Consistently convert coordinates.

src/core.rs

@@ -222,19 +222,19 @@ pub trait PointLike {
     fn y(&self) -> f32;
 
     fn x_i32(&self) -> i32 {
-        self.x() as i32
+        self.x().trunc() as i32
     }
 
     fn y_i32(&self) -> i32 {
-        self.y() as i32
+        self.y().trunc() as i32
     }
 
     fn x_usize(&self) -> usize {
-        self.x() as usize
+        self.x().trunc() as usize
     }
 
     fn y_usize(&self) -> usize {
-        self.y() as usize
+        self.y().trunc() as usize
     }
 
     fn f32(&self) -> (f32, f32) {
@@ -248,6 +248,7 @@ pub trait PointLike {
     fn floor(&self) -> (f32, f32) {
         (self.x().floor(), self.y().floor())
     }
+
     fn to_index(&self, width: usize) -> usize {
         ((self.y_i32() * width as i32) + self.x_i32()) as usize
     }