The original teaching comes from the CGARENA website:

/freestuff/tut…la_bottle.html

Web: www.hamed3d.org

Translation ：Surrounding an army alone

About the translator:

Modeling of Coca-Cola Bottle

Making a model of Coca-Cola bottle

Introduction

This tutorial shows you how to use Maya to create a Coca-Cola bottle. Although you may think that introducing the modeling of a bottle is too trivial, it is easy to overlook some things that can improve the visibility of your work. Technique details. In this tutorial I'm going to show you some of these little tricks that can help improve your Maya modeling process.

Use Baidu to search for some of the following pictures.

We divided this bottle into 3 major parts (Top - Middle - Bottom) to make it easier to handle modeling each part and decide which method you are going to use next.

Step 1: In the first step we will set up the reference image.

Make sure your reference image has a negative value on the X-axis in the view, otherwise it will obscure our model.

Step 2: Modeling of the middle part

For the modeling of the middle part, use a simple EP curve tool to create the outline of half the bottle and place the center point of the outline into the future. center of the bottle.

Next select "Surfaces Revolve", using the default options, we will get a simple shape.

We need to convert NURBS to polygons, go to the Modify menu, Convert -gt; "NURBS to Polygons Options"

The options of the command are as follows.

The reason for setting the UV to (1.3) is that we don’t want the generated polygon to be a simple shape and lose detail. If you compare the generated POLY with the original NURBS surface, you can notice that we have lost a lot of curvature detail, but don't worry, we will give a Smooth to the POLY later.

Also, we don’t need NURBS anymore, delete it

Now select “Insert Edge Loop Tool” under “Edit Mesh” and add a few loops to the positions in the picture superior. Then use "Select -gt; Select Edge Loop Tool" to select the newly added curve and scale it inward. Note here that the purpose of adding this is to give the trademark area some depth.

Tips: (Actually, everyone knows this) When you press "3", your POLY model will become smoother, and press "1" to return to the original normal shape. Status, this function has been available since MAYA2008.

Select one half of the model and delete it, then use "Duplicate" to duplicate the other half as "intance".

Next, move the vertices and try your best to make the shape of your model match the reference image.

Step 3: Modeling of the top

Select the side of the bottle and extrude it as shown in the picture.

To model the bottle cap, we create a cylinder with the following parameters. Radius: 2.72Height: 2.484SubdivisionAxis: 20Subdivision Height: 1Subdivision Caps: 1Select fewer points and scale them outward a little, then delete the larger ones. Low lid. Select the lower border and extrude it towards the inside.

Just do it according to the picture (I'm confused too, which one is "lower"?!)

Build a "poly Pipe" and place it under the bottle cap, so that you can quickly complete the bottle. The cap part is created.

Now, create a circle of triangular steps along the bottle cap. You must hold down the "V" key and use the point snap function to make sure that these steps are close to the bottle cap. . The pivot point of the pyramid step is placed at the center of the bottle cap, then press the "E" key, change the rotation mode, and "copy" 20 steps.

Step 4: Model the bottom.

There are many ways to make the bottom of a Coke bottle, here I will talk about one:

Make a simple POLY sphere

Radius: 7.5321

Subdivisions Axis: 20

Subdivision Height: 8

Make sure the radius of the sphere is as close as possible to the radius of the middle of the Coke bottle, don't worry they won't be accurate Matching, in the later process, we will slowly merge them, and notice that their subdivision levels are not the same. We will add and delete some edges to make the middle and bottom match.

Use "Select -gt; Select Edge Loop Tool" to add a loop in the middle of the bottom sphere, so that we delete the upper part of the sphere.

Select all the vertices at the bottom of the sphere, at "Y". Extrude the axis to the same plane.

Press the "3" key to preview the smooth effect.

Next, add a new line at the bottom to give those that will not. Give the polygons where the extrusion occurs a red material (select these faces and assign a red material ball in Hypershade) so that they will not be confused later.

Now, squeeze the bottle as shown in the picture. Next, we extrude the faces between the ones that have been given the red material, and extrude them twice inwards, where I have selected where the polygons should be. Secondary extrusion edges.

Now that we have done this, I give it a nice Blinn material so that the red faces are not visible.

Step 5 - Connect the parts

First, we merge the two sides of the middle part

Now, merge the middle part and the bottom. I mentioned the details of the middle and bottom. The number of segments does not match. We need to add several new edges to the middle part to match the number of subdivisions at the bottom, and delete the unmatched edges.

The subdivisions of the two parts have been matched. Join the two parts and squeeze them inward where they join.

