EAPI void
eina_matrix3_compose(const Eina_Matrix3 *m1,
const Eina_Matrix3 *m2,
Eina_Matrix3 *dst)
{
double a11, a12, a13, a21, a22, a23, a31, a32, a33;
a11 = (MATRIX_XX(m1) * MATRIX_XX(m2)) + (MATRIX_XY(m1) * MATRIX_YX(m2)) + (MATRIX_XZ(m1) * MATRIX_ZX(m2));
a12 = (MATRIX_XX(m1) * MATRIX_XY(m2)) + (MATRIX_XY(m1) * MATRIX_YY(m2)) + (MATRIX_XZ(m1) * MATRIX_ZY(m2));
a13 = (MATRIX_XX(m1) * MATRIX_XZ(m2)) + (MATRIX_XY(m1) * MATRIX_YZ(m2)) + (MATRIX_XZ(m1) * MATRIX_ZZ(m2));
a21 = (MATRIX_YX(m1) * MATRIX_XX(m2)) + (MATRIX_YY(m1) * MATRIX_YX(m2)) + (MATRIX_YZ(m1) * MATRIX_ZX(m2));
a22 = (MATRIX_YX(m1) * MATRIX_XY(m2)) + (MATRIX_YY(m1) * MATRIX_YY(m2)) + (MATRIX_YZ(m1) * MATRIX_ZY(m2));
a23 = (MATRIX_YX(m1) * MATRIX_XZ(m2)) + (MATRIX_YY(m1) * MATRIX_YZ(m2)) + (MATRIX_YZ(m1) * MATRIX_ZZ(m2));
a31 = (MATRIX_ZX(m1) * MATRIX_XX(m2)) + (MATRIX_ZY(m1) * MATRIX_YX(m2)) + (MATRIX_ZZ(m1) * MATRIX_ZX(m2));
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 void
eina_matrix3_cofactor(const Eina_Matrix3 *m, Eina_Matrix3 *a)
{
double a11, a12, a13, a21, a22, a23, a31, a32, a33;
a11 = (MATRIX_YY(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZY(m));
a12 = -1 * ((MATRIX_YX(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZX(m)));
a13 = (MATRIX_YX(m) * MATRIX_ZY(m)) - (MATRIX_YY(m) * MATRIX_ZX(m));
a21 = -1 * ((MATRIX_XY(m) * MATRIX_ZZ(m)) - (MATRIX_XZ(m) * MATRIX_ZY(m)));
a22 = (MATRIX_XX(m) * MATRIX_ZZ(m)) - (MATRIX_XZ(m) * MATRIX_ZX(m));
a23 = -1 * ((MATRIX_XX(m) * MATRIX_ZY(m)) - (MATRIX_XY(m) * MATRIX_ZX(m)));
a31 = (MATRIX_XY(m) * MATRIX_YZ(m)) - (MATRIX_XZ(m) * MATRIX_YY(m));
a32 = -1 * ((MATRIX_XX(m) * MATRIX_YZ(m)) - (MATRIX_XZ(m) * MATRIX_YX(m)));
a33 = (MATRIX_XX(m) * MATRIX_YY(m)) - (MATRIX_XY(m) * MATRIX_YX(m));
MATRIX_XX(a) = a11;
MATRIX_XY(a) = a12;
MATRIX_XZ(a) = a13;
MATRIX_YX(a) = a21;
MATRIX_YY(a) = a22;
MATRIX_YZ(a) = a23;
MATRIX_ZX(a) = a31;
MATRIX_ZY(a) = a32;
MATRIX_ZZ(a) = a33;
}
/**
* @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 enesim_matrix_determinant(const Enesim_Matrix *m)
{
double det;
det = MATRIX_XX(m) * ((MATRIX_YY(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZY(m)));
det -= MATRIX_XY(m) * ((MATRIX_YX(m) * MATRIX_ZZ(m)) - (MATRIX_YZ(m) * MATRIX_ZX(m)));
