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Raise the triangle thickness minimum to 2

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Erica Fischer
2023-10-27 15:33:22 -07:00
parent 705da717b2
commit 93c7398998
61 changed files with 31907 additions and 27233 deletions
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earcut.cpp
+17 -2
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@@ -22,15 +22,30 @@ drawvec reinforce(drawvec const &pts, std::vector<std::vector<Point>> polygon, d
if (distance_from_line(pts[indices[v1]].x, pts[indices[v1]].y, // the point
pts[indices[v2]].x, pts[indices[v2]].y, // start of opposite side
pts[indices[v3]].x, pts[indices[v3]].y, // end of opposite side
&px, &py) < scale) {
&px, &py) < 2 * scale) {
double ang = atan2(pts[indices[v1]].y - py, pts[indices[v1]].x - px);
// make a new triangle that is not so flat
out2.push_back(draw(VT_MOVETO, pts[indices[v2]].x, pts[indices[v2]].y));
out2.push_back(draw(VT_LINETO, pts[indices[v3]].x, pts[indices[v3]].y));
out2.push_back(draw(VT_LINETO, px + scale * cos(ang), py + scale * sin(ang)));
out2.push_back(draw(VT_LINETO, px + scale * 2 * cos(ang), py + scale * 2 * sin(ang)));
out2.push_back(draw(VT_LINETO, pts[indices[v2]].x, pts[indices[v2]].y));
}
#if 0
long long dx = pts[indices[v2]].x - pts[indices[v1]].x;
long long dy = pts[indices[v2]].y - pts[indices[v1]].y;
double d = sqrt(dx * dx + dy * dy);
if (d < sqrt(2) * scale) {
// make a new triangle with a longer side
double ang = atan2(dy, dx);
out2.push_back(draw(VT_MOVETO, pts[indices[v3]].x, pts[indices[v3]].y));
out2.push_back(draw(VT_LINETO, pts[indices[v1]].x - sqrt(2) * scale * cos(ang), pts[indices[v1]].y - sqrt(2) * scale * sin(ang)));
out2.push_back(draw(VT_LINETO, pts[indices[v2]].x + sqrt(2) * scale * cos(ang), pts[indices[v2]].y + sqrt(2) * scale * sin(ang)));
out2.push_back(draw(VT_LINETO, pts[indices[v3]].x, pts[indices[v3]].y));
}
#endif
}
}