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PointLight

embedded_3dgfx::lights

Struct PointLight 

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pub struct PointLight {
    pub position: Point3<f32>,
    pub color: Rgb565,
    pub radius: f32,
    pub intensity: f32,
}
Expand description

A dynamic point light in world space.

Attenuation uses a squared-distance falloff that avoids a sqrt call: factor = (1 − d²/r²) × intensity giving a smooth curve from full brightness at the source to zero at radius.

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§position: Point3<f32>

World-space position of the light source.

§color: Rgb565

Light colour. Channels are scaled by intensity at sample time.

§radius: f32

Influence radius in world units. Surfaces at or beyond this distance receive no contribution.

§intensity: f32

Brightness multiplier. 1.0 = full colour at the source centre.

Implementations§

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impl PointLight

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pub fn new(position: Point3<f32>, color: Rgb565, radius: f32) -> Self

Construct a new point light with intensity = 1.0.

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pub fn with_intensity(self, intensity: f32) -> Self

Builder-style intensity override.

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pub fn contribution_at(&self, world_pos: Point3<f32>) -> Rgb565

Compute the additive RGB565 contribution of this light at world_pos.

Returns Rgb565::new(0, 0, 0) when world_pos is outside the influence radius.

Trait Implementations§

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impl Clone for PointLight

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fn clone(&self) -> PointLight

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for PointLight

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impl Debug for PointLight

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<T> Any for T
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🔬This is a nightly-only experimental API. (clone_to_uninit)
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