Topic: Good one for expert...

[Andrea]

Hi all,

I know there is only expert here..

I'm just trying to make a LISP to get size image informations..
TIFF,GPJ,BMP...and so on..

is this possible ?

[Swift]

Outside of defun I don't know any lisp. What you need to do though, if I understand correctly, is open a binary file and see how large the image it contains is. So you need to know where in the file to look for this data, have a look at http://freeimage.sourceforge.net/intro.html

[Andrea]

wooooooo!!

a little complicaated for a newbi like me..
 

[Bob Wahr]

Are the raster images in drawings already or do you want to get this info from files?  If they are in a drawing, VBA can get you that info.  If not, it probably still could.  There might well be a lisp solution also but to quote a former co-worker, when your only tool is a hammer, all problems look like nails.

[JohnK]

Image group codes 
 
Group code
 Description
 
100
 Subclass marker (AcDbRasterImage)
 
90
 Class version
 
10
 Insertion point (in WCS)
DXF: X value; APP: 3D point
 
20, 30
 DXF: Y and Z values of insertion point (in WCS)
 
11
 U-vector of a single pixel (points along the visual bottom of the image, starting at the insertion point) (in WCS)
DXF: X value; APP: 3D point
 
21, 31
 DXF: Y and Z values U-vector (in WCS)
 
12
 V-vector of a single pixel (points along the visual left side of the image, starting at the insertion point) (in WCS)
DXF: X value; APP: 3D point
 
22, 32
 DXF: Y and Z values of V-vector (in WCS)
 
13
 Image size in pixels
DXF: U value; APP: 2D point (U and V values)
 
23
 DXF: V value of image size in pixels
 
340
 Hard reference to imagedef object
 
70
 Image display properties:
1 = Show image
2 = Show image when not aligned with screen
4 = Use clipping boundary
8 = Transparency is on
 
280
 Clipping state: 0 = Off; 1 = On
 
281
 Brightness value (0-100; default = 50)
 
282
 Contrast value (0-100; default = 50)
 
283
 Fade value (0-100; default = 0)
 
360
 Hard reference to imagedef_reactor object
 
71
 Clipping boundary type. 1 = Rectangular; 2 = Polygonal
 
91
 Number of clip boundary vertices that follow
 
14
 Clip boundary vertex (in OCS)
DXF: X value; APP: 2D point (multiple entries)
NOTE 1) For rectangular clip boundary type, two opposite corners must be specified. Default is (–0.5,–0.5), (size.x–0.5, size.y–0.5). 2) For polygonal clip boundary type, three or more vertices must be specified. Polygonal vertices must be listed sequentially
 
24
 DXF: Y value of clip boundary vertex (in OCS) (multiple entries)
 

[Andrea]

se7en

hey !!  this is pretty close....thanks
but is this possible to get info befor inserting the image file ?