A Position is a spatial location within a Viewer.

Overview

A Position provides its coordinates in each of BIMSurfer's five coordinate systems:

• pos - 3D coordinates within the Position's local Model coordinate system.
• worldPos - 3D coordinates within the Viewer's current World coordinate system, after transformation by the Position's modelling matrix.
• viewPos - 3D coordinates within the Viewer's current View coordinate system, after transformation by the Viewer's view matrix.
• projPos - 3D coordinates within the Viewer's current Projection coordinate system, after transformation by the Viewer's projection matrix.
• canvasPos - 2D coordinates within the Viewer's current Canvas coordinate system.

Example

// Create a Viewer
var viewer = new BIMSURFER.Viewer({ element: "myDiv" });

// Create a Camera
var camera = new BIMSURFER.Camera(viewer, {
    eye: [20, 20, -20]
});

// Create a CameraControl to interact with the Camera
var cameraControl = new BIMSURFER.CameraControl(viewer, {
   camera: camera
});

// Create a Position
new BIMSURFER.Position(viewer, {
   pos: [0,0,0],
   matrix: BIMSURFER.math.translationMat4v([4, 0,0])
});