0030571: Visualization, TKOpenGl - mapped texture is ignored while drawing points
[occt.git] / src / Aspect / Aspect_RectangularGrid.cxx
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973c2be1 1// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 2//
973c2be1 3// This file is part of Open CASCADE Technology software library.
b311480e 4//
d5f74e42 5// This library is free software; you can redistribute it and/or modify it under
6// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 7// by the Free Software Foundation, with special exception defined in the file
8// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
9// distribution for complete text of the license and disclaimer of any warranty.
b311480e 10//
973c2be1 11// Alternatively, this file may be used under the terms of Open CASCADE
12// commercial license or contractual agreement.
b311480e 13
42cf5bc1 14#include <Aspect_RectangularGrid.hxx>
475c2302 15
42cf5bc1 16#include <Standard_NegativeValue.hxx>
17#include <Standard_NullValue.hxx>
18#include <Standard_NumericError.hxx>
7fd59977 19
92efcf78 20IMPLEMENT_STANDARD_RTTIEXT(Aspect_RectangularGrid,Aspect_Grid)
21
7fd59977 22Aspect_RectangularGrid::Aspect_RectangularGrid(
ee2be2a8 23 const Standard_Real aXStep,
24 const Standard_Real aYStep,
25 const Standard_Real anXOrigin,
26 const Standard_Real anYOrigin,
27 const Standard_Real aFirstAngle,
28 const Standard_Real aSecondAngle,
29 const Standard_Real aRotationAngle)
7fd59977 30:Aspect_Grid(anXOrigin,anYOrigin,aRotationAngle),myXStep(aXStep),myYStep(aYStep),myFirstAngle(aFirstAngle),mySecondAngle(aSecondAngle)
31
32{
33 Standard_NumericError_Raise_if(!CheckAngle (aFirstAngle,mySecondAngle),
34 "networks are parallel");
35
36 Standard_NegativeValue_Raise_if(aXStep < 0. , "invalid x step");
37 Standard_NegativeValue_Raise_if(aYStep < 0. , "invalid y step");
38 Standard_NullValue_Raise_if(aXStep == 0. , "invalid x step");
39 Standard_NullValue_Raise_if(aYStep == 0. , "invalid y step");
40}
41
42
43
ee2be2a8 44void Aspect_RectangularGrid::SetXStep(const Standard_Real aStep) {
7fd59977 45 Standard_NegativeValue_Raise_if(aStep < 0. , "invalid x step");
46 Standard_NullValue_Raise_if(aStep == 0. , "invalid y step");
47 myXStep = aStep;
48 Init();
49 UpdateDisplay();
50}
51
ee2be2a8 52void Aspect_RectangularGrid::SetYStep(const Standard_Real aStep) {
7fd59977 53 Standard_NegativeValue_Raise_if(aStep < 0. , "invalid x step");
54 Standard_NullValue_Raise_if(aStep == 0. , "invalid y step");
55 myYStep = aStep;
56 Init();
57 UpdateDisplay();
58}
59
ee2be2a8 60void Aspect_RectangularGrid::SetAngle (const Standard_Real anAngle1,
61 const Standard_Real anAngle2)
62{
7fd59977 63 Standard_NumericError_Raise_if(!CheckAngle (anAngle1,anAngle2 ),
64 "axis are parallel");
65 myFirstAngle = anAngle1;
66 mySecondAngle = anAngle2;
67 Init();
68 UpdateDisplay();
69}
70
71void Aspect_RectangularGrid::SetGridValues(
ee2be2a8 72 const Standard_Real theXOrigin,
