3D´s method of lighting（3D打灯光的方法）

3D´s method of lighting（3D打灯光的方法） 3D's method of lighting(3D打灯光的方法) First, the factors affecting the light and the relationship between each other Through the adjustment of various parameters of lighting, you can completely control the various attributes of lighting to produce the required changes. But these parameters will ultimately affect how and the relationship between them, is often the most easily confused in the process of local lighting. Angle: 3DMAX lighting effect is mainly affected by the angle of the influence, this is the most important concept in the light, and it is also the key to regulating the lights. The angle is the angle between the light and the object in the scene and the camera. In the actual adjustment, the camera and the scene are stationary, therefore, the adjustment of the light angle is mainly to adjust the position of the light. It can be summed up as following two points: (1) the larger the angle between the light and the scene object, the brighter the object surface. (2) the farther the distance between the light and the scene object, the higher the brightness of the object surface, and the less the light and shade changes. And a good effect diagram should have a clear black, white, gray change, which should adjust the light and the object between the angle of each relationship. In the light of work, to produce abundant illumination changes, you should not make the light and scene object distance is too large to avoid the dull light effect. A fill light can be opened properly and scene object distance, the light effect "tile" in the illuminated object, to light a layer of color. Color: it is an important means to adjust the light intensity, the angle difference factors will make the whole scene brightness changes, the plane by the contrast between the brightness of the light on the same general adjustment should be carried out in the angle adjustment. Attenuation: attenuation can be controlled to produce light range, change halo retreat more precisely, it is an important parameter to break the 3DMAX light single changes, it should change in detail light halo retreat control based on angle adjustment. Exclude: this parameter has hyper realistic function. Artificial lights are "blind to certain scenes", partly to compensate for the unnatural lights in 3DMAX, which are often used when simulating natural light effects. More importantly, each lamp has a definite object of illumination, and does not affect other objects, so that the illumination effect of the lamp can be controlled more accurately. Projection: this function is used to add rich light and shade changes to the light, and use with angle attenuation together, the effect is very obvious. Shadow: a shadow setting should be opened for a general light, combined with attenuation to produce a projection of a halo. Two, the principle of light Setting method of lighting the lighting habits and there is a great difference, it is also one of the reasons is difficult to master the lighting layout. Light shading and color picture before should have a certain distribution assumption, which is mainly in order to make the lighting arrangement for a purpose. The next step is how to simulate the complex changes of natural light with 3DMAX super realistic lighting. Lighting principles are the following: (1) pay attention to "stay black" in the 3DMAX scene". In the painting, the carrier is a white pigment, so try to use paper "blank", to further modify the room, and white as a color processing. In the 3DMAX scene, black is the primary color, so you should pay attention to "stay black", so that the settings of the lights can be adjusted, which can produce subtle changes in light and shade. Do not be lighting up too much, too bright, make the scene without a glance, light level changes, the rendering is more stiff". Remember to use black carefully, because everything begins with black. (2) lighting settings should not be arbitrary, should be planned in advance. Beginners have the habit of placing lights at random, resulting in very low success rates. Most of the time will be spent here. Each lamp should be arranged according to its own idea of lighting. Make sure that each lamp's control object is the primary factor in the lighting arrangement, so that each lamp as much as possible to undertake less light tasks. Although this will increase the number of lights and slow the scene rendering time, it is necessary to achieve realistic results. (3) in the lighting should be each of which have a practical effect on the effect of weak light, not essential to delete. Do not abuse, eliminate, decay, this will increase the difficulty of controlling the light. The lighting simulation system with high efficiency, controllability and good performance is the goal of lighting arrangement.