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Clamp gradient time to [0, 1]

This commit is contained in:
Patrick Walton 2020-02-18 14:35:37 -08:00
parent 28c0811daa
commit 4419553acc
1 changed files with 3 additions and 1 deletions
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4
content/src/gradient.rs
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@ -11,6 +11,7 @@
use crate::sorted_vector::SortedVector; use crate::sorted_vector::SortedVector;
use pathfinder_color::ColorU; use pathfinder_color::ColorU;
use pathfinder_geometry::line_segment::LineSegment2F; use pathfinder_geometry::line_segment::LineSegment2F;
use pathfinder_geometry::util;
use pathfinder_simd::default::F32x4; use pathfinder_simd::default::F32x4;
use std::cmp::{Ordering, PartialOrd}; use std::cmp::{Ordering, PartialOrd};
use std::convert; use std::convert;
@ -117,11 +118,12 @@ impl Gradient {
&self.stops.array &self.stops.array
} }
pub fn sample(&self, t: f32) -> ColorU { pub fn sample(&self, mut t: f32) -> ColorU {
if self.stops.is_empty() { if self.stops.is_empty() {
return ColorU::transparent_black(); return ColorU::transparent_black();
} }
t = util::clamp(t, 0.0, 1.0);
let last_index = self.stops.len() - 1; let last_index = self.stops.len() - 1;
let upper_index = self.stops.binary_search_by(|stop| { let upper_index = self.stops.binary_search_by(|stop| {
stop.offset.partial_cmp(&t).unwrap_or(Ordering::Less) stop.offset.partial_cmp(&t).unwrap_or(Ordering::Less)