det += MATRIX_XZ(m) * ((MATRIX_YX(m) * MATRIX_ZY(m)) - (MATRIX_YY(m) * MATRIX_ZX(m)));
return det;
}
EAPI void
eina_matrix4_matrix3_to(Eina_Matrix3 *m3, const Eina_Matrix4 *m4)
{
MATRIX_XX(m3) = MATRIX_XX(m4);
MATRIX_XY(m3) = MATRIX_XY(m4);
MATRIX_XZ(m3) = MATRIX_XZ(m4);
MATRIX_YX(m3) = MATRIX_YX(m4);
MATRIX_YY(m3) = MATRIX_YY(m4);
MATRIX_YZ(m3) = MATRIX_YZ(m4);
MATRIX_ZX(m3) = MATRIX_ZX(m4);
MATRIX_ZY(m3) = MATRIX_ZY(m4);
MATRIX_ZZ(m3) = MATRIX_ZZ(m4);
}
EAPI void enesim_matrix_transpose(const Enesim_Matrix *m, Enesim_Matrix *a)
{
MATRIX_XX(a) = MATRIX_XX(m);
MATRIX_XY(a) = MATRIX_YX(m);
MATRIX_XZ(a) = MATRIX_ZX(m);
MATRIX_YX(a) = MATRIX_XY(m);
MATRIX_YY(a) = MATRIX_YY(m);
MATRIX_YZ(a) = MATRIX_ZY(m);
MATRIX_ZX(a) = MATRIX_XZ(m);
MATRIX_ZY(a) = MATRIX_YZ(m);
MATRIX_ZZ(a) = MATRIX_ZZ(m);
}
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 void
eina_matrix3_transpose(const Eina_Matrix3 *m, Eina_Matrix3 *a)
{
MATRIX_XX(a) = MATRIX_XX(m);
MATRIX_XY(a) = MATRIX_YX(m);
MATRIX_XZ(a) = MATRIX_ZX(m);
MATRIX_YX(a) = MATRIX_XY(m);
MATRIX_YY(a) = MATRIX_YY(m);
MATRIX_YZ(a) = MATRIX_ZY(m);
MATRIX_ZX(a) = MATRIX_XZ(m);
MATRIX_ZY(a) = MATRIX_YZ(m);
MATRIX_ZZ(a) = MATRIX_ZZ(m);
}
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
Eina_Matrix3 tmp;
MATRIX_XX(&tmp) = c;
MATRIX_XY(&tmp) = -s;
MATRIX_XZ(&tmp) = 0;
MATRIX_YX(&tmp) = s;
MATRIX_YY(&tmp) = c;
MATRIX_YZ(&tmp) = 0;
MATRIX_ZX(&tmp) = 0;
MATRIX_ZY(&tmp) = 0;
MATRIX_ZZ(&tmp) = 1;
eina_matrix3_compose(m, &tmp, m);
}
EAPI Eina_Bool enesim_matrix_quad_square_map(Enesim_Matrix *m,
const Enesim_Quad *q)
{
Enesim_Matrix tmp;
/* compute square to quad */
if (!enesim_matrix_square_quad_map(&tmp, q))
return EINA_FALSE;
enesim_matrix_inverse(&tmp, m);
/* make the projective matrix always have 1 on zz */
if (MATRIX_ZZ(m) != 1)
{
enesim_matrix_divide(m, MATRIX_ZZ(m));
}
return EINA_TRUE;
}
EAPI Eina_Matrix_Type
eina_matrix4_type_get(const Eina_Matrix4 *m)
{
if ((MATRIX_XX(m) == 1) && (MATRIX_XY(m) == 0) && (MATRIX_XZ(m) == 0) && (MATRIX_XW(m) == 0) &&
(MATRIX_YX(m) == 0) && (MATRIX_YY(m) == 1) && (MATRIX_YZ(m) == 0) && (MATRIX_YW(m) == 0) &&
(MATRIX_ZX(m) == 0) && (MATRIX_ZY(m) == 0) && (MATRIX_ZZ(m) == 1) && (MATRIX_ZW(m) == 0) &&
(MATRIX_WX(m) == 0) && (MATRIX_WY(m) == 0) && (MATRIX_WZ(m) == 0) && (MATRIX_WW(m) == 1))
