Name: 胡迪尼並不可怕--第二部分：物品 (Houdini Isn't Scary - Part 2: Objects)
Uploaded: 2025-04-02T09:24:11.000Z
Duration: 25 min 48 s

Welcome back to another WhoDBisnscary tutorial.

This is part two, and this one we're going over objects.

這是第二部分，這部分我們將介紹物體。

程度副詞

So we touched on this in the last tutorial, but we didn't really get in depth.

我們在上一期教程中提到了這一點，但並沒有深入探討。

This tutorial we're going to go over how to create some objects, we're going to go over a couple more nodes, and we're just going to get comfortable with jumping between objects and bringing one object into another to reference it with object mergers, all the while creating something interesting.

在本教程中，我們將學習如何創建一些對象，我們還將學習一些節點，我們將熟悉在對象之間跳轉，並通過對象合併將一個對象引入另一個對象中進行引用，同時創建一些有趣的東西。

We're creating a donut, so let's not waste any more time, let's get straight into it.

我們正在製作一個甜甜圈，所以不要再浪費時間了，直接開始吧。

To begin on creating this donut, of course we're going to need an object.

要開始創建這個甜甜圈，我們當然需要一個對象。

是以，讓我們首先創建一個環。

So go up to your shelf tools and click on torus, press enter to place it at the origin, and we now have this torus.

是以，請打開書架工具，點擊 "環形"，按回車鍵將其置於原點，現在我們就有了這個環形。

Not the best donut so far, but we can make some changes to it.

到目前為止，這還不是最好的甜甜圈，但我們可以對它做一些改動。

So first things first, let's give this a name, so double click on the name of this object and rename it to donut.

首先，先給這個對象起個名字，雙擊這個對象的名字，將其重命名為甜甜圈。

Then we can double click on the actual node to go inside of it and adjust this torus geometry.

然後，我們可以雙擊實際節點，進入其中調整環形幾何體。

So we're going to give it some more rows, we can give this 50 rows and 50 columns, just so that it's smoother.

是以，我們要增加行數，可以增加 50 行和 50 列，這樣會更流暢。

Next we're going to give it some color, so we've done this before, just press tab, type color, and drop down a color node.

接下來，我們要給它添加一些顏色，之前我們已經做過了，只需按下 tab 鍵，輸入顏色，然後下拉一個顏色節點。

Plug your torus geometry into this color node, and then don't forget to set your display flag on your color.

將環形幾何體插入該顏色節點，然後別忘了在顏色上設置顯示標誌。

So now we have our color selected, we can go and give this a healthy golden brown bagel color.

現在我們已經選好了顏色，可以給麵包圈塗上健康的金棕色了。

So now that we have that, let's give it a bit more of an interesting shape.

現在我們有了這個，讓我們給它設計一個更有趣的形狀。

It looks a bit too smooth right now, so we can press tab in our network view and drop down what is known as a mountain node.

現在看起來有點太平滑了，所以我們可以在網絡視圖中按下 tab 鍵，下拉一個所謂的山形節點。

What a mountain node does is it adds a mountain noise to a geometry.

山峰節點的作用是為幾何體添加山峰噪音。

So if we plug our color into our mountain node and then set our display flag on our mountain, you'll notice that we have this deformed donut, and all we have to do is really just drop the height.

是以，如果我們將顏色插入山節點，然後在山上設置顯示標誌，你會發現我們有了這個變形的甜甜圈，我們要做的其實只是降低高度。

So just middle mouse on this height setting, and bring it down to about 0.1.

是以，只需將滑鼠放在高度設置的中間，將其調低到 0.1 左右即可。

As you can see, that just adds a little bit of shape to our donut so that it looks a bit better.

正如你所看到的，這只是給我們的甜甜圈增加了一點形狀，讓它看起來更好看一些。

So now we have our donut, but we want to add some things.

現在我們有了甜甜圈，但還想添加一些東西。

Now a good way to do this would actually be to make a separate icing object.

實際上，一個好的方法是製作一個單獨的結冰對象。

That means we're going to go back up to the object level, create a new object called icing, and then we'll create our icing in there.

這意味著我們要回到對象層，創建一個名為 "結冰 "的新對象，然後在其中創建我們的 "結冰"。

But we may want to bring our donut into our icing object so that we can actually put our icing on our donut.

不過，我們可能想把甜甜圈放入我們的糖霜對象中，這樣我們就能真正把糖霜塗在甜甜圈上了。

是以，我們要做的就是刪除一個空值。

So in your network view, press tab, type null, and place it after your mountain, connect your mountain to your null, and set your display flag on your null.

