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Chapter 31: Painting in the Viewpoint Canvas and Rendering Surface Maps
                                             With an object selected, select one of the brushes in the Canvas palette; if the object has a material with a
                                             bitmap applied, you can begin painting right away. If the object doesn’t have a material or a texture applied,
                                             then the Assign Material dialog box appears, as shown in Figure 31.2.
                                       FIGURE 31.2
                                     The Assign Material dialog box lets you choose the channel to paint on.

                                             The Assign Standard Material button pops up a list of available channels where the texture may be applied
                                             using the Standard material. The Browse Material to Assign button opens the Material/Map Browser, where
                                             you can choose the type of material to use. The list of available channels includes Ambient Color, Diffuse
                                             Color, Specular Color, Specular Level, Glossiness, Self-Illumination, Opacity, Filter Color, Bump,
                                             Reflection, Refraction, and Displacement. After choosing a texture channel, the Create Texture dialog box
                                             appears, as shown in Figure 31.3, where you can set the size of the texture map and specify where the tex-
                                             ture is saved, or you can select an existing texture. If a new texture is created, you need to specify a path
                                             and name for the new texture file. The texture is automatically mapped to the selected channel for the
                                             object’s material. The Color setting is used for the texture’s initial background color.


                                       FIGURE 31.3
                                     The Create Texture dialog box automates the process of applying a material with a texture.















                                             Using the Canvas brushes
                                             After the texture is set up, you can begin painting by clicking the Paint brush icon and dragging in the
                                             viewport over the selected object. Using the settings under the brush icons, you can set the Color, Radius,
                                             Opacity, Hardness, Spacing, Scatter, and Blur/Sharpen values. The available settings change depending on
                                             the brush selected.
                                             When a brush is selected, it is highlighted in the Viewport Canvas palette and remains active until another
                                             brush is selected or until you right-click in the viewport. Table 31.1 lists the available brushes and layer
                                             tools.





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