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add Bitmap texture coordinate sampling convenience method

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his has some off-by-one issues ... ? looks like it mostly works fine,
but i need to investigate more
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Gered 2023-04-01 00:49:52 -04:00
parent a106228517
commit ed58dc39cd
1 changed files with 7 additions and 0 deletions
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7
ggdt/src/graphics/bitmap/primitives.rs
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@ -66,6 +66,13 @@ impl<PixelType: Pixel> Bitmap<PixelType> {
*(self.pixels_at_ptr_unchecked(x, y)) *(self.pixels_at_ptr_unchecked(x, y))
} }
#[inline]
pub fn sample_at(&self, u: f32, v: f32) -> PixelType {
let x = (u * self.width as f32) as i32 % self.width as i32;
let y = (v * self.height as f32) as i32 % self.height as i32;
unsafe { self.get_pixel_unchecked(x, y) }
}
/// Renders a single character using the font given. /// Renders a single character using the font given.
#[inline] #[inline]
pub fn print_char<T: Font>(&mut self, ch: char, x: i32, y: i32, opts: FontRenderOpts<PixelType>, font: &T) { pub fn print_char<T: Font>(&mut self, ch: char, x: i32, y: i32, opts: FontRenderOpts<PixelType>, font: &T) {