1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
#ifndef LLMR_GEOMETRY_INTERPOLATE
#define LLMR_GEOMETRY_INTERPOLATE
#include <llmr/geometry/anchor.hpp>
#include <llmr/util/math.hpp>
namespace llmr {
template <typename Vertices>
Anchors interpolate(const Vertices& vertices, float spacing, float minScale = 0.0f, int start = 0) {
float distance = 0.0f;
float markedDistance = 0.0f;
int added = start;
Anchors points;
auto end = vertices.end() - 1;
int i = 0;
for (auto it = vertices.begin(); it != end; it++, i++) {
const auto& a = *(it),
b = *(it + 1);
float segmentDist = util::dist(a, b);
float angle = util::angle_to(b, a);
while (markedDistance + spacing < distance + segmentDist) {
markedDistance += spacing;
float t = (markedDistance - distance) / segmentDist,
x = util::interp(a.x, b.x, t),
y = util::interp(a.y, b.y, t),
s = added % 8 == 0 ? minScale :
added % 4 == 0 ? 2 :
added % 2 == 0 ? 4 :
8;
if (x >= 0 && x < 4096 && y >= 0 && y < 4096) {
points.emplace_back(x, y, angle, s, i);
}
added++;
}
distance += segmentDist;
}
return points;
}
}
#endif
|
