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use crate::core::*;
use crate::math::*;
pub struct PointLight {
light_buffer: UniformBuffer,
}
impl PointLight {
pub fn new(
context: &Context,
intensity: f32,
color: &Vec3,
position: &Vec3,
attenuation_constant: f32,
attenuation_linear: f32,
attenuation_exponential: f32,
) -> Result<PointLight, Error> {
let mut light = PointLight {
light_buffer: UniformBuffer::new(context, &[3u32, 1, 1, 1, 1, 1, 3, 1])?,
};
light.set_intensity(intensity);
light.set_color(color);
light.set_position(position);
light.set_attenuation(
attenuation_constant,
attenuation_linear,
attenuation_exponential,
);
Ok(light)
}
pub fn set_color(&mut self, color: &Vec3) {
self.light_buffer.update(0, &color.to_slice()).unwrap();
}
pub fn set_intensity(&mut self, intensity: f32) {
self.light_buffer.update(1, &[intensity]).unwrap();
}
pub fn set_attenuation(&mut self, constant: f32, linear: f32, exponential: f32) {
self.light_buffer.update(2, &[constant]).unwrap();
self.light_buffer.update(3, &[linear]).unwrap();
self.light_buffer.update(4, &[exponential]).unwrap();
}
pub fn set_position(&mut self, position: &Vec3) {
self.light_buffer.update(6, &position.to_slice()).unwrap();
}
pub fn buffer(&self) -> &UniformBuffer {
&self.light_buffer
}
}