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1 | // Copyright (c) 1991-1999 Matra Datavision |
2 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
3 | // |
4 | // This file is part of Open CASCADE Technology software library. |
5 | // |
6 | // This library is free software; you can redistribute it and/or modify it under |
7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
8 | // by the Free Software Foundation, with special exception defined in the file |
9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
10 | // distribution for complete text of the license and disclaimer of any warranty. |
11 | // |
12 | // Alternatively, this file may be used under the terms of Open CASCADE |
13 | // commercial license or contractual agreement. |
14 | |
15 | #ifndef _gp_Cylinder_HeaderFile |
16 | #define _gp_Cylinder_HeaderFile |
17 | |
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18 | #include <gp_Ax1.hxx> |
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19 | #include <gp_Ax3.hxx> |
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20 | |
21 | //! Describes an infinite cylindrical surface. |
22 | //! A cylinder is defined by its radius and positioned in space |
23 | //! with a coordinate system (a gp_Ax3 object), the "main |
24 | //! Axis" of which is the axis of the cylinder. This coordinate |
25 | //! system is the "local coordinate system" of the cylinder. |
26 | //! Note: when a gp_Cylinder cylinder is converted into a |
27 | //! Geom_CylindricalSurface cylinder, some implicit |
28 | //! properties of its local coordinate system are used explicitly: |
29 | //! - its origin, "X Direction", "Y Direction" and "main |
30 | //! Direction" are used directly to define the parametric |
31 | //! directions on the cylinder and the origin of the parameters, |
32 | //! - its implicit orientation (right-handed or left-handed) |
33 | //! gives an orientation (direct or indirect) to the |
34 | //! Geom_CylindricalSurface cylinder. |
35 | //! See Also |
36 | //! gce_MakeCylinder which provides functions for more |
37 | //! complex cylinder constructions |
38 | //! Geom_CylindricalSurface which provides additional |
39 | //! functions for constructing cylinders and works, in |
40 | //! particular, with the parametric equations of cylinders gp_Ax3 |
41 | class gp_Cylinder |
42 | { |
43 | public: |
44 | |
45 | DEFINE_STANDARD_ALLOC |
46 | |
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47 | //! Creates a indefinite cylinder. |
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48 | gp_Cylinder() { radius = RealLast(); } |
49 | |
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50 | //! Creates a cylinder of radius Radius, whose axis is the "main |
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51 | //! Axis" of theA3. theA3 is the local coordinate system of the cylinder. Raises ConstructionErrord if theRadius < 0.0 |
52 | gp_Cylinder (const gp_Ax3& theA3, const Standard_Real theRadius) |
53 | : pos (theA3), |
54 | radius (theRadius) |
55 | { |
56 | Standard_ConstructionError_Raise_if (theRadius < 0.0, "gp_Cylinder() - radius should be positive number"); |
57 | } |
58 | |
59 | //! Changes the symmetry axis of the cylinder. Raises ConstructionError if the direction of theA1 is parallel to the "XDirection" |
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60 | //! of the coordinate system of the cylinder. |
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61 | void SetAxis (const gp_Ax1& theA1) { pos.SetAxis (theA1); } |
62 | |
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63 | //! Changes the location of the surface. |
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64 | void SetLocation (const gp_Pnt& theLoc) { pos.SetLocation (theLoc); } |
65 | |
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66 | //! Change the local coordinate system of the surface. |
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67 | void SetPosition (const gp_Ax3& theA3) { pos = theA3; } |
68 | |
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69 | //! Modifies the radius of this cylinder. |
70 | //! Exceptions |
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71 | //! Standard_ConstructionError if theR is negative. |
72 | void SetRadius (const Standard_Real theR) |
73 | { |
74 | Standard_ConstructionError_Raise_if (theR < 0.0, "gp_Cylinder::SetRadius() - radius should be positive number"); |
75 | radius = theR; |
76 | } |
77 | |
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78 | //! Reverses the U parametrization of the cylinder |
79 | //! reversing the YAxis. |
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80 | void UReverse() { pos.YReverse(); } |