return EINA_MATRIX_TYPE_IDENTITY;
return EINA_MATRIX_TYPE_AFFINE;
}
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 void enesim_matrix_point_transform(const Enesim_Matrix *m, double x, double y, double *xr, double *yr)
{
double xrr, yrr;
if (!MATRIX_ZX(m) && !MATRIX_ZY(m))
{
xrr = (x * MATRIX_XX(m) + y * MATRIX_XY(m) + MATRIX_XZ(m));
yrr = (x * MATRIX_YX(m) + y * MATRIX_YY(m) + MATRIX_YZ(m));
}
else
{
xrr = (x * MATRIX_XX(m) + y * MATRIX_XY(m) + MATRIX_XZ(m)) /
(x * MATRIX_ZX(m) + y * MATRIX_ZY(m) + MATRIX_ZZ(m));
yrr = (x * MATRIX_YX(m) + y * MATRIX_YY(m) + MATRIX_YZ(m)) /
(x * MATRIX_ZX(m) + y * MATRIX_ZY(m) + MATRIX_ZZ(m));
}
if (xr) *xr = xrr;
if (yr) *yr = yrr;
}
EAPI void
eina_matrix3_matrix4_to(Eina_Matrix4 *m4, const Eina_Matrix3 *m3)
{
MATRIX_XX(m4) = MATRIX_XX(m3);
MATRIX_XY(m4) = MATRIX_XY(m3);
MATRIX_XZ(m4) = MATRIX_XZ(m3);
MATRIX_XW(m4) = 0;
MATRIX_YX(m4) = MATRIX_YX(m3);
MATRIX_YY(m4) = MATRIX_YY(m3);
MATRIX_YZ(m4) = MATRIX_YZ(m3);
MATRIX_YW(m4) = 0;
MATRIX_ZX(m4) = MATRIX_ZX(m3);
MATRIX_ZY(m4) = MATRIX_ZY(m3);
MATRIX_ZZ(m4) = MATRIX_ZZ(m3);
MATRIX_ZW(m4) = 0;
MATRIX_WX(m4) = 0;
MATRIX_WY(m4) = 0;
MATRIX_WZ(m4) = 0;
MATRIX_WW(m4) = 1;
}
/**
* @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 enesim_matrix_identity(Enesim_Matrix *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;
}
/**
* 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 enesim_matrix_translate(Enesim_Matrix *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;
}
/**
* 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 enesim_matrix_scale(Enesim_Matrix *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;
}
/**
* @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 enesim_matrix_f16p16_identity(Enesim_Matrix_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;
}
/**
* @brief Get the values of the coefficients of the given floating
* point matrix.
*
* @param m The floating point matrix.
* @param a The first coefficient value.
* @param b The second coefficient value.
* @param c The third coefficient value.
* @param d The fourth coefficient value.
* @param e The fifth coefficient value.
* @param f The sixth coefficient value.
* @param g The seventh coefficient value.
* @param h The heighth coefficient value.
