1
2#pragma once
3
4#include "arithmetics.hpp"
5#include "Vector2.h"
6#include "BitmapRef.hpp"
7
8namespace msdfgen {
9
10template <typename T, int N>
11static void interpolate(T *output, const BitmapConstRef<T, N> &bitmap, Point2 pos) {
12 pos -= .5;
13 int l = (int) floor(pos.x);
14 int b = (int) floor(pos.y);
15 int r = l+1;
16 int t = b+1;
17 double lr = pos.x-l;
18 double bt = pos.y-b;
19 l = clamp(l, bitmap.width-1), r = clamp(r, bitmap.width-1);
20 b = clamp(b, bitmap.height-1), t = clamp(t, bitmap.height-1);
21 for (int i = 0; i < N; ++i)
22 output[i] = mix(mix(bitmap(l, b)[i], bitmap(r, b)[i], lr), mix(bitmap(l, t)[i], bitmap(r, t)[i], lr), bt);
23}
24
25}
26