81 | |
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82 | //! Reverses the V parametrization of the plane |
83 | //! reversing the Axis. |
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84 | void VReverse() { pos.ZReverse(); } |
85 | |
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86 | //! Returns true if the local coordinate system of this cylinder is right-handed. |
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87 | Standard_Boolean Direct() const { return pos.Direct(); } |
88 | |
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89 | //! Returns the symmetry axis of the cylinder. |
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90 | const gp_Ax1& Axis() const { return pos.Axis(); } |
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91 | |
92 | //! Computes the coefficients of the implicit equation of the quadric |
93 | //! in the absolute cartesian coordinate system : |
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94 | //! theA1.X**2 + theA2.Y**2 + theA3.Z**2 + 2.(theB1.X.Y + theB2.X.Z + theB3.Y.Z) + |
95 | //! 2.(theC1.X + theC2.Y + theC3.Z) + theD = 0.0 |
96 | Standard_EXPORT void Coefficients (Standard_Real& theA1, Standard_Real& theA2, Standard_Real& theA3, |
97 | Standard_Real& theB1, Standard_Real& theB2, Standard_Real& theB3, |
98 | Standard_Real& theC1, Standard_Real& theC2, Standard_Real& theC3, Standard_Real& theD) const; |
99 | |
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100 | //! Returns the "Location" point of the cylinder. |
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101 | const gp_Pnt& Location() const { return pos.Location(); } |
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102 | |
103 | //! Returns the local coordinate system of the cylinder. |
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104 | const gp_Ax3& Position() const { return pos; } |
105 | |
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106 | //! Returns the radius of the cylinder. |
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107 | Standard_Real Radius() const { return radius; } |
108 | |
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109 | //! Returns the axis X of the cylinder. |
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110 | gp_Ax1 XAxis() const { return gp_Ax1 (pos.Location(), pos.XDirection()); } |
111 | |
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112 | //! Returns the axis Y of the cylinder. |
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113 | gp_Ax1 YAxis() const { return gp_Ax1 (pos.Location(), pos.YDirection()); } |
114 | |
115 | Standard_EXPORT void Mirror (const gp_Pnt& theP); |
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116 | |
117 | //! Performs the symmetrical transformation of a cylinder |
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118 | //! with respect to the point theP which is the center of the |
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119 | //! symmetry. |
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120 | Standard_NODISCARD Standard_EXPORT gp_Cylinder Mirrored (const gp_Pnt& theP) const; |
121 | |
122 | Standard_EXPORT void Mirror (const gp_Ax1& theA1); |
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123 | |
124 | //! Performs the symmetrical transformation of a cylinder with |
125 | //! respect to an axis placement which is the axis of the |
126 | //! symmetry. |
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127 | Standard_NODISCARD Standard_EXPORT gp_Cylinder Mirrored (const gp_Ax1& theA1) const; |
128 | |
129 | Standard_EXPORT void Mirror (const gp_Ax2& theA2); |
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130 | |
131 | //! Performs the symmetrical transformation of a cylinder with respect |
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132 | //! to a plane. The axis placement theA2 locates the plane of the |
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133 | //! of the symmetry : (Location, XDirection, YDirection). |
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134 | Standard_NODISCARD Standard_EXPORT gp_Cylinder Mirrored (const gp_Ax2& theA2) const; |
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135 | |
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136 | void Rotate (const gp_Ax1& theA1, const Standard_Real theAng) { pos.Rotate (theA1, theAng); } |
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137 | |
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138 | //! Rotates a cylinder. theA1 is the axis of the rotation. |
139 | //! theAng is the angular value of the rotation in radians. |