Name the new object "Bottle"

Add additional details in the middle. In this step, we will add more details to the middle part of the Coke bottle you normally hold in your hand. Simply adjust the points and create a basic groove by pressing the surface. You want four grooves here.

Step 7: Assemble everything

In this step, merge all the points outside the bottle cap’s texture and name the newly created object. Why not merge the texture on the bottle cap together? Woolen cloth? They will produce unwanted or bad effects when smoothing. Finalizes all previous history of the merged object.

If you think the bottle is a bit thick, you can press the CTRL key to scale its Y axis, so that the XZ axis will scale while the Y axis remains unchanged (a really good little trick)

p>

Below is the smoothed model, our modeling phase is over.

Step 8 UV mapping

Edit UV in UVlayout, export the model in OBJ format, import UV layout, UV will also be imported, I am not going to do it in this tutorial Introducing the use of this software. If you are not familiar with it, please go to the following site to learn.

After UV editing is completed, return the model to Maya.

The UV of the texture on the bottle cap can be projected using a simple plane in Maya, assigning UV to only one, and then passing it to the others. 19, their UVs can be overlapped together.

Transfer UV

The method is to first select the object with UV, then select the object without UV, then enter the command panel and follow the settings in the picture:

Repeat the transfer to the remaining objects, merge the textures into one object, and name it "Cap's Tread"

Step 10: Set UV in PS

Import UV snapshot into PS, press Press the CTRL I key, flip the image, unlock it, and name the new layer "UV_reference".

Change the "UV Reference" layer to "Overlay

so that you can see the layer below. Create a new layer on the "UV Reference" layer and name it "Bump"

Now we need to collect some pictures to draw the "Coca-Cola" logo and some little dots on the bottle

I used the picture below to make those little dots under the logo.

I created the remaining dots using a simple ellipse shape tool in PS,

and used "Alt Drag" to duplicate them

Here I am. A nice HD image of the Coca-Cola logo with a transparent channel.

Now we have all the images we need. Snapshot to place these reference images.

The eleventh step is to set the BUMP map

Simply create a Blinn material and connect the CocaCola_Bump.tga image to the BUNP channel. /p>

Try to lower the "Bump depth" a little (the specific value depends on the situation)

Turn off reflection

Give the Blinn material to the Coke bottle and make sure to turn on Smooth shade all ", "Textured", "High quality", so that we can see the effect of the BUMP map,

You will see the following effect, if you set it correctly

Postscript

1. The weather is too hot and I don’t like to write anymore. What I enjoy most every day is sitting in the shade of a tree, shaking my fan and dazing...

3 , the weather is hot, which is in line with solar terms. The hotter the summer, the better everything will grow. In the same way, the colder the winter, the better the earth seals it.

Again, I would like to remind all CG people:

First, stay away from air conditioning fans (that are artificial wind) in summer. In summer, people's skin is rough and the sweat pores are fully opened, making it easy for cold "evil energy" to enter. Especially when you are sweating profusely and opening the freezer, it is the best time for the "cold evil" to invade. You don't know it when you are young, but when you turn 40, you will know it.

The second is to stay away from popsicles and cold drinks. In summer, the yang energy in the body escapes and the spleen and stomach are weak. Eat less and eat hot food. Eat less fruits (damp and cool). Many fruits improve the ability of downward excretion and make your bowel movements smoother. Prepare more things like ginger (cooling the stomach), fennel (cooling the intestines and bladder), Huoxiang Zhengqi water (heat stroke and high humidity).

The third is to get some sunshine. Especially friends with rhinitis and cervical spine problems should often bask in the back (where the solar bladder meridian passes). Replenish the body's yang energy, don't be afraid of sweating in summer, treat winter diseases in the summer, and expel the cold air from the body.

To lose body fluids, make more soup and don’t drink a lot of water (especially ice-cold bottled water. If I drink the water, I will urinate immediately, which is wasted and excreted. The more thirsty I drink, the more I will feel uncomfortable in my stomach.) The ancients said, " "Producing body fluids and quenching thirst". Only when water is converted into "body fluid" in the human body, people will not feel thirsty. Drink some "soup", and after a while you will find that your head is sweating and you are clearing up. The above is my understanding from reading the Huangdi Neijing, and it is also my own "awareness".

4. "Huangdi Neijing" says: "The Tao is practiced by saints and admired by fools." It means a person who pursues the Great Way: a sage practices it personally and does it immediately. Fools talk about it every day. They talk about the same principles and don't do anything. Anyway, I told you, believe it or not!