forked from enlightenment/efl
eina: add eina_matrix.
This code come from Enesim and was done by Jorge. I did just take care of changing the namespace and coding style.
This commit is contained in:
parent
2b0fb1ea1d
commit
659d3c4fd7
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@ -85,7 +85,9 @@ lib/eina/eina_tmpstr.h \
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lib/eina/eina_alloca.h \
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lib/eina/eina_cow.h \
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lib/eina/eina_inline_unicode.x \
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lib/eina/eina_thread_queue.h
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lib/eina/eina_thread_queue.h \
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lib/eina/eina_matrix.h \
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lib/eina/eina_quad.h
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# Will be back for developper after 1.2.
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# lib/eina/eina_model.h
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@ -144,7 +146,9 @@ lib/eina/eina_xattr.c \
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lib/eina/eina_share_common.h \
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lib/eina/eina_private.h \
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lib/eina/eina_strbuf_common.h \
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lib/eina/eina_thread_queue.c
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lib/eina/eina_thread_queue.c \
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lib/eina/eina_matrix.c \
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lib/eina/eina_quad.c
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# Will be back for developper after 1.2
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# lib/eina/eina_model.c \
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@ -262,6 +262,7 @@ extern "C" {
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#include <eina_value_util.h>
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#include <eina_cow.h>
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#include <eina_thread_queue.h>
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#include <eina_matrix.h>
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#ifdef __cplusplus
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}
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@ -0,0 +1,586 @@
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/* EINA - Drawing Library
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* Copyright (C) 2007-2014 Jorge Luis Zapata
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "eina_private.h"
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#include <math.h>
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#include "eina_fp.h"
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#include "eina_rectangle.h"
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#include "eina_quad.h"
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#include "eina_matrix.h"
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#define MATRIX_XX(m) (m)->xx
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#define MATRIX_XY(m) (m)->xy
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#define MATRIX_XZ(m) (m)->xz
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#define MATRIX_YX(m) (m)->yx
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#define MATRIX_YY(m) (m)->yy
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#define MATRIX_YZ(m) (m)->yz
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#define MATRIX_ZX(m) (m)->zx
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#define MATRIX_ZY(m) (m)->zy
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#define MATRIX_ZZ(m) (m)->zz
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#define MATRIX_SIZE 9
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#define QUAD_X0(q) q->x0
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#define QUAD_Y0(q) q->y0
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#define QUAD_X1(q) q->x1
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#define QUAD_Y1(q) q->y1
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#define QUAD_X2(q) q->x2
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#define QUAD_Y2(q) q->y2
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#define QUAD_X3(q) q->x3
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#define QUAD_Y3(q) q->y3
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/*============================================================================*
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* Local *
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*============================================================================*/
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/** @cond internal */
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/*
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* In the range [-pi pi]
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* (4/pi)*x - ((4/(pi*pi))*x*abs(x))
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* http://www.devmaster.net/forums/showthread.php?t=5784
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*/
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#define EXTRA_PRECISION
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static inline double
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_sin(double x)
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{
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const double B = 4/M_PI;
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const double C = -4/(M_PI*M_PI);
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double y = (B * x) + (C * x * fabsf(x));
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#ifdef EXTRA_PRECISION
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// const float Q = 0.775;
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const double P = 0.225;
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y = P * (y * fabsf(y) - y) + y; // Q * y + P * y * abs(y)
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#endif
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return y;
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}
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static inline double
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_cos(double x)
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{
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x += M_PI_2;
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if (x > M_PI) // Original x > pi/2
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{
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x -= 2 * M_PI; // Wrap: cos(x) = cos(x - 2 pi)
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}
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return _sin(x);
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}
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/** @endcond */
