ptg 490 Chapter 20 Working with the 3D preferences (New!) gives you control over how the Photoshop 3D engine works with 3D objects. Working with 3D mod- els can take its toll on your computer’s hardware, so you need to use software—either OpenGL or Adobe Ray Tracer (ART)—and/or hardware (a video card with memory, known as VRAM) to help process the ren- dering (display) of 3D models in Photoshop. In 3D Preferences, you set VRAM usage amounts and which rendering 3D engine to use, as well as other options for display elements and fine-tune the 3D model. If OpenGL (GL stands for Graphics Library) options are not available, you need to select the Enable OpenGL Drawing check box in Performance Preferences and/or upgrade your video hardware. 4 3 Setting 3D Preferences Enable OpenGL Drawing Click the Edit (Win) or Photoshop (Mac) menu, and then point to Preferences. Click Performance. If you have a video card installed with a GPU (Graphics Processing Unit), the name of your video card appears under Detected Video Card. Select the Enable OpenGL Drawing check box to use the enhanced speed and smoothness of graphic/3D rendering and navigation. Click OK. 4 3 2 1 Installed video card name 2 From the Library of Wow! eBook ptg Chapter 20 Extending Photoshop 491 Set 3D Options Click the Edit (Win) or Photoshop (Mac) menu, and then point to Preferences. Click 3D (New!). Select options from the following: ◆ Available VRAM for 3D. Specify the amount of video memory (VRAM) you want Photoshop to use for 3D operations. ◆ Interactive Rendering. For interacting with 3D objects, select the OpenGL option to use hardware-acceleration (requires a video card), or the Ray Tracer option to use Adobe Ray Tracer (ART), and then select the related options. ◆ 3D Overlays. Specify colors for guides for highlighting 3D scene components. ◆ Ground Plane. Specify a plane side, grid spacing size, and color for the ground plane. The ground plane is a grid that reflects the position of the ground relative to the 3D model. ◆ Ray Tracer. Specify a quality amount for ray traced rendering. ◆ 3D File Loading. Specify the initial limit for active lights, and set the maximum number of diffuse textures to generate when they are absent. Click OK. 4 3 2 1 3 4 Showing and Hiding 3D Elements When you’re working with 3D objects, you can show or hide screen elements—such as the 3D axis, ground plane (New!), lights (New!), or selection (New!)—to make it easier to create the 3D artwork you want. To show or hide a 3D screen element, click the View menu, point to Show, and then select a 3D option: 3D Axis, 3D Ground Plane, 3D Lights, or 3D Selection. For Your Information 2 From the Library of Wow! eBook ptg 492 Chapter 20 Photoshop Extended provides vast improvements to the way you work with 3D files. There is a 3D menu with an assortment of commands and there are two slots on the toolbox dedicated to 3D, for a total of 10 easy- to-reach tools, as well as what’s on the 3D panel. Artists can paint directly on 3D objects without having to render them in another program. Photoshop includes support for three-dimensional files (U3D, 3DS, OBJ, KMZ, and DAE file formats) created by programs like Adobe Acrobat 3D Version 8, 3D Studio Max, Alias, Maya, and Google Earth. You can start from a text layer, a selection, or a layer mask in a document to convert it to a 3D model or open an existing 3D file. When you open a 3D file, Photoshop places the 3D model on a separate 3D layer. You can add mul- tiple 3D layers to an image. If your Photoshop document contains one or more 2D layers (typical images), you can combine any one of them with a 3D layer, or convert a 3D layer to a 2D layer. You can create a 3D model by using the 3D panel (New!) or commands on the 3D menu. Creating 3D Models Create a 3D Model from a 2D Image with the 3D Panel Open a 2D image. Select the layer or object on the canvas you want to convert into a 3D model. Select the 3D panel. Click the Source list arrow, and then select a source option: Selected Layer(s), Work Path, or Current Selection. Select from the available options: ◆ 3D Postcard. Creates a plane with 3D properties. ◆ 3D Shape From Preset. Creates a 3D shape from a preset, such as cone, cube, donut, or hat. ◆ 3D Repoussé Object. Creates a 3D model using repoussé. ◆ 3D Mesh From Grayscale. Converts a grayscale image into a 3D model depth map using mesh options. ◆ 3D Volume. Creates a 3D volume model from a multi- frame file, such as a DICOM. Click the Create button. 