rhino 3d draw line at angle
Modeling an Earring
Nevertheless some other T-Splines tutorial. This i will show yous how to design and model an earring in Rhino 4.0
You can download this tutorial in PDF format here.
Organic Modeling for Jewelry Design with T-Splines and Rhino® 4
Designing an Earring
Juan Santocono
Industrial Design
Universidad de Buenos Aires, Argentine
Matt Sederberg
T-Splines, Inc.
© Copyright 2008 T-Splines, Inc.
Designing freeform objects can be difficult when working with traditional CAD software. T-Splines and Rhino iv offer an like shooting fish in a barrel way to create smooth, gap-free freeform models for jewelry blueprint.
The best way to read this tutorial about how to model a earring using T-Splines is by waiting at the 3D model at the aforementioned fourth dimension. Y'all tin can follow the model'south progress by selecting the differents layers in the file. T-Splines for Rhino must also be installed on your calculator. Both T-Splines for Rhinoceros and the earring model tin be downloaded at www.tsplines.com.
In this tutorial, annihilation in Blue is a Rhino command, while anything in Reddish is a T-Splines control. Type these commands in the command line of Rhinoceros to run them.
STEP ane – MESH
Creating the base mesh
To get the general shape of the earring we will start past creating a Meshtorus, with VerticalFaces=8 and AroundFaces=16.
STEP two – T-SPLINE SURFACE
Converting the mesh
Once we have the mesh torus we simply demand to convert information technology to a T-Spline surface.
Use tsConvert and select the mesh to perform the conversion. Now we have a T-Spline torus with the same control points as the mesh torus.
Footstep 3 – T-SPLINE MODIFICATION
Extruding faces
The earring design is a sun, and so we need to create the sun rays. We will include some long rays and some short rays.
We will create the long rays offset. To make these, we volition extrude some faces with tsExtrude .
1-Extrude selected faces (yellow) equally shown.
2-In order to get apartment rows of control points for the next extrusions, we need to flatten selected points. Use tsScriptFlattenPoints . Do this with each of the 4 ray tips separately.
three-Extrude the flattened faces over again ( tsExtrude ).
iv-Extrude them again.
5-Extrude them twice more (a total of four extrusions). This volition give us sufficient control points to add details to the rays.
Pace 4 – T-SPLINES ADJUSTMENTS
1-Draw the base of operations and target curves for both sides of the lord's day rays.
2-Use FlowAlongCurve on all the left-side control points.
iii-Utilise FlowAlongCurve on all the right-side control points.
Stride 5 – T-SPLINES ADJUSTMENTS
Modifying front profile
To modify the front end profile nosotros are going to do something similar to the previous step, but (for the sake of introducing an alternative workflow) instead of using the menstruation control we are going to do it manually. Draw some reference curves to provide us with a reference on how we will to transform the surface.
1-Once we have the reference curves, merely select the lower row of control points (shown) and use tsManip (scale and move) to lucifer the surface profile to the curves.
2-Repeat this procedure with the four rows of control points. This manual method can requite us a decently accucharge per unit surface.
iii-Now we accept the shape that we desire on one dominicus ray.
Footstep 6 – T-SPLINES ADJUSTMENTS
Modifying details
At present nosotros demand to do some further adjustments to go the desired design. Start, employ tsManip to scale (+Y) all the middle ray control points, this is to give a concave curvature to the sun rays.
Recollect to select all the center points of the four rows on each side.
Second, using again de tsManip calibration this four tip point, this will give us a more smooth tip.
1-Scale center control points +Y.
2-Scale tip command points -X.
Pace vii – T-SPLINE ADJUSTMENTS
Copying the rays
We have completed the shape of one sun ray, now nosotros need to shape the others. The design intent is that all four rays should have the same form, so we need to copy our offset lord's day ray shape to the other iii rays. Doing this manually would be slow and imperfect. For this reason we will use a method that assures u.s. of the exact same shape on all the rays.
one-Select all control points of the shaped ray.
2-Utilise ExtractPt to make a signal from each control indicate.
3-Draw a Polyline, snapping to each row of points. This represents the control polygon of the ray surface. Connecting the points is not strictly necessary, simply is useful to give a visual understanding of the control polygon.
4-Groups of control points from the shaped ray.
v-Re-create these control polygons to each ray. Employ Rotate (copy on).
6-Now, using snap (points and ends) motility each T-Spline control signal on each ray to its respective control polygon point from the shaped ray.
