truecolor with dcl problem

I'm fiddling with truecolor, and have been unable to find on here what exactly the 62 group color number is when an entity has a truecolor. I'm making a dialog box to color things with truecolor, and it seems I need two different version of the color - the RGB value that I convert with Truecolor-split function, but then I need to know the 62 group color to fill the image tiles in the dialog box. Is there a way to derive that color number?

--Jeremiah

 

Look here:

http://usa.autodesk.com/adsk/servlet/ps/item?siteID=123112&id=2886443&linkID=2475323


Bill

 

that works for the first 256, but what about the other 16 million?
if i'm going to call the fill_image function to paint a dcl image tile the color of the truecolor, i need to use the ACI value. so how do I derive it?

--Jeremiah

 

Re: truecolor with dcl problem
I believe what you want is a OLE Color to ACI.
There is a lot of info on coverting these on this site.

I don't have the link to this :

;;Bill Zondlo List of OLE color numbers
;;Derived from: (+ (car RGB_col)(* 256 (cadr RGB_col))(* 65536 (caddr RGB_col)))
;;from a post by jonf (jrf) at the Adesk NG.
;;Used dos_acitorgb for RGB #'s.
;;
;;
;;

(defun OLE_to_ACI (ole_nm /)
(setq OLELST
'(0
255
65535
65280
16776960
16711680
16711935
16777215
8421504
12632256
255
8355839
204
6710988
153
5000345
127
4145023
76
2500172
16383
8364031
13260
6717388
9881
5005209
8063
4149119
4940
2502476
32767
8372223
26316
6724044
19609
5010073
16255
4153215
9804
2505036
49151
8380415
39372
6730444
29337
5014937
24447
4157311
14668
2507340
65535
8388607
52428
6737100
39321
5020057
32639
4161407
19532
2509900
65471
8388575
52377
6737074
39282
5020037
32607
4161391
19513
2509890
65407
8388543
52326
6737049
39244
5020018
32575
4161375
19494
2509881
65343
8388511
52275
6737023
39206
5019999
32543
4161359
19475
2509871
65280
8388479
52224
6736998
39168
5019980
32512
4161343
19456
2509862
4194048
10485631
3394560
8375398
2529536
6265164
2064128
5209919
1264640
3099686
8388352
12582783
6736896
10079334
5019904
7510348
4161280
6258495
2509824
3755046
12582656
14679935
10079232
11717734
7510272
8755532
6258432
7307071
3755008
4344870
16776960
16777087
13421568
13421670
10066176
10066252
8355584
8355647
5000192
5000230
16760576
16768895
13408512
13415014
10056192
10061132
8347392
8351551
4995328
4997670
16744192
16760703
13395456
13408614
10046464
10056268
8339200
8347455
4990464
4995366
16727808
16752511
13382400
13401958
10036736
10051404
8331008
8343359
4985600
4992806
16711680
16744319
13369344
13395558
10027008
10046540
8323072
8339263
4980736
4990502
16711743
16744351
13369395
13395583
10027046
10046559
8323103
8339279
4980755
4990511
16711807
16744383
13369446
13395609
10027084
10046578
8323135
8339295
4980774
4990521
16711871
16744415
13369497
13395634
10027122
10046597
8323167
8339311
4980793
4990530
16711935
16744447
13369548
13395660
10027161
10046617
8323199
8339327
4980812
4990540
12517631
14647295
10027212
11691724
7471257
8735897
6226047
7290751
3735628
4335180
8323327
12550143
6684876
10053324
4980889
7490713
4128895
6242175
2490444
3745356
4129023
10452991
3342540
8349388
2490521
6245529
2031743
5193599
1245260
3089996
3355443
5987163
8684676
11382189
14079702
16777215)
)
(- (length olelst)(length (member ole_nm olelst)))
)

Here is a couple of more links :

http://discussion.autodesk.com/thread.jspa?messageID=1197624

http://discussion.autodesk.com/thread.jspa?messageID=1189910

http://www.jtbworld.com/lisp/DisplayColorProperties.htm

http://www.ikozmos.com/oasis-xls-help/ColorGroup/ColorTable.htm


HTH

Bill

 

On a side note:

You will not be able to get 16 million colors in DCL.
After all there are only 255 ACI numbers.
DCL is again proved to be insufficient to handle all programming needs.

You would have to use Object.dcl for that.

Bill

 

insufficient?
dude, it's a simple task. a dialog box has a bunch of image buttons, each of various colors. you click the one you want, and the hatch command is fired with the truecolor chosen.
I've found that when I assign a truecolor to an object, it is assigned a group 62 color. All I want to know is, how is AutoCAD determining that color number? It runs beyond 256 colors, and I haven't seen any mention of how to derive it on here.
But at the end of the day, the dcl routine is awesome, and vastly simplifies the truecolor process.

--J

 

I've found that when I assign a truecolor to an object, it is assigned a group 62 color. All I want to know is, how is AutoCAD determining that color number? It runs beyond 256 colors, and I haven't seen any mention of how to derive it on here.<<<

I maybe have misunderstood what you are saying.
The reason I said that DCL is insufficient is that, as far as I know, DCL does not support the 16 mil colors that you are desiring. The DCL vector_image function uses an ACI color (0-255) and a few other system/background colors.
Hence, as I know, there is no OLE or HSL -> ACI color converter. ACI is an index of 256 colors, whick approximates most of the basic colors in AutoCAD.
If you want to select a color to use in your program from the 16 million available, you will need to use the acad_truecolor function that IS posted in one of the links earlier in this discussion.

(setq color_pick (acad_truecolordlg '(420 . 16777215)))

This will return the TrueColor (assoc 420) and the ACI number (assoc 62) of the color picked.

Remember the assoc 62 (ACI) number is an approximation of the OLE number so you will see the same ACI number returned for many different OLE numbers returned.

HTH

Bill

 

WHOA! why the @#$&^#$ isn't that in the documentation? I can call that dialog box?!
how rich would we all be if we could bill Autodesk for all the time we spun our wheels or dealt with their bugs or insufficient documentation?

hey, thanks for the info on that. Certainly changes everything I'm working on.

As for the dialog box, I still want to fill the image_tiles with something, I was just hoping to find a way to derive the group 62 color, given any truecolor.

--Jeremiah

 

As for the dialog box, I still want to fill the image_tiles with something, I was just hoping to find a way to derive the group 62 color, given any truecolor.<<<

(car (acad_truecolordlg '(420 . 16711))) will return the 62 number.
Check out the color-util.lsp found in your C:\Program Files\AutoCAD 2005\Sample\VisualLISP folder. It contains all the conversion subrs for the various color formats.

Bill