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/*============================================================================*
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* API *
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*============================================================================*/
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EAPI Eina_Matrix_Type
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eina_matrix3_type_get(const Eina_Matrix3 *m)
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{
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if ((MATRIX_ZX(m) != 0) || (MATRIX_ZY(m) != 0) || (MATRIX_ZZ(m) != 1))
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return EINA_MATRIX_TYPE_PROJECTIVE;
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else
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{
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if ((MATRIX_XX(m) == 1) && (MATRIX_XY(m) == 0) && (MATRIX_XZ(m) == 0) &&
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(MATRIX_YX(m) == 0) && (MATRIX_YY(m) == 1) && (MATRIX_YZ(m) == 0))
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return EINA_MATRIX_TYPE_IDENTITY;
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else
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return EINA_MATRIX_TYPE_AFFINE;
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}
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}
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EAPI Eina_Matrix_Type
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eina_matrix3_f16p16_type_get(const Eina_Matrix3_F16p16 *m)
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{
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if ((MATRIX_ZX(m) != 0) || (MATRIX_ZY(m) != 0) || (MATRIX_ZZ(m) != 65536))
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return EINA_MATRIX_TYPE_PROJECTIVE;
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else
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{
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if ((MATRIX_XX(m) == 65536) && (MATRIX_XY(m) == 0) && (MATRIX_XZ(m) == 0) &&
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(MATRIX_YX(m) == 0) && (MATRIX_YY(m) == 65536) && (MATRIX_YZ(m) == 0))
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return EINA_MATRIX_TYPE_IDENTITY;
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else
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return EINA_MATRIX_TYPE_AFFINE;
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}
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}
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EAPI void
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eina_matrix3_values_set(Eina_Matrix3 *m,
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double xx, double xy, double xz,
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double yx, double yy, double yz,
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double zx, double zy, double zz)
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{
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MATRIX_XX(m) = xx;
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MATRIX_XY(m) = xy;
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MATRIX_XZ(m) = xz;
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MATRIX_YX(m) = yx;
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MATRIX_YY(m) = yy;
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MATRIX_YZ(m) = yz;
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MATRIX_ZX(m) = zx;
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MATRIX_ZY(m) = zy;
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MATRIX_ZZ(m) = zz;
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}
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EAPI void
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eina_matrix3_values_get(const Eina_Matrix3 *m,
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double *xx, double *xy, double *xz,
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double *yx, double *yy, double *yz,
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double *zx, double *zy, double *zz)
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{
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if (xx) *xx = MATRIX_XX(m);
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if (xy) *xy = MATRIX_XY(m);
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if (xz) *xz = MATRIX_XZ(m);
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if (yx) *yx = MATRIX_YX(m);
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if (yy) *yy = MATRIX_YY(m);
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if (yz) *yz = MATRIX_YZ(m);
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if (zx) *zx = MATRIX_ZX(m);
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if (zy) *zy = MATRIX_ZY(m);
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if (zz) *zz = MATRIX_ZZ(m);
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}
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EAPI void
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eina_matrix3_fixed_values_get(const Eina_Matrix3 *m,
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Eina_F16p16 *xx, Eina_F16p16 *xy, Eina_F16p16 *xz,
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Eina_F16p16 *yx, Eina_F16p16 *yy, Eina_F16p16 *yz,
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Eina_F16p16 *zx, Eina_F16p16 *zy, Eina_F16p16 *zz)
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{
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if (xx) *xx = eina_f16p16_double_from(MATRIX_XX(m));
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if (xy) *xy = eina_f16p16_double_from(MATRIX_XY(m));
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if (xz) *xz = eina_f16p16_double_from(MATRIX_XZ(m));
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if (yx) *yx = eina_f16p16_double_from(MATRIX_YX(m));
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if (yy) *yy = eina_f16p16_double_from(MATRIX_YY(m));
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if (yz) *yz = eina_f16p16_double_from(MATRIX_YZ(m));
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if (zx) *zx = eina_f16p16_double_from(MATRIX_ZX(m));
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if (zy) *zy = eina_f16p16_double_from(MATRIX_ZY(m));
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if (zz) *zz = eina_f16p16_double_from(MATRIX_ZZ(m));
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}
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EAPI void
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eina_matrix3_matrix3_f16p16_to(const Eina_Matrix3 *m,
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Eina_Matrix3_F16p16 *fm)
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{
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eina_matrix3_fixed_values_get(m,
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&fm->xx, &fm->xy, &fm->xz,
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&fm->yx, &fm->yy, &fm->yz,
