pub struct SpotLightCalculation {Show 13 fields
pub light_position: Vec3,
pub frag_position: Vec3,
pub frag_to_light: Vec3,
pub frag_to_light_distance: f32,
pub light_direction: Vec3,
pub cos_inner_cutoff: f32,
pub cos_outer_cutoff: f32,
pub fragment_is_inside_inner_cone: bool,
pub fragment_is_inside_outer_cone: bool,
pub epsilon: f32,
pub cos_theta: f32,
pub contribution_unclamped: f32,
pub contribution: f32,
}Expand description
Contains values needed to determine the outgoing radiance of a fragment.
For more info, see the Spotlight section of the learnopengl article.
Fields§
§light_position: Vec3Position of the light in world space
frag_position: Vec3Position of the fragment in world space
frag_to_light: Vec3Unit vector (LightDir) pointing from the fragment to the light
frag_to_light_distance: f32Distance from the fragment to the light
light_direction: Vec3Unit vector (SpotDir) direction that the light is pointing in
cos_inner_cutoff: f32The cosine of the cutoff angle (Phi ϕ) that specifies the spotlight’s radius.
Everything inside this angle is lit by the spotlight.
cos_outer_cutoff: f32The cosine of the cutoff angle (Gamma γ) that specifies the spotlight’s outer radius.
Everything outside this angle is not lit by the spotlight.
Fragments between inner_cutoff and outer_cutoff have an intensity
between 1.0 and 0.0.
fragment_is_inside_inner_cone: boolWhether the fragment is inside the inner_cutoff cone.
fragment_is_inside_outer_cone: boolWhether the fragment is inside the outer_cutoff cone.
epsilon: f32outer_cutoff - inner_cutoff
cos_theta: f32Cosine of the angle (Theta θ) between frag_to_light (LightDir) vector and the
light_direction (SpotDir) vector.
θ should be smaller than outer_cutoff (Gamma γ) to be
inside the spotlight, but since these are all cosines of angles, we actually
compare using >.
contribution_unclamped: f32§contribution: f32The intensity level between 0.0 and 1.0 that should be used to determine
outgoing radiance.
Implementations§
Source§impl SpotLightCalculation
impl SpotLightCalculation
Sourcepub fn new(
spot_light_descriptor: SpotLightDescriptor,
node_transform: Mat4,
fragment_world_position: Vec3,
) -> Self
pub fn new( spot_light_descriptor: SpotLightDescriptor, node_transform: Mat4, fragment_world_position: Vec3, ) -> Self
Calculate the values required to determine outgoing radiance of a spot light.
Trait Implementations§
Source§impl Clone for SpotLightCalculation
impl Clone for SpotLightCalculation
Source§fn clone(&self) -> SpotLightCalculation
fn clone(&self) -> SpotLightCalculation
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl Debug for SpotLightCalculation
impl Debug for SpotLightCalculation
Source§impl Default for SpotLightCalculation
impl Default for SpotLightCalculation
Source§fn default() -> SpotLightCalculation
fn default() -> SpotLightCalculation
impl Copy for SpotLightCalculation
Auto Trait Implementations§
impl Freeze for SpotLightCalculation
impl RefUnwindSafe for SpotLightCalculation
impl Send for SpotLightCalculation
impl Sync for SpotLightCalculation
impl Unpin for SpotLightCalculation
impl UnwindSafe for SpotLightCalculation
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