12.4. Creating 3D Symbols¶
The Style Manager helps you create and store 3D symbols for every geometry type to render in the 3D map view.
You can define different simple 3D shapes like Sphere, Cylinder, Cube, Cone, Plane and Torus defined by their Radius, Size or Length. The unit of size of the 3D shapes refers to the CRS of the project.
The shading of the 3D shapes can be defined by the menus Diffuse, Ambient, Specular and Shininess (see https://en.wikipedia.org/wiki/Phong_reflection_model#Description)
If you choose 3D Model, the location will be determined by a simple point coordinate.
For visualizing 3D point clouds you can use Billboard Shapes defined by the Billboard Height, Billboard symbol and Altitude clamping. The symbol will have a stable size.
Altitude clamping can be set to Absolute, Relative or Terrain. The Absolute setting can be used when height values of the 3d vectors are provided as absolute measures from 0. Relative and Terrain add given elevation values to the underlying terrain elevation.
Translation can be used to move objects in x, y and z axis.
You can define a Scale factor for the 3D shape as well as a Rotation around the x-, y- and z-axis.
Beneath the Width and Height settings you can define the Extrusion of the vector lines. If the lines do not have z-values, you can define the 3d volumes with this setting.
With the Altitude clamping you define the position of the 3D lines relative to the underlying terrain surface, if you have included raster elevation data or other 3D vectors.
The Altitude binding defines how the feature is clamped to the terrain. Either every Vertex of the feature will be clamped to the terrain or this will be done by the Centroid.
The shading can be defined in the menus Diffuse, Ambient, Specular and Shininess.
The Altitude clamping, Altitude binding can be defined as explained above.
To go through the settings explained above you can have a look at https://public.cloudmergin.com/projects/saber/luxembourg/tree.