modelio/
light.rs

1use std::ptr;
2
3use crate::error::Result;
4use crate::ffi;
5use crate::handle::ObjectHandle;
6use crate::object::Object;
7use crate::types::{LightInfo, LightType};
8use crate::util::{c_string, parse_json, required_handle};
9
10#[derive(Debug, Clone)]
11pub struct Light {
12    handle: ObjectHandle,
13}
14
15impl Light {
16    pub(crate) fn from_handle(handle: ObjectHandle) -> Self {
17        Self { handle }
18    }
19
20    pub fn new() -> Result<Self> {
21        let mut out_light = ptr::null_mut();
22        let mut out_error = ptr::null_mut();
23        let status = unsafe { ffi::mdl_light_new(&mut out_light, &mut out_error) };
24        crate::util::status_result(status, out_error)?;
25        Ok(Self::from_handle(required_handle(out_light, "MDLLight")?))
26    }
27
28    pub fn info(&self) -> Result<LightInfo> {
29        parse_json(
30            unsafe { ffi::mdl_light_info_json(self.handle.as_ptr()) },
31            "MDLLight",
32        )
33    }
34
35    pub fn set_light_type(&self, light_type: LightType) {
36        unsafe { ffi::mdl_light_set_light_type(self.handle.as_ptr(), light_type.as_raw()) };
37    }
38
39    pub fn set_color_space(&self, color_space: &str) -> Result<()> {
40        let color_space = c_string(color_space)?;
41        unsafe { ffi::mdl_light_set_color_space(self.handle.as_ptr(), color_space.as_ptr()) };
42        Ok(())
43    }
44
45    #[must_use]
46    pub fn irradiance_at_point(&self, point: [f32; 3]) -> [f32; 4] {
47        let mut components = [0.0_f32; 4];
48        unsafe {
49            ffi::mdl_light_irradiance_at_point(
50                self.handle.as_ptr(),
51                point[0],
52                point[1],
53                point[2],
54                &mut components[0],
55                &mut components[1],
56                &mut components[2],
57                &mut components[3],
58            );
59        }
60        components
61    }
62
63    #[must_use]
64    pub fn as_object(&self) -> Object {
65        Object::from_handle(self.handle.clone())
66    }
67}
modelio/light.rs

modelio/
light.rs