是以，在網絡視圖中按下 tab 鍵，輸入 null，將其放在山峰之後，將山峰連接到 null，並在 null 上設置顯示標誌。

Now you'll notice absolutely no difference between your mountain and your null, and that's because this null doesn't actually change anything.

現在，你會發現你的山和你的空完全沒有區別，這是因為這個空實際上沒有改變任何東西。

All it does is create a node that's very easy to reference.

它所做的就是創建一個非常容易引用的節點。

We can just call this donut out, and now we know that this node over here is the output for our donut.

我們可以直接調用這個甜甜圈，現在我們知道這個節點就是甜甜圈的輸出。

If we go up a level, we have our donut over here, and we can now create our icing.

如果我們再往上一層，我們的甜甜圈就在這裡，現在我們可以製作糖霜了。

I'm just going to show you a different way to create an object where you don't need to use your shelf tools.

我將向你展示另一種創建對象的方法，在這種方法中，你不需要使用架子上的工具。

You can just go over to your object network, press tab like we've done before, and over here you can type geo, and that will give you this geometry node.

你可以進入你的對象網絡，像我們之前做的那樣按下 tab 鍵，然後在這裡輸入 geo，就會得到這個幾何節點。

We're going to place this, and you'll notice that it's the same node as this one over here, except there's nothing inside of it.

我們要放置這個節點，你會發現它和這裡的節點是一樣的，只是裡面什麼都沒有。

We're going to just rename it to icing, and then double click on the actual node to dive inside.

我們只需將其重命名為結冰，然後雙擊實際節點即可進入內部。

As you can see, our donut gets ghosted as expected, but that means we can't work with it because we don't have it in our current context, which is icing.

正如你所看到的，我們的甜甜圈正如預期的那樣被重影了，但這意味著我們無法使用它，因為我們當前的上下文中沒有它，也就是沒有糖霜。

To bring it into our icing node, we have to drop down an object merge.

要將它引入我們的結冰節點，我們必須下拉一個對象合併。

Press tab, type object, and you'll see object merge.

按下 tab 鍵，輸入對象，就能看到對象合併。

Now, to bring in our object, you can see over here that we want to bring in one object.

現在，要引入我們的對象，你可以看到我們要引入一個對象。

We go over to object one, go over to this open floating operator chooser, and this will bring up this choose operator window.

我們轉到對象一，打開浮動運算符選擇器，就會彈出運算符選擇窗口。

We can just minimize our icing, and now you can get a really good idea of how our networks are set up.

我們只需將結冰降到最低，現在你就能很好地瞭解我們的網絡是如何設置的了。

如您所見，我們擁有對象網絡。

Expand the donut and select this donut out.

展開甜甜圈，將該甜甜圈選中。

It's very easy to see which one is the output of this donut object when we've named it like this and put it as a null.

當我們這樣命名這個甜甜圈對象並將它置為空時，很容易就能看出哪個是這個甜甜圈對象的輸出。

We can just double click on this, and now it's in our icing node.

我們只需雙擊這個節點，現在它就在我們的結冰節點中了。

How are we going to make icing over here?

The best way to do it is to drop down a group node and group some points that will be our  Press tab, type group, and press enter.

最好的方法是下拉一個分組節點，然後將一些點分組，這就是我們的 "按 "選項卡，輸入分組，然後按回車鍵。

If you hover over this first input, it says required source data.

如果將鼠標懸停在第一個輸入項上，上面會顯示需要的源數據。

We can plug our donut into this, set your display flag on the group, and then we go over to our parameters.

我們可以將甜甜圈插入其中，在組上設置顯示標誌，然後轉到參數。

Change the group name to icing underscore group.

We're also going to change it from a group type of primitives to a group type of points.

我們還將把它從基元組類型改為點組類型。

When you do that, you'll notice that these change to these little orange points as opposed to the faces.

當你這樣做時，你會發現這些點變成了橙色的小點，而不是面。

We've changed it from being a primitive group, which would select faces, to a point group, which would select points on our geometry.

我們將其從選擇面的基元組改為選擇幾何體上的點的點組。

Over here under base group, you go over to the far right, and you have this select geometry from an available viewport.

在這裡的基礎組下，轉到最右邊，就可以從可用視口中選擇幾何體。

Click on that, and it'll allow you to click and drag over some points.

點擊它，就可以在一些點上點擊並拖動。

What we're going to do is we're going to hold space so that we can change our view, and then press three so that we have front viewport.

我們要做的就是按住空格鍵，這樣就可以更改視圖，然後按三，這樣就有了前視口。

Now we can select some points, and the group node actually goes through to the other side.

現在，我們可以選擇一些點，而組節點實際上會穿過這些點到達另一側。

If we select some points and press enter, and then hold space and press one to go back to perspective, you'll notice that it has selected points all the way around.

