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use crate::{ffi, Bitmap, Gray, Rgb, Rgba};
pub const MID_VALUE: f32 = 0.5;
pub trait RenderTarget<Source>: Sized {
fn render(target: &mut Bitmap<Self>, source: &Bitmap<Source>, px_range: f64, mid_value: f32);
}
impl RenderTarget<Gray<f32>> for Gray<f32> {
fn render(
target: &mut Bitmap<Self>,
source: &Bitmap<Gray<f32>>,
px_range: f64,
mid_value: f32,
) {
unsafe {
ffi::msdfgen_renderSDF(target.as_raw_mut(), source.as_raw(), px_range, mid_value);
}
}
}
impl RenderTarget<Gray<f32>> for Rgb<f32> {
fn render(
target: &mut Bitmap<Self>,
source: &Bitmap<Gray<f32>>,
px_range: f64,
mid_value: f32,
) {
unsafe {
ffi::msdfgen_renderSDF1(target.as_raw_mut(), source.as_raw(), px_range, mid_value);
}
}
}
impl RenderTarget<Rgb<f32>> for Gray<f32> {
fn render(target: &mut Bitmap<Self>, source: &Bitmap<Rgb<f32>>, px_range: f64, mid_value: f32) {
unsafe {
ffi::msdfgen_renderSDF2(target.as_raw_mut(), source.as_raw(), px_range, mid_value);
}
}
}
impl RenderTarget<Rgb<f32>> for Rgb<f32> {
fn render(target: &mut Bitmap<Self>, source: &Bitmap<Rgb<f32>>, px_range: f64, mid_value: f32) {
unsafe {
ffi::msdfgen_renderSDF3(target.as_raw_mut(), source.as_raw(), px_range, mid_value);
}
}
}
impl RenderTarget<Rgba<f32>> for Gray<f32> {
fn render(
target: &mut Bitmap<Self>,
source: &Bitmap<Rgba<f32>>,
px_range: f64,
mid_value: f32,
) {
unsafe {
ffi::msdfgen_renderSDF4(target.as_raw_mut(), source.as_raw(), px_range, mid_value);
}
}
}
impl RenderTarget<Rgba<f32>> for Rgba<f32> {
fn render(
target: &mut Bitmap<Self>,
source: &Bitmap<Rgba<f32>>,
px_range: f64,
mid_value: f32,
) {
unsafe {
ffi::msdfgen_renderSDF5(target.as_raw_mut(), source.as_raw(), px_range, mid_value);
}
}
}
impl<S> Bitmap<S> {
pub fn render<T: RenderTarget<S>>(
&self,
mut target: impl AsMut<Bitmap<T>>,
px_range: f64,
mid_value: f32,
) {
T::render(target.as_mut(), self, px_range, mid_value)
}
}