6 5 4 3 2 1 3 4 5 6 From the Library of Wow! eBook ptg Chapter 20 Extending Photoshop 493 Insert a 3D Model from a File Open a document. Click the 3D menu, and then click New Layer from 3D File. ◆ You can also select File from the Source list arrow in the 3D panel, and then click Create. Navigate to the location where the 3D file is located, and then select the 3D file. Click Open. A new 3D layer appears in the document. To add a 3D la yer to a n im age, drag the 3D layer from one layer in the Layers panel to another layer. Select the 3D layer in the new location. Use the 3D tools on the toolbox or on the 3D panel to view, position, or scale the 3D model. ◆ Change 3D position and scale. Use the following 3D tools: 3D Rotate Tool, 3D Roll Tool, 3D Pan Tool, 3D Slide Tool, or 3D Scale Tool. ◆ Change 3D view. Use the following 3D tools: 3D Orbit Tool, 3D Roll View Tool, 3D Pan View Tool, 3D Walk View Tool, and 3D Zoom Tool. 7 6 5 4 3 2 1 7 6 3D model Did You Know? You can convert a 3D layer to a 2D layer. Select the 3D layer in the Layers panel, click the 3D menu, and then click Rasterize. From the Library of Wow! eBook ptg Repoussé is an ancient metalworking technique for embossing artwork on the surface of metals, such as gold, silver, copper, tin, and bronze. In Photoshop, you can use Adobe Repoussé (New!) to convert 2D art- work, including rasterized text, into 3D models. With the Create New 3D Object section on the 3D panel, you can start from a text layer, a selec- tion, or a layer mask to convert it to a 3D model. After you create the 3D model, you can use the Repousse dialog box to manipulate object prop- erties, such as depth, scale, bend, shear, or twist. In addition, you can inflate the front or back of the object like a balloon as well as apply a custom bevel. 494 Chapter 20 Creating 3D Models Using Repoussé Create a 3D Model from a 2D Image with Repoussé Open a 2D image. Select the layer or object on the canvas you want to convert into a repoussé 3D object. Select the 3D panel. Click the Source list arrow, and then select a source option: Selected Layer(s), Work Path, or Current Selection. Click the 3D Repoussé Object option. Click the Create button. 6 5 4 3 2 1 3 2 4 5 6 Did You Know? You can export a 3D layer to a 3D file. The supported 3D formats are Collada DAE, Wavefront/OBJ, U3D, and Google Earth. Select the 3D layer in the Layers panel, click the 3D menu, click Export 3D Layer, select a 3D file format, and then click OK. You can save a 3D file. If you want to preserve 3D model position, lighting, render mode, and cross sections, save files with 3D layers in PSD, PSB, TIFF, or PDF using the Save As command on the File menu. From the Library of Wow! eBook ptg Chapter 20 Extending Photoshop 495 Specify any of the following 3D options: ◆ Presets. Choose from the available shape presets, and save your own presets. ◆ Materials. Select a material for the different areas of the 3D model. ◆ Extrude. Select individual attributes for the 3D object, including depth, scale, twist, and texture. You can also set shear and bend options to transform the 3D model. ◆ Inflate. Specify options to inflate the 3D model like a balloon. ◆ Bevel. Specify options to apply a bevel, including slides, height, width, and contour. ◆ Scene Settings. Specify scene settings for lights, view, rendering, and mesh quality. ◆ Internal Constrains. Use the buttons and other options to position, rotate, roll, pan, slide, and scale the 3D model or adjust a selection. Click OK. Use the 3D tools on the toolbox or on the 3D panel or use the Axis Widget to view, position, or scale the 3D model. ◆ Axis Widget. The three colored areas represent the three axes (x, y, z) of the object. 9 8 7 7 8 3D object Did You Know? You can edit repoussé settings. Select the 3D layer in the Layers panel, click the 3D menu, point to Repoussé, and then click Edit In Repoussé (New!). 9 Axis widget From the Library of Wow! eBook . card name 2 From the Library of Wow! eBook ptg Chapter 20 Extending Photoshop 491 Set 3D Options Click the Edit (Win) or Photoshop (Mac) menu, and then point to Preferences. Click 3D (New!). Select. having to render them in another program. Photoshop includes support for three-dimensional files (U3D, 3DS, OBJ, KMZ, and DAE file formats) created by programs like Adobe Acrobat 3D Version. existing 3D file. When you open a 3D file, Photoshop places the 3D model on a separate 3D layer. You can add mul- tiple 3D layers to an image. If your Photoshop document contains one or more 2D