/usr/include/InterViews/transformer.h is in ivtools-dev 1.2.11a1-11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | /*
* Copyright (c) 1987, 1988, 1989, 1990, 1991 Stanford University
* Copyright (c) 1991 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Stanford and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Stanford and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL STANFORD OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* Interface to transformation matrices.
*/
#ifndef iv_transformer_h
#define iv_transformer_h
#if defined(PSTOEDIT)
typedef IntCoord int;
#else
#include <InterViews/coord.h>
#include <InterViews/resource.h>
#include <InterViews/_enter.h>
#endif
//: a 3x2 matrix for use in translating 2d coordinates.
// <a href=../refman3.1/refman.html#PAGE40>in reference manual</a>
// <p><a href=../man3.1/Transformer.html>man page</a>
class Transformer
#if !defined(PSTOEDIT)
: public Resource
#endif
{
public:
Transformer(); /* identity */
Transformer(const Transformer&);
Transformer(const Transformer*);
Transformer(
float a00, float a01, float a10, float a11, float a20, float a21
);
virtual ~Transformer();
boolean identity() const;
boolean invertible() const;
boolean operator ==(const Transformer&) const;
boolean operator !=(const Transformer&) const;
Transformer& operator =(const Transformer&);
virtual void premultiply(const Transformer&);
virtual void postmultiply(const Transformer&);
virtual void invert();
virtual void translate(float dx, float dy);
virtual void scale(float sx, float sy);
virtual void rotate(float angle);
virtual void skew(float sx, float sy);
virtual void transform(float& x, float& y) const;
virtual void transform(float x, float y, float& tx, float& ty) const;
virtual void inverse_transform(float& tx, float& ty) const;
virtual void inverse_transform(
float tx, float ty, float& x, float& y
) const;
float det() const;
virtual void matrix(
float& a00, float& a01, float& a10, float& a11, float& a20, float& a21
) const;
void flipx() {mat00 *= -1.0;}
void flipy() {mat11 *= -1.0;}
boolean xflipped(float = 1e-6) const;
boolean yflipped(float = 1e-6) const;
private:
boolean identity_;
float mat00, mat01, mat10, mat11, mat20, mat21;
void update();
public:
/*
* Old definitions for backward compatibility.
*/
void GetEntries(
float& a00, float& a01, float& a10, float& a11, float& a20, float& a21
) const;
void Premultiply(Transformer* t);
void Postmultiply(Transformer* t);
void Invert();
void Translate(float dx, float dy);
void Scale(float sx, float sy);
void Rotate(float angle);
boolean Translated(float = 1e-6) const;
boolean Scaled(float = 1e-6) const;
boolean Stretched (float = 1e-6) const;
boolean Rotated(float = 1e-6) const;
boolean Rotated90(float = 1e-6) const;
void Transform(IntCoord& x, IntCoord& y) const;
void Transform(IntCoord x, IntCoord y, IntCoord& tx, IntCoord& ty) const;
void Transform(float x, float y, float& tx, float& ty) const;
void TransformList(IntCoord x[], IntCoord y[], int n) const;
void TransformList(
IntCoord x[], IntCoord y[], int n, IntCoord tx[], IntCoord ty[]
) const;
void TransformRect(IntCoord&, IntCoord&, IntCoord&, IntCoord&) const;
void TransformRect(float&, float&, float&, float&) const;
void InvTransform(IntCoord& tx, IntCoord& ty) const;
void InvTransform(
IntCoord tx, IntCoord ty, IntCoord& x, IntCoord& y
) const;
void InvTransform(float tx, float ty, float& x, float& y) const;
void InvTransformList(IntCoord tx[], IntCoord ty[], int n) const;
void InvTransformList(
IntCoord tx[], IntCoord ty[], int n, IntCoord x[], IntCoord y[]
) const;
void InvTransformRect(IntCoord&, IntCoord&, IntCoord&, IntCoord&) const;
void InvTransformRect(float&, float&, float&, float&) const;
};
inline float Transformer::det() const { return mat00*mat11 - mat01*mat10; }
inline boolean Transformer::identity() const { return identity_; }
inline boolean Transformer::invertible() const { return det() != 0; }
inline boolean Transformer::Translated(float tol) const {
return -tol > mat20 || mat20 > tol || -tol > mat21 || mat21 > tol;
}
inline boolean Transformer::Scaled(float tol) const {
float l = 1 - tol, u = 1 + tol;
return l > mat00 || mat00 > u || l > mat11 || mat11 > u;
}
inline boolean Transformer::Stretched(float tol) const {
float diff = mat00 - mat11;
return -tol > diff || diff > tol;
}
inline boolean Transformer::Rotated(float tol) const {
return -tol > mat01 || mat01 > tol || -tol > mat10 || mat10 > tol;
}
inline boolean Transformer::Rotated90(float tol) const {
return Rotated(tol) && -tol <= mat00 && mat00 <= tol &&
-tol <= mat11 && mat11 <= tol;
}
inline boolean Transformer::xflipped(float tol) const {
return Rotated90(tol) ? mat10 > 0.0 : mat00 < 0.0;
}
inline boolean Transformer::yflipped(float tol) const {
return Rotated90(tol) ? mat01 < 0.0 : mat11 < 0.0;
}
inline void Transformer::GetEntries(
float& a00, float& a01, float& a10, float& a11, float& a20, float& a21
) const {
matrix(a00, a01, a10, a11, a20, a21);
}
inline void Transformer::Translate(float dx, float dy) { translate(dx, dy); }
inline void Transformer::Scale(float sx, float sy) { scale(sx, sy); }
inline void Transformer::Rotate(float angle) { rotate(angle); }
inline void Transformer::Premultiply(Transformer* t) { premultiply(*t); }
inline void Transformer::Postmultiply(Transformer* t) { postmultiply(*t); }
inline void Transformer::Invert() { invert(); }
#if !defined(PSTOEDIT)
#include <InterViews/_leave.h>
#endif
#endif
|