Blender curves and surfaces where is it

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Does ES6 make JavaScript frameworks obsolete? Podcast Do polyglots have an edge when it comes to mastering programming Featured on Meta. Now live: A fully responsive profile. Linked Related 3. Hot Network Questions. Question feed. Blender Stack Exchange works best with JavaScript enabled. Accept all cookies Customize settings. We can use curve objects in Blender to create round and more organic shapes and surfaces.

Curve objects work differently from regular mesh objects and we can use them both as helper objects to shape something else or generate geometry from them. There are Bezier, Nurbs and paths.

You can transform your curve object in object and edit mode. Access the Object Data Properties to adjust extrusion, beveling and other properties. In this article, we will explore the different ways that you can use a curve object in your Blender project.

Various settings and properties that you can adjust with your curve object in order to create more interesting shapes. In Blender, a curve object is based on a mathematical formula and we use handles or control points in order to manipulate the curve object. There are 3 types of curve objects; bezier, which is the most common type, nurbs and paths. For bezier curves, they work a little different. The curves go through the control points to create the final result while nurbs and paths do not touch the control points.

With bezier curves, you are also able to move around handles along with the control points. Paths are much like nurbs, however they stretch to the last control point. This is done by setting a resolution property, which defines the number of points which are computed between every pair of control points.

NURBS curves have a large set of variables, which allow you to create mathematically pure forms Figure 9. However, working with them requires a little more theory:.

Nurbs curves have a knot vector, a row of numbers that specifies the parametric definition of the curve. Two pre-sets are important for this. Uniform produces a uniform division for closed curves, but when used with open ones you will get "free" ends, which are difficult to locate precisely. Endpoint sets the knots in such a way that the first and last vertices are always part of the curve, which makes them much easier to place;.

The order is the 'depth' of the curve calculation. Order '1' is a point, order '2' is linear, order '3' is quadratic, and so on. Always use order '5' for Curve paths because it behaves fluidly under all circumstances, without producing irritating discontinuities in the movement. Nurbs curves have a 'weight' per vertex - the extent to which a vertex participates in the "pulling" of the curve. Figure 9. Blender's curve tools provide a quick and easy way to build great looking extruded text and logos.

We will use these tools to turn a rough sketch of a logo into a finished 3D object. First, we will import our original sketch so that we can use it as a template.

A transparent panel will appear, allowing you to select a picture to use as a background. You can set the "strength" of the background pic with the Blend slider. You can hide the background image when you are finished using it by returning to the Panel and deselecting the BackGroundPic button. A curved segment will appear and Blender will enter EditMode. We will move and add points to make a closed shape that describes the logo you are trying to trace.

Note that the new point will be connected to the previously selected point. Once a point has been added, it can be moved by selecting the control vertex and pressing GKEY. For illustration purposes, in both Order 4 surface and Order 2 surface , the knot vectors were set to Endpoint , causing the surface to extend to all edges. You can set independently the order for each interpolation axis, and like curves, it cannot be lower than 2 , and higher than 6 or the number of control points on the relevant axis.

Guess what? As you can see, that control point pulls the surface towards it. If all the control points have the same Weight then each effectively cancels each other out. It is the difference in the weights that cause the surface to move towards or away from a control point. The Weight of any particular control point is visible in the Transform Properties panel N , in the W field and not the Weight field….

To create pure circles, globes, or cylinders, you must set to specific values the weights of the control points — some of which are provided as presets in the Curve Tools panel lower right corner. Page status reviewing guidelines.

Images image not correct we can't see point labeled C see the 2. Proposed fixes : none. Surface Tools.