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&fm->zx, &fm->zy, &fm->zz);
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}
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EAPI void
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eina_matrix3_point_transform(const Eina_Matrix3 *m,
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double x, double y,
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double *xr, double *yr)
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{
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double xrr, yrr;
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if (!MATRIX_ZX(m) && !MATRIX_ZY(m))
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{
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xrr = (x * MATRIX_XX(m) + y * MATRIX_XY(m) + MATRIX_XZ(m));
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yrr = (x * MATRIX_YX(m) + y * MATRIX_YY(m) + MATRIX_YZ(m));
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}
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else
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{
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xrr = (x * MATRIX_XX(m) + y * MATRIX_XY(m) + MATRIX_XZ(m)) /
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(x * MATRIX_ZX(m) + y * MATRIX_ZY(m) + MATRIX_ZZ(m));
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yrr = (x * MATRIX_YX(m) + y * MATRIX_YY(m) + MATRIX_YZ(m)) /
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(x * MATRIX_ZX(m) + y * MATRIX_ZY(m) + MATRIX_ZZ(m));
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}
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if (xr) *xr = xrr;
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if (yr) *yr = yrr;
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}
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EAPI void
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eina_matrix3_rectangle_transform(const Eina_Matrix3 *m,
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const Eina_Rectangle *r,
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const Eina_Quad *q)
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{
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eina_matrix3_point_transform(m, r->x, r->y, &((Eina_Quad *)q)->x0, &((Eina_Quad *)q)->y0);
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eina_matrix3_point_transform(m, r->x + r->w, r->y, &((Eina_Quad *)q)->x1, &((Eina_Quad *)q)->y1);
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eina_matrix3_point_transform(m, r->x + r->w, r->y + r->h, &((Eina_Quad *)q)->x2, &((Eina_Quad *)q)->y2);
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eina_matrix3_point_transform(m, r->x, r->y + r->h, &((Eina_Quad *)q)->x3, &((Eina_Quad *)q)->y3);
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}
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EAPI void
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eina_matrix3_cofactor(const Eina_Matrix3 *m, Eina_Matrix3 *a)
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{
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double a11, a12, a13, a21, a22, a23, a31, a32, a33;
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a11 = (MATRIX_YY(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZY(m));
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a12 = -1 * ((MATRIX_YX(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZX(m)));
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a13 = (MATRIX_YX(m) * MATRIX_ZY(m)) - (MATRIX_YY(m) * MATRIX_ZX(m));
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a21 = -1 * ((MATRIX_XY(m) * MATRIX_ZZ(m)) - (MATRIX_XZ(m) * MATRIX_ZY(m)));
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a22 = (MATRIX_XX(m) * MATRIX_ZZ(m)) - (MATRIX_XZ(m) * MATRIX_ZX(m));
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a23 = -1 * ((MATRIX_XX(m) * MATRIX_ZY(m)) - (MATRIX_XY(m) * MATRIX_ZX(m)));
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a31 = (MATRIX_XY(m) * MATRIX_YZ(m)) - (MATRIX_XZ(m) * MATRIX_YY(m));
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a32 = -1 * ((MATRIX_XX(m) * MATRIX_YZ(m)) - (MATRIX_XZ(m) * MATRIX_YX(m)));
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a33 = (MATRIX_XX(m) * MATRIX_YY(m)) - (MATRIX_XY(m) * MATRIX_YX(m));
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MATRIX_XX(a) = a11;
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MATRIX_XY(a) = a12;
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MATRIX_XZ(a) = a13;
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MATRIX_YX(a) = a21;
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MATRIX_YY(a) = a22;
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MATRIX_YZ(a) = a23;
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MATRIX_ZX(a) = a31;
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MATRIX_ZY(a) = a32;
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MATRIX_ZZ(a) = a33;
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}
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EAPI void
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eina_matrix3_transpose(const Eina_Matrix3 *m, Eina_Matrix3 *a)
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{
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MATRIX_XX(a) = MATRIX_XX(m);
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MATRIX_XY(a) = MATRIX_YX(m);
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MATRIX_XZ(a) = MATRIX_ZX(m);
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MATRIX_YX(a) = MATRIX_XY(m);
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MATRIX_YY(a) = MATRIX_YY(m);
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MATRIX_YZ(a) = MATRIX_ZY(m);
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MATRIX_ZX(a) = MATRIX_XZ(m);
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MATRIX_ZY(a) = MATRIX_YZ(m);
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MATRIX_ZZ(a) = MATRIX_ZZ(m);
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}
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EAPI void
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eina_matrix3_adjoint(const Eina_Matrix3 *m, Eina_Matrix3 *a)
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{
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Eina_Matrix3 cofactor;
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/* cofactor */
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eina_matrix3_cofactor(m, &cofactor);
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/* transpose */
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eina_matrix3_transpose(&cofactor, a);
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}
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EAPI double
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eina_matrix3_determinant(const Eina_Matrix3 *m)
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{
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double det;
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det = MATRIX_XX(m) * ((MATRIX_YY(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZY(m)));
