diff options
Diffstat (limited to 'src/libnr/nr-matrix.h')
| -rw-r--r-- | src/libnr/nr-matrix.h | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/src/libnr/nr-matrix.h b/src/libnr/nr-matrix.h deleted file mode 100644 index 5d62dfafe..000000000 --- a/src/libnr/nr-matrix.h +++ /dev/null @@ -1,313 +0,0 @@ -#ifndef __NR_MATRIX_H__ -#define __NR_MATRIX_H__ - -/** \file - * Definition of NR::Matrix type. - * - * \note Operator functions (e.g. Matrix * Matrix etc.) are mostly in - * libnr/nr-matrix-ops.h. See end of file for discussion. - * - * Main authors: - * Lauris Kaplinski <lauris@kaplinski.com>: - * Original NRMatrix definition and related macros. - * - * Nathan Hurst <njh@mail.csse.monash.edu.au>: - * NR::Matrix class version of the above. - * - * This code is in public domain. - */ - -#include <glib.h> // g_assert() -#include <glib/gmessages.h> - -#include "libnr/nr-coord.h" -#include "libnr/nr-values.h" -#include <libnr/nr-rotate.h> -#include <libnr/nr-scale.h> -#include <libnr/nr-translate.h> -#include <2geom/affine.h> - -namespace NR { - -/** - * The Matrix class. - * - * For purposes of multiplication, points should be thought of as row vectors - * - * p = ( p[X] p[Y] 1 ) - * - * to be right-multiplied by transformation matrices - * \verbatim - c[] = | c[0] c[1] 0 | - | c[2] c[3] 0 | - | c[4] c[5] 1 | \endverbatim - * - * (so the columns of the matrix correspond to the columns (elements) of the result, - * and the rows of the matrix correspond to columns (elements) of the "input"). - */ -class Matrix { - - - public: - - /** - * Various forms of constructor - */ - - /** - * - */ - explicit Matrix() { } - - - /** - * - */ - Matrix(Matrix const &m) { - - NR::Coord const *src = m._c; - NR::Coord *dest = _c; - - *dest++ = *src++; //0 - *dest++ = *src++; //1 - *dest++ = *src++; //2 - *dest++ = *src++; //3 - *dest++ = *src++; //4 - *dest = *src ; //5 - - } - - - Matrix(Geom::Affine const &m) { - NR::Coord *dest = _c; - - *dest++ = m[0]; - *dest++ = m[1]; - *dest++ = m[2]; - *dest++ = m[3]; - *dest++ = m[4]; - *dest = m[5]; - } - - /** - * - */ - Matrix(double c0, double c1, - double c2, double c3, - double c4, double c5) { - - NR::Coord *dest = _c; - - *dest++ = c0; //0 - *dest++ = c1; //1 - *dest++ = c2; //2 - *dest++ = c3; //3 - *dest++ = c4; //4 - *dest = c5; //5 - - } - - - - /** - * - */ - Matrix &operator=(Matrix const &m) { - - NR::Coord const *src = m._c; - NR::Coord *dest = _c; - - *dest++ = *src++; //0 - *dest++ = *src++; //1 - *dest++ = *src++; //2 - *dest++ = *src++; //3 - *dest++ = *src++; //4 - *dest = *src ; //5 - - return *this; - } - - - - - /** - * - */ - explicit Matrix(scale const &sm) { - - NR::Coord *dest = _c; - - *dest++ = sm[X]; //0 - *dest++ = 0.0; //1 - *dest++ = 0.0; //2 - *dest++ = sm[Y]; //3 - *dest++ = 0.0; //4 - *dest = 0.0; //5 - - } - - - - - - - /** - * - */ - explicit Matrix(rotate const &r) { - - NR::Coord *dest = _c; - - *dest++ = r.vec[X]; //0 - *dest++ = r.vec[Y]; //1 - *dest++ = -r.vec[Y]; //2 - *dest++ = r.vec[X]; //3 - *dest++ = 0.0; //4 - *dest = 0.0; //5 - - } - - - - - /** - * - */ - explicit Matrix(translate const &tm) { - - NR::Coord *dest = _c; - - *dest++ = 1.0; //0 - *dest++ = 0.0; //1 - *dest++ = 0.0; //2 - *dest++ = 1.0; //3 - *dest++ = tm[X]; //4 - *dest = tm[Y]; //5 - } - - - /** - * - */ - bool test_identity() const; - - - /** - * - */ - bool is_translation(Coord const eps = 1e-6) const; - - /** - * - */ - bool is_scale(Coord const eps = 1e-6) const; - - /** - * - */ - bool is_rotation(Coord const eps = 1e-6) const; - - - /** - * - */ - Matrix inverse() const; - - - - /** - * - */ - inline Coord &operator[](int const i) { - return _c[i]; - } - - - - /** - * - */ - inline Coord operator[](int const i) const { - return _c[i]; - } - - inline operator Geom::Affine() const { - return Geom::Affine(_c[0], _c[1], _c[2], _c[3], _c[4], _c[5]); - } - - /** - * - */ - void set_identity(); - - /** - * - */ - Coord det() const; - - - /** - * - */ - Coord descrim2() const; - - - /** - * - */ - Coord descrim() const; - - - private: - - - NR::Coord _c[6]; -}; - -/** A function to print out the Matrix (for debugging) */ -inline std::ostream &operator<< (std::ostream &out_file, const NR::Matrix &m) { - out_file << "A: " << m[0] << " C: " << m[2] << " E: " << m[4] << "\n"; - out_file << "B: " << m[1] << " D: " << m[3] << " F: " << m[5] << "\n"; - return out_file; -} - -} /* namespace NR */ - - - - - - - -/** \note - * Discussion of splitting up nr-matrix.h into lots of little files: - * - * Advantages: - * - * - Reducing amount of recompilation necessary when anything changes. - * - * - Hopefully also reducing compilation time by reducing the number of inline - * function definitions encountered by the compiler for a given .o file. - * (No timing comparisons done yet. On systems without much memory available - * for caching, this may be outweighed by additional I/O costs.) - * - * Disadvantages: - * - * - More #include lines necessary per file. If a compile fails due to - * not having all the necessary #include lines, then the developer needs - * to spend some time working out what #include to add. - */ - -#endif /* !__NR_MATRIX_H__ */ - - -/* - Local Variables: - mode:c++ - c-file-style:"stroustrup" - c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) - indent-tabs-mode:nil - fill-column:99 - End: -*/ -// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |