在本教程中，您將看到如何開始可視化并創(chuàng)建逼真的3D經(jīng)典車。 在接下來的幾個(gè)問題中，我們將從第一個(gè)阻塞階段到最終渲染的汽車建模過程。在這些教程中，我們將使用Maya來建模汽車，V-Ray的可視化和Photoshop來編輯圖像。 盡管如此，您使用的軟件實(shí)際上并不重要，因?yàn)橹攸c(diǎn)將放在創(chuàng)建模型背后的原則上。

我們將創(chuàng)建1939年的Delage D8 120 CabrioletChapron，但使用本教程作為基礎(chǔ)，您將能夠創(chuàng)建任何車輛。 我們也將使用多邊形。 我們將從一個(gè)簡單的框中創(chuàng)建幾何，并且會(huì)反復(fù)平滑，直到我們獲得所需的細(xì)節(jié)水平，最終得到高度詳細(xì)的模型。

In this tutorial, you will discover how tobegin to visualize and create a photorealistic 3D classic car. Over the nextfew issues, we will follow the process of modeling a car from its firstblocking stages, to the final render.During these tutorials we will use Maya forthe modeling of the car, V-Ray for its visualization and Photoshop to edit theimage. Despite this, it actually doesn't matter what software you use, as theemphasis will be on the principles behind the creation of a model.

We will create the 1939 Delage D8 120Cabriolet Chapron - but using this tutorial as a base, you will be able tocreate any vehicle. We will also work with polygons. We will create geometryfrom a simple box, and will smooth it repeatedly until we obtain the desiredlevel of detail, ultimately ending up with a highly detailed model.

Step :01 References

First, we need a photo of the car. Shots onall sides of the vehicle are obligatory, so first let's examine the properselection of references:

1. It is preferable that you have a photoof the car on all sides. We need to see the car's shape with all the details.If you don't have enough photos or you don't have a large shot with particulardetails, you need to take a pencil and draw these details in to understand theshapes.

2. It is good to know the car's sizes too:its length, width, height and wheelbase. We need it to better observe andrecreate the proportions.

3. A blueprint is not all that necessaryfor the creation of the car. Very often they are incorrect, though they canhelp during those first stages in the creation of the model, when we need tobuild the main shape quickly and correctly. If you don't have a blueprint, it'snot a problem, as photos and the car's sizes will be enough.

一、參考文獻(xiàn)

首先，我們需要一張汽車的照片。 首先要檢查車輛的各個(gè)方面，以便正確選擇參考文獻(xiàn)：

你最好有車子的所有照片。 我們需要看到汽車的形狀與所有的細(xì)節(jié)。 如果您沒有足夠的照片，或者您沒有拍攝特別細(xì)節(jié)的照片，則需要用鉛筆繪制這些細(xì)節(jié)以了解形狀。

了解汽車的尺寸也很重要：它的長度，寬度，高度和軸距。我們需要它來更好地觀察和重建比例。

汽車的制作并不是一個(gè)藍(lán)圖。 很多時(shí)候他們是錯(cuò)誤的，雖然他們可以幫助在模型的創(chuàng)建的第一階段，當(dāng)我們需要快速，正確地建立主要形狀。如果你沒有藍(lán)圖，這不是問題，因?yàn)橛姓掌推嚨某叽缇蛪蛄恕?/p>

Step 02: Problems with references

There can be many problems with referenceimages. The most common mistakes during the work with references are asfollows:

If you have a photo with the side view ofthe car, you may wish to load it into the side projection and start to create achassis with this photo. This will ultimately end up being incorrect as it willlead to distortion of the overall shape of the model. The point is that thephoto has a perspective which will cause a strong distortion. If you don't havea blueprint with a side view, it is better to simply trust your eyes.

Another problem can be caused by using photoswithout taking the camera's characteristics into account. Usually we use up tofive photos to create the accurate shape and there is potential for mistakeswhen setting the scene's camera differently to the settings of the camera thatwas used for taking the photo. If you made the references yourself, you can seethe settings of your camera by just right-clicking on the filename and choosingProperties > Details. If you don't know the settings of your photo, you needto set the camera manually. It takes time, but it helps a lot in comparing yourphoto and model.

Regardless of our approach in the creationof conditions for modeling, the chief thing is not to make the mistakesdescribed above. Of course, it is possible to create a car without any photosor blueprints, but the outcome will depend on how well your eye is developed.If you don't trust your sense of proportions or you want to be absolutely sure,you need to use some auxiliary pictures. The chief thing is not to confusephotos with blueprints and not to use them as replacements for one-another.

