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1 | // Copyright (c) 1999-2012 OPEN CASCADE SAS |
2 | // |
3 | // The content of this file is subject to the Open CASCADE Technology Public |
4 | // License Version 6.5 (the "License"). You may not use the content of this file |
5 | // except in compliance with the License. Please obtain a copy of the License |
6 | // at http://www.opencascade.org and read it completely before using this file. |
7 | // |
8 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
9 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
10 | // |
11 | // The Original Code and all software distributed under the License is |
12 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
13 | // Initial Developer hereby disclaims all such warranties, including without |
14 | // limitation, any warranties of merchantability, fitness for a particular |
15 | // purpose or non-infringement. Please see the License for the specific terms |
16 | // and conditions governing the rights and limitations under the License. |
17 | |
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18 | |
19 | #include <Xw_Extension.h> |
20 | |
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21 | /* ifdef then trace on */ |
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22 | #ifdef TRACE |
23 | #define TRACE_DEF_COLOR |
24 | #endif |
25 | |
26 | /* |
27 | XW_STATUS Xw_def_color(acolormap,index,r,g,b): |
28 | XW_EXT_COLORMAP *acolormap |
29 | int index ; Color index 0 >= x < MAXCOLOR |
30 | float r,g,b ; Red,Green,Blue color value 0. >= x <= 1. |
31 | |
32 | Update Color Extended colormap index with the specified R,G,B values . |
33 | |
34 | Returns ERROR if BadColor Index |
35 | Returns SUCCESS if Successful |
36 | |
37 | */ |
38 | |
39 | #ifdef XW_PROTOTYPE |
40 | XW_STATUS Xw_def_color (void* acolormap, |
41 | int index,float r,float g,float b) |
42 | #else |
43 | XW_STATUS Xw_def_color (acolormap,index,r,g,b) |
44 | void *acolormap; |
45 | int index ; |
46 | float r,g,b ; |
47 | #endif /*XW_PROTOTYPE*/ |
48 | { |
49 | XW_EXT_COLORMAP *pcolormap = (XW_EXT_COLORMAP*)acolormap ; |
50 | XColor color ; |
51 | int cclass,isapproximate; |
52 | unsigned long pixel; |
53 | XW_STATUS status = XW_SUCCESS; |
54 | |
55 | if ( !Xw_isdefine_colorindex(pcolormap,index) ) { |
56 | /*ERROR*Bad Color Index*/ |
57 | Xw_set_error(1,"Xw_def_color",&index) ; |
58 | return (XW_ERROR) ; |
59 | } |
60 | |
61 | if( pcolormap->mapping == Xw_TOM_READONLY ) { |
62 | cclass = StaticColor; |
63 | } else { |
64 | cclass = _CCLASS; |
65 | } |
66 | |
67 | switch (cclass) { |
68 | |
69 | case TrueColor : |
70 | Xw_get_color_pixel(pcolormap,r,g,b,&pixel,&isapproximate) ; |
71 | break ; |
72 | |
73 | case PseudoColor : |
74 | if( pcolormap->mapping == Xw_TOM_COLORCUBE ) { |
75 | int kindex; |
76 | if( (_CGINFO.red_mult > 0) && (fabs(r-g) < 0.01) && (fabs(r-b) < 0.01) ) { |
77 | kindex = (int)(0.5+r*_CGINFO.red_max)*_CGINFO.red_mult; |
78 | if( _CINFO.red_max > 0 ) |
79 | kindex += (_CINFO.red_max+1)*(_CINFO.green_max+1)*(_CINFO.blue_max+1); |
80 | } else if( _CINFO.red_mult > 0 ) { |
81 | kindex = ((int)(0.5+r*_CINFO.red_max))*_CINFO.red_mult+ |
82 | ((int)(0.5+g*_CINFO.green_max))*_CINFO.green_mult+ |
83 | ((int)(0.5+b*_CINFO.blue_max))*_CINFO.blue_mult; |
84 | } else if( _CGINFO.red_mult > 0 ) { |
85 | float l = (r+g+b)/3.; |
86 | kindex = (int)(0.5+l*_CGINFO.red_max)*_CGINFO.red_mult; |
87 | } else { |
88 | kindex = 0; |
89 | } |
90 | pixel = _CINFO.base_pixel + kindex; |
91 | } else { |
92 | color.pixel = pixel = pcolormap->pixels[index] ; |
93 | color.red = (unsigned short) (r * 0xFFFF) ; |
94 | color.green = (unsigned short) (g * 0xFFFF) ; |
95 | color.blue = (unsigned short) (b * 0xFFFF) ; |
96 | color.flags = DoRed|DoGreen|DoBlue ; |
97 | XStoreColor(_CDISPLAY,_CINFO.colormap,&color) ; |
98 | } |
99 | break ; |
100 | |
101 | case StaticColor : |
102 | status = Xw_alloc_color(pcolormap,r,g,b,&pixel,&isapproximate) ; |
103 | break ; |
104 | } |
105 | |
106 | if( status ) { |
107 | pcolormap->define[index] = USERCOLOR ; |
108 | pcolormap->pixels[index] = pixel ; |
109 | } |
110 | |
111 | #ifdef TRACE_DEF_COLOR |
112 | if( Xw_get_trace() ) { |
113 | printf(" %d = Xw_def_color(%lx,%d,%f,%f,%f)\n",status,(long ) pcolormap,index,r,g,b) ; |
114 | } |
115 | #endif |
116 | return (status); |
117 | } |