Generators

NURBSNurbs are the most commonly used modelling tools in Cinema 4D. They are generators which create a surface from the use of other lines, curves or multiple objects.

EXTRUDE

The Extrude NURBS extrudes splines to give the object depth.

You start by selecting a predifined spline object from the spline dropdown menu
You start by selecting a predefined spline object from the spline drop down menu
You now have the outline of the rectangle which you want to be extruded
You now have the outline of the rectangle which you want to be extruded
You then select Extrude from the  NURBS menu
You then select Extrude from the NURBS menu
You then drop the Rectangle into the Extrude NURBS
You then drop the Rectangle into the Extrude NURBS
To create this!
To create this!

However, you might want to create a specific object that is not included in the predefined objects such as a heart. 

From the view panel, make sure you choose the Front viewport.
From the view panel, make sure you choose the Front viewport.
The reason for this is that if you draw anything in the Perspective view the axis will be all over the place as shown above. And we do not want that.
The reason for this is that if you draw anything in the Perspective view the axis will be all over the place as shown above. And we do not want that.
So in the front view, select the Spline tool you want to use to create your outline. I chose Freehand and drew my heart.
So in the front view, select the Spline tool you want to use to create your outline. I chose Freehand and drew my heart.
And like before, drop the Heart spline into Extrude.
And like before, drop the Heart spline into Extrude.
And you have your 3D heart!
And you have your 3D heart!

 

LATHE

By drawing only the profile of the an object, the Lathe NURB can generate a surface with a circumference by rotating the spline around the Y-axis. You usually use this when creating “round” objects such as glasses, bottles etc., which obviously cannot be found in the predefined splines.

One again, making sure you are in the Front view port, draw the profile of  you object. Make sure you close your spline!
One again, making sure you are in the Front view port, draw the profile of you object. Make sure you close your spline!
From the NURBS menu, choose Lathe
From the NURBS menu, choose Lathe
And drop the Wine spline into the Lathe NURB
And drop the Wine spline into the Lathe NURB
And there you go! The wonderful magic of the Lathe NURB.
And there you go! The wonderful magic of the Lathe NURB.

 

SWEEP

This NURB requires at least two splines: the contour spline which will determine the cross section and the path which the contour spline will be generated on.

In the Front view port, draw  a line across the XY plane. This will be the path.
In the Front view port, draw a line across the XY plane. This will be the Path.

 

Whilst still in the front view point, choose the circle from the predefined Splines. This will be the cross section.
Whilst still in the front view point, choose the circle from the predefined Splines. This will be the Cross Section.
From the NURBS menu choose Sweep
From the NURBS menu choose Sweep
And then drop the Cross Section and Path into the Sweep NURB
And then drop the Cross Section and Path into the Sweep NURB
So what the Sweep NURBS does is generate a 3D geometry shape by taking the cross section and sweeping it across the path. This is what it looks like in the Front view port.
So what the Sweep NURBS does is generate a 3D geometry shape by taking the cross section and sweeping it across the path. This is what it looks like in the Front view port.
And here is what it looks like in the Perspective view port
And here is what it looks like in the Perspective view port

 

LOFT

This NURB also requires at least two splines since it’s main purpose is to create a “coating” over the two or more splines as shown below.

Start off by choosing the star from the predefined spline shapes.
Start off by choosing the star from the predefined spline shapes.
Then choose another shape and move it away from the first shape.
Then choose another shape and move it away from the first shape.
Then choose Loft from the NURBS menu
Then choose Loft from the NURBS menu
And drop the Star and the Circle into the Loft NURB
And drop the Star and the Circle into the Loft NURB
As you see it has combined the two shapes together which created this 3D shape!
As you see it has combined the two shapes together which created this 3D shape!

 

BEZIER

This NURB, unlike the others, does not require any splines or other objects. It creates a single plane which you can then stretch and pull in all directions.This tool would be perfect to create sails on a ship.

Start off by choosing the Bezier NURB
Start off by choosing the Bezier NURB
This creates a single plane
This creates a single plane
Making sure you select the Point tool, hover your cursor over onto a point on the plane until the circle as shown above appears. Then click that point so that the handles appear
Making sure you select the Use Point Tool, hover your cursor over onto a point on the plane until the circle as shown above appears. Then click that point so that the handles appear
Then drag that point in whatever direction you want. I pulled it backwards along the Z axis
Then pull that point backwards by the blue handle along the Z axis
Do the same to the other points and the end result  should look like this!
Do the same to the other points and the end result should look like this!

 

It is important to mention that all the above NURBS can be further altered by using tools and options in the Attribute Manager.

The Caps Tab is the same in all three NURBS. It allows you to change the roundness of the object and changes according to the values you input.
The Caps Tab is the same in all three NURBS. It allows you to change the roundness of the object and changes according to the values you input.
The object tab has slightly different options depending on which NURB you are using!
The object tab has slightly different options depending on which NURB you are using!

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s