both the EarthQuakePainter and the CountryPaintercode>. By using expressions, you can achieve similar visualization as a traditional IFeaturePainter but also make use of fast filtering and dynamic styling.

The sample starts up with a few tactical graphics and icons already initialized on a map. Different symbology standards can be selected using the theme button on the top right of the screen.

To create new symbols, tap the add (+) button. You can search for the desired symbol or pick a symbol from the recently used list.

To edit a symbol you must first select it. You can then change the military symbol's geometry by manipulating the handles on the map. If you want to change other symbol properties, tap on the edit button at the bottom of the screen. You can delete the selected symbol by tapping on the trashcan icon.

The sample also includes an MGRS grid, displaying labeled grid lines with increasing detail as the view zooms in. An overview label centered at the top of the map provides positional context with the currently visible MGRS grid zone and, if zoomed in enough, 100 km square.

• An Elevation layer visualized as 3D terrain and used for the line-of-sight coverage computation
• An Editing layer allowing to create and edit new observers
• A Line of Sight layer allowing to visualize the line-of-sight coverage data

Buttons at the bottom allow the creation of new observers and deletion of selected observers. Existing observer can be selected, moved and resized, using the point handles. Added observers are positioned 10 meters above the terrain. In this sample, the line-of-sight coverage is limited to a radius of at most 60 kilometers.

It starts in normal mode, with airplanes flying between cities. The rendering of the dynamic data changes when you zoom in, including pin style labels.

Dynamic mode shows a heat map of the airplanes, made by applying density painting to icons. Static mode has density painting applied to lines between cities, with more trajectories between two cities resulting in brighter lines.

Use the video panel controls on the left to control playback. Each video frame is projected onto the map using the corresponding flight data.

The map's camera follows the drone by default. You can toggle this behavior with the camera lock button at the top.

The background layer using MbTiles is based on map data from OpenStreetMap.

The Mapbox style file referenced within the 'Connect to MBTiles' license file is available at: https://sampledata.luciad.com/data/mbtiles/osm_styles/osm-bright/LICENSE.md.