| b311480e |
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 | |
| 7fd59977 |
18 | #include <Message_ProgressScale.ixx> |
| 19 | |
| 20 | static const Standard_Real ZERO = 1e-10; |
| 21 | static const Standard_Real INFINITE = 1e100; |
| 22 | |
| 23 | //======================================================================= |
| 24 | //function : Message_ProgressScale |
| 25 | //purpose : |
| 26 | //======================================================================= |
| 27 | |
| 28 | Message_ProgressScale::Message_ProgressScale () : |
| 29 | myMin(0.), myMax(100.), myStep(1.), myInfinite(Standard_False), |
| 30 | myFirst(0.), myLast(1.) |
| 31 | { |
| 32 | } |
| 33 | |
| 34 | //======================================================================= |
| 35 | //function : LocalToBase |
| 36 | //purpose : |
| 37 | //======================================================================= |
| 38 | |
| 39 | Standard_Real Message_ProgressScale::LocalToBase (const Standard_Real val) const |
| 40 | { |
| 41 | if ( val <= myMin ) return myFirst; |
| 42 | if ( myMax - myMin <= ZERO ) return myLast; |
| 43 | |
| 44 | if ( ! myInfinite ) { |
| 45 | if ( val >= myMax ) return myLast; |
| 46 | return myFirst + ( myLast - myFirst ) * ( val - myMin ) / ( myMax - myMin ); |
| 47 | } |
| 48 | Standard_Real x = ( val - myMin ) / ( myMax - myMin ); |
| 49 | // return myFirst + ( myLast - myFirst ) * ( 1. - exp ( -x ) ); // exponent |
| 50 | return myFirst + ( myLast - myFirst ) * x / ( 1. + x ); // hyperbola |
| 51 | } |
| 52 | |
| 53 | //======================================================================= |
| 54 | //function : BaseToLocal |
| 55 | //purpose : |
| 56 | //======================================================================= |
| 57 | |
| 58 | Standard_Real Message_ProgressScale::BaseToLocal (const Standard_Real val) const |
| 59 | { |
| 60 | if ( myLast - val <= ZERO ) |
| 61 | return myInfinite ? INFINITE : myMax; |
| 62 | if ( ! myInfinite ) |
| 63 | return myMin + ( myMax - myMin ) * ( val - myFirst ) / ( myLast - myFirst ); |
| 64 | // Standard_Real x = log ( ( val - myFirst ) / ( myLast - val ) ); // exponent |
| 65 | Standard_Real x = ( val - myFirst ) / ( myLast - val ); // hyperbola |
| 66 | return myMin + x * ( myMax - myMin ); |
| 67 | } |
projects / occt.git / blame