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det -= MATRIX_XY(m) * ((MATRIX_YX(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZX(m)));
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det += MATRIX_XZ(m) * ((MATRIX_YX(m) * MATRIX_ZY(m)) - (MATRIX_YY(m) * MATRIX_ZX(m)));
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return det;
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}
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EAPI void
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eina_matrix3_divide(Eina_Matrix3 *m, double scalar)
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{
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MATRIX_XX(m) /= scalar;
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MATRIX_XY(m) /= scalar;
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MATRIX_XZ(m) /= scalar;
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MATRIX_YX(m) /= scalar;
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MATRIX_YY(m) /= scalar;
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MATRIX_YZ(m) /= scalar;
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MATRIX_ZX(m) /= scalar;
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MATRIX_ZY(m) /= scalar;
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MATRIX_ZZ(m) /= scalar;
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}
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EAPI void
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eina_matrix3_inverse(const Eina_Matrix3 *m, Eina_Matrix3 *m2)
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{
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double scalar;
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/* determinant */
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scalar = eina_matrix3_determinant(m);
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if (!scalar)
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{
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eina_matrix3_identity(m2);
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return;
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}
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/* do its adjoint */
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eina_matrix3_adjoint(m, m2);
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/* divide */
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eina_matrix3_divide(m2, scalar);
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}
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EAPI void
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eina_matrix3_compose(const Eina_Matrix3 *m1,
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const Eina_Matrix3 *m2,
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Eina_Matrix3 *dst)
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{
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double a11, a12, a13, a21, a22, a23, a31, a32, a33;
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a11 = (MATRIX_XX(m1) * MATRIX_XX(m2)) + (MATRIX_XY(m1) * MATRIX_YX(m2)) + (MATRIX_XZ(m1) * MATRIX_ZX(m2));
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a12 = (MATRIX_XX(m1) * MATRIX_XY(m2)) + (MATRIX_XY(m1) * MATRIX_YY(m2)) + (MATRIX_XZ(m1) * MATRIX_ZY(m2));
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a13 = (MATRIX_XX(m1) * MATRIX_XZ(m2)) + (MATRIX_XY(m1) * MATRIX_YZ(m2)) + (MATRIX_XZ(m1) * MATRIX_ZZ(m2));
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a21 = (MATRIX_YX(m1) * MATRIX_XX(m2)) + (MATRIX_YY(m1) * MATRIX_YX(m2)) + (MATRIX_YZ(m1) * MATRIX_ZX(m2));
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a22 = (MATRIX_YX(m1) * MATRIX_XY(m2)) + (MATRIX_YY(m1) * MATRIX_YY(m2)) + (MATRIX_YZ(m1) * MATRIX_ZY(m2));
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a23 = (MATRIX_YX(m1) * MATRIX_XZ(m2)) + (MATRIX_YY(m1) * MATRIX_YZ(m2)) + (MATRIX_YZ(m1) * MATRIX_ZZ(m2));
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a31 = (MATRIX_ZX(m1) * MATRIX_XX(m2)) + (MATRIX_ZY(m1) * MATRIX_YX(m2)) + (MATRIX_ZZ(m1) * MATRIX_ZX(m2));
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a32 = (MATRIX_ZX(m1) * MATRIX_XY(m2)) + (MATRIX_ZY(m1) * MATRIX_YY(m2)) + (MATRIX_ZZ(m1) * MATRIX_ZY(m2));
|
||||
a33 = (MATRIX_ZX(m1) * MATRIX_XZ(m2)) + (MATRIX_ZY(m1) * MATRIX_YZ(m2)) + (MATRIX_ZZ(m1) * MATRIX_ZZ(m2));
|
||||
|
||||
MATRIX_XX(dst) = a11;
|
||||
MATRIX_XY(dst) = a12;
|
||||
MATRIX_XZ(dst) = a13;
|
||||
MATRIX_YX(dst) = a21;
|
||||
MATRIX_YY(dst) = a22;
|
||||
MATRIX_YZ(dst) = a23;
|
||||
MATRIX_ZX(dst) = a31;
|
||||
MATRIX_ZY(dst) = a32;
|
||||
MATRIX_ZZ(dst) = a33;
|
||||
}
|
||||
|
||||
EAPI Eina_Bool
|
||||
eina_matrix3_equal(const Eina_Matrix3 *m1, const Eina_Matrix3 *m2)
|
||||
{
|
||||
if (m1->xx != m2->xx ||
|
||||
m1->xy != m2->xy ||
|
||||
m1->xz != m2->xz ||
|
||||
m1->yx != m2->yx ||
|
||||
m1->yy != m2->yy ||
|
||||
m1->yz != m2->yz ||
|
||||
m1->zx != m2->zx ||
|
||||
m1->zy != m2->zy ||
|
||||
m1->zz != m2->zz)
|
||||
return EINA_FALSE;
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_matrix3_f16p16_compose(const Eina_Matrix3_F16p16 *m1,
|
||||
const Eina_Matrix3_F16p16 *m2,
|
||||
Eina_Matrix3_F16p16 *dst)
|
||||
{
|
||||
Eina_F16p16 a11, a12, a13, a21, a22, a23, a31, a32, a33;
|
||||
|
||||
a11 = eina_f16p16_mul(MATRIX_XX(m1), MATRIX_XX(m2)) +
|
||||
eina_f16p16_mul(MATRIX_XY(m1), MATRIX_YX(m2)) +
|
||||
eina_f16p16_mul(MATRIX_XZ(m1), MATRIX_ZX(m2));
|
||||
a12 = eina_f16p16_mul(MATRIX_XX(m1), MATRIX_XY(m2)) +
|
||||
eina_f16p16_mul(MATRIX_XY(m1), MATRIX_YY(m2)) +
|
||||
eina_f16p16_mul(MATRIX_XZ(m1), MATRIX_ZY(m2));
|
||||
a13 = eina_f16p16_mul(MATRIX_XX(m1), MATRIX_XZ(m2)) +
|
||||
eina_f16p16_mul(MATRIX_XY(m1), MATRIX_YZ(m2)) +
|
||||
eina_f16p16_mul(MATRIX_XZ(m1), MATRIX_ZZ(m2));
|
||||
|
||||
a21 = eina_f16p16_mul(MATRIX_YX(m1), MATRIX_XX(m2)) +
|
||||
eina_f16p16_mul(MATRIX_YY(m1), MATRIX_YX(m2)) +
|
||||
eina_f16p16_mul(MATRIX_YZ(m1), MATRIX_ZX(m2));
|
||||
a22 = eina_f16p16_mul(MATRIX_YX(m1), MATRIX_XY(m2)) +
|
||||
eina_f16p16_mul(MATRIX_YY(m1), MATRIX_YY(m2)) +
|
||||
eina_f16p16_mul(MATRIX_YZ(m1), MATRIX_ZY(m2));
|
||||
a23 = eina_f16p16_mul(MATRIX_YX(m1), MATRIX_XZ(m2)) +
|
||||
eina_f16p16_mul(MATRIX_YY(m1), MATRIX_YZ(m2)) +
|
||||
eina_f16p16_mul(MATRIX_YZ(m1), MATRIX_ZZ(m2));
|
||||
|
||||
a31 = eina_f16p16_mul(MATRIX_ZX(m1), MATRIX_XX(m2)) +
|
||||
eina_f16p16_mul(MATRIX_ZY(m1), MATRIX_YX(m2)) +
|
||||
eina_f16p16_mul(MATRIX_ZZ(m1), MATRIX_ZX(m2));
|
||||
a32 = eina_f16p16_mul(MATRIX_ZX(m1), MATRIX_XY(m2)) +
|
||||
eina_f16p16_mul(MATRIX_ZY(m1), MATRIX_YY(m2)) +
|
||||
eina_f16p16_mul(MATRIX_ZZ(m1), MATRIX_ZY(m2));
|
||||
a33 = eina_f16p16_mul(MATRIX_ZX(m1), MATRIX_XZ(m2)) +
|
||||
eina_f16p16_mul(MATRIX_ZY(m1), MATRIX_YZ(m2)) +
|
||||
eina_f16p16_mul(MATRIX_ZZ(m1), MATRIX_ZZ(m2));
|
||||
|
||||
MATRIX_XX(dst) = a11;
|
||||
MATRIX_XY(dst) = a12;
|
||||
MATRIX_XZ(dst) = a13;
|
||||
MATRIX_YX(dst) = a21;
|
||||
MATRIX_YY(dst) = a22;
|
||||
MATRIX_YZ(dst) = a23;
|
||||
MATRIX_ZX(dst) = a31;
|
||||
MATRIX_ZY(dst) = a32;
|
||||