* @param i 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 enesim_matrix_values_set()
*/
EAPI void enesim_matrix_values_get(const Enesim_Matrix *m, double *a, double *b, double *c,
double *d, double *e, double *f, double *g, double *h, double *i)
{
if (a) *a = MATRIX_XX(m);
if (b) *b = MATRIX_XY(m);
if (c) *c = MATRIX_XZ(m);
if (d) *d = MATRIX_YX(m);
if (e) *e = MATRIX_YY(m);
if (f) *f = MATRIX_YZ(m);
if (g) *g = MATRIX_ZX(m);
if (h) *h = MATRIX_ZY(m);
if (i) *i = MATRIX_ZZ(m);
}
/**
* @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 Enesim_Matrix_Type enesim_matrix_f16p16_type_get(const Enesim_Matrix_F16p16 *m)
{
if ((MATRIX_ZX(m) != 0) || (MATRIX_ZY(m) != 0) || (MATRIX_ZZ(m) != 65536))
return ENESIM_MATRIX_TYPE_PROJECTIVE;
else
{
if ((MATRIX_XX(m) == 65536) && (MATRIX_XY(m) == 0) && (MATRIX_XZ(m) == 0) &&
(MATRIX_YX(m) == 0) && (MATRIX_YY(m) == 65536) && (MATRIX_YZ(m) == 0))
return ENESIM_MATRIX_TYPE_IDENTITY;
else
return ENESIM_MATRIX_TYPE_AFFINE;
}
}
/**
* @brief Set the values of the coefficients of the given floating
* point matrix.
*
* @param m The floating point matrix.
* @param a The first coefficient value.
* @param b The second coefficient value.
* @param c The third coefficient value.
* @param d The fourth coefficient value.
* @param e The fifth coefficient value.
* @param f The sixth coefficient value.
* @param g The seventh coefficient value.
* @param h The heighth coefficient value.
* @param i 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 enesim_matrix_values_get()
*/
EAPI void enesim_matrix_values_set(Enesim_Matrix *m, double a, double b, double c,
double d, double e, double f, double g, double h, double i)
{
MATRIX_XX(m) = a;
MATRIX_XY(m) = b;
MATRIX_XZ(m) = c;
MATRIX_YX(m) = d;
MATRIX_YY(m) = e;
MATRIX_YZ(m) = f;
MATRIX_ZX(m) = g;
MATRIX_ZY(m) = h;
MATRIX_ZZ(m) = i;
}
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 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;
}
/**
* @brief Get the values of the coefficients of the given fixed
* point matrix.
*
* @param m The fixed point matrix.
* @param a The first coefficient value.
* @param b The second coefficient value.
* @param c The third coefficient value.
* @param d The fourth coefficient value.
* @param e The fifth coefficient value.
* @param f The sixth coefficient value.
* @param g The seventh coefficient value.
* @param h The heighth coefficient value.
* @param i 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 enesim_matrix_values_set()
*/
EAPI void enesim_matrix_fixed_values_get(const Enesim_Matrix *m, Eina_F16p16 *a,
Eina_F16p16 *b, Eina_F16p16 *c, Eina_F16p16 *d, Eina_F16p16 *e,
Eina_F16p16 *f, Eina_F16p16 *g, Eina_F16p16 *h, Eina_F16p16 *i)
{
if (a) *a = eina_f16p16_double_from(MATRIX_XX(m));
if (b) *b = eina_f16p16_double_from(MATRIX_XY(m));
if (c) *c = eina_f16p16_double_from(MATRIX_XZ(m));
if (d) *d = eina_f16p16_double_from(MATRIX_YX(m));
