1707     Edge* prevEdge = boundary->fTail;  in simplify_boundary()  local
1709     get_edge_normal(prevEdge, &prevNormal);  in simplify_boundary()
1711         Vertex* prev = prevEdge->fWinding == 1 ? prevEdge->fTop : prevEdge->fBottom;  in simplify_boundary()
1714         double distNext = prevEdge->dist(next->fPoint);  in simplify_boundary()
1726             remove_edge(prevEdge, boundary);  in simplify_boundary()
1729                 prevEdge = join->fLeft;  in simplify_boundary()
1732                 prevEdge = boundary->fTail;  in simplify_boundary()
1735             get_edge_normal(prevEdge, &prevNormal);  in simplify_boundary()
1737             prevEdge = e;  in simplify_boundary()
1874     Edge* prevEdge = boundary->fTail;  in stroke_boundary()  local
1875     Vertex* prevV = prevEdge->fWinding > 0 ? prevEdge->fTop : prevEdge->fBottom;  in stroke_boundary()
1877     get_edge_normal(prevEdge, &prevNormal);  in stroke_boundary()
1879     Line prevInner(prevEdge->fLine);  in stroke_boundary()
1881     Line prevOuter(prevEdge->fLine);  in stroke_boundary()
1897         if (!prevEdge->fLine.nearParallel(e->fLine) && prevInner.intersect(inner, &innerPoint) &&  in stroke_boundary()
1967                 if (!inversion(innerVertices.fTail, innerVertex1, prevEdge, c)) {  in stroke_boundary()
1970                 if (!inversion(outerVertices.fTail, outerVertex1, prevEdge, c)) {  in stroke_boundary()
1984                 if (!inversion(innerVertices.fTail, innerVertex, prevEdge, c)) {  in stroke_boundary()
1987                 if (!inversion(outerVertices.fTail, outerVertex, prevEdge, c)) {  in stroke_boundary()
1997         prevEdge = e;  in stroke_boundary()
2000     if (!inversion(innerVertices.fTail, innerVertices.fHead, prevEdge, c)) {  in stroke_boundary()
2003     if (!inversion(outerVertices.fTail, outerVertices.fHead, prevEdge, c)) {  in stroke_boundary()