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Environment Light

Environment light is defined as the contribution of sky and sun. Sky settings are direction independent and are akin to AmbientLight. Sun is direction-dependent.

Configuration​

To configure the settings, you may pass your own environment light configuration to strahl.

strahlConfiguration.js
runPathTracer(target, model, {
  environmentLightConfiguration: {
    sky: {
      power: 0.5,
      color: [0.8, 0.8, 1.0],
    },
    sun: {
      power: 1.0,
      angularSize: 35,
      latitude: 40,
      longitude: 160,
      color: [1.0, 1.0, 0.9],
    },
  },
});

Sun Configuration​

Use angularSize to determine the size of the sun, latitude and longitude to change the position and therefore direction of light, color for different effects, and power for the intensity.

Sky Configuration​

Use power for intensity of ambient light and color for different effects.