threejs-impl-lighting

To set up realistic lighting in Three.js r160+, add light sources like DirectionalLight to your scene and apply physical intensity units to ensure correct illumination measurements. You must configure seven main light types according to best practices for accurate visual results.

The seven light types in Three.js are Ambient, Hemisphere, Directional, Point, Spot, RectArea, and LightProbe. Each serves different scene illumination purposes and requires specific setup parameters to function properly.

You need environment mapping for PBR materials in Three.js when you want to apply image-based lighting to your scene. This technique provides realistic reflections and ambient lighting that enhances 3D visual quality without compromising performance.

To visualize lighting placement in a Three.js scene, utilize Light helpers. These components provide on-screen guides that show the position, direction, and range of your light sources for easier debugging and adjustment.

Your Three.js scene looks too dark after updating to r160 because light intensity measurements changed to use physical units. You must recalculate intensity values for your light sources to match the new physical lighting standard for correct exposure.

You can optimize Three.js lighting performance by following specific performance considerations provided for various environments. These guidelines help maintain high 3D scene visual quality while reducing the computational overhead of multiple light sources.