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OrcaMove Control

When hulls are modeled by the direct manipulation of control points, it's important to be able to easily and quickly drag the control points to "sculpt" the shape of the hull. But it is also important to be able to very precisely place the control points, or make "fine-tuning" adjustments to tweak the hull shape. The Orca3D Move Control allows you to easily enter the coordinates of an Orca Control Point (it will not work on standard Rhino control points) or other objects in your model. Multiple Orca Control points and/or objects can be moved together, and the coordinates may either be Absolute (World) or Relative. To make it easier to precisely set angles (such as a deadrise angle), you may also use a Polar coordinate system.

Executing the OrcaMove command displays the control:

When you select a point (remember, this command only works on Orca Control Points, not Rhino control points), a small coordinate gnomon is drawn on the point, and its coordinates are shown in the X, Y, and Z fields. At this point, you can simply type in values, or use the up and down spin buttons to move the control point (this applies to moving objects as well). The spin buttons will change the values by the "Nudge Step" value shown near the top of the dialog.

The coordinate gnomon indicates the location of the "handle." The handle is the point whose coordinates are shown in the fields, and normally is just the point that you are moving. However, you can select multiple control points, and the last point that you select will be the handle point. When you change the coordinates, the other control points will shift by the same amount. If you wish to change the handle to another location (it can be any location, not just another control point), click on the Set button, and select the point graphically, or type the X, Y, and Z coordinate of the handle in Rhino's command line.

Relative coordinates are useful when you want to know or specify how far to move a point from its current location. To do this:

1. At the top of the control, click on the Relative radio button.

2. At the bottom of the control, click on the "Float" radio button. With "Float" enabled, the Local Origin will always match the Handle location.

3. Click on the control point to be moved, and enter the change in X, Y, and/or Z in the field or use the spin buttons.

Relative coordinates can also be used to place an Orca Control Point relative to another control point or object in your model. For example, you might wish for two control points to have the same Y value. To do this, follow these steps:

1. At the top of the control, click on the Relative radio button.

2. At the bottom of the control, click on the "Specified" radio button, then the Pick button

3. Click on the control point that has the Y value that you want. This is now the Local Origin (you may also simply enter the X, Y, and Z values of the Local Origin)

4. Select the control point to be moved. Its coordinates relative to the Local Origin will be displayed. Change the Y value to 0, and hit the Tab key or move the focus to another field to update the model

In both Absolute and Relative coordinates, you may switch to Polar coordinates in order to specify the location of a control point or object with a radius and angle. It's important to know that when using Polar coordinates, you are moving the handle in a plane (XY, YZ, or ZX). The distance is the distance between the handle and either the Absolute or Relative origin, projected into the plane where the handle lies, and the angle is the angle between the handle and the Absolute or Relative origin in that same plane.