if (e) *e = eina_f16p16_double_from(MATRIX_YY(m));
if (f) *f = eina_f16p16_double_from(MATRIX_YZ(m));
if (g) *g = eina_f16p16_double_from(MATRIX_ZX(m));
if (h) *h = eina_f16p16_double_from(MATRIX_ZY(m));
if (i) *i = eina_f16p16_double_from(MATRIX_ZZ(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 enesim_matrix_divide(Enesim_Matrix *m, double scalar)
{
MATRIX_XX(m) /= scalar;
MATRIX_XY(m) /= scalar;
MATRIX_XZ(m) /= scalar;
MATRIX_YX(m) /= scalar;
MATRIX_YY(m) /= scalar;
MATRIX_YZ(m) /= scalar;
MATRIX_ZX(m) /= scalar;
MATRIX_ZY(m) /= scalar;
MATRIX_ZZ(m) /= scalar;
}
/*============================================================================*
* API *
*============================================================================*/
EAPI Eina_Matrix_Type
eina_matrix3_type_get(const Eina_Matrix3 *m)
{
if ((MATRIX_ZX(m) != 0) || (MATRIX_ZY(m) != 0) || (MATRIX_ZZ(m) != 1))
return EINA_MATRIX_TYPE_PROJECTIVE;
else
{
if ((MATRIX_XX(m) == 1) && (MATRIX_XY(m) == 0) && (MATRIX_XZ(m) == 0) &&
(MATRIX_YX(m) == 0) && (MATRIX_YY(m) == 1) && (MATRIX_YZ(m) == 0))
return EINA_MATRIX_TYPE_IDENTITY;
else
return EINA_MATRIX_TYPE_AFFINE;
}
}
EAPI void
eina_matrix3_scale(Eina_Matrix3 *m, double sx, double sy)
{
Eina_Matrix3 tmp;
MATRIX_XX(&tmp) = sx;
MATRIX_XY(&tmp) = 0;
MATRIX_XZ(&tmp) = 0;
MATRIX_YX(&tmp) = 0;
MATRIX_YY(&tmp) = sy;
MATRIX_YZ(&tmp) = 0;
MATRIX_ZX(&tmp) = 0;
MATRIX_ZY(&tmp) = 0;
MATRIX_ZZ(&tmp) = 1;
eina_matrix3_compose(m, &tmp, m);
}
EAPI void
eina_matrix3_translate(Eina_Matrix3 *m, double tx, double ty)
{
Eina_Matrix3 tmp;
MATRIX_XX(&tmp) = 1;
MATRIX_XY(&tmp) = 0;
MATRIX_XZ(&tmp) = tx;
MATRIX_YX(&tmp) = 0;
MATRIX_YY(&tmp) = 1;
MATRIX_YZ(&tmp) = ty;
MATRIX_ZX(&tmp) = 0;
MATRIX_ZY(&tmp) = 0;
MATRIX_ZZ(&tmp) = 1;
eina_matrix3_compose(m, &tmp, m);
}
EAPI void
eina_matrix3_divide(Eina_Matrix3 *m, double scalar)
{
MATRIX_XX(m) /= scalar;
MATRIX_XY(m) /= scalar;
MATRIX_XZ(m) /= scalar;
MATRIX_YX(m) /= scalar;
MATRIX_YY(m) /= scalar;
MATRIX_YZ(m) /= scalar;
MATRIX_ZX(m) /= scalar;
MATRIX_ZY(m) /= scalar;
MATRIX_ZZ(m) /= scalar;
}
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)
{
if (xx) *xx = MATRIX_XX(m);
if (xy) *xy = MATRIX_XY(m);
if (xz) *xz = MATRIX_XZ(m);
if (yx) *yx = MATRIX_YX(m);
if (yy) *yy = MATRIX_YY(m);
if (yz) *yz = MATRIX_YZ(m);
if (zx) *zx = MATRIX_ZX(m);
if (zy) *zy = MATRIX_ZY(m);
if (zz) *zz = MATRIX_ZZ(m);
}
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)
{
if (xx) *xx = eina_f16p16_double_from(MATRIX_XX(m));
if (xy) *xy = eina_f16p16_double_from(MATRIX_XY(m));
if (xz) *xz = eina_f16p16_double_from(MATRIX_XZ(m));
if (yx) *yx = eina_f16p16_double_from(MATRIX_YX(m));
if (yy) *yy = eina_f16p16_double_from(MATRIX_YY(m));
if (yz) *yz = eina_f16p16_double_from(MATRIX_YZ(m));
if (zx) *zx = eina_f16p16_double_from(MATRIX_ZX(m));
if (zy) *zy = eina_f16p16_double_from(MATRIX_ZY(m));
if (zz) *zz = eina_f16p16_double_from(MATRIX_ZZ(m));
}