Giới Thiệu (Introduction)

Hoạt Họa với Bút Chì Dầu (Animating with Grease Pencil)

Mục tiêu chính của Bút Chì Dầu là cung cấp một công cụ hoạt họa 2D hoàn toàn hòa quyện trong môi trường 3D.

../../_images/grease-pencil_animation_introduction_example.png

Hoạt họa mẫu hiển thị khung khóa của đối tượng Grease Pencil trong Dope Sheet có kích hoạt gọt vỏ hành tây.

Trong Blender, các đối tượng Bút Chì Dầu đều có thể hoạt họa được theo nhiều phương pháp khác nhau:

Di chuyển toàn bộ như một đối tượng (Moving as a whole object)

Thay đổi vị trí, định hướng hoặc kích thước của chúng theo thời gian;

Vẽ từng khung hình một (Drawing frame by frame)

Drawing one frame at a time (traditional animation).

Biến dạng chúng (Deforming them)

Animating their points;

Hoạt họa thừa kế (Inherited animation)

Causing the object to move based on the movement of another object (e.g. its parent, hook, armature, etc.). Useful for cut-out animation for example.

For a complete overview of animation in Blender please refer to the Animation & Rigging chapter.

Hoạt Họa Truyền Thống 2D (2D Traditional Animation)

Các/Số/Khung Khóa (Keyframes)

Traditional animation in Grease Pencil is achieved with the use of keyframes that hold the strokes information at a particular frame or frame range.

With Auto keyframe activated, every time you create a stroke in Grease Pencil object Draw Mode a new keyframe is added at the current frame on the active channel. With Auto keyframe deactivated, you will have to add manually a new keyframe or your new strokes will be added on the active keyframe.

Xin xem mục Biên Soạn Khung Khóa (Keyframe Editing) for more information.

Ghi chú

The channels in the Dope Sheet correspond to the active 2D layer of the Grease Pencil object.

Grease Pencil has its own mode in the Dope Sheet to work with keyframes. See Grease Pencil mode in the Dope Sheet section for more information. There are also several tools on the Stroke menu to work with keyframes and strokes. See Animation tools for more information.

Bóc Vỏ Hành (Onion Skinning)

One key element in traditional animation is the use of onion skinning. Grease Pencil offer a lot of flexibility and options for this tool. See Onion Skinning for more information.

Các Tùy Chọn về Hoạt Họa (Animation Options)

Chế Độ Vẽ (Draw Mode)

In Draw Mode there are three options related to the animation workflow that you can use.

../../_images/grease-pencil_animation_introduction_drawing-options.png

General drawing/animation options.

Thêm Dữ Liệu Trọng Lượng

When enabled, new strokes weight data is added according to the current vertex group and weights. If there is no vertex group selected, no weight data is added.

This is useful for example in cut-out animation for adding new drawing on the same vertex group without the need to creating it afterwards.

Xin xem mục Chế Độ Sơn Trọng Lượng (Weight Paint Mode) để biết thêm thông tin.

Vẽ Bổ Sung (Additive Drawing)

Khi kiến tạo các khung hình mới thì những nét vẽ từ khung hình trước đây/đang hoạt động sẽ đã được sử dụng để làm cơ sở cho cái mới.

Đa Khung Hình (Multiframe)

If you need to add new strokes to your animation on several frames you can use multiframe drawing.

You can activate multiframe drawing with the Multiframe button next to the modes selector (faded lines icon). See Multiframe for more information.

Chế Độ Biên Soạn (Edit Mode)

In Edit Mode there is an option related to the animation workflow that you can use.

../../_images/grease-pencil_animation_introduction_edit-options.png

Multiframe edition.

Đa Khung Hình (Multiframe)

Sometimes you may need to modify several frames at the same time with edit tools, for example to repositioning drawings in an animation.

You can activate multiframe edition with the Multiframe button next to the modes selector (faded lines icon). See Multiframe for more information.

Một Số Ví Dụ (Examples)

Hoạt Họa Truyền Thống (Traditional Animation)

This example shows you how to animate a bouncing ball with a traditional 2D animation technique and Grease Pencil.

First, go to menu File ‣ New ‣ 2D Animation to start with a new 2D animation template. The template is ready to quick start your animation with a Grease Pencil object already created, Onion Skinning activated, Auto Keyframe enabled and in camera view.

  1. Set the range of the animation in the Timeline from 1 to 24.

  2. In the 3D Viewport draw a ball on the upper left corner with the Draw Tool (extreme).

  3. Move to frame 12 and draw a squashed ball in the bottom center (breakdown).

  4. Move to frame 24 and draw a ball in the top right corner of the 3D Viewport (extreme).

  5. Keep drawing all the in-between frames you want using the onion skinning ghost as a reference.

Để thử nghiệm hoạt họa, xin bấm Dấu Cách (Spacebar) để chơi nó.