二、引用問題

參考圖像可能有很多問題。參考文獻(xiàn)中最常見的錯(cuò)誤如下：

如果您有一張照片的側(cè)視圖，您可能希望將其加載到側(cè)面投影，并開始使用此照片創(chuàng)建一個(gè)機(jī)箱。這將最終不正確，因?yàn)樗鼘?dǎo)致模型的整體形狀的扭曲。關(guān)鍵是照片有一個(gè)會(huì)導(dǎo)致強(qiáng)烈扭曲的視角。如果你沒有一個(gè)側(cè)面的藍(lán)圖，最好是相信你的眼睛。

使用照片而不考慮相機(jī)的特性可能會(huì)導(dǎo)致另一個(gè)問題。通常我們最多可以使用五張照片來創(chuàng)建準(zhǔn)確的形狀，并且當(dāng)將場景的照相機(jī)與用于拍攝照片的相機(jī)的設(shè)置不同時(shí)，可能會(huì)出現(xiàn)錯(cuò)誤。如果您自己做了參考，可以通過右鍵單擊文件名并選擇“屬性”>“詳細(xì)信息”，來查看相機(jī)的設(shè)置。如果您不了解照片的設(shè)置，則需要手動(dòng)設(shè)置相機(jī)。它需要時(shí)間，但它有助于比較你的照片和模型。

不管我們在創(chuàng)造條件建模時(shí)的做法，首要的是不要犯錯(cuò)誤。當(dāng)然，有可能創(chuàng)建沒有任何照片或藍(lán)圖的汽車，但結(jié)果將取決于你的眼睛的發(fā)展程度。如果您不信任您的比例感，或者您想要絕對確定，則需要使用一些輔助圖片。主要的是不要將照片與藍(lán)圖混淆在一起，而不能將它們用作另一種替代品。

Step 03: Blueprints

If you load a blueprint, do it through theImage Plane and don't forget to choose Looking Through Camera in the ImagePlane Attributes.

三、藍(lán)圖

如果您加載藍(lán)圖，請通過圖像平面進(jìn)行操作，不要忘記在圖像平面屬性中選擇“透視相機(jī)”。

Step 04: Blocking

As for the present model, we have only onephoto which makes our task much more interesting. The car is exclusive, sothere aren't as many photos as we'd like. But we have all that is necessary.

When working with similar cars, the chiefthing is to take the uniqueness of these cars into consideration. Multiple carmodels are frequently made on the same basis, so you can find photos orblueprints of a very similar car to work on (remember to recognize and applythe differences in detail though).

So, beginning the process of creation ofthe model, we create a simple box.

四、封鎖

至于現(xiàn)在的模式，我們只有一張照片，使我們的任務(wù)更有趣。這輛車是獨(dú)家的。

在使用類似的汽車時(shí)，主要是考慮這些車的獨(dú)特性。 多個(gè)車型經(jīng)常在同一基礎(chǔ)上進(jìn)行，所以您可以找到一輛非常相似的車的照片或藍(lán)圖來工作（請記住盡可能地識別和應(yīng)用差異）。

所以，開始創(chuàng)建模型的過程，我們創(chuàng)建一個(gè)簡單的框。

Step 05: Settings

It is important to place this box in thecenter of the interface co-ordinates. Also, this box must have the overalldimensions of the car. For example, if you know the car's length, width, andheight, you should set them as the dimensions of that box.

The next step is to divide the box exactlyin half. We need to cut exactly in the center of the co-ordinates. If the boxis displaced, you need to align it along the grid by using the snapkey X. Next,delete one half and copy the existing object with the Instance Value,reflecting the geometry. Set a value of -1 in the corresponding cell of theDuplicate Special Options, to reflect the block.

五、設(shè)置

將此框放置在界面坐標(biāo)的中心很重要。 此外，這個(gè)盒子必須具有汽車的整體尺寸。 例如，如果您知道汽車的長度，寬度和高度，則應(yīng)將其設(shè)置為該框的尺寸。

下一步是將框分成兩半。 我們需要在坐標(biāo)的中心精確地切割。 如果框被移動(dòng)，則需要使用快捷鍵X將其與柵格對齊。接下來，刪除一半，并使用實(shí)例值復(fù)制現(xiàn)有對象，反映幾何。在“重復(fù)特殊選項(xiàng)”的相應(yīng)單元格中設(shè)置值-1，以反映該塊。

Step 06: Adding polygons

We have two halves and each is part of ourfuture car. To complicate the shape, we need to add polygons. We can do thisnow, remembering that the chief thing is to divide each edge exactly in half.

We could also have initially created a boxwith the required number of edges (the number of edges may have been differentthough).