MATRIX_ZZ(dst) = a33;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_matrix3_translate(Eina_Matrix3 *m, double tx, double ty)
|
||||
{
|
||||
MATRIX_XX(m) = 1;
|
||||
MATRIX_XY(m) = 0;
|
||||
MATRIX_XZ(m) = tx;
|
||||
MATRIX_YX(m) = 0;
|
||||
MATRIX_YY(m) = 1;
|
||||
MATRIX_YZ(m) = ty;
|
||||
MATRIX_ZX(m) = 0;
|
||||
MATRIX_ZY(m) = 0;
|
||||
MATRIX_ZZ(m) = 1;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_matrix3_scale(Eina_Matrix3 *m, double sx, double sy)
|
||||
{
|
||||
MATRIX_XX(m) = sx;
|
||||
MATRIX_XY(m) = 0;
|
||||
MATRIX_XZ(m) = 0;
|
||||
MATRIX_YX(m) = 0;
|
||||
MATRIX_YY(m) = sy;
|
||||
MATRIX_YZ(m) = 0;
|
||||
MATRIX_ZX(m) = 0;
|
||||
MATRIX_ZY(m) = 0;
|
||||
MATRIX_ZZ(m) = 1;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_matrix3_rotate(Eina_Matrix3 *m, double rad)
|
||||
{
|
||||
double c, s;
|
||||
#if 0
|
||||
c = cosf(rad);
|
||||
s = sinf(rad);
|
||||
#else
|
||||
/* normalize the angle between -pi,pi */
|
||||
rad = fmod(rad + M_PI, 2 * M_PI) - M_PI;
|
||||
c = _cos(rad);
|
||||
s = _sin(rad);
|
||||
#endif
|
||||
|
||||
MATRIX_XX(m) = c;
|
||||
MATRIX_XY(m) = -s;
|
||||
MATRIX_XZ(m) = 0;
|
||||
MATRIX_YX(m) = s;
|
||||
MATRIX_YY(m) = c;
|
||||
MATRIX_YZ(m) = 0;
|
||||
MATRIX_ZX(m) = 0;
|
||||
MATRIX_ZY(m) = 0;
|
||||
MATRIX_ZZ(m) = 1;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_matrix3_identity(Eina_Matrix3 *m)
|
||||
{
|
||||
MATRIX_XX(m) = 1;
|
||||
MATRIX_XY(m) = 0;
|
||||
MATRIX_XZ(m) = 0;
|
||||
MATRIX_YX(m) = 0;
|
||||
MATRIX_YY(m) = 1;
|
||||
MATRIX_YZ(m) = 0;
|
||||
MATRIX_ZX(m) = 0;
|
||||
MATRIX_ZY(m) = 0;
|
||||
MATRIX_ZZ(m) = 1;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_matrix3_f16p16_identity(Eina_Matrix3_F16p16 *m)
|
||||
{
|
||||
MATRIX_XX(m) = 65536;
|
||||
MATRIX_XY(m) = 0;
|
||||
MATRIX_XZ(m) = 0;
|
||||
MATRIX_YX(m) = 0;
|
||||
MATRIX_YY(m) = 65536;
|
||||
MATRIX_YZ(m) = 0;
|
||||
MATRIX_ZX(m) = 0;
|
||||
MATRIX_ZY(m) = 0;
|
||||
MATRIX_ZZ(m) = 65536;
|
||||
}
|
||||
|
||||
EAPI Eina_Bool
|
||||
eina_matrix3_square_quad_map(Eina_Matrix3 *m, const Eina_Quad *q)
|
||||
{
|
||||
// x0 - x1 + x2 - x3
|
||||
double ex = QUAD_X0(q) - QUAD_X1(q) + QUAD_X2(q) - QUAD_X3(q);
|
||||
// y0 - y1 + y2 - y3
|
||||
double ey = QUAD_Y0(q) - QUAD_Y1(q) + QUAD_Y2(q) - QUAD_Y3(q);
|
||||
|
||||
/* paralellogram */
|
||||
if (!ex && !ey)
|
||||
{
|
||||
/* create the affine matrix */
|
||||
MATRIX_XX(m) = QUAD_X1(q) - QUAD_X0(q);
|
||||
MATRIX_XY(m) = QUAD_X2(q) - QUAD_X1(q);
|
||||
MATRIX_XZ(m) = QUAD_X0(q);
|
||||
|
||||
MATRIX_YX(m) = QUAD_Y1(q) - QUAD_Y0(q);
|
||||
MATRIX_YY(m) = QUAD_Y2(q) - QUAD_Y1(q);
|
||||
MATRIX_YZ(m) = QUAD_Y0(q);
|
||||
|
||||
MATRIX_ZX(m) = 0;
|
||||
MATRIX_ZY(m) = 0;
|
||||
MATRIX_ZZ(m) = 1;
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
else
|
||||
{
|
||||
double dx1 = QUAD_X1(q) - QUAD_X2(q); // x1 - x2
|
||||
double dx2 = QUAD_X3(q) - QUAD_X2(q); // x3 - x2
|
||||
double dy1 = QUAD_Y1(q) - QUAD_Y2(q); // y1 - y2
|
||||
double dy2 = QUAD_Y3(q) - QUAD_Y2(q); // y3 - y2
|
||||
double den = (dx1 * dy2) - (dx2 * dy1);
|
||||
|
||||
if (!den)
|
||||
return EINA_FALSE;
|
||||
|
||||
MATRIX_ZX(m) = ((ex * dy2) - (dx2 * ey)) / den;
|
||||
MATRIX_ZY(m) = ((dx1 * ey) - (ex * dy1)) / den;
|
||||
MATRIX_ZZ(m) = 1;
|
||||
MATRIX_XX(m) = QUAD_X1(q) - QUAD_X0(q) + (MATRIX_ZX(m) * QUAD_X1(q));
|
||||
MATRIX_XY(m) = QUAD_X3(q) - QUAD_X0(q) + (MATRIX_ZY(m) * QUAD_X3(q));
|
||||
MATRIX_XZ(m) = QUAD_X0(q);
|
||||
MATRIX_YX(m) = QUAD_Y1(q) - QUAD_Y0(q) + (MATRIX_ZX(m) * QUAD_Y1(q));
|
||||
MATRIX_YY(m) = QUAD_Y3(q) - QUAD_Y0(q) + (MATRIX_ZY(m) * QUAD_Y3(q));
|
||||
MATRIX_YZ(m) = QUAD_Y0(q);
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
EAPI Eina_Bool
|
||||
eina_matrix3_quad_square_map(Eina_Matrix3 *m,
|
||||
const Eina_Quad *q)
|
||||
{
|
||||
Eina_Matrix3 tmp;
|
||||
|
||||
/* compute square to quad */
|
||||
if (!eina_matrix3_square_quad_map(&tmp, q))
|
||||
return EINA_FALSE;
|
||||
|
||||
eina_matrix3_inverse(&tmp, m);
|
||||
/* make the projective matrix3 always have 1 on zz */
|
||||
if (MATRIX_ZZ(m) != 1)
|
||||
{
|
||||
eina_matrix3_divide(m, MATRIX_ZZ(m));
|
||||
}
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
EAPI Eina_Bool
|
||||
eina_matrix3_quad_quad_map(Eina_Matrix3 *m,
|
||||
const Eina_Quad *src,
|
||||
const Eina_Quad *dst)
|
||||
{
|
||||
Eina_Matrix3 tmp;
|
||||
|
||||
/* TODO check that both are actually quadrangles */
|
||||
if (!eina_matrix3_quad_square_map(m, src))
|
||||
return EINA_FALSE;
|
||||
if (!eina_matrix3_square_quad_map(&tmp, dst))
|
||||
return EINA_FALSE;
|
||||
eina_matrix3_compose(&tmp, m, m);
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
|
@ -0,0 +1,339 @@
|
|||
/* EINA - EFL data type library
|
||||
* Copyright (C) 2007-2014 Jorge Luis Zapata
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library.
|
||||
* If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef EINA_MATRIX3_H_
|
||||
#define EINA_MATRIX3_H_
|
||||
|
||||
#include "eina_quad.h"
|
||||
|
||||
/**
|
||||
* @file
|
||||
* @ender_group{Eina_Matrix_Type}
|
||||
* @ender_group{Eina_Matrix3_F16p16}
|
||||
* @ender_group{Eina_Matrix3}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup Eina_Matrix_Type Matrices type
|
||||
* @ingroup Eina_Basic
|
||||
* @brief Matrix3 types
|
||||
* @{
|
||||
*/
|
||||
typedef enum _Eina_Matrix_Type
|
||||
{
|
||||
EINA_MATRIX_TYPE_IDENTITY, /**< Identity matrix3 type */
|
||||
EINA_MATRIX_TYPE_AFFINE, /**< Affine matrix3 type */
|
||||
EINA_MATRIX_TYPE_PROJECTIVE, /**< Projective matrix3 type */
|
||||
EINA_MATRIX_TYPE_LAST /**< The total number of matrix3 types */
|
||||
} Eina_Matrix_Type;
|
||||
|
||||
/**
|
||||
* @}
|
||||
* @defgroup Eina_Matrix3_F16p16 Matrices in fixed point
|
||||
* @ingroup Eina_Basic
|
||||
* @brief Fixed point matrices operations
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* Fixed point matrix3 handler
|
||||
*/
|
||||
typedef struct _Eina_Matrix3_F16p16 Eina_Matrix3_F16p16;
|
||||
|
||||
struct _Eina_Matrix3_F16p16
|
||||
{
|
||||
Eina_F16p16 xx; /**< xx in x' = (x * xx) + (y * xy) + xz */
|
||||
Eina_F16p16 xy; /**< xy in x' = (x * xx) + (y * xy) + xz */
|
||||
Eina_F16p16 xz; /**< xz in x' = (x * xx) + (y * xy) + xz */
|
||||
|
||||
Eina_F16p16 yx; /**< yx in y' = (x * yx) + (y * yy) + yz */
|
||||
Eina_F16p16 yy; /**< yy in y' = (x * yx) + (y * yy) + yz */
|
||||
Eina_F16p16 yz; /**< yz in y' = (x * yx) + (y * yy) + yz */
|
||||
|
||||
Eina_F16p16 zx; /**< zx in z' = (x * zx) + (y * zy) + zz */
|
||||
Eina_F16p16 zy; /**< zy in z' = (x * zx) + (y * zy) + zz */
|
||||
Eina_F16p16 zz; /**< zz in z' = (x * zx) + (y * zy) + zz */
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Set the given fixed point matrix to the identity matrix.
|
||||
*
|
||||
* @param m The fixed point matrix to set
|
||||
*
|
||||
* This function sets @p m to the identity matrix. No check is done on
|
||||
* @p m.
|
||||
*/
|
||||
EAPI void eina_matrix3_f16p16_identity(Eina_Matrix3_F16p16 *m);
|
||||
|
||||
EAPI void eina_matrix3_f16p16_compose(const Eina_Matrix3_F16p16 *m1,
|
||||
const Eina_Matrix3_F16p16 *m2,
|
||||
Eina_Matrix3_F16p16 *dst);
|
||||
|
||||
/**
|
||||
* @brief Return the type of the given fixed point matrix.
