Dalian Xinhui Digital Technology attaches great importance to the treatment of light and shadow in the process of rendering drawing production,Website:http://www.china-rendering.com, because it is of great significance to understand the relationship between architectural form and space.To some extent, to deal with the relationship between light and shadow is to solve the relationship between shadow and contour, light and shade level and black and white of the effect drawing. The focus of light and shadow is shadow and light receiving form.Shadows:The basic function of shadow is to show the architectural form, concave and spatial level. In addition, the contrast between light and dark of shadow is often used in the picture to focus people's attention and highlight the main rest room.Shadow points to note: first of all in the general environment there is no pure black shadow.Shadow should not be excessive. In general environment, shadow should be controlled to this point.Secondly, we should control the edge of the shadow, that is, there should be halo.Form of exposure:In architectural renderings, the most commonly used form of receiving light is mainly two: one side receiving light, two sides receiving light.Single surface receiving light means that there is only one main light source in the scene and the buildings in the scene are not supplemented.It is mainly used to show buildings with narrow side and concise front.In addition, this form of exposure can be applied to bird 's-eye view, which can be used to highlight buildings with shadows and enhance the sense of hierarchy in space.In the expression of outdoor architectural renderings, the use of light on one side is rare, because it is difficult to achieve the true natural lighting effect in this form.