六、添加多邊形

我們有兩半，每個(gè)都是我們未來車的一部分。 要使形狀復(fù)雜化，我們需要添加多邊形。 我們現(xiàn)在可以這樣做，記住首要的是將每個(gè)邊緣分成兩半。

我們也可以最初創(chuàng)建一個(gè)具有所需數(shù)量邊的框（盡管邊的數(shù)量可能有所不同）。

Step 07: Bending the geometry

Next, we begin to work with the shape.First, we will bend the geometry a little.

七、彎曲幾何

接下來，我們開始使用形狀。 首先，我們將彎曲幾何。

Step 08: More shapes

It is very important to understand that inthis case, the shape of the chassis will consist of three parts; a basis andtwo front fenders. So initially, we will leave a straight line on the sides andwill bend the geometry only at the center. After a simple manipulation, we cancreate the shape seen here.

八、更多的形狀

非常重要的是要了解，在這種情況下，底盤的形狀將由三部分組成：一個(gè)基礎(chǔ)和兩個(gè)前擋泥板。 所以最初，我們將在兩側(cè)留下一條直線，只能在中心彎曲幾何。經(jīng)過簡單的操縱，我們可以創(chuàng)造出這里所看到的形狀。

Step 09: Refining the shape

Now we can safely leave the pentagons andtriangles behind. At this stage, our goal is to give our geometry a better car shape.We delineate the chassis and fenders. To make our work easier later, we need amore precise shape. At this moment, the topology does not matter so we canleave the unmarked areas, but the edges must be aligned. At this stage, we showthe chassis' main elements. Also, we can delete the bottom completely to makeour work easier.

九、精煉形狀

現(xiàn)在我們可以安全地離開五邊形和三角形。 在這個(gè)階段，我們的目標(biāo)是讓我們的幾何形狀更好。 我們勾勒出底盤和擋泥板。 為了使我們的工作更容易，我們需要一個(gè)更精確的形狀。此時(shí)，拓?fù)浣Y(jié)構(gòu)并不重要，所以我們可以離開未標(biāo)記的區(qū)域，但邊緣必須對齊。 在這個(gè)階段，我們展示了底盤的主要元素。 此外，我們可以完全刪除底部，使我們的工作更容易。

Step 10: Refining angles

When we make an object that looks like acar's chassis, we need to regulate the many angles according to the detailsshown in the original photo. We can always use primitives for this task.

十、精煉角度

當(dāng)我們制作一個(gè)看起來像汽車底盤的物體時(shí)，我們需要根據(jù)原始照片中顯示的細(xì)節(jié)調(diào)節(jié)多個(gè)角度。我們可以隨時(shí)使用原語進(jìn)行此任務(wù)。

Step 11: Beveling

Now we have the basic shapes down for thecreation of the car, we can begin to bevel the edges. Don't be in a hurry withthe detail.

十一、倒角

現(xiàn)在我們已經(jīng)有了創(chuàng)造汽車的基本形狀，我們可以開始傾斜邊緣。不要急于細(xì)節(jié)。

Step 12: More refinements

Despite the fact that we just outlined thecar's chassis, now it is very important to feel the shape of the car and makecorrections to the model according to the shapes in the photo. The chief thingis to see our halved sections completed. Imagine that you have a finished carand then complete any absent parts mentally.

十二、更多細(xì)化

盡管事實(shí)上我們剛剛概述了汽車的底盤，現(xiàn)在感覺汽車的形狀和根據(jù)照片中的形狀進(jìn)行修正是非常重要的。主要的是看到我們的半部分完成了。 想象你有一輛成品車，然后精神上完成任何缺勤部分。

Step 13: Smoothing

When we correct the shape, it's importantto remove the triangles and pentagons to make the shape smoother. We just needto choose any of the halves and set the Exponential Smooth Type value to 1.

You should obtain something similar tothis.

十三、平滑

當(dāng)我們修正形狀時(shí)，重要的是去除三角形和五邊形以使形狀更平滑。我們只需要選擇任意一半，并將“指數(shù)平滑類型”值設(shè)置為1。你應(yīng)該得到類似的東西。

Step 14: Trim the mesh

Now we have many more polygons than we beganwith. We need to trim the mesh and set the Harden Edge value to Normal. Now youshould be left with a simple exterior.

十四、修剪網(wǎng)格

現(xiàn)在我們有更多的多邊形比我們開始的時(shí)候。 我們需要修剪網(wǎng)格并將硬化邊緣值設(shè)置為“正常”。 現(xiàn)在你應(yīng)該留下一個(gè)簡單的外觀。

Step 15: Corrections

In this step, we need to make manycorrections at once:

1. Make a cylinder and place it where thereshould be a wheel arch. Cut through the mesh and align all the tops of thecylinders.

