Surface

A surface made up of triangles.

Attribute Locations

• Vertices puts attribute values on the vertices.

• Primitives puts attribute values on the triangles.

Fields

origin: 3D vector

Origin of the surface relative to the project coordinate reference system.

triangles: Array

Array with Triangle type storing each triangle as a triple of indices into vertices. Triangle winding should be counter-clockwise around an outward-pointing normal.

vertices: Array

Array with Vertex type storing the vertex locations.

Add origin and the project origin to get the locations relative to the project coordinate reference system.

Schema

{
  "type": "object",
  "required": [
    "triangles",
    "type",
    "vertices"
  ],
  "properties": {
    "origin": {
      "type": "array",
      "items": {
        "type": "number",
        "format": "double"
      },
      "maxItems": 3,
      "minItems": 3
    },
    "triangles": {
      "$ref": "#/definitions/Array"
    },
    "type": {
      "type": "string",
      "enum": [
        "Surface"
      ]
    },
    "vertices": {
      "$ref": "#/definitions/Array"
    }
  }
}