如果我們選中一些點並按回車鍵，然後按住空格鍵並按 1 鍵返回透視圖，你會發現它已經選中了所有的點。

We now know that these orange points are the points in our group, so we have an ising group.

現在我們知道，這些橙色的點就是我們組中的點，所以我們有了一個等值組。

The next thing to do is to go over to our network view and delete everything that's not in that ising group.

接下來要做的就是轉到我們的網絡視圖，刪除所有不在網絡組中的內容。

We can say delete, connect your ising group into the delete node, and then just set your display flag on your delete.

我們可以說刪除，將你的 ising 組連接到刪除節點，然後在刪除節點上設置顯示標誌。

At the top of this delete node in your parameters, you'll notice that it has this group dropdown.

在參數中刪除節點的頂部，你會發現有一個組下拉菜單。

Click on it, you'll notice that there's this ising group.

點擊它，你會發現有這樣一個組。

We'll select that, and you'll notice that nothing's being deleted, and we also have this error message.

我們選擇這個選項，你會發現沒有任何內容被刪除，而且還出現了這樣的錯誤信息。

To view what that error message is, we can hover over our delete node and click on this error message on the left.

要查看錯誤信息，我們可以將鼠標懸停在刪除節點上，然後點擊左側的錯誤信息。

That's our node info, and it brings up this.

這就是我們的節點資訊，它帶來了這個。

It says, warning, ising group is not a valid group.

它說，警告，ising 組不是一個有效的組。

The reason it's not recognizing this group is because we set our group to be a points group.

之所以沒有識別到這個組，是因為我們將我們的組設置為積分組。

Under entity, you have to change it from primitives to points, and it will now delete all the points in our ising group.

在 "實體 "下，將 "基元 "更改為 "點"，這樣就可以刪除 "ing "組中的所有點。

We want to delete everything that's not in our ising group, so we change this operation to delete non-selected.

我們希望刪除不在我們的 ising 組中的所有內容，是以我們將此操作改為刪除非選定內容。

現在，我們只剩下我們的 "Ising "小組了。

Now what we can do is we can give this a bit of thickness.

現在我們可以做的是，給它加點厚度。

What we want is to just extrude this surface up a bit.

我們要做的就是把這個曲面向上擠出一點。

We can drop down a poly extrude node, so press tab, poly extrude, drop it down, plug your delete node into the first input, and set your display flag.

我們可以下拉一個多重擠出節點，按下 tab 鍵，多重擠出，下拉，將刪除節點插入第一個輸入端，然後設置顯示標誌。

Under your parameters, you have all of these options.

在您的參數下，您擁有所有這些選項。

The only one we really need to worry about is this distance.

我們真正需要擔心的是這個距離。

If we push this up, you'll notice that it gives us some distance, and what we want is just a little bit, so 0.01.

如果我們把這個推上去，你會發現它給了我們一些距離，我們想要的只是一點點，所以是 0.01。

As you can see, that's given us a bit of thickness.

如你所見，這讓我們有了一點厚度。

Our ghosted donut is actually getting in the way, so we can go up to the top right of our Click on that and say hide other objects.

我們的 "鬼臉甜甜圈 "實際上是礙事的，所以我們可以點擊右上角的 "隱藏其他對象"。

Now we only have our ising in this viewport.

現在，我們只在這個視口中設置了 "ising"。

If you take a look, you'll notice that there's this lip, and we don't have a back face, and that's because the poly extrude node doesn't actually output a back face.

如果你看一下，就會發現有一個脣形，但我們沒有背面，這是因為多邊形擠出節點實際上沒有輸出背面。

We can go down over here on our parameters, and just click on output back.

我們可以在這裡查看參數，然後點擊返回輸出。

這樣就形成了一個實體幾何圖形。

If you take a look at this, it gives us a front, it gives us a side, and a back.

如果你看看這個，它給了我們一個正面、一個側面和一個背面。

輸出端正面、輸出端側面、輸出端背面。

Another cool option that you have on this poly extrude node is that you can actually output this front, back, and sides with a group.

在這個多邊形擠出節點上還有一個很酷的選項，那就是你可以用一個組來輸出正面、背面和側面。

We're going to tick this front group, and we're going to call this ising underscore top.

我們將勾選這個前組，並將其稱為 ising underscore top。

What that'll do is it'll add this front face to a group called ising underscore top.

這樣做的目的是將這個正面添加到一個名為 ising underscore top 的組中。

Just like we've done with our ising group, we now have a group called ising top.

就像我們的 ising 組一樣，我們現在有了一個名為 ising top 的組。

字幕列表影片播放

胡迪尼並不可怕--第二部分：物品 (Houdini Isn't Scary - Part 2: Objects)

bunch

recognize

access

straight