ACad Colors 2 RGB

honoluludesktop · 18 Oct 2010, 04:30

I have been programing SU materials, and had difficulty finding on line, an array of ACad color numbers along with their corresponding RGB values . I keyed it from scratch, and posted here for anyone that may be interested. Each line in the array has 4 values, the ACad number, then the red, green, and blue values.acad_colors_rgb.txtConceptually, can anyone tell me how to access an existing SU material in order to apply in to a face? Or, to add them to model.materials? I looked at the api, and tried several. without success. The closest I got was:
materials = model.materials material_current = "C:\\*Path*\\image name.png"
that created a empty (unusable?) material in model.material. The only method I thought might work, is material.texture="*.jpg", but the api example points to an image, not a skm.

thomthom · 18 Oct 2010, 06:30

@honoluludesktop said:

Conceptually, can anyone tell me how to access an existing SU material in order to apply in to a face?

model.materials is where you gain access to the materials.
If you know it name, then you can use model.materials['my material']

You can of course iterate the collection

model.materials.each { |m|
  # ...
}

@honoluludesktop said:

Or, to add them to model.materials?

model.materials.add
http://code.google.com/apis/sketchup/docs/ourdoc/materials.html#add

@honoluludesktop said:

The only method I thought might work, is material.texture="*.jpg", but the api example points to an image, not a skm.

You can't load or save .skm file via the ruby API.

TIG · 18 Oct 2010, 07:27

@honoluludesktop said:

I have been programing SU materials, and had difficulty finding on line, an array of ACad color numbers along with their corresponding RGB values . I keyed it from scratch, and posted here for anyone that may be interested. Each line in the array has 4 values, the ACad number, then the red, green, and blue values.[attachment=0:300tej3g]acad_colors_rgb.txt[/attachment:300tej3g]Conceptually, can anyone tell me how to access an existing SU material in order to apply in to a face? Or, to add them to model.materials? I looked at the api, and tried several. without success. The closest I got was:
materials = model.materials material_current = "C:\\*Path*\\image name.png"
that created a empty (unusable?) material in model.material. The only method I thought might work, is material.texture="*.jpg", but the api example points to an image, not a skm.

You could have more simply cribbed it from part of my DXFlayer tool

def DXFlayercols;;color_lookup(color)
### lookup table of aci,r,g,b
"1,255,0,0
2,255,255,0
3,0,255,0
4,0,255,255
5,0,0,255
6,255,0,255
7,255,255,255
8,65,65,65
9,128,128,128
10,255,0,0
11,255,170,170
12,189,0,0
13,189,126,126
14,129,0,0
15,129,86,86
16,104,0,0
17,104,69,69
18,79,0,0
19,79,53,53
20,255,63,0
21,255,191,170
22,189,46,0
23,189,141,126
24,129,31,0
25,129,96,86
26,104,25,0
27,104,78,69
28,79,19,0
29,79,59,53
30,255,127,0
31,255,212,170
32,189,94,0
33,189,157,126
34,129,64,0
35,129,107,86
36,104,52,0
37,104,86,69
38,79,39,0
39,79,66,53
40,255,191,0
41,255,234,170
42,189,141,0
43,189,173,126
44,129,96,0
45,129,118,86
46,104,78,0
47,104,95,69
48,79,59,0
49,79,73,53
50,255,255,0
51,255,255,170
52,189,189,0
53,189,189,126
54,129,129,0
55,129,129,86
56,104,104,0
57,104,104,69
58,79,79,0
59,79,79,53
60,191,255,0
61,234,255,170
62,141,189,0
63,173,189,126
64,96,129,0
65,118,129,86
66,78,104,0
67,95,104,69
68,59,79,0
69,73,79,53
70,127,255,0
71,212,255,170
72,94,189,0
73,157,189,126
74,64,129,0
75,107,129,86
76,52,104,0
77,86,104,69
78,39,79,0
79,66,79,53
80,63,255,0
81,191,255,170
82,46,189,0
83,141,189,126
84,31,129,0
85,96,129,86
86,25,104,0
87,78,104,69
88,19,79,0
89,59,79,53
90,0,255,0
91,170,255,170
92,0,189,0
93,126,189,126
94,0,129,0
95,86,129,86
96,0,104,0
97,69,104,69
98,0,79,0
99,53,79,53
100,0,255,63
101,170,255,191
102,0,189,46
103,126,189,141
104,0,129,31
105,86,129,96
106,0,104,25
107,69,104,78
108,0,79,19
109,53,79,59
110,0,255,127
111,170,255,212
112,0,189,94
113,126,189,157
114,0,129,64
115,86,129,107
116,0,104,52
117,69,104,86
118,0,79,39
119,53,79,66
120,0,255,191
121,170,255,234
122,0,189,141
123,126,189,173
124,0,129,96
125,86,129,118
126,0,104,78
127,69,104,95
128,0,79,59
129,53,79,73
130,0,255,255
131,170,255,255
132,0,189,189
133,126,189,189
134,0,129,129
135,86,129,129
136,0,104,104
137,69,104,104
138,0,79,79
139,53,79,79
140,0,191,255
141,170,234,255
142,0,141,189
143,126,173,189
144,0,96,129
145,86,118,129
146,0,78,104
147,69,95,104
148,0,59,79
149,53,73,79
150,0,127,255
151,170,212,255
152,0,94,189
153,126,157,189
154,0,64,129
155,86,107,129
156,0,52,104
157,69,86,104
158,0,39,79
159,53,66,79
160,0,63,255
161,170,191,255
162,0,46,189
163,126,141,189
164,0,31,129
165,86,96,129
166,0,25,104
167,69,78,104
168,0,19,79
169,53,59,79
170,0,0,255
171,170,170,255
172,0,0,189
173,126,126,189
174,0,0,129
175,86,86,129
176,0,0,104
177,69,69,104
178,0,0,79
179,53,53,79
180,63,0,255
181,191,170,255
182,46,0,189
183,141,126,189
184,31,0,129
185,96,86,129
186,25,0,104
187,78,69,104
188,19,0,79
189,59,53,79
190,127,0,255
191,212,170,255
192,94,0,189
193,157,126,189
194,64,0,129
195,107,86,129
196,52,0,104
197,86,69,104
198,39,0,79
199,66,53,79
200,191,0,255
201,234,170,255
202,141,0,189
203,173,126,189
204,96,0,129
205,118,86,129
206,78,0,104
207,95,69,104
208,59,0,79
209,73,53,79
210,255,0,255
211,255,170,255
212,189,0,189
213,189,126,189
214,129,0,129
215,129,86,129
216,104,0,104
217,104,69,104
218,79,0,79
219,79,53,79
220,255,0,191
221,255,170,234
222,189,0,141
223,189,126,173
224,129,0,96
225,129,86,118
226,104,0,78
227,104,69,95
228,79,0,59
229,79,53,73
230,255,0,127
231,255,170,212
232,189,0,94
233,189,126,157
234,129,0,64
235,129,86,107
236,104,0,52
237,104,69,86
238,79,0,39
239,79,53,66
240,255,0,63
241,255,170,191
242,189,0,46
243,189,126,141
244,129,0,31
245,129,86,96
246,104,0,25
247,104,69,78
248,79,0,19
249,79,53,59
250,51,51,51
251,80,80,80
252,105,105,105
253,130,130,130
254,190,190,190
255,255,255,255".each{|a|
  rgb=a.split(",")
  if rgb[0].to_i==color
    rgb.shift
    return rgb
  end#if
}
end#def

