def insert_node_at(path, at): index = int(at) t = at - index newpath = CreatePath() copy_path(newpath, path, 0, index) type, control, node, cont = path.Segment(index + 1) if type == Line: newpath.AppendLine((1 - t) * path.Node(index) + t * node) newpath.select_segment(-1) newpath.AppendLine(node) else: if newpath.Continuity(-1) == ContSymmetrical: newpath.SetContinuity(-1, ContSmooth) p1, p2 = control p1, p2, q, p3, p4 = subdivide(newpath.Node(-1), p1, p2, node, t) newpath.AppendBezier(p1, p2, q, ContSmooth) newpath.select_segment(-1) if cont == ContSymmetrical: cont = ContSmooth newpath.AppendBezier(p3, p4, node, cont) copy_path(newpath, path, index + 2) if path.closed: newpath.ClosePath() newpath.SetContinuity(-1, path.Continuity(-1)) return newpath
def split_path_at(path, at): index = int(at) t = at - index if path.closed: path1 = path2 = CreatePath() result = [path1] else: path1 = CreatePath() path2 = CreatePath() result = [path1, path2] copy_path(path1, path, 0, 0, copy_selection = 0) type, control, node, cont = path.Segment(index + 1) if type == Line: q = (1 - t) * path.Node(index) + t * node path2.AppendLine(q) path2.AppendLine(node) path2.select_segment(0) function = path1.AppendLine args = (q,) else: p1, p2 = control p1, p2, q, p3, p4 = subdivide(path.Node(index), p1, p2, node, t) path2.AppendLine(q) path2.AppendBezier(p3, p4, node, cont) path2.select_segment(0) function = path1.AppendBezier args = (p1, p2, q, ContSymmetrical) copy_path(path2, path, index + 2, copy_selection = 0) copy_path(path1, path, 1, index, copy_selection = 0) apply(function, args) return result
def insert_segments(path): newpath = CreatePath() newpath.AppendLine(path.Node(0), path.Continuity(0)) newpath.select_segment(0, path.SegmentSelected(0)) for i in range(1, path.len): type, p12, p, cont = path.Segment(i) if path.SegmentSelected(i) and path.SegmentSelected(i - 1): if type == Line: node = 0.5 * path.Node(i - 1) + 0.5 * path.Node(i) newpath.AppendLine(node) newpath.select_segment(-1) newpath.AppendLine(path.Node(i)) newpath.select_segment(-1) else: if newpath.Continuity(-1) == ContSymmetrical: newpath.SetContinuity(-1, ContSmooth) p1, p2 = p12 p1, p2, node, p3, p4 = subdivide(path.Node(i - 1), p1, p2, p) newpath.AppendBezier(p1, p2, node, ContSymmetrical) newpath.select_segment(-1) if cont == ContSymmetrical: cont = ContSmooth newpath.AppendBezier(p3, p4, p, cont) newpath.select_segment(-1) else: newpath.AppendSegment(type, p12, p, cont) newpath.select_segment(-1, path.SegmentSelected(i)) if path.closed: newpath.ClosePath() newpath.SetContinuity(-1, path.Continuity(-1)) return newpath
