Google SketchUp and SketchUp Pro7 Bible Part3 Modeling Basics.pdf
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1、Murdock The book you need to succeed! Create professional-quality drawings and models in SketchUp Why scribble on a notepad when, with a few computer strokes, you can create 3D drawings in SketchUp and capture your best ideas in software? With the step-by-step instruction in this in-depth guide, you
2、 ll soon be modeling your ideas like a pro, from designing buildings to drawing room layouts or planning landscaping. Whether you re brainstorming ideas, preparing a formal presentation, or finalizing a project to upload to Google Earth, this is the SketchUp book you need to succeed. Value-Packed CD
3、-ROM Once placed, the texture is frozen to the selected face Spine: 1.10“ Jump into SketchUp by designing a windmill right off the bat Explore the user interface and learn SketchUp tools and shortcuts Master objects, drawing, modeling, effects, and the art of modification Combine 3D models with 2D i
4、mages using the LayOut tool Browse 3D Warehouse for components and models Export your SketchUp projects to Google Earth Extend functionality with Ruby scripting and plug-ins What s on the CD-ROM? Check out the CD for a trial version of SketchUp 7 Pro, as well as your own free copy of Google SketchUp
5、 7. Youll also find most of the 3D models from the book, so you can follow the tutorials and gain hands-on practice in the techniques. System Requirements: See the CD appendix for details and complete system requirements. Kelly L. Murdock CD-ROM Included! Free version of Google SketchUp 7 Trial vers
6、ion of Google SketchUp Pro 7 Chapter example files from the book Shelving Category: COMPUTERS / Computer Graphics and Image Processing Reader Level: Beginning to Advanced $39.99 USA $47.99 Canada Master SketchUp Pro 7s tools and features Design a building and put it on Google Earth Capture your bes
7、t ideas in SketchUp Google SketchUp and SketchUp Pro 7 Google SketchUp and SketchUp Pro 7 Rotate the camera with the Look Around tool View layers by color Google SketchUp and SketchUp Pro 7 Bible Google SketchUp and SketchUp Pro 7 Bible Kelly L. Murdock Modeling Basics IN THIS PART Chapter 9 Drawing
8、 in SketchUp Chapter 10 Modifying Objects Chapter 11 Adding Text Chapter 12 Using the Construction Tools Chapter 13 Matching a Background Photo Chapter 14 Working with TIN Surfaces 165 S ketchUp is designed to let you turn simple sketches into 3-D scenes. This chapter presents the tools used to crea
9、te many of the simple basic elements that make up a project. SketchUp includes a number of tools (which happen to be called drawing tools) that help you sketch perfect circles, arcs, and straight lines. Using these tools, your sketches can become drawings. Understanding the Drawing Axes The key to w
10、orking in 3-D is to keep track of the axes. The standard axes are located at the origin of the drawing area, as shown in Figure 9.1. These axes are color coordinated with red denoting the X-axis, green marking the Y-axis, and blue indicating the Z-axis. If you find that the axes are in the way when
11、you print the model, you can turn them off by choosing View Axes. This is a toggle command that sim- ply hides and unhides the axes. IN THIS CHAPTER Understanding the drawing axes Drawing lines and faces Drawing arcs Drawing freehand and erasing curves Drawing shapes Setting drawing preferences Draw
12、ing in SketchUp 166 Modeling BasicsPart III FIGURE 9.1 The default axes help keep the correct orientation. Z-axisY-axis X-axis Drawing Lines and Faces Drawing is accomplished by dragging in the drawing area with one of the various drawing tools. The simplest drawing tool is the Line tool, which look
13、s like a pencil in the Getting Started toolbar. You can select this tool from the Draw Line menu command (L) or by selecting it from the Getting Started Toolbar. You can draw straight lines from point to point with this tool. When dragging with the Line tool, the line turns red, green, or blue when
14、the line is aligned with one of the axes. This makes it easy to sketch and connect lines together to form faces. Three or more lines that are connected and that exist in the same plane form a face. When a face is created, it is automatically shaded gray, as illustrated by the triangle in Figure 9.2.
15、 167 Drawing in SketchUp9 FIGURE 9.2 A minimum of three edges are required to define a face. CROSS-REFCROSS-REF If you need some help drawing lines, you can set some guidelines using the Tape Measure tool, which is covered in Chapter 12. When drawing a line, the line s length is displayed in the Mea
16、surements Toolbar. If you type a value in the Measurements Toolbar while drawing a line, then a line of that length is drawn. Alternatively, you can type three coordinates in the Measurements Toolbar and a line is drawn from the starting point to the specified coordinate position. Understanding infe
17、rence positions When you drag over the top of objects within the drawing area, you may have noticed that the point located at the tip of the Line tool changes color based on where the mouse cursor is located. These points identify specific locations and are used to help you draw accurately by giving
18、 you a visual clue as to where the cursor is located. This feature is called inference and the key to using inference is to learn what the different colors indicate. SketchUp identifies the following inference points: 168 Modeling BasicsPart III TIPTIP If you hover with the mouse cursor over an infe
19、rence point, a tooltip appears iden- tifying the inference point. n Endpoints: Endpoints appear at each end of a line entity and are identified by a green point. n Midpoints: Midpoints appear directly in the middle of a line entity and are identified by a cyan point. n Intersections: Intersections a
20、ppear where one line entity crosses another line entity and are identified by a black point. n On Edge: On Edge points appear anywhere along the edge of a line entity and are identi- fied by a red point. n On Face: On Face points appear anywhere on the surface of a face entity and are identi- fied b
21、y a blue point. Figure 9.3 shows each of these various inference points along with their tooltips. FIGURE 9.3 Inference points are identified by colored points and tooltips. In addition to specific points, lines can also be lined up using inference. Lines that use inference are displayed as solid co
22、lored lines or as dashed colored lines, depending on the inference type. Tooltips also appear above the various inference lines if you hold the mouse still. Inference can recognize the following lines: n On Red Axis, On Green Axis, On Blue Axis: Lines that are aligned to a specific axis are displaye
23、d in the color of the axis that it is aligned with: red for the X-axis, green for the Y-axis, and blue for the Z-axis. 169 Drawing in SketchUp9 n From Point: If the endpoint of a line is positioned so that it has the same X, Y, or Z-axis value as another point in the scene, then a dashed line connec
24、ting the two points is displayed. n Perpendicular to Edge: When a line is perpendicular to another line, a magenta line is displayed. Perpendicular lines have a 90-degree angle between them. n Parallel to Edge: When a drawn line is parallel to an existing line, the line is also dis- played in magent
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