You can't [yet] access .skm files through the API.
You can add a material to the model.materials by name...
mat=model.materials.add("NewMaterial") if not mat=model.materials["NewMaterial"]
This uses it if it exists or makes it otherwise... it avoids making a duplicate like 'NewMaterial-1'
You then set the properties of that 'mat' with methods like...
` ### several ways of specifying the color
mat.color=[0,200,100]
mat.color="Red"

etc

mat.alpha=0.5
mat.texture="C:\Temp\Textures\NewMaterial.png"`

honoluludesktop · 18 Oct 2010, 08:04

OK fellows, bummer about skm, and darn google bot, "too-bad for me" about "DXFlayer". Thanks for directions regarding the other "stuff". That's a lot of work to create a complete texture, but when I think about, it should be.

From this, my understanding is that the materials in the other SU folders that are part of the materials folder, can not be currently accessed by api methods.

honoluludesktop · 18 Oct 2010, 08:24

Btw, anyone have a simple Acad dxf that includes sketchup equivalent textures, alpha, and materials/colors; not just the 256 colors.

TIG · 18 Oct 2010, 09:09

@honoluludesktop said:

OK fellows, bummer about skm, and darn google bot, "too-bad for me" about "DXFlayer". Thanks for directions regarding the other "stuff". That's a lot of work to create a complete texture, but when I think about, it should be.

From this, my understanding is that the materials in the other SU folders that are part of the materials folder, can not be currently accessed by api methods.

Correct - external .skm files [materials] that are not already materials in the model are not accessible through the API to 'load'.
Neither are there any methods to 'save' materials out as .skm files.

Because a .skm file is only a re-suffixed .zip file containing some .xml files and the texture image file and thumbnail in theory you COULD both load and save .skm files using various 'zip' methods available for Ruby...

To 'import' a .skm you'd copy the external .skm file and rename it as a .zip in a temp-folder, then extract its contents, parse the .xml files for name, color, alpha etc; then duplicate these for a new [or existing] material in the model.materials with that name, [re]setting its color, alpha etc and finally add the texture file to it if appropriate [remember that a .skm file can just specify a 'color' without a texture]...

To 'export' a model's material to an external .skm you'd make a temp-folder and make appropriate .xml files in it using the correct format - including the material's name, color, alpha etc, if it has a texture you would also use a texturewriter to export the material's texture as an image file into the set [making the thumbnail image is another issue?]; finally you make a new .zip file from this set of files and rename it as a .skm to suit...

I've played a little with Ruby and 'zip' files and I know Thomthom is also looking at it [for some nefarious purpose] - so far I don't think any one has made the 'skm_import' and 'skm_export' methods... But it is certainly possible...
If we wait for it to be added to the API by Google we could all be a lot grayer when it arrived...

thomthom · 18 Oct 2010, 09:26

Just learned a new word today. "nefarious"

Once we find a good solution for reading & writing ZIP files on both platforms, that is lightweight, doesn't have other dependancies so it's easy to distribute I'm sure we'll quickly have code to read .skm.
As for writing, we also need to write thumbnails, as TIG says. Another troublesome area where we are lacking - image manipulation.

honoluludesktop · 18 Oct 2010, 14:21

I unzipped a skm to see what it contained. If I learn enough, maybe working with skm's is something I can attempt to tackle a year from now?-)