|
||||
*
|
||||
* @param m The fixed point matrix.
|
||||
* @return The type of the matrix.
|
||||
*
|
||||
* This function returns the type of the matrix @p m. No check is done
|
||||
* on @p m.
|
||||
*/
|
||||
EAPI Eina_Matrix_Type eina_matrix3_f16p16_type_get(const Eina_Matrix3_F16p16 *m);
|
||||
|
||||
/**
|
||||
* @}
|
||||
* @defgroup Eina_Matrix3 Matrices in floating point
|
||||
* @ingroup Eina_Basic
|
||||
* @brief Matrix definition and operations
|
||||
* @{
|
||||
*/
|
||||
|
||||
/** Helper macro for printf formatting */
|
||||
#define EINA_MATRIX3_FORMAT "g %g %g | %g %g %g | %g %g %g"
|
||||
/** Helper macro for printf formatting arg */
|
||||
#define EINA_MATRIX3_ARGS(m) (m)->xx, (m)->xy, (m)->xz, \
|
||||
(m)->yx, (m)->yy, (m)->yz, \
|
||||
(m)->zx, (m)->zy, (m)->zz
|
||||
|
||||
|
||||
/**
|
||||
* Floating point matrix3 handler
|
||||
*/
|
||||
typedef struct _Eina_Matrix3 Eina_Matrix3;
|
||||
|
||||
struct _Eina_Matrix3
|
||||
{
|
||||
double xx; /**< xx in x' = (x * xx) + (y * xy) + xz */
|
||||
double xy; /**< xy in x' = (x * xx) + (y * xy) + xz */
|
||||
double xz; /**< xz in x' = (x * xx) + (y * xy) + xz */
|
||||
|
||||
double yx; /**< yx in y' = (x * yx) + (y * yy) + yz */
|
||||
double yy; /**< yy in y' = (x * yx) + (y * yy) + yz */
|
||||
double yz; /**< yz in y' = (x * yx) + (y * yy) + yz */
|
||||
|
||||
double zx; /**< zx in z' = (x * zx) + (y * zy) + zz */
|
||||
double zy; /**< zy in z' = (x * zx) + (y * zy) + zz */
|
||||
double zz; /**< zz in z' = (x * zx) + (y * zy) + zz */
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief Return the type of the given floating point matrix.
|
||||
*
|
||||
* @param m The floating point matrix.
|
||||
* @return The type of the matrix.
|
||||
*
|
||||
* This function returns the type of the matrix @p m. No check is done
|
||||
* on @p m.
|
||||
*/
|
||||
EAPI Eina_Matrix_Type eina_matrix3_type_get(const Eina_Matrix3 *m);
|
||||
|
||||
/**
|
||||
* @brief Set the values of the coefficients of the given floating
|
||||
* point matrix.
|
||||
*
|
||||
* @param m The floating point matrix.
|
||||
* @param xx The first coefficient value.
|
||||
* @param xy The second coefficient value.
|
||||
* @param xz The third coefficient value.
|
||||
* @param yx The fourth coefficient value.
|
||||
* @param yy The fifth coefficient value.
|
||||
* @param yz The sixth coefficient value.
|
||||
* @param zx The seventh coefficient value.
|
||||
* @param zy The heighth coefficient value.
|
||||
* @param zz The nineth coefficient value.
|
||||
*
|
||||
* This function sets the values of the coefficients of the matrix
|
||||
* @p m. No check is done on @p m.
|
||||
*
|
||||
* @see eina_matrix3_values_get()
|
||||
*/
|
||||
EAPI void eina_matrix3_values_set(Eina_Matrix3 *m,
|
||||
double xx, double xy, double xz,
|
||||
double yx, double yy, double yz,
|
||||
double zx, double zy, double zz);
|
||||
|
||||
/**
|
||||
* @brief Get the values of the coefficients of the given floating
|
||||
* point matrix.
|
||||
*
|
||||
* @param m The floating point matrix.
|
||||
* @param xx The first coefficient value.
|
||||
* @param xy The second coefficient value.
|
||||
* @param xz The third coefficient value.
|
||||
* @param yx The fourth coefficient value.
|
||||
* @param yy The fifth coefficient value.
|
||||
* @param yz The sixth coefficient value.
|
||||
* @param zx The seventh coefficient value.
|
||||
* @param zy The heighth coefficient value.
|
||||
* @param zz The nineth coefficient value.
|
||||
*
|
||||
* This function gets the values of the coefficients of the matrix
|
||||
* @p m. No check is done on @p m.
|
||||
*
|
||||
* @see eina_matrix3_values_set()
|
||||
*/
|
||||
EAPI void eina_matrix3_values_get(const Eina_Matrix3 *m,
|
||||
double *xx, double *xy, double *xz,
|
||||
double *yx, double *yy, double *yz,
|
||||
double *zx, double *zy, double *zz);
|
||||
|
||||
/**
|
||||
* @brief Get the values of the coefficients of the given fixed
|
||||
* point matrix.
|
||||
*
|
||||
* @param m The fixed point matrix.
|
||||
* @param xx The first coefficient value.
|
||||
* @param xy The second coefficient value.
|
||||
* @param xz The third coefficient value.
|
||||
* @param yx The fourth coefficient value.
|
||||
* @param yy The fifth coefficient value.
|
||||
* @param yz The sixth coefficient value.
|
||||
* @param zx The seventh coefficient value.
|
||||
* @param zy The heighth coefficient value.
|
||||
* @param zz The nineth coefficient value.
|
||||
*
|
||||
* This function gets the values of the coefficients of the matrix
|
||||
* @p m. No check is done on @p m.
|
||||
*
|
||||
* @see eina_matrix3_values_set()
|
||||
*/
|
||||
EAPI void eina_matrix3_fixed_values_get(const Eina_Matrix3 *m,
|
||||
Eina_F16p16 *xx, Eina_F16p16 *xy, Eina_F16p16 *xz,
|
||||
Eina_F16p16 *yx, Eina_F16p16 *yy, Eina_F16p16 *yz,
|
||||
Eina_F16p16 *zx, Eina_F16p16 *zy, Eina_F16p16 *zz);
|
||||
|
||||
/**
|
||||
* @brief Transform the given floating point matrix to the given fixed
|
||||
* point matrix.
|
||||
*
|
||||
* @param m The floating point matrix.
|
||||
* @param fm The fixed point matrix.
