CAD 3D drawing

Practice more! ! Improve through practice! ! !

Now that you mention it, I realize I haven’t drawn any 3D CAD drawings yet; I need to start working on this area going forward

It’s hardly been used at all, because I think other software has better 3D capabilities than it!

It’s available here; go and take a look. Standard number: GB/T 18112-2000. Standard name: Unified Rules for CAD Drawing in Building Construction, GB/T 18112-2000. Status of the standard: Abolished. Date of implementation: 2000-11-1. Issuing authority: **Quality and Technical Supervision Bureau**. Brief description: This standard specifies the unified rules for drawing in the process of computer-aided design (hereinafter referred to as CAD) for building construction. It mainly includes definitions, 2D mapping, 3D graphics, layers, and file exchange formats. Source: http://www.csres.com/detail/20581.html Download previous page: http://www.csres.com/upload/qy/hb/gc/4841.pdf AutoCAD 2008 Chinese version three-dimensional modeling basic tutorial (1CD) Table of contents AutoCAD three-dimensional learning * Basically follow these steps: Chapter 1 Overview of AutoCAD 3D modeling 1 1.1 Drawing task - drawing the first 3D graphics 1 1.2 The relationship between 3D graphics and 2D graphics 4 1.2.1 Differences between 3D and 2D 4 1.2.2 Similarities between 3D and 2D 5 1.3 Commonly used 3D modeling terms 5 1.3.1 Model 5 1.3.2 Wireframe model 5 1.3.3 Surface model 5 1.3.4 Solid model 6 1.3.5 Rendering 6 1.4 Advantages of three-dimensional modeling 6 1.5 AutoCAD 2008’s outstanding three-dimensional modeling functions 7 1.6 Learning * AutoCAD three-dimensional modeling method 7 1.7 Summary 8 1.8　 * Question 8 Chapter 2 Basic knowledge of three-dimensional drawing 9 2.1 Coordinate system 9 2.1.1 Cartesian coordinate system 9 2.1.2 Cylindrical coordinate system 10 2.1.3 Spherical coordinate system 10 2.2 World coordinate system (WCS) and user coordinate system (UCS) 10 2.2.1 Drawing task - establishing user coordinate system 10 2.2.2 World coordinate system 12 2.2.3 User coordinate system and its management 13 2.3 Absolute coordinates and relative coordinates 16 2.3.1 Drawing task - drawing cuboid 16 2.3.2 Absolute coordinates 16 2.3.3 Relative coordinates 16 2.4 View and viewport 16 2.4.1 Drawing task - practice * Using View 17 2.4.2 View 19 2.4.3 Drawing Task - Setting Viewport 20 2.4.4 Viewport 21 2.5 Wireframe Model Drawing 22 2.6 Summary 25 2.7　 * Question 26 Chapter 3 Methods of observing three-dimensional models 27 3.1 Setting the observation viewpoint 27 3.1.1 Drawing task - setting the observation viewpoint 27 3.1.2 DDVPOINT command 29 3.1.3 VPOINT command 30 3.2 Three-dimensional dynamic observation 31 3.2.1 Three-dimensional translation and three-dimensional zoom 31 3.2.2 Free dynamic observation 31 3.2.3 Continuous dynamic observation 32 3.2.4 Rotation 32 3.2.5 Adjusting the viewing distance 33 3.2.6 Adjusting the three-dimensional clipping plane 33 3.3 Perspective 34 3.3.1 Drawing task - observing perspective 34 3.3.2 Establishing perspective 35 3.4 Visual style of three-dimensional graphics 36 3.5 Quickly switch to xy plane view 38 3.6 Summary 40 3.7　 * Question 40 Chapter 4 Creating three-dimensional entities 41 4.1 Drawing task - Drawing offices and chairs 41 4.2 Drawing basic entities 49 4.2.1 Drawing cuboids 49 4.2.2 Drawing spheres 50 4.2.3 Drawing cylinders 52 4.2.4 Drawing cones 52 4.2.5 Drawing wedges 53 4.2.6 Drawing torus 54 4.2.7 Drawing polysegments 55 4.2.8 Drawing spirals 56 4.3 Using extrusion to create entities 57 4.4 Using rotation to create entities 60 4.5 Properties of entities 61 4.6 Summary 63 4.7　 * Question 63 Chapter 5 Editing three-dimensional objects 65 5.1 Editing the edges of a solid 65 5.1.1 Drawing task - copying and coloring the top edge of the part 65 5.1.2 Copying the edge 66 5.1.3 Shading the edge 66 5.2 Editing the face of the solid 67 5.2.1 Extrude the face 67 5.2.2 Move the face 68 5.2.3 Offset the face 70 5.2.4 Delete face 71 5.2.5 Rotate face 72 5.2.6 Incline face 73 5.2.7 Copy face 74 5.2.8 Shaded face 75 5.3 Edit solid 76 5.3.1 Imprint 76 5.3.2 Split 77 5.3.3 Shell 77 5.3.4 Check/Select 78 5.4 Summary 79 5.5　 * Question 79 Chapter 6 Drawing complex solid modeling 81 6.1 Drawing