maya金属材质（Maya metal material）

maya金属材质（Maya metal material） maya金属材质(Maya metal material) Abstract: This paper describes the Maya software in 3D animation workflow, as well as the important role of material technology in the whole three-dimensional fabrication, explored deeply on fabrication methods of metal material, has received relatively good results. Keywords: Maya material exploration 1 Introduction Maya is the best industrial standard application software that is widely used in 3D modeling, animation design and special effects making. It can meet the needs of film and television production, game development, web design and advertising creativity. It is also the largest commercial 3D graphics application in history, and is far more complex and functional than any other 3D animation software. Its powerful 3D modeling, animation, texturing, lighting and rendering, and dynamics modules have attracted countless CG researchers to explore. 2 material status in Maya animation production The process of making a professional 3D is often called a workflow. In the Maya software also has a high efficiency of its own work process: (pre production) - > (Jian Mo) - > (character) - > (animation) - > (materials and textures) - > (lighting and rendering) - > (post production). And the position of material in Maya animation can be summarized by the jargon of CG staff: "3D production, three points modeling, seven points material."". This shows that the material in the 3D production in an important position. Therefore, the material technology is the 3D producers must focus on research, here, mainly on the production of metal materials to explore some of the technology. 3, the realization of metal material technology 3.1 features of metal material Whether a surface metallic look, mainly depends on the following points: high light area size, high light intensity, the color of the metal itself and the surface reflection effect, at the same time the surface of the concave convex object level, external light environment etc.. These factors directly determine the performance of their metal texture. Therefore, in order to make an ideal metal material, it is necessary to make a thorough and detailed analysis of various factors and, on the basis of that, make reasonable debugging of the factors that affect its material quality. The following concrete metal fabrication process explores the techniques for making it. 3.2 made of metal based on Blinn ball 3.2.1 settings for Blinn material "two", "black", and "low" Maya HyperShade (first in the material editor) to create a Blinn material, the properties in Common Material column, Attributes column (Figure 1), the color is black, Transparency opacity (i.e., black opaque) so that the diffusion area darker, is conducive to high light performance so, the characteristics of metal is more obvious, more conducive to the above features, Diffuse can also be decreased diffusion. 3.2.2 sharp, high light "0.1+1" principle Then, in the Specular Shading column of the Blinn material (Figure two), the Eccentricity high light area is reduced to about 0.1, and the Specular Roll off (high light overflow) value is raised to around 1, and a sharp metallic light texture can be obtained. If you want to get a faint heavy metal high light texture, you can raise the Eccentricity, Specular, Roll, Off down, while reducing the Diffuse diffuse value. 3.2.3 the first channel of metallic color Specular Color To set the color of metal Specular Color mirror color property, metal color is white, yellow and so on, if you want to show the rich color, but also at the back of the chessboard behind a Ramp connection node (gradient) or a File (file) node external mapping (as shown in Figure three). 3.2.4 metal reflective "weapon" - Reflected Color and Environment Texture Alliance Finally, to make the metal surface texture more rich, can reflect some external environment color, you can find the Reflected Color reflection color attributes in the Specular Shading column, The checkerboard behind it connects to a Environment Texture environment texture node (Figure four), select a node here, such as the Env Sphere ball, then the image chessboard srccopy behind the introduction of a Ramp (gradient) node or a File connection (file) node (the best external map to introduce a HDR map, the effect is less than the general good map). As a result, metal reflections are controlled by the final connections of the Reflected Color and the Environment Texture Alliance (Ramp or File, etc.). At the same time, you can modify the Reflectivity reflection coefficient to enhance or reduce the effect of the "sharp weapon". Experience tells us that Reflectivity is set to about 0.8, the effect is better. 3.2.5's unknown "stunt" -- the dialectical unity of color, Gain and Specular Color If a File Env Sphere connection (file) node into a picture, then you can open the File attribute column node, find the color Balance color balance property, modify the color Gain color gain value, special attention should be the tone and Specular Color mirror color color Gain color gain (and metal color (consistent) that is not the same), but also maintain the relative difference between the two. In this way, the color of the metal itself can be dialectically unified with the environmental color reflected, so that the metal effect is more realistic and the color is purer. 3.2.6 digs deeper into the potential value of images - Repeat, UV, texture stretching, Offset, and Noise UV texture disorder In order to increase the texture changes of the incoming picture, you can also enter the 2D Texture Placement node to stretch the picture. Find Repeat UV: (a) (b), repeat the UV property, and set the value of a, B. When a>b, the picture stretches V toward; when a 3.3 improvements in Blinn material 3.3.1Ramp gradient texture node control technique for Reflectivity reflection value In order to more flexibly control Reflected Color reflection color attributes, but also in the Reflectivity reflection value to connect a Ramp gradient texture node, set bright dark gradient (such as: bright - Dark - bright, dark - bright - dark, A - B - A). Then the Sampler Info information sampling node connecting the Ramp gradient node, namely the sampling node Sampler Info information Facing Ratio (toward the rate) and Ramp (V coord V gradient node to) associated Ramp gradient at the direction of attention should be set to V. In this way, the Reflectivity value appears to vary with the visual angle, so that the environment picture changes introduced by Reflected Color are more realistic. If you need to add the Ramp gradient of the details in the middle color gradient color (such as A - B - A B) connected to a Fractal (fragments) nodes, adjusting the properties of the Amplitude and Threshold values are intermediate color rich, of course, the Fractal 2D Texture Placement (fragments) nodes can also be some modifications, such as stretching effect and other treatment, the metal material texture more realistic. 3.3.2 creates realistic metal paint - a perfect combination of Clear, Coat, and Reflectivity reflections The material of paint baking effect is widely used in advertisement manufacture, such as car, modern furniture, mobile phone and so on. This material is often better than other materials in reflection. In fact, as long as the capture Reflectivity (reflection coefficient) to control this property on the line, in the Maya Hypershade General Utilities (general utility tool) in Clear Coat (V light coating) node, the Reflectivity Clear Coat Out Value attribute link to Blinn material on the key technology of this metal paint material is complete. Of course, Clear Coat (bright coating) node can also be connected with the material ball Color attributes, etc., but the practice test found that "Clear Coat nodes and Reflectivity attributes combination is the perfect paint combination."".