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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 | |
21 | #ifdef TRACE |
22 | #define TRACE_GET_SCREEN_PIXELVALUE |
23 | #endif |
24 | |
25 | /* |
26 | float Xw_get_screen_pixelvalue (adisplay,pv): |
27 | XW_EXT_DISPLAY *adisplay |
28 | int pv Pixel Values |
29 | |
30 | Returns screen value from Pixel value in [0,1] Space |
31 | |
32 | */ |
33 | |
34 | #ifdef XW_PROTOTYPE |
35 | float Xw_get_screen_pixelvalue(void *adisplay,int pv) |
36 | #else |
37 | float Xw_get_screen_pixelvalue(adisplay,pv) |
38 | void *adisplay; |
39 | int pv ; |
40 | #endif /*XW_PROTOTYPE*/ |
41 | { |
42 | XW_EXT_DISPLAY *pdisplay = (XW_EXT_DISPLAY*)adisplay; |
43 | float sv ; |
44 | |
45 | if( !Xw_isdefine_display(pdisplay) ) { |
46 | /*ERROR*Bad EXT_DISPLAY Address*/ |
47 | Xw_set_error(96,"Xw_get_screen_pixelvalue",pdisplay) ; |
48 | return (0.) ; |
49 | } |
50 | |
51 | sv = (float)pv/min(WidthOfScreen(_DSCREEN),HeightOfScreen(_DSCREEN)) ; |
52 | |
53 | #ifdef TRACE_GET_SCREEN_PIXELVALUE |
54 | if( Xw_get_trace() > 1 ) { |
55 | printf (" %f = Xw_get_screen_pixelvalue(%lx,%d)\n",sv,(long ) pdisplay,pv) ; |
56 | } |
57 | #endif |
58 | |
59 | return (sv); |
60 | } |