Struct PointLight 

pub struct PointLight {
    pub intensity: f32,
    pub color: Srgba,
    pub position: Vec3,
    pub attenuation: Attenuation,
}

A light which shines from the given position in all directions.

Fields

intensity: f32

The intensity of the light. This allows for higher intensity than 1 which can be used to simulate high intensity light sources like the sun.

color: Srgba

The base color of the light.

position: Vec3

The position of the light.

attenuation: Attenuation

The Attenuation of the light.

Implementations

impl PointLight

pub fn new( _context: &Context, intensity: f32, color: Srgba, position: Vec3, attenuation: Attenuation, ) -> PointLight

Constructs a new point light.

Trait Implementations

impl Light for PointLight

fn shader_source(&self, i: u32) -> String

The fragment shader source for calculating this lights contribution to the color in a fragment. It should contain a function with this signature vec3 calculate_lighting{}(vec3 surface_color, vec3 position, vec3 normal, vec3 view_direction, float metallic, float roughness, float occlusion) Where {} is replaced with the number i given as input. This function should return the color contribution for this light on the surface with the given surface parameters.

fn use_uniforms(&self, program: &Program, i: u32)

Should bind the uniforms that is needed for calculating this lights contribution to the color in Light::shader_source.

fn id(&self) -> LightId

Returns a unique ID for each variation of the shader source returned from Light::shader_source.