140 | Standard_NODISCARD gp_Cylinder Rotated (const gp_Ax1& theA1, const Standard_Real theAng) const |
141 | { |
142 | gp_Cylinder aCyl = *this; |
143 | aCyl.pos.Rotate (theA1, theAng); |
144 | return aCyl; |
145 | } |
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146 | |
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147 | void Scale (const gp_Pnt& theP, const Standard_Real theS); |
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148 | |
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149 | //! Scales a cylinder. theS is the scaling value. |
150 | //! The absolute value of theS is used to scale the cylinder |
151 | Standard_NODISCARD gp_Cylinder Scaled (const gp_Pnt& theP, const Standard_Real theS) const; |
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152 | |
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153 | void Transform (const gp_Trsf& theT); |
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154 | |
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155 | //! Transforms a cylinder with the transformation theT from class Trsf. |
156 | Standard_NODISCARD gp_Cylinder Transformed (const gp_Trsf& theT) const; |
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157 | |
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158 | void Translate (const gp_Vec& theV) { pos.Translate (theV); } |
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159 | |
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160 | //! Translates a cylinder in the direction of the vector theV. |
161 | //! The magnitude of the translation is the vector's magnitude. |
162 | Standard_NODISCARD gp_Cylinder Translated (const gp_Vec& theV) const |
163 | { |
164 | gp_Cylinder aCyl = *this; |
165 | aCyl.pos.Translate (theV); |
166 | return aCyl; |
167 | } |
168 | |
169 | void Translate (const gp_Pnt& theP1, const gp_Pnt& theP2) { pos.Translate (theP1, theP2); } |
170 | |
171 | //! Translates a cylinder from the point theP1 to the point theP2. |
172 | Standard_NODISCARD gp_Cylinder Translated (const gp_Pnt& theP1, const gp_Pnt& theP2) const |
173 | { |
174 | gp_Cylinder aCyl = *this; |
175 | aCyl.pos.Translate (theP1, theP2); |
176 | return aCyl; |
177 | } |
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178 | |
179 | private: |
180 | |
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181 | gp_Ax3 pos; |
182 | Standard_Real radius; |
183 | |
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184 | }; |
185 | |
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186 | // ======================================================================= |
187 | // function : Scale |
188 | // purpose : |
189 | // ======================================================================= |
190 | inline void gp_Cylinder::Scale (const gp_Pnt& theP, const Standard_Real theS) |
191 | { |
192 | pos.Scale (theP, theS); |
193 | radius *= theS; |
194 | if (radius < 0) |
195 | { |
196 | radius = -radius; |
197 | } |
198 | } |
199 | |
200 | // ======================================================================= |
201 | // function : Scaled |
202 | // purpose : |
203 | // ======================================================================= |
204 | inline gp_Cylinder gp_Cylinder::Scaled (const gp_Pnt& theP, const Standard_Real theS) const |
205 | { |
206 | gp_Cylinder aCyl = *this; |
207 | aCyl.pos.Scale (theP, theS); |
208 | aCyl.radius *= theS; |
209 | if (aCyl.radius < 0) |
210 | { |
211 | aCyl.radius = -aCyl.radius; |
212 | } |
213 | return aCyl; |
214 | } |
215 | |
216 | // ======================================================================= |
217 | // function : Transform |
218 | // purpose : |
219 | // ======================================================================= |
220 | inline void gp_Cylinder::Transform (const gp_Trsf& theT) |
221 | { |
222 | pos.Transform (theT); |
223 | radius *= theT.ScaleFactor(); |
224 | if (radius < 0) |
225 | { |
226 | radius = -radius; |
227 | } |
228 | } |
229 | |
230 | // ======================================================================= |
231 | // function : Transformed |
232 | // purpose : |
233 | // ======================================================================= |
234 | inline gp_Cylinder gp_Cylinder::Transformed (const gp_Trsf& theT) const |
235 | { |
236 | gp_Cylinder aCyl = *this; |
237 | aCyl.pos.Transform (theT); |
238 | aCyl.radius *= theT.ScaleFactor(); |
239 | if (aCyl.radius < 0) |
240 | { |
241 | aCyl.radius = -aCyl.radius; |
242 | } |
243 | return aCyl; |
244 | } |
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245 | |
246 | #endif // _gp_Cylinder_HeaderFile |