Interface HSPCTilesModelDescriptor

Indicates whether the dataset contains normal vectors. If true, the point cloud can be displayed using normal orientation. see Orienting points for more details.

Since

2024.0

An optional set of properties.

For HSPC versions 8 and up, these properties can be used for expression-based styling.

Entries for which the role is known will exhibit the "role" property. Currently exposed roles are :

• "color" : color [vec4]
• "normal" : Normal vector (facing direction of points) [vec3]
• "intensity" : intensity [number]
• "classification" : classification [number]
• "custom" : can be anything. If 3 custom values have "normal" in their property name, or if the property names are "Nx", "Ny" or "Nz", they will be identified as a normal vector.

When available, the data type will also be listed. Possible types are :

• "float32" : A 32-bit float
• "float64" : a 64-bit double
• "int32" : a 32-bit signed int
• "int16" : a 16-bit signed int
• "int8" : a 8-bit signed char
• "uint32" : a 32-bit unsigned int
• "uint16" : a 16-bit unsigned int
• "uint8" : a 8-bit unsigned char

These will give a hint about the possible range of values for a given attribute. For instance, uint8 data will only be in range 0-255, helping in designing an effective styling range.

Example of what a descriptor can look like:

"properties" : {
  "colorRGB" : {
    "role" : "color"
  },
  "I" : {
    "role" : "intensity",
    "type" : "float32"
  },
  "C" : {
    "role" : "classification",
    "type" : "uint8"
  }
}
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An optional property containing version information.