hal8174/ray-tracing2
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fix iridescent material

Browse source
This commit is contained in:
hal8174 2025-05-26 20:52:47 +02:00
parent 543bf7e1bf
commit b1351747b7
Signed by: hal8174
SSH key fingerprint: SHA256:JwuqS+eVfISfKr+DkDQ6NWAbGd1jFAHkPpCM1yCnlTs
2 changed files with 45 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

18
ray-tracing-material/src/iridescent.rs
View file

@ -22,26 +22,24 @@ impl Iridescent {
}
}
fn fresnel_reflection(&self, theta1: f32, theta2: f32, s_polaized: bool) -> f32 {
fn fresnel_reflection(n1: f32, n2: f32, theta1: f32, theta2: f32, s_polaized: bool) -> f32 {
if s_polaized {
(self.n1 * theta1.cos() - self.n2 * theta2.cos())
/ (self.n1 * theta1.cos() + self.n2 * theta2.cos())
(n1 * theta1.cos() - n2 * theta2.cos()) / (n1 * theta1.cos() + n2 * theta2.cos())
} else {
(self.n2 * theta1.cos() - self.n1 * theta2.cos())
/ (self.n2 * theta1.cos() + self.n1 * theta2.cos())
(n2 * theta1.cos() - n1 * theta2.cos()) / (n2 * theta1.cos() + n1 * theta2.cos())
}
}
fn abs_r_1_squared(&self, l: f32, theta1: f32, theta2: f32, s_polaized: bool) -> f32 {
let r12 = self.fresnel_reflection(theta1, theta2, s_polaized);
let r12 = Self::fresnel_reflection(self.n1, self.n2, theta1, theta2, s_polaized);
let phi = 2.0 * f32::consts::PI * self.n2 * self.d2 * theta2.cos() / l;
let num_real = r12 * (1.0 - f32::cos(-2.0 * phi));
let num_imag = r12 * (1.0 - f32::sin(-2.0 * phi));
let num_imag = r12 * (-1.0 * f32::sin(-2.0 * phi));
let denom_real = 1.0 - r12 * r12 * f32::cos(-2.0 * phi);
let denom_imag = 1.0 - r12 * r12 * f32::sin(-2.0 * phi);
let denom_imag = 0.0 - r12 * r12 * f32::sin(-2.0 * phi);
let real = (num_real * denom_real + num_imag * denom_imag)
/ (denom_real * denom_real + denom_imag * denom_imag);
@ -59,10 +57,10 @@ impl Iridescent {
real * real + imag * imag
}
fn abs_C_squared(&self, l: f32, theta1: f32, theta2: f32, s_polaized: bool) -> f32 {
pub fn abs_C_squared(&self, l: f32, theta1: f32, theta2: f32, s_polaized: bool) -> f32 {
let local_abs_r_1_squared = self.abs_r_1_squared(l, theta1, theta2, s_polaized);
local_abs_r_1_squared / (local_abs_r_1_squared + 1.0)
local_abs_r_1_squared / (1.0 - local_abs_r_1_squared)
}
fn cos_K_Delta(&self, l: f32, theta1: f32, theta2: f32, s_polaized: bool) -> f32 {