74 lines
2.1 KiB
Rust
74 lines
2.1 KiB
Rust
// Copyright 2020 Sergiusz 'q3k' Bazanski <q3k@q3k.org>
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//
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// This file is part of Abrasion.
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//
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// Abrasion is free software: you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation, version 3.
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//
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// Abrasion is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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// details.
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//
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// You should have received a copy of the GNU General Public License along with
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// Abrasion. If not, see <https://www.gnu.org/licenses/>.
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use std::time;
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use cgmath as cgm;
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use crate::physics::color;
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use crate::render::vulkan::data;
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/// An Omni point light, with position in 3d space, and 'color' defined in lumens per CIE XYZ
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/// color channel.
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#[derive(Debug)]
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pub struct Omni {
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/// Luminour power/flux defined as lumens per XYZ color channel.
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pub color: color::XYZ,
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}
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impl Omni {
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/// Make a test light. This has... a color. It's kinda yellow. And something close to 650
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/// lumens of luminous power.
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// TODO(q3k): implement [Kry85] (eq. 68) somewhere in //engine/physics for generation
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// of nice lights colours from color temperature.
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//
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// [Kry85]
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// M. Krystek. 1985. "An algorithm to calculate correlated color temperature"
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// Color Research & Application, 10 (1), 38–40.
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pub fn test() -> Self {
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Self::with_color(color::XYZ::new(234.7*200.0, 214.1*200.0, 207.9*200.0))
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}
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pub fn with_color(color: color::XYZ) -> Self{
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Self {
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color,
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}
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}
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pub fn vulkan_uniform(&self, pos: &cgm::Vector4<f32>) -> data::OmniLight {
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// TODO: cache this?
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data::OmniLight {
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pos: [pos.x, pos.y, pos.z, pos.w],
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color: [self.color.x, self.color.y, self.color.z, 0.0],
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}
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}
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}
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#[derive(Debug)]
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pub enum Light {
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Omni(Omni),
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}
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impl Light {
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pub fn omni_test() -> Light {
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Light::Omni(Omni::test())
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}
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pub fn omni_with_color(color: color::XYZ) -> Light {
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Light::Omni(Omni::with_color(color))
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}
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}
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