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port stepToNextEdge

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This commit is contained in:
Henry Schimke
2023-03-31 20:08:57 -05:00
parent 097bfd1ead
commit c103609550
1 changed files with 19 additions and 15 deletions
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38
src/common/cpp_essentials/fast_edge_to_edge_counter.rs
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@@ -45,22 +45,26 @@ impl FastEdgeToEdgeCounter {
}
}
pub fn stepToNextEdge(&self, _range: i32) -> i32 {
todo!()
// int maxSteps = std::min(stepsToBorder, range);
// int steps = 0;
// do {
// if (++steps > maxSteps) {
// if (maxSteps == stepsToBorder)
// break;
// else
// return 0;
// }
// } while (p[steps * stride] == p[0]);
// p += steps * stride;
// stepsToBorder -= steps;
// return steps;
pub fn stepToNextEdge(&self, range: u32) -> u32 {
let maxSteps = std::cmp::min(self.stepsToBorder, range);
let steps = 0;
loop {
steps += 1;
if (steps > maxSteps) {
if (maxSteps == self.stepsToBorder) {
break;
} else {
return 0;
}
}
if !(self.arr.get((steps * self.stride) as usize) == self.arr.get(0)) {
break;
}
} // while (p[steps * stride] == p[0]);
self.p += steps * self.stride;
self.stepsToBorder -= steps;
return steps;
}
}