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prior normal check for lights

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This commit is contained in:
zomseffen 2025-03-07 11:34:33 +01:00
parent f3098d8061
commit e3829a73e4
4 changed files with 80 additions and 8 deletions

67
src/scene/empty_volume.rs
View file

@ -1,4 +1,4 @@
use cgmath::{ElementWise, Vector3};
use cgmath::{ElementWise, InnerSpace, Vector3};
use std::cell::{RefCell, Ref};
use std::rc::Rc;
@ -978,7 +978,70 @@ impl EmptyVolume {
pub fn select_lights(&self, lights: LightsIter, light_number: u32, min_light_weight: f32) -> Vec<u32> {
let mut weighted_indices = vec![];
for light in lights {
for light in lights {
let mut has_hitable_side = false;
if self.color_bottom.len() > 0 {
let center = self.real_position + Vector3{x: self.size_x as f32 * 0.5, y: self.size_y as f32 * 0.5, z: self.size_z as f32 * 0.0 - 0.5} * self.scale;
let normal = Vector3 {x: 0.0, y: 0.0, z: 1.0};
let dir = light.borrow().get_direction(center);
if normal.dot(dir) < 0.0 {
has_hitable_side = true;
}
}
if self.color_top.len() > 0 {
let center = self.real_position + Vector3{x: self.size_x as f32 * 0.5, y: self.size_y as f32 * 0.5, z: self.size_z as f32 * 1.0 - 0.5} * self.scale;
let normal = Vector3 {x: 0.0, y: 0.0, z: -1.0};
let dir = light.borrow().get_direction(center);
if normal.dot(dir) < 0.0 {
has_hitable_side = true;
}
}
if self.color_front.len() > 0 {
let center = self.real_position + Vector3{x: self.size_x as f32 * 0.5, y: self.size_y as f32 * 0.0 - 0.5, z: self.size_z as f32 * 0.5} * self.scale;
let normal = Vector3 {x: 0.0, y: 1.0, z: 0.0};
let dir = light.borrow().get_direction(center);
if normal.dot(dir) < 0.0 {
has_hitable_side = true;
}
}
if self.color_back.len() > 0 {
let center = self.real_position + Vector3{x: self.size_x as f32 * 0.5, y: self.size_y as f32 * 1.0 - 0.5, z: self.size_z as f32 * 0.5} * self.scale;
let normal = Vector3 {x: 0.0, y: -1.0, z: 0.0};
let dir = light.borrow().get_direction(center);
if normal.dot(dir) < 0.0 {
has_hitable_side = true;
}
}
if self.color_left.len() > 0 {
let center = self.real_position + Vector3{x: self.size_x as f32 * 0.0 - 0.5, y: self.size_y as f32 * 0.5, z: self.size_z as f32 * 0.5} * self.scale;
let normal = Vector3 {x: 1.0, y: 0.0, z: 0.0};
let dir = light.borrow().get_direction(center);
if normal.dot(dir) < 0.0 {
has_hitable_side = true;
}
}
if self.color_right.len() > 0 {
let center = self.real_position + Vector3{x: self.size_x as f32 * 1.0 - 0.5, y: self.size_y as f32 * 0.5, z: self.size_z as f32 * 0.5} * self.scale;
let normal = Vector3 {x: -1.0, y: 0.0, z: 0.0};
let dir = light.borrow().get_direction(center);
if normal.dot(dir) < 0.0 {
has_hitable_side = true;
}
}
if !has_hitable_side {
continue;
}
let weight = light.borrow().weighted_distance(self.real_position, Vector3{x: self.size_x as f32, y: self.size_y as f32, z: self.size_z as f32} * self.scale);
if weight >= min_light_weight {
weighted_indices.push((weight, light.borrow().get_memory_start()));