fix UB in Bitmap::get_color_of_pattern (#57)

remove absolutely logically wrong and necessary method

api/gfx/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "playdate-graphics"
-version = "0.1.1"
+version = "0.1.2"
 edition = "2021"
 
 readme = "README.md"

api/gfx/src/bitmap/bitmap.rs

@@ -1,12 +1,10 @@
 use core::ffi::c_char;
 use core::ffi::c_float;
 use core::ffi::c_int;
-use core::ffi::c_void;
 use alloc::boxed::Box;
 
 use sys::ffi::CString;
 use sys::ffi::LCDColor;
-use sys::ffi::LCDPattern;
 use sys::ffi::LCDRect;
 use sys::ffi::LCDBitmap;
 pub use sys::ffi::LCDBitmapFlip as BitmapFlip;
@@ -298,19 +296,6 @@ impl<Api: api::Api, const FOD: bool> Bitmap<Api, FOD> {
 		let f = self.1.set_color_to_pattern();
 		unsafe { f(color as _, self.0, x, y) }
 	}
-
-	/// Returns 8 x 8 pattern using this bitmap.
-	/// `x, y` indicates the top left corner of the 8 x 8 pattern.
-	pub fn get_color_of_pattern<'t>(&'t self, x: c_int, y: c_int) -> &mut LCDPattern {
-		let mut color: LCDColor = 0;
-		let f = self.1.set_color_to_pattern();
-		unsafe { f(&mut color, self.0, x, y) }
-		assert!(color.is_pattern());
-
-		let ptr = color as *mut c_void as *mut u8 as *mut LCDPattern;
-		// TODO: check if ptr.is_null() ...
-		unsafe { ptr.as_mut() }.unwrap()
-	}
 }