task - drawing part drawings 81 6.2 General methods of three-dimensional solid modeling 86 6.2.1 Three-dimensional operation of objects 87 6.2.2 Application of two-dimensional editing commands in three dimensions 87 6.2.3 Three-dimensional array (3DARRAY) 91 6.2.4 Three-dimensional mirror (MIRROR3D) 93 6.2.5 Three-dimensional rotation one (ROTATE3D) 94 6.2.6 Three-dimensional rotation two (3DROTATE) 95 6.2.7 Three-dimensional alignment (ALIGN and 3DALIGN) 96 6.2.8 Three-dimensional fillet (FILLET) 99 6.2.9 Three-dimensional chamfer (CHAMFER) 100 6.3 Cutting solids, thickening, sections 102 6.3.1 Cutting solids (SLICE) 102 6.3.2 Thickening (THICKEN) 103 6.3.3 Sectional three-dimensional solids 103 6.4 Boolean operations 104 6.4.1 Union (UNION) 104 6.4.2 Subtraction (SUBSTRACT) 105 6.4.3 Intersection (INTERSECT) 106 6.5 Summary 106 6.6　 * Question 107 Chapter 7 Drawing a three-dimensional surface model 109 7.1 Drawing a basic surface 109 7.1.1 Creating a cuboid surface 109 7.1.2 Creating a wedge surface 110 7.1.3 Creating a pyramid surface 111 7.1.4 Creating a conical surface 111 7.1.5 Creating a spherical surface 112 7.1.6 Creating an upper or lower hemisphere 113 7.1.7 Create a torus 114 7.2 Create a mesh 114 7.3 Draw a special mesh 116 7.3.1 Draw a rotating mesh 116 7.3.2 Draw a translation mesh 117 7.3.3 Draw a ruled mesh (RULESURF) 118 7.3.4 Draw a boundary mesh (EDGESURE) 119 7.4 General methods of masking and surface modeling 120 7.4.1 Masking practice * 　120 7.4.2 Surface modeling practice * 　122 7.5 Summary130 7.6　 * Question 131 Chapter 8 Annotation of three-dimensional graphics 133 8.1 Drawing task - annotation of offices and chairs 133 8.2 Introduction to three-dimensional annotation 144 8.3 Establishment of dimension styles 145 8.3.1 Basic rules 145 8.3.2 Composition of dimensions 145 8.3.3 Fonts 146 8.4 Three-dimensional graphic annotation examples 146 8.5 Modification of dimensioning 152 8.6 Summary 155 8.7　 * Question 155 Chapter 9 Comprehensive examples of complex three-dimensional modeling drawing 157 9.1 Three-dimensional surface modeling 157 9.1.1 Drawing task - drawing parts 157 9.1.2 Drawing task - drawing a set of tea sets 164 9.2 Three-dimensional solid modeling 166 9.2.1 Drawing task - drawing parts 166 9.2.2 Drawing task - drawing residential buildings 170 9.3 Methods to improve drawing efficiency 174 9.3.1 Using blocks 174 9.3.2 Applying entity attributes 176 9.4 Summary 176 9.5　 * Question 177 Chapter 10 Rendering of three-dimensional graphics 179 10.1 Point light source 179 10.2 Spotlight 180 10.3 Parallel light 182 10.3.1 Creating directional light sources 182 10.3.2 Shadow types and their rendering effects 184 10.4 Attaching materials 187 10.5 Using material maps 188 10.6 Comprehensive practice * ——Rendering of interior renderings 190 10.7 Summary 191 10.8　 * Question 192 Chapter 11 Generating 2D Views from 3D Models 193 11.1 AutoCAD Workspace 193 11.1.1 Model Space 193 11.1.2 Layout 194 11.1.3 3D Modeling Workspace 194 11.1.4 2D Sketches and Annotations 195 11.2 Generating Basic Views 196 11.2.1 Creating the Main View 196 11.2.2 Generate other views 197 11.3 Create a true two-dimensional graphics 200 11.3.1 Set up the graphics 200 11.3.2 Set the outline 201 11.3.3 Further improve the graphics 202 11.3.4 Set the zoom ratio 203 11.3.5 Align the view 204 11.4 Dimension 205 11.4.1 Annotating in the model space of the layout 205 11.4.2 Annotating in the paper space of the layout 205 11.5 Using the layout wizard 208 11.6 Summary 209 11.7　 * Question 210 Chapter 12 Printout of graphics 211 12.1 Printing device 211 12.1.1 Plotter manager 211 12.1.2 Add printing device through [Add Plotter Wizard] 213 12.2 Print style 216 12.2.1 Print style manager 216 12.2.2 Add print style table through wizard 217 12.3 Page setup 219 12.3.1 Related printing equipment content 220 12.3.2 Related printing layout setting content 220 12.4 Saving print settings 222 12.5 Graphic printing example 223 12.5.1 Printing to drawings 223 12.5.2 Printing of three-dimensional graphics 224 12.5.3 Publishing of graphics 226 12.6 Summary 228 12.7　 * Question 228

I agree with the person above; to create good 3D graphics, in addition to technical skills, one also needs a strong sense of spatial imagination!