Rhinoceros

BackgroundBitmap

Places and manipulates a background image in the current viewport

for tracing or design analysis.

Steps:

• Click an option.

Background bitmaps are always aligned with the x-axis of the construction plane. If you want your bitmap rotated with respect to the construction plan, you must open it in a bitmap editing program and rotate it there, or you can create a rotated construction plane and place the bitmap on it.

Only one image can be placed in a viewport at a time;placing a second deletes the first.

Background bitmaps are a construction aid, not a part of the scene that will be rendered. To place an image that will render, see the PictureFrame
command or the ViewportProperties command, Wallpaper
option.

Options

Align

Aligns the background bitmap to selected points.

1. Pick a base point on the background bitmap.

2. Pick a reference point on the bitmap.

3. Pick a base point on the construction plane that matches the bitmap base point.

4. Pick a reference point on the construction plane that matches the bitmap reference point.

5. Note: Background bitmaps are always aligned with the x-axis of the construction plane. If you want your bitmap rotated with respect to the construction plan, you must open it in a bitmap editing program and rotate it there, or you can create a rotated construction plane and place the bitmap on it.

Grayscale

Yes

The background bitmap displays in shades of gray.

No

The background bitmap displays in color.

Extract

Saves the bitmap to an external file.

Filter

If Yes, the image will be filtered to estimate pixel values to try to create a smoother image.

Move

Moves the background image.

1. Pick a base point.

2. Pick a point to move to.

Place

Places a background image in the current viewport.

Note: Placing a new background bitmap replaces the current bitmap.

1. Pick the first corner.

2. Pick the second corner, or type a length.

Refresh

Updates the stored bitmap if the file has changed.

Remove

Removes the background image from the current viewport.

Scale

Scales the background image in the current viewport.

1. Pick the scale origin.

2. Type a scale factor, or pick a two reference points.

Visible

If No, the background bitmap is hidden.

Viewport Layout & gt; Background Bitmap View > Background Bitmap Related topics…

 

Background for tracing