ImageAttach

Works with Bricscad (Windows) Classic and Pro, Bricscad (Linux) Classic

Attaches raster images to the drawing.

Accessing the Command

command bar: imageattach

transparent: 'imageattach

alias: iat

menu bar: Insert | Image Attach

toolbar: Images |

: imageattach

Displays a dialog box:

Specify options, and then click OK.

This command inserts the following file formats into drawings:

BMP - Windows bitmap.

JPG, JPEG and JPEG2000 (JP2, j2k) - Joint Photographic Experts Group (common among digital cameras).

PCX - PC Paintbrush.

PNG - Portable network graphics.

GIF - CompuServe graphic image format.

TGA - Targa.

TIF - Tagged image format (commonly used by desktop publishing).

ECW - Enhanced Compressed Wavelet format.

SID - MrSID is an acronym for Multi-resolution Seamless Image Database.

Command Options

Options	Description
Name	Specifies the file name of the image.
Browse	Displays the Open dialog box; click this button to choose a different raster file. Choose a raster file, and then click Open.
Path	Reports the path to the image file; cannot be edited by the user.
Full Path	Determines how much of the path is stored: Full Path - stores the full path to the file, including drive and folder names. For example: c:\foldername\imagename.ext Relative Path - stores the path from the drawing's location to the image's location; the drawing must be saved before this option can be selected. For example: ..\foldername\imagename.ext where .. refers to the folder above the current one. No path - the path is discarded.

Geocoding Information	Position files or world files have an extension that depends on what kind of image file they are associated with. See explanatory notes below: "About Geocoding Information".
Use Geocoding Information	Toggles use of a position file, which specifies the size, location, and rotation of the image file: Yes - uses a position file. No - does not use a position file.
Path	Reports the path to the position file.
Browse	Displays the Select Image Position File dialog box; choose a TWF file, and then click Open.

Insertion Point	Positions the lower left corner of the image in the drawing. This option is unavailable when a position file is used.
Specify On-screen	Toggles where you specify the insertion coordinates: Off - Specifies the x,y,z coordinates in the dialog box. On - Specifies the coordinates after you click OK, in the command bar: Insertion point - specify the x,y or x,y,z coordinates of the image's lower left corner.
X	Specifies the x coordinate of the image's lower left corner.
Y	Specifies the y coordinate of the image's lower left corner.
Z	Specifies the z coordinate of the image's lower left corner.

Scale	Sizes the image. This option is unavailable when a position file is used.
Specify On-screen	Toggles where you specify the scale factors: Off - Specifies the x,y,z scales in the dialog box. On - Specifies the scales in the command bar after you click OK: Scale factor - specify the scale factor.
X	Specifies the scale factor in the x direction: Values larger than 1 make the image larger. 1 inserts the image at actual size. Values smaller than 1 make the image smaller.
Y	Specifies the scale factor in the y direction
Z	Specifies the scale factor in the z direction.
Uniform Scale	Makes the Y and Z scale factors equal to X.

Rotation	Rotates the image about the insertion point.
Specify On-screen	Toggles where you specify the rotation angle: Off - Specifies the angle in the dialog box. On - Specifies the angle in the command bar after you click OK:. Prompts you: Rotation angle - specify the angle.
Angle	Specifies the rotation angle about the insertion point. Positive angles rotate the image counterclockwise. Negative angles rotate the image clockwise.

About Geocoding Information

Position files (or world files) are plain ASCII text files that position raster files in the drawing. They are useful for positioning images according to geographic coordinates, such as latitude and longitude. They can be created using text editors such as Notepad.

The format is:

Pixel x-size (width of image).
Rotation about the y axis (0 if no rotation).
Rotation about the x axis (0 if no rotation).
Negative pixel y size (height).
x coordinate of the upper left pixel center (starting location).
y coordinate of upper left pixel center (starting location).

Numbers can be accurate to 0.0000000000 decimal places.

Typically, the first and last letters of the image extension are used with a ”w” added at the end. Sometimes the full image extension with a ”w” at the end is used also.

The following position file formats are supported:

*.bpw (for BMP images)
*.jgw (for JPG images)
*.gfw (for GIF images)
*.tfw (for TIFF images)
*.j2w (for JPEG2000 images)
*.sdw (for SID images)

Related Commands

Image - controls the parameters of the image file.

ImageAdjust - changes the properties of images through the Properties palette.

ImageClip - clips images.

ImageFrame - toggles the display of the frame around images.

ImageQuality - toggles the quality of the image.

Transparency - toggles the transparency of monotone images.