v0.3.2: Control viewer rendering

The Viewer class now accepts a new parameter renderMode, which lets you control when the viewer renders. It is of the type RenderMode:

const RenderMode = {
    Always: 0,
    OnChange: 1,
    Never: 2
};

• Always is the default and will cause the viewer to render every frame.
• OnChange will make the viewer only render when a visual element in the scene changes (camera position, camera orientation etc.)
• Never prevents the viewer from doing any rendering

Additionally the new function Viewer.setRenderMode() allows this setting to be changed at runtime