How to use the stereoscopic effect in ppt

Two-dimensional is a plane space, and three-dimensional is a three-dimensional space. The animation effect is different ~ 3D is more stereoscopic. Supplement: 2. Animation fragment making. According to the preliminary design, animation clips are made in the computer by related production software, and the production processes are modeling, material, lighting, animation, camera control, rendering and so on. This is the production feature of 3D animation. Modeling means that the animator draws a character model in the computer through three-dimensional modeling software according to the previous modeling design. This is a very heavy work in 3D animation, and it is necessary to model the characters that need to appear and the objects that appear in the scene. The soul of modeling is creativity, the core is conception, and the source is artistic accomplishment. Commonly used softwares include 3DS Max, Auto CAD, Maya, etc. Common modeling methods are: polygon modeling-complex models are represented by small triangles or quadrangles (not smooth after enlargement); Spline curve modeling-define a smooth surface with several spline curves, which is characterized by smooth transition without sharp edges or wrinkles. Therefore, it is very suitable for modeling and animation of organic objects or roles. Subdivision modeling-a modeling method that combines the advantages of polygon modeling and spline curve modeling. Modeling is not about accuracy, but about artistry, such as the dinosaur model in Jurassic Park. Material mapping, the material is the texture of the material, which gives the model vivid surface characteristics, which are embodied in the color, transparency, reflectivity, reflection intensity, self-luminescence, roughness and so on. Mapping refers to pasting a two-dimensional picture onto a three-dimensional model through software calculation to form surface details and structures. For a specific picture to be pasted in a specific location, 3D software uses the concept of mapping coordinates. Generally, there are plane, cylinder and sphere mapping methods, corresponding to different needs. The material and mapping of the model should be consistent with the properties of objects in real life. Lighting aims to maximize the simulation of natural light types and artificial light types. Generally, there are floodlights (such as the sun, candles and other four-sided light sources) and directional lights (such as searchlights, flashlights and other light sources with lighting directions) in 3D software. Lighting plays the role of illuminating the scene, casting shadows and adding atmosphere. Three kinds of light sources are usually used: main light source, auxiliary light source and backlight. The main light is the basic light source with the highest brightness. The main light determines the direction of light, and the shadow of a character is mainly produced by the main light, which is generally placed at 3/4 of the front, that is, 45 degrees left or right of the front of the character. The role of the auxiliary lamp is to soften the shadow produced by the main lamp, especially the facial area, which is often placed near the camera. The function of backlight is to strengthen the protagonist, show his outline and make the protagonist stand out from the background. Backlight is usually placed in the back 3/4. Three-dimensional animation camera control, according to the principle of photography, the camera tool in three-dimensional animation software is used to realize the lens effect of storyboard design. The stability and smoothness of the picture is the first factor in using the camera. The camera function is only used when the plot needs it, not at any time. The change of camera position can also make the picture have dynamic effect. Animation, according to the storyboard and action design, using the designed shape, make a moving picture fragment in the three-dimensional animation software. Motion and picture changes are realized by key frames, the main picture of animation is set as key frames, and the transition between key frames is completed by computer. Most 3D softwares express animation information through animation curves. The horizontal axis of animation curve is time (frame) and the vertical axis is animation value. As can be seen from the animation curve, the animation setting is fast and slow, jumping up and down. For example, 3DS Max animation curve editor. The action of three-dimensional animation is a technology, in which the mouth shape changes, the expression of emotions, the action of walking and so on. The shaping of characters should conform to the laws of nature, and the production should be as delicate and realistic as possible, so animators should specialize in the motion laws of various things. If necessary, you can make animation with reference to the change of voice, for example, you can make the change of mouth shape according to the voice of speech, so that the action can be coordinated with the voice. For the change of human movement, the system provides skeleton tools. Binding the model to the bone through skin technology is easy to produce actions that conform to the laws of human motion. Rendering means that according to the setting of the scene, the material and texture of the object are given, as well as the illumination, and a complete picture or an animation is drawn by the program. Three-dimensional animation must be rendered before it can be output. The ultimate goal of modeling is to get a static or animated rendering, which needs rendering to be completed. Rendering is done by the renderer. The rendering quality of wired scanning mode (line scanning is built into 3ds MAX), ray tracing mode and radiation rendering mode (light energy transfer is like Lightscape rendering software) of the renderer is improved in turn, but the required time is also increased accordingly. The better renderers are MetalRay of Softimage Company and RenderMan of Pixal Company (Maya software also supports Renderman rendering output). Usually the output is a video file of AVI class. 3. Post-synthesis. The post-synthesis of 3D animation of movies and TV shows is mainly based on the design of storyboard and the editing of nonlinear editing software to generate animated movie and TV files. The production of three-dimensional animation is the product of combining literature, art aesthetics, dynamics, film art and other disciplines with multimedia computers as tools. In practice, it needs the cooperation of many people, bold innovation and continuous improvement, close integration with social reality, reflecting people's needs and advocating justice and harmony. A two-dimensional image is an image on a plane. Two-dimensional animation is an improvement of traditional manual animation. By inputting and editing key frames; Calculating and generating an intermediate frame; Define and display the motion path; Color the picture interactively; Produce some special effects; Realize the synchronization of picture and sound; Control the recording of sports series and so on. At present, two-dimensional animation software, such as Animation Stand, also called three-dimensional animation, is a new technology with the development of computer software and hardware technology in recent years. Three-dimensional animation software first establishes a virtual world in the computer. Designers build models and scenes in this virtual three-dimensional world according to the shape and size of the objects to be represented, then set the motion trajectory of the model, the motion of the virtual camera and other animation parameters according to the requirements, and finally assign specific materials to the model, and light it as needed. When all this is done, the computer can automatically calculate and generate the final picture. References:

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