|
||||
*
|
||||
* This function transforms the floating point matrix @p m to a fixed
|
||||
* point matrix and store the coefficients into the fixed point matrix
|
||||
* @p fm.
|
||||
*/
|
||||
EAPI void eina_matrix3_matrix3_f16p16_to(const Eina_Matrix3 *m,
|
||||
Eina_Matrix3_F16p16 *fm);
|
||||
|
||||
/**
|
||||
* @brief Check whether the two given matrices are equal or not.
|
||||
*
|
||||
* @param m1 The first matrix.
|
||||
* @param m2 The second matrix.
|
||||
* @return EINA_TRUE if the two matrices are equal, 0 otherwise.
|
||||
*
|
||||
* This function return EINA_TRUE if thematrices @p m1 and @p m2 are
|
||||
* equal, EINA_FALSE otherwise. No check is done on the matrices.
|
||||
*/
|
||||
EAPI Eina_Bool eina_matrix3_equal(const Eina_Matrix3 *m1, const Eina_Matrix3 *m2);
|
||||
EAPI void eina_matrix3_compose(const Eina_Matrix3 *m1,
|
||||
const Eina_Matrix3 *m2,
|
||||
Eina_Matrix3 *dst);
|
||||
|
||||
/**
|
||||
* Set the matrix values for a translation
|
||||
* @param[in] m The matrix to set the translation values
|
||||
* @param[in] tx The X coordinate translate
|
||||
* @param[in] ty The Y coordinate translate
|
||||
*/
|
||||
EAPI void eina_matrix3_translate(Eina_Matrix3 *t, double tx, double ty);
|
||||
|
||||
/**
|
||||
* Set the matrix values for a scale
|
||||
* @param[in] m The matrix to set the scale values
|
||||
* @param[in] sx The X coordinate scale
|
||||
* @param[in] sy The Y coordinate scale
|
||||
*/
|
||||
EAPI void eina_matrix3_scale(Eina_Matrix3 *t, double sx, double sy);
|
||||
|
||||
/**
|
||||
* Set the matrix values for a rotation
|
||||
* @param[in] m The matrix to set the rotation values
|
||||
* @param[in] rad The radius to rotate the matrix
|
||||
*/
|
||||
EAPI void eina_matrix3_rotate(Eina_Matrix3 *t, double rad);
|
||||
|
||||
/**
|
||||
* @brief Set the given floating point matrix to the identity matrix.
|
||||
*
|
||||
* @param m The floating point matrix to set
|
||||
*
|
||||
* This function sets @p m to the identity matrix. No check is done on
|
||||
* @p m.
|
||||
*/
|
||||
EAPI void eina_matrix3_identity(Eina_Matrix3 *t);
|
||||
|
||||
/**
|
||||
* @brief Return the determinant of the given matrix.
|
||||
*
|
||||
* @param m The matrix.
|
||||
* @return The determinant.
|
||||
*
|
||||
* This function returns the determinant of the matrix @p m. No check
|
||||
* is done on @p m.
|
||||
*/
|
||||
EAPI double eina_matrix3_determinant(const Eina_Matrix3 *m);
|
||||
|
||||
/**
|
||||
* @brief Divide the given matrix by the given scalar.
|
||||
*
|
||||
* @param m The matrix.
|
||||
* @param scalar The scalar number.
|
||||
*
|
||||
* This function divides the matrix @p m by @p scalar. No check
|
||||
* is done on @p m.
|
||||
*/
|
||||
EAPI void eina_matrix3_divide(Eina_Matrix3 *m, double scalar);
|
||||
|
||||
/**
|
||||
* @brief Compute the inverse of the given matrix.
|
||||
*
|
||||
* @param m The matrix to inverse.
|
||||
* @param m2 The inverse matrix.
|
||||
*
|
||||
* This function inverse the matrix @p m and stores the result in
|
||||
* @p m2. No check is done on @p m or @p m2. If @p m can not be
|
||||
* invertible, then @p m2 is set to the identity matrix.
|
||||
*/
|
||||
EAPI void eina_matrix3_inverse(const Eina_Matrix3 *m, Eina_Matrix3 *m2);
|
||||
EAPI void eina_matrix3_transpose(const Eina_Matrix3 *m, Eina_Matrix3 *a);
|
||||
EAPI void eina_matrix3_cofactor(const Eina_Matrix3 *m, Eina_Matrix3 *a);
|
||||
EAPI void eina_matrix3_adjoint(const Eina_Matrix3 *m, Eina_Matrix3 *a);
|
||||
|
||||
EAPI void eina_matrix3_point_transform(const Eina_Matrix3 *m,
|
||||
double x, double y,
|
||||
double *xr, double *yr);
|
||||
EAPI void eina_matrix3_rectangle_transform(const Eina_Matrix3 *m,
|
||||
const Eina_Rectangle *r,
|
||||
const Eina_Quad *q);
|
||||
|
||||
/**
|
||||
* @brief Creates a projective matrix that maps a quadrangle to a quadrangle
|
||||
*/
|
||||
EAPI Eina_Bool eina_matrix3_quad_quad_map(Eina_Matrix3 *m,
|
||||
const Eina_Quad *src,
|
||||
const Eina_Quad *dst);
|
||||
EAPI Eina_Bool eina_matrix3_square_quad_map(Eina_Matrix3 *m,
|
||||
const Eina_Quad *q);
|
||||
EAPI Eina_Bool eina_matrix3_quad_square_map(Eina_Matrix3 *m,
|
||||
const Eina_Quad *q);
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
#endif /*EINA_MATRIX3_H_*/
|
|
@ -0,0 +1,127 @@
|
|||
/* EINA - EFL data type library
|
||||
* Copyright (C) 2007-2014 Jorge Luis Zapata
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library.