7-Repeat this with each ray until all four are shaped.
This method of copying shapes by snapping to copied control points might seem a little tricky at first sight, merely with relatively simple T-Splines shapes it is really fast and insures a symmetric shape.
STEP eight – T-SPLINE MODIFICATION
Extruding small rays
Now we are going to create the shorter rays. For this we will extrude some faces with the tsExtrude control.
All of the modeling steps used to create the shorter rays are similar to those used for the longer rays. Only follow the same workflow.
1- tsExtrude selected faces.
2-Flatten each face's control points ( tsScriptFlattenPoints ).
3- tsExtrude the flattened faces.
4- tsExtrude again and again. 4 times full, just like the longer rays
Pace 9 – T-SPLINES ADJUSTMENTS
Copying smaller ray shape
Here we are going to apply the aforementioned method we used on the longer rays, only we'll salvage time past merely copying and scaling the control polygons used for the longer rays and reusing them for the smaller rays. Just copy the control polygons of the longer rays, rotate them by 45 degrees, and scale them to be smaller. This will allow all rays, both long and short, to accept the same shape.
Step ten – T-SPLINES ADJUSTMENTS
Modifying the heart ring
To get the correct design we need to practice some adjustments on the center hole. The intention is to accept a bigger pigsty and a sharper edge on the transition betwen the sun body and the sun rays.
one-Select the control points shown and using scale2D, scale them outwards to give the hole a wider diameter and smoothen the inner torus curvature. (The origin of the 2nd scale is the center (0,0,0).)
2-Select the control points shown and using scale2D, scale them outwards to create a sharper edge between the sun body and the dominicus rays.
STEP 11 – T-SPLINE ADJUSTMENTS
Adding control points
We need to add some more control points using tsInsertPoint for the next step. Calculation a control point near a star point (shown) will yield a small explosion of new control points to keep the surface unchanged; this influx of control points is desired in this case.
One more than tweak before the next pace: we'll adjust the sun rays proportions. Just select the last 3 rows of the big rays and scale2D throught the center:
STEP 12
Creating a crease
Until now we take created a perfectly smoothen T-Spline surface, but the design intention is to have a precipitous border on the inner part of the rays. Utilise tsCrease and select the beginning segments of each ray (both sides). The crease influence will extend across two isoparms.
Pace 12
Creating the body details
Basically, what nosotros are going to practise on this step is generating some strips that will decorate the body.
1- tsExtrude these front faces every bit shown.
ii-Once they are extruded, nosotros need to alter the angle of the control points on these faces. A proficient way to do this on all faces at one time is to scale2D on the selected points shown.
three-Now that we corrected the faces, it's time for another tsExtrude .
four-Continue the extruded points selected and use the tsManip to motion +Y to go a convex body.
5-At present it is time for one last tsExtrude.
6-We need to scale2D these control points that were extruded last, this will give us smaller and closer tips. The center of the scale should be on the center of the earring in order to modify information technology symmetrically.
seven-At present, we desire the strips to be deformed in a screw. To brand the deformation more than accurate, nosotros offset demand to add together more control points. To do this, just use tsInsertPoint near the star point shown. This will generate the needed geometry for the deformation.
viii-To make the spiral deformation we will employ Maelstrom , one of the UDT tools. Beginning, select all the command points that comprise the sun body strips. Be careful to not select other points.
Second, use the maelstrom tool, where the center is the middle of the earring and the get-go and 2d radius are just those necesary for rotating the control points.
The T-Spline surface is done! Now we only need to add the remaining details.
STEP 14 – OTHER PARTS
Creating the middle part
For the center piece nosotros will just create the contour of a shape then use Revolve to generate the geometry. You can use ExtractIsoCurve on the T-Spline surface to extract the curves that will be used for the middle piece profile to become a perfect match between the parts.
Creating the hook
This is simple, draw the curve and use Pipe to generate the piece.
Union part
Draw the curve and use Pipage to generate the piece. Then merely employ BooleanDifference (Delete input=No) with the T-Splines surface.
Move the parts to fit each other.
The event is a perfectly smooth, highly detailed 3D model of an earring ready to exist manufactured.
Good luck in your modeling!
Write to my eastward-postal service below with whatsoever questions.
Juan Santocono ,
Industrial Design
jsantocono@fibertel.com.ar
A gratuitous trial of T-Splines for Rhino may be downloaded at www.tsplines.com
Source: https://www.rhino3dhelp.com/tutorials/modeling-an-earring/
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