There are some questions about gender relations in Zhihu, such as "What should you pay attention to when watching movies with girls" and "How to prepare for the first room". The premise of answering these questions is to have a girlfriend! The same is true of our online draft. We need a model first.

This model can't be ignored, otherwise all kinds of broken lines will make people dizzy, and it takes enough time to rebuild the model after adjustment in ai or ps. How to make a model without any problems is not discussed here.

1. vector drawing method

Since you want a vector diagram, you have to mention make2d.

This conductor is an old face. It can extract the edge of a 3D model in a specific window and convert it into a 2D curve. It is the best choice to import ai for color filling and line modification and post-docking ps processing, which is worthy of being the most orthodox method of publishing.

Read the meaning of the text at a glance.

Note that the graphics generated by this command will be placed near the origin of world coordinates.

Select the newly created drawing, adjust it to the top view, and then click File-Export Selected Object to output it to any format. Dwg, ai, pdf are all ok.

However, this order is not satisfactory. Maybe the operation time is too long, too many lines may be broken, or some lines may be lost or. . I took it all at once. It is impossible to solve it, and it will not be solved in this life, because this is what the original factory experts have to do. What we can do is to minimize the total number and difficulty of objects that need to be handled in this command.

First, upgrade to rhino6. Make2d was rewritten in rhino6, which greatly improved the efficiency and accuracy. It is the first choice for improving 2d drawings, without explanation.

Secondly, establish a clean and orderly model. Delete, simplify, clean up, and be drastic.

Finally, there are two techniques to improve efficiency and accuracy:

Idealism method:

Only what I see exists, and what I can't see doesn't exist!

Selvisible can only select objects that are visible in the current view, and with isolate, all other objects can be hidden without any influence on the current view.

For example, a model like this

Contains 13000 curves, 1000 surfaces, 1000 multi-surfaces and 2000 extruded objects.

Find a scene like this in it.

Select all +make2d takes 6.79s s.

Selvisible+make2d takes 1.28 seconds.

Selvisible+isolate+make2d, time consuming1.23s.

For some more complex models, the effect is more significant.

Civet cats for princes:

If there are a large number of nurbs surfaces in the model, make2d will be slow. At this time, we can first extract its edges as the ontology of make2d, and then convert all surfaces into grids, which only represent the occlusion relationship. In this way, it can run at a very fast speed with little error.

There are several common commands to extract edges: extractwireframe to extract all lines of a surface, dupfaceborder to extract exposed surface edges, silhouette to extract surface contours in the current view, and dupborder to copy specific edges-these commands basically cover the requirements of boundary lines in make2d.

Step 1: Visible+Isolation

Step 2: Select the border.

Step 3: Select Surface+Grid+Hide.

Step 4: Select All +make2d

2. Bitmap drawing method

Sometimes we don't want to take the line draft and turn it around. We just want to take out a stack of drawings quickly. Then it is definitely more convenient to guide the map directly at this time. Because all the pictures we export are based on the current window and display mode, we should discuss several important display modes before exporting pictures.

Wireframe mode: Use this mode only when other modes are too stuck or you can't see inside.

Coloring mode: the basic display mode, which has the most basic distinction between material and surface fluctuation. The color attribute that an object displays in this mode is called "display color", which can be given by the layer or the parent object.

Polar coordinate mode: simple and rude pure ambient light shading and gray mapping

Rendering mode: it is convenient for adjustment before rendering, and some drawings with low requirements for rendering can also be made.

Ray tracing: rhino's real-time rendering is much more exquisite than the rendering mode, and the overall effect is not satisfactory. After all, we are not serious rendering software, so we are satisfied.

Pen mode: make2d in real time, and solve all problems in one operation. It can be very difficult to display complex models.

Ok, officially enter the part of adjusting the display mode. The first draft is pen mode, which is convenient and concise.

These things are solid surfaces, not curves.

After adjusting the display panel to make the background transparent, the students who received this picture were moved to tears.

With this display mode, I don't think there is any demand for line manuscripts that can't be met.

But I am a poet, and I won't stop until I change beyond recognition, so I have the pattern in the title map.

In fact, it is made by magical changes in rendering mode. Although the artistic model can achieve the same effect, but the model is too big, it will get stuck, and this is the only way to give up (to put it bluntly, there is still no money). The steps are as follows:

1. Enter options, find the display mode, select the rendering mode, and copy.

2. Then click "Restore Default Value", and we will start tuning from 0.

3. The background becomes a single color, and all objects use a single color. These two colors use the same color. I set it to 25 1, 235,2 1 0, adjusted the line width of the surface edge to1,and changed the lighting mode to no lighting.

4. Open the object curve option and set all curves to use a single color184,27, 17.

5. Open the Object-Surface option, and set the surface edge and exposed edge to use a single color, namely 1 84,27, 17 and 255,128,90, respectively, and set the line width to1.

6. Open the Object-Grid option, and set the grid edge and exposed edge to use a single color, namely 1 84,27, 17 and 255,128,90, respectively, and set the line width to1.

7. Finally turn off the shadow

Just select the display mode we just adjusted in the upper left corner of the window!

The effect is as follows:

After the display mode is adjusted, there are several ways to save it as a picture:

1. Save as a pdf, and select "Dot Matrix Output" and "Display Color" to make the background color visible.

However, this method is really a bit. . Strange, but at least in one way.

2. Check the capturetofile, adjust the parameters and export directly.

I used to think that it was the only way to draw pictures. It was quite convenient for small-sized pictures and simple scenes, but more colors would take a lot of time.

3. print, or ctrl+p

Choose to export as a picture format, choose a unit pixel, and enter any number of pixels in length, width and height, which is not stuck at all.

Just increase the resolution, and then add up to make the lines wider, but the picture quality remains the same.

Select "Display Color"

Don't choose hairline for line width, it will appear very narrow in a large resolution picture. According to the picture size adjustment, the line width of 0.25 is more suitable in the case of 4000*3000 pixels.

Turn on the background color in visibility and confirm.

Pro-test is much faster than viewcapturetofile.

If you want to export a line drawing with a transparent background, you need to pay attention to:

If you use viewcapturetofile, you need to check "Transparent Background" and save it in png format. The background setting of the display mode has no effect on this.

If you use printing, you need to set a transparent background in display mode, turn on the background color in visibility and save it in png format.