designing key animation frames, making intermediate drawings, copying them onto color film, coloring, checking and editing. Traditional animation is mainly used in
television and movie production, as a communication and exchange tool for government administration, as a means of scientific research and education, and as a training tool for industrial
sectors.
Computer animation first played a role in assisting the traditional animation production, greatly improving the production efficiency and reduce costs
costs. For example: digital input or interactive editing can be used to generate key drawings, can also be programmed to generate complex graphics
to assist in the generation of the picture; computer interpolation or control can be used to generate the intermediate picture, the use of computer coloring system to generate the color
changes in the picture, simulation of the camera function put animation frames and so on to assist in the generation of the movement; in the post-production of the auxiliary editing and add
into the companion animation.
Into the accompanying sound effects.
What's more, computers can elevate animation techniques to heights unattainable in traditional animation. For example: even the
highest animator is difficult to reproduce the real movement of three-dimensional objects, with the help of computers can be easily realized; with
modern computer modeling technology and the development of display technology, the use of computer-generated three-dimensional real sense of the model movement than two-dimensional animation
painting has an incomparable superiority.
Computer animation systems have led to the production of more and better animated films, and, unfortunately, to the production of many poor quality
animated films at the same time. The problem is that computer animators lack an understanding of the experience and techniques of manual animation that have been built up over decades
. Therefore, understanding and mastering the principles of traditional animation is essential for making animated films. With the help of some of the common
use techniques of traditional animation, the use of advanced tools of the computer, find the corresponding contrast between the two, and then develop into a more vivid technology
On the current state of computer animation, computer animation is only auxiliary animation, a trained animator
The teacher uses the computer as an auxiliary tool to make a series of two-dimensional or three-dimensional Objects composed of image frames continuous dynamic change up.
Completely computer-generated animation exists only in command-file or algorithm-controlled animation. Although computer-generated animation is becoming more and more advanced,
an animator cannot be replaced by a program any more than a writer can be replaced by a word processor. Spiritual
vivid animation techniques are still necessary to produce excellent artistic animation, and a broad and deep scientific theoretical foundation is still
the root of analog animation. Only when the motion control of the animation is completely automated and intelligent, manual intervention completely disappeared
computer animation is truly automatically generated animation.
The principle of traditional animation and some commonly used techniques in computer animation, especially three-dimensional object animation can be found
Corresponding easy to realize the method, but also can be developed into a more accurate and vivid technology. Specifically, there are the following aspects
Extension and compression. Flexible bodies keep their total volume constant during stretching and compression. When an object moves quickly, the gap between the two frames
widens, which tends to cause a sense of jumping, so the object's contours can be blurred, or the object can be stretched to make the object's movement appear smooth
. In three-dimensional computer animation only the direction of movement of the object can be realized by proportionally changing the direction of stretching or compression.
Time interval control. The time interval between two frames determines the speed of the object's movement, reflecting the object's movement characteristics
and even the character's emotional color. The correct time interval control is to reasonably allocate the proportion of time between the preparatory action, the action itself, and the action
feedback. A computer program can precisely control the proper allocation of time between these three.
Movement design. Action design includes preparatory action, theme action, subsequent action and articulation action. The preparatory action is the preparatory action for the main
theme action, the subsequent action is the concluding action of the theme action, and the connecting action is the linking
action of the two theme actions. These movements are used as a whole to express the theme movement more fully and completely.
Scene design. In order to create a certain environment and atmosphere with the theme of the action, you need to carefully design the scene layout and background,
It is closely coordinated with the time interval control, action design, and more will be expressed in the theme of the action.
Direct forward method and key frame method. Direct forward method is to play the animator's imagination, think while designing animation
methods, key frame method is the first design of key frames, time intervals, and then complete the intermediate frames composed of the overall animation, which
and computer animation in the key frame technology corresponds to the use of computer broadcast value method to generate the intermediate frame.
Slow in, slow out. In early animated films, the slow
in, slow-out technique was often used at the end of a movement in order to better represent the subject's action. In most 3D keyframe animation systems, intermediate drawings are often interpolated using a spline curve, which corresponds
to the mathematical continuity of a second- or third-order displacement function, and is achieved by locally adjusting the spline curve's position, direction, stretch, and continuity
, sometimes coupled with graphical editing of the spline.
Motion arc. A motion arc is a designation of the path of a movement from its start point to its end point. In a 3D keyframe animation system, the motion
arc is fitted by a spline curve that controls the interval between intermediate frames, and for better results, another spline curve that controls the rate should be used
as well.
In addition, there are techniques such as exaggeration, playfulness, and rendering to achieve vivid, interesting, and appealing results. In short, no
whether it is hand animation or computer animation, it is all about expressing one's thoughts and ideas accurately, clearly, and interestingly, and the animation techniques used
are a tool and a means to do so, and obviously computer animation systems are a powerful tool.