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Chapter 17: Rendering

Chapter 17: Rendering. Shading or rendering turns your three-dimensional model into a realistic (eye-catching) image. After completing this Chapter, you will be able to do the following:. Visual Styles Render a 3D model Create and modify light Create and modify a material. Visual Styles.

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Chapter 17: Rendering

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  1. Chapter 17: Rendering

  2. Shading or rendering turns your three-dimensional model into a realistic (eye-catching) image. After completing this Chapter, you will be able to do the following: • Visual Styles • Render a 3D model • Create and modify light • Create and modify a material

  3. Visual Styles AutoCAD provides a Visual Styles Manager to control the display of edges and shading of objects on the screen, primarily in 3D models. The collective settings can be saved in a Visual Style to be applied when needed. Effects are visible as soon as a visual style is applied or one of its settings is changed. The Visual Styles Manager displays sample images of the visual styles available in the drawing.

  4. Visual Style Manager

  5. Render a Model AutoCAD render facility creates realistic models from AutoCAD drawings. With the AutoCAD RENDER command you can adjust lighting factors, material finishes, and camera placement. All these options provide a great deal of flexibility.The tools available for rendering adjust the type and quality of the rendering, set up lights and scenes, and save and replay images. However, you can always use the RENDER command without any other AutoCAD render setup.

  6. Render window

  7. Setting up a Light AutoCAD’s render facility gives great control over four types of lights in your renderings: Ambient light can be thought of as background light that is constant and distributed equally among all objects.Distant light gives off a fairly straight beam of light that radiates in one direction. Its brilliance remains constant, so an object close to the light receives as much light as a distant object. Point light radiates beams of light in all directions. Has more natural characteristics. Its brilliance diminishes as the light moves away from its source. Spotlight produces a cone of light toward a target that you specify.

  8. Lights control panel

  9. Lights in Model window

  10. Sun Properties window

  11. Applying Materials The RMAT command gives you the power to modify the light reflection characteristics of the objects you will render. By modifying these characteristics, you make objects appear rough or shiny. These finish characteristics are stored in the drawing via surface property blocks. The drawing contains one surface property block for each finish you create, an attribute from the name, and AutoCAD color index (ACI) if assigned. You can modify materials by manipulating ambient, diffuse, specular, and roughness factors.

  12. Materials window

  13. Setting Preferences for Rendering The Rendering Preferences dialog box allows to establish the default settings for rendering.

  14. The available settings in the Rendering Preferences dialog box are same as in the Render dialog box.

  15. Statistics The STATISTICS command gives detailed information on your last rendering. This can be useful to fix any problems caused due to rendering. AutoCAD displays the Statistics dialog box with detailed information of your last rendering. If necessary, you can save the information to a file.

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