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authorjaseg <git-bigdata-wsl-arch@jaseg.de>2022-06-18 17:29:27 +0200
committerjaseg <git-bigdata-wsl-arch@jaseg.de>2022-06-18 17:29:27 +0200
commit14e9d7fbc2a935ec9c2e6eb9d68e8d250f9614d4 (patch)
tree9f86768b8ffc04a39db9b614aa4cc11956dda29b /svg-flatten/src/nopencv.cpp
parent1622e9c9435d263c3c275718947b1030ad9b6b48 (diff)
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svg-flatten: add drill handling to outline mode
Diffstat (limited to 'svg-flatten/src/nopencv.cpp')
-rw-r--r--svg-flatten/src/nopencv.cpp27
1 files changed, 27 insertions, 0 deletions
diff --git a/svg-flatten/src/nopencv.cpp b/svg-flatten/src/nopencv.cpp
index 121e9e1..e157ab5 100644
--- a/svg-flatten/src/nopencv.cpp
+++ b/svg-flatten/src/nopencv.cpp
@@ -483,6 +483,33 @@ double gerbolyze::nopencv::polygon_area(Polygon_i &poly) {
return acc / 2;
}
+double gerbolyze::nopencv::polygon_perimeter(Polygon_i &poly) {
+ double acc = 0;
+ size_t prev = poly.size() - 1;
+ for (size_t cur=0; cur<poly.size(); cur++) {
+ double dx = poly[cur][0] - poly[prev][0];
+ double dy = poly[cur][1] - poly[prev][1];
+ acc += sqrt(dx*dx + dy*dy);
+ prev = cur;
+ }
+ return acc;
+}
+
+d2p gerbolyze::nopencv::polygon_centroid(Polygon_i &poly) {
+ double acc_x = 0, acc_y = 0;
+
+ double area = polygon_area(poly);
+ size_t prev = poly.size() - 1;
+ for (size_t cur=0; cur<poly.size(); cur++) {
+ double a = poly[prev][1]*poly[cur][0] - poly[cur][1]*poly[prev][0];
+ acc_x += (poly[prev][0] + poly[cur][0]) * a;
+ acc_y += (poly[prev][1] + poly[cur][1]) * a;
+ prev = cur;
+ }
+
+ return { acc_x / (6*area), acc_y / (6*area) };
+}
+
template<typename T>
gerbolyze::nopencv::Image<T>::Image(int size_x, int size_y, const T *data) {
assert(size_x > 0 && size_x < 100000);