Cắt Nội Khung Xương Thẳng Đứng (Inset Straight Skeleton)

This add-on makes 'inset polygons', which you get when you advance the edges of the polygon inwards at a constant rate. Sometimes when you do that, an advancing edge shrinks to nothing, or edges hit an advancing concave corner. The algorithm tries to do the right thing when this happens: one or more new polygons may form at that point, and insetting can continue inside those new polygons.

You can either inset a single polygon or you can treat groups of polygons connected together as a single region, forming a complicated polygon (that may include holes) to be inset as a unit.

In addition to insetting, it is often useful to raise or lower the inset polygon (perpendicular to the inset plane), so a parameter to do that is included also.

Kích Hoạt (Activation)

• Mở Blender và chuyển đến Cài Đặt Sở Thích, sau đó đến thẻ Trình Bổ Sung.

• Click Mesh then Inset Straight Skeleton to enable the script.

Miêu Tả (Description)

Enter mesh Edit Mode on a mesh object, and select one or more faces.

Tỷ Lệ (Scale)

Phần Trăm (Percent)

Means that amounts are a percentage of the amount for a full inset.

Tuyệt Đối (Absolute)

Means that the amounts are in units.

Số Lượng (Amount)

The distance to move the edges inward.

Chiều Cao (Height)

The distance to move the inset polygons upward.

Khu Vực (Region)

If checked, treat all selected faces as a region to be inset, otherwise inset each face individually.

Tứ Giác Hóa (Quadrangulate)

Nội Dung Cần Viết Thêm.

Chi Tiết Kỹ Thuật (Technical Details)

The method used is described on the Straight Skeleton Wikipedia page. Consider this starting polygonal region:

As the edges move inward at a constant speed, two kinds of events can happen. One is that an advancing corner can hit an advancing edge, as seen on the right part of this picture:

When this happens, the inset polygon splits into two.

The other is that an advancing edge can shrink to a point. When the whole process continues until the end, you get something like this:

One cool thing about this algorithm is that if you move upwards or downwards (perpendicular to the inset plane) at a constant speed, you form 'roofs' with a fixed pitch.

Xem thêm

Xin hãy xem trang Bách Khoa Toàn Thư cũ (old Wiki) để đọc bản tài liệu gốc được lưu trữ ở đó.

Tham Chiếu (Reference)

Hạng Mục:

Mesh (Khung Lưới)

Miêu Tả (Description):

Make an inset inside selection using straight skeleton algorithm.

Địa Điểm (Location):

3D Viewport operator

Tập Tin (File):

mesh_inset folder

Tác Giả (Author):

Howard Trickey

Giấy Phép (License):

GPL

Ghi Chú (Note):

Trình Bổ Sung này được gói cùng với Blender.