73 const Standard_Real theYOrigin,
74 const Standard_Real theXStep,
75 const Standard_Real theYStep,
76 const Standard_Real theRotationAngle) {
7fd59977 77
78 myXOrigin = theXOrigin;
79 myYOrigin = theYOrigin;
80 Standard_NegativeValue_Raise_if(theXStep < 0. , "invalid x step");
81 Standard_NullValue_Raise_if(theXStep == 0. , "invalid x step");
82 myXStep = theXStep;
83 Standard_NegativeValue_Raise_if(theYStep < 0. , "invalid y step");
84 Standard_NullValue_Raise_if(theYStep == 0. , "invalid y step");
85 myYStep = theYStep;
86 myRotationAngle = theRotationAngle;
87 Init();
88 UpdateDisplay();
89}
90
ee2be2a8 91void Aspect_RectangularGrid::Compute(const Standard_Real X,
92 const Standard_Real Y,
93 Standard_Real& gridX,
94 Standard_Real& gridY) const {
7fd59977 95 Standard_Real D1 = b1 * X - a1 * Y - c1;
96 Standard_Real D2 = b2 * X - a2 * Y - c2;
97 Standard_Integer n1 = Standard_Integer ( Abs(D1)/myXStep + 0.5);
98 Standard_Integer n2 = Standard_Integer ( Abs(D2)/myYStep + 0.5);
99 Standard_Real offset1 = c1 + Standard_Real(n1) * Sign (myXStep , D1);
100 Standard_Real offset2 = c2 + Standard_Real(n2) * Sign (myYStep , D2);
7fd59977 101 Standard_Real Delta = a1*b2 - b1*a2;
102 gridX = ( offset2*a1 - offset1*a2) /Delta;
103 gridY = ( offset2*b1 - offset1*b2) /Delta;
7fd59977 104}
105
ee2be2a8 106Standard_Real Aspect_RectangularGrid::XStep() const {
7fd59977 107 return myXStep;
108}
109
ee2be2a8 110Standard_Real Aspect_RectangularGrid::YStep() const {
7fd59977 111 return myYStep;
112}
113
ee2be2a8 114Standard_Real Aspect_RectangularGrid::FirstAngle() const {
7fd59977 115 return myFirstAngle;
116}
117
ee2be2a8 118Standard_Real Aspect_RectangularGrid::SecondAngle() const {
7fd59977 119 return mySecondAngle;
120}
121
122void Aspect_RectangularGrid::Init () {
123
124//+zov Fixing CTS17856
125// a1 = Cos (myFirstAngle + RotationAngle() );
126// b1 = Sin (myFirstAngle + RotationAngle() );
127// c1 = XOrigin() * b1 - YOrigin() * a1;
128//
c6541a0c
D
129// a2 = Cos (mySecondAngle + RotationAngle() + M_PI / 2.);
130// b2 = Sin (mySecondAngle + RotationAngle() + M_PI / 2.);
7fd59977 131// c2 = XOrigin() * b2 - YOrigin() * a2;
132
7fd59977 133 Standard_Real angle1 = myFirstAngle + RotationAngle();
134 Standard_Real angle2 = mySecondAngle + RotationAngle();
135 if ( angle1 != 0. ) {
136 a1 = -Sin (angle1);
137 b1 = Cos (angle1);
138 c1 = XOrigin() * b1 - YOrigin() * a1;
139 } else {
140 a1 = 0.; b1 = 1.; c1 = XOrigin();
141 }
142
143 if ( angle2 != 0. ) {
c6541a0c 144 angle2 += M_PI / 2.;
7fd59977 145 a2 = -Sin (angle2);
146 b2 = Cos (angle2);
147 c2 = XOrigin() * b2 - YOrigin() * a2;
148 } else {
149 a2 = -1.; b2 = 0.; c2 = YOrigin();
150 }
7fd59977 151//-zov
152}
153
154Standard_Boolean Aspect_RectangularGrid::CheckAngle(const Standard_Real alpha,
155 const Standard_Real beta) const {
c6541a0c 156 return (Abs( Sin(alpha) * Cos(beta + M_PI / 2.) - Cos(alpha) * Sin(beta + M_PI / 2.)) != 0) ;
7fd59977 157}