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Optimize dilation.

This commit is contained in:
Patrick Walton 2019-02-06 13:48:50 -08:00
parent 6920583086
commit a6963d5f3b
1 changed files with 3 additions and 6 deletions
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9
geometry/src/dilation.rs
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@ -25,14 +25,13 @@ impl<'a> ContourDilator<'a> {
} }
pub fn dilate(&mut self) { pub fn dilate(&mut self) {
//println!("---"); // Determine orientation.
let scale = self.amount.scale_xy(match self.orientation { let scale = self.amount.scale_xy(match self.orientation {
Orientation::Ccw => Point2DF32::new( 1.0, -1.0), Orientation::Ccw => Point2DF32::new( 1.0, -1.0),
Orientation::Cw => Point2DF32::new(-1.0, 1.0), Orientation::Cw => Point2DF32::new(-1.0, 1.0),
}); });
//let input = self.contour.clone(); // Find the starting and previous positions.
let first_position = self.contour.position_of(0); let first_position = self.contour.position_of(0);
let mut prev_point_index = 0; let mut prev_point_index = 0;
let mut prev_position; let mut prev_position;
@ -45,7 +44,7 @@ impl<'a> ContourDilator<'a> {
} }
} }
// Find the starting position. // Initialize our loop.
let first_point_index = self.contour.next_point_index_of(prev_point_index); let first_point_index = self.contour.next_point_index_of(prev_point_index);
let mut current_point_index = first_point_index; let mut current_point_index = first_point_index;
let mut position = first_position; let mut position = first_position;
@ -122,8 +121,6 @@ impl<'a> ContourDilator<'a> {
} }
// Continue. // Continue.
prev_point_index = next_point_index - 1;
prev_position = position;
prev_vector = next_vector; prev_vector = next_vector;
position = next_position; position = next_position;
current_point_index = next_point_index; current_point_index = next_point_index;