|
||||
* If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
# include "config.h"
|
||||
#endif
|
||||
|
||||
#include "eina_private.h"
|
||||
|
||||
#include <math.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "eina_rectangle.h"
|
||||
#include "eina_quad.h"
|
||||
|
||||
#define QUAD_X0(q) q->x0
|
||||
#define QUAD_Y0(q) q->y0
|
||||
#define QUAD_X1(q) q->x1
|
||||
#define QUAD_Y1(q) q->y1
|
||||
#define QUAD_X2(q) q->x2
|
||||
#define QUAD_Y2(q) q->y2
|
||||
#define QUAD_X3(q) q->x3
|
||||
#define QUAD_Y3(q) q->y3
|
||||
|
||||
/*============================================================================*
|
||||
* Local *
|
||||
*============================================================================*/
|
||||
/** @cond internal */
|
||||
/* FIXME make this function on API */
|
||||
static inline void _quad_dump(Eina_Quad *q)
|
||||
{
|
||||
printf("Q = %f %f, %f %f, %f %f, %f %f\n", QUAD_X0(q), QUAD_Y0(q), QUAD_X1(q), QUAD_Y1(q), QUAD_X2(q), QUAD_Y2(q), QUAD_X3(q), QUAD_Y3(q));
|
||||
}
|
||||
/** @endcond */
|
||||
|
||||
/*============================================================================*
|
||||
* API *
|
||||
*============================================================================*/
|
||||
EAPI void
|
||||
eina_quad_rectangle_to(const Eina_Quad *q,
|
||||
Eina_Rectangle *r)
|
||||
{
|
||||
double xmin, ymin, xmax, ymax;
|
||||
/* FIXME this code is very ugly, for sure there must be a better
|
||||
* implementation */
|
||||
xmin = QUAD_X0(q) < QUAD_X1(q) ? QUAD_X0(q) : QUAD_X1(q);
|
||||
xmin = xmin < QUAD_X2(q) ? xmin : QUAD_X2(q);
|
||||
xmin = xmin < QUAD_X3(q) ? xmin : QUAD_X3(q);
|
||||
|
||||
ymin = QUAD_Y0(q) < QUAD_Y1(q) ? QUAD_Y0(q) : QUAD_Y1(q);
|
||||
ymin = ymin < QUAD_Y2(q) ? ymin : QUAD_Y2(q);
|
||||
ymin = ymin < QUAD_Y3(q) ? ymin : QUAD_Y3(q);
|
||||
|
||||
xmax = QUAD_X0(q) > QUAD_X1(q) ? QUAD_X0(q) : QUAD_X1(q);
|
||||
xmax = xmax > QUAD_X2(q) ? xmax : QUAD_X2(q);
|
||||
xmax = xmax > QUAD_X3(q) ? xmax : QUAD_X3(q);
|
||||
|
||||
ymax = QUAD_Y0(q) > QUAD_Y1(q) ? QUAD_Y0(q) : QUAD_Y1(q);
|
||||
ymax = ymax > QUAD_Y2(q) ? ymax : QUAD_Y2(q);
|
||||
ymax = ymax > QUAD_Y3(q) ? ymax : QUAD_Y3(q);
|
||||
|
||||
r->x = lround(xmin);
|
||||
r->w = lround(xmax) - r->x;
|
||||
r->y = lround(ymin);
|
||||
r->h = lround(ymax) - r->y;
|
||||
}
|
||||
|
||||
EAPI void
|
||||
eina_quad_rectangle_from(Eina_Quad *q,
|
||||
const Eina_Rectangle *r)
|
||||
{
|
||||
QUAD_X0(q) = r->x;
|
||||
QUAD_Y0(q) = r->y;
|
||||
QUAD_X1(q) = r->x + r->w;
|
||||
QUAD_Y1(q) = r->y;
|
||||
QUAD_X2(q) = r->x + r->w;
|
||||
QUAD_Y2(q) = r->y + r->h;
|
||||
QUAD_X3(q) = r->x;
|
||||
QUAD_Y3(q) = r->y + r->h;
|
||||
}
|
||||
|
||||
EAPI void eina_quad_coords_get(const Eina_Quad *q,
|
||||
double *qx0, double *qy0,
|
||||
double *qx1, double *qy1,
|
||||
double *qx2, double *qy2,
|
||||
double *qx3, double *qy3)
|
||||
{
|
||||
if (qx0) *qx0 = q->x0;
|
||||
if (qy0) *qy0 = q->y0;
|
||||
if (qx1) *qx1 = q->x1;
|
||||
if (qy1) *qy1 = q->y1;
|
||||
if (qx2) *qx2 = q->x2;
|
||||
if (qy2) *qy2 = q->y2;
|
||||
if (qx3) *qx3 = q->x3;
|
||||
if (qy3) *qy3 = q->y3;
|
||||
}
|
||||
|
||||
EAPI void eina_quad_coords_set(Eina_Quad *q,
|
||||
double qx0, double qy0,
|
||||
double qx1, double qy1,
|
||||
double qx2, double qy2,
|
||||
double qx3, double qy3)
|
||||
{
|
||||
QUAD_X0(q) = qx0;
|
||||
QUAD_Y0(q) = qy0;
|
||||
QUAD_X1(q) = qx1;
|
||||
QUAD_Y1(q) = qy1;
|
||||
QUAD_X2(q) = qx2;
|
||||
QUAD_Y2(q) = qy2;
|
||||
QUAD_X3(q) = qx3;
|
||||
QUAD_Y3(q) = qy3;
|
||||
}
|
|
@ -0,0 +1,67 @@
|
|||
/* EINA - EFL data type library
|
||||
* Copyright (C) 2007-2014 Jorge Luis Zapata
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library.
|
||||
* If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef EINA_QUAD_H_
|
||||
#define EINA_QUAD_H_
|
||||
|
||||
/**
|
||||
* @file
|
||||
* @ender_group{Eina_Quad}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup Eina_Quad Quadrangles
|
||||
* @ingroup Eina_Basic
|
||||
* @brief Quadrangles operations
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* Quadrangle definition
|
||||
*/
|
||||
typedef struct _Eina_Quad
|
||||
{
|
||||
double x0; /**< Top left x coordinate */
|
||||
double y0; /**< Top left y coordinate */
|
||||
double x1; /**< Top right x coordinate */
|
||||
double y1; /**< Top right y coordinate */
|
||||
double x2; /**< Bottom right x coordinate */
|
||||
double y2; /**< Bottom right y coordinate */
|
||||
double x3; /**< Bottom left x coordinate */
|
||||
double y3; /**< Bottom left y coordinate */
|
||||
} Eina_Quad;
|
||||
|
||||
EAPI void eina_quad_rectangle_to(const Eina_Quad *q,
|
||||
Eina_Rectangle *r);
|
||||
EAPI void eina_quad_rectangle_from(Eina_Quad *q,
|
||||
const Eina_Rectangle *r);
|
||||
EAPI void eina_quad_coords_set(Eina_Quad *q,
|
||||
double x1, double y1,
|
||||
double x2, double y2,
|
||||
double x3, double y3,
|
||||
double x4, double y4);
|
||||
EAPI void eina_quad_coords_get(const Eina_Quad *q,
|
||||
double *x1, double *y1,
|
||||
double *x2, double *y2,
|
||||
double *x3, double *y3,
|
||||
double *x4, double *y4);
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif
|
Loading…
Reference in New Issue