2. Simplify the bonnet and make it narrowertowards the grill.

3. Set the edge at the place where thecenter of the wheel should be and watch out for the neighboring edges - they donot need to be joined together.

4. Clear the mesh from the side - this isnot obligatory, but simple geometry is always better. Also remove any unnecessarypolygons, leaving only the most necessary ones. We can always add new polygonslater if we need to.

5. Remove some polygons from the interior.Also work over the trunk, lowering the rear fender according to the photo.

At this point, it is important to form aprecise mesh. We don't need an ideal mesh; we need a basis for further work, sotry to make your mesh smoother and more logical. Also it is important to markall principal places on the chassis by one or two edges.

It is no problem if you accidentally removeany extra edges. The chief thing is not to break the formed structure and toobserve order in the mesh. If the edges are placed chaotically and withoutobservance of distance, you will likely have a problem with the shape. Youshould focus on having a well arranged mesh, even if you remove severalsections later on.

十五、更正

在這一步中，我們需要一次進(jìn)行許多更正：

1.制作一個(gè)圓柱體，將其放在應(yīng)該有一個(gè)輪拱的地方。切割網(wǎng)格并對齊圓柱體的所有頂部。

2.簡化發(fā)動(dòng)機(jī)罩，使其更窄。

3.將邊緣設(shè)置在車輪中心位置，注意相鄰邊緣 - 不需要連接在一起。

4.從側(cè)面清除網(wǎng)格 - 這不是強(qiáng)制性的，但簡單的幾何總是更好。還要?jiǎng)h除任何不必要的多邊形，只留下最需要的多邊形。如果我們需要，我們可以隨時(shí)添加新的多邊形。

5.從內(nèi)部拆下一些多邊形。也可以在樹干上工作，根據(jù)照片降下后擋泥板。

在這一點(diǎn)上，重要的是形成一個(gè)精確的網(wǎng)格。我們不需要理想的網(wǎng)格;我們需要進(jìn)一步工作的基礎(chǔ)，所以嘗試使您的網(wǎng)格更平滑和更合乎邏輯。此外，重要的是將機(jī)箱上的所有主要位置標(biāo)記為一個(gè)或兩個(gè)邊緣。

如果您不小心刪除任何額外的邊緣，這是沒有問題的。主要的是不要打破形成的結(jié)構(gòu)，并且在網(wǎng)格中觀察秩序。如果邊緣混亂放置，而不遵守距離，則可能會(huì)導(dǎo)致形狀問題。您應(yīng)該專注于布置好網(wǎng)格，即使稍后刪除多個(gè)部分。

 

Step 16: Complicating geometry

Next, we add some Bevels and complicate thegeometry a bit where it is needed. We need to emphasize the chassis' principal lines.For now, you will need to make a single edge, so we can form a specific mesharound that edge later.

十六、復(fù)雜幾何

接下來，我們添加一些斜面，并使幾何在需要的地方復(fù)雜化。我們需要強(qiáng)調(diào)底盤的主要線路。 現(xiàn)在，你需要做一個(gè)單一的邊緣，所以我們可以在這個(gè)邊緣之后形成一個(gè)特定的網(wǎng)格。

Step 17: Check the mesh

Remember we will smooth the mesh later onto obtain the required accuracy. At this point, that mesh should contain as fewtriangles and polygons as possible.

十七、檢查網(wǎng)格

記住我們將在以后平滑網(wǎng)格以獲得所需的準(zhǔn)確性。 在這一點(diǎn)上，該網(wǎng)格應(yīng)該包含盡可能少的三角形和多邊形。

Step 18: The base model

Now we have a basic model for future work.At this stage, we have full freedom to edit any dubious areas and correct theproportions. Don't forget to check with reference photos and look at the modelfrom different sides.

Make sure you rotate your model often; lookat the model from different sides and try to imagine the finished car. Also,try not to get lost in contemplation of your reference photos. Switch betweenphotos faster and try to catch the whole shape: it can make further workeasier. Finally, don't be in a hurry with details. First, you need to create abasic shape and then move from the general to the particular.

十八、基本模型

現(xiàn)在我們有一個(gè)未來工作的基本模式。 在這個(gè)階段，我們有充分的自由來編輯任何可疑的領(lǐng)域并糾正比例。 不要忘記查看參考照片，并從不同方面看模型。

確保經(jīng)常旋轉(zhuǎn)你的模型; 看看不同方面的模特，試著想象成品車。 另外，盡量不要迷失在考慮你的參考照片。 切換照片更快，并嘗試抓住整個(gè)形狀：它可以使更多的工作更容易。 最后，不要急于細(xì)節(jié)。首先，您需要?jiǎng)?chuàng)建一個(gè)基本的形狀，然后從一般到特定的形狀。

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