What is 3D Modeling?

"3D modeling" is generally speaking of using a three-dimensional production software to build a model with three-dimensional data through a virtual three-dimensional space. 3D modeling can be roughly divided into: NURBS and polygon meshes.

3D modeling

"3D

3D: short for 3DS max, 3DS max is the most well-known in the world

1. Use a computer to describe the behavior of a system. E.g,

There are many popular 3D modeling software in the field of industrial design. It can be roughly divided into two categories, CAID and CAD.

The CAID class probably includes alias studio,

(1) Preliminary preparation. Before drawing, first make sure that the unit used is millimeter, and then use Shift + I to import CAD into 3DMAX. Move the imported CAD graphics to world coordinates (0,0,0), and then select all the imported lines to group them into a basemap and freeze the basemap. Then load other CAD planes. Turn on 2D snapping and set the snapping point to vertical and midpoint, which facilitates early drawing operations. Put the outer contours of the imported layers on top of each other, and then move the upper layer along the Y axis in the TOP map as a reference.

Similarly, import the elevations of the building, group them so that their outer contour lines align with the out-of-plane contours, and then freeze them for reference. Rotate the elevation 90 ° along the X axis. If you find that you cannot capture a frozen point, be sure to check the capture settings.

(2) Generate entities. With the help of the basemap, it is extremely easy to pull the wall on top. At this time, it is important to ensure that the newly built wall has the least surface and the calculation amount is as small as possible. It is best to recreate the shape of the flat wall with lines, so that the lines drawn are the whole. At this time, pay attention to tick off the check mark after "StartNewShape", the drawn line may be integrated. Then add the "Extrude" command to the wall line, and set the width of the exterior wall of the building to 370mm or 240mm. At the same time, in order to save the surface, the window frame of the facade is also treated as a whole. At this time, give the strong body a material.

There are many small components in the 3D modeling process. Be sure to give it a texture even after each model is built. At the same time, each material should be marked with a name on the shader. If further adjustments are needed in the future, You can select the shader, select the objects with the same material, and use Alt + W to edit the objects in the separate window. After confirming the modification, add the editablemesh command to the objects using the same material, and perform the collapse processing for the same object. This can reduce the calculation of the surface and the line as much as possible and improve the efficiency. But the collapse command is irreversible, so be careful when using it.

(3) Camera. After completing the collapse, you can add a target spotlight to the object. Press C in any window to switch it to the camera window. Then adjust the height of the camera and the target point. Generally, you can move it to the Y direction by 1600mm in the front view. At this time, for easy observation, the window layout is usually adjusted. I generally choose the left and right tiling method in ViewportConfiguration / layout, which can ensure that you have the largest window and the most practical operation interface. ^[1]

3Ds MAX

3D Studio Max, often referred to as

Building blocks (divide an object into many small pieces and make them together)

Grid editing

NURBS modeling

Mipi (My personal name is to use 2D step to line, and then use the modify command to make the line at 4 points become positive)

The form of the Internet has always been in 2D mode, but with the continuous improvement of 3D technology, in the next 5 years, more and more Internet applications will be presented to users in 3D, including online video, E-reading, online games, virtual communities, e-commerce, distance education and more. Even for the tourism industry, the 3D Internet can play a driving role. Some world famous places, sculptures and antiques will be used on the Internet to allow users to experience in 3D. The real shock of this experience is far more than the 2D environment.

Take the rapid development of e-commerce as an example. Massive products need to be displayed on the Internet. Specialized, personalized, and authentic product display is particularly important. However, due to the constraints of 3D model production costs, these requirements can only be temporarily two-dimensional. The photos are used for satisfaction, which causes the information about the products or objects passed to consumers to be incomplete, detailed, and lifelike, which reduces consumers' desire to buy and accuracy. The 3D product display technology can interactively display products in a three-dimensional manner on a web page. Consumers can view product characteristics in an all-round way and intuitively understand product information. The effect is almost the same as consumers directly facing products. Many manufacturers have adopted pseudo 3D effects (sequence photo rotation) to temporarily replace the display of 3D models. It can be seen that the future market desires for 3D modeling technology.

1. Before 3D modeling, create an empty file. Each building starts with this file.

(1) Unit is set to millimeter (MM)-both positions are set.

(2) The format is PAL. Adjust the appropriate key frame length.

(3) Open the rendering panel and set the filter to Catmull-Rom.

(4) The rendering size is 720 * 576 or 720 * 404, the high-definition picture is 1920 * 1080, and the ratio is 1.067.

(5) Set Maximun Depth under RAY Depth Control to 1 and only enable Enable. The rest of the options are turned off (ray tracing in the shader during the production process, select the second Reflectio under Trace Mode).

(6) Divide the materials involved in the construction drawing and establish multiple texture balls, each of which is named according to the actual situation, such as glass.

2. In the 3D modeling technique ^[2] , the terrain, perspective, and individual close-up shots are established.

(1) These all start with an empty file.

(2) Unit is set to meter (M)-both positions are set.

(3) The material is not set. It is set according to the production object. The terrain and the distant view are finally generated into a composite file. The individual lens is determined by the lens itself and has a clear name.

(4) Load the CAD terrain, the center is located in the axis position in the MAX space, and the Z axis is unified with the horizon height to 0.

(5) The system is PAL, and the appropriate key length is adjusted.

(6) Open the rendering panel and set the filter to Catmull-Rom.

(7) The rendering size is 720 * 576 or 720 * 404, the high-definition picture is 1920 * 1080, and the ratio is 1.067.

(8) Set Maximun Depth under RAY Depth Control to 2 and Enable to enable the rest of the options to turn off (ray tracing in the mass ball during the production process, select the second Reflectio under Trace Mode).