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/**************************************************************************/
/* cairo-ocaml -- Objective Caml bindings for Cairo */
/* Copyright © 2004-2005 Olivier Andrieu */
/* */
/* This code is free software and is licensed under the terms of the */
/* GNU Lesser General Public License version 2.1 (the "LGPL"). */
/**************************************************************************/
#include "ml_cairo.h"
#ifdef ARCH_ALIGN_DOUBLE
void
ml_convert_cairo_matrix_in (value v, cairo_matrix_t *mat)
{
mat->xx = Double_field (v, 0);
mat->yx = Double_field (v, 1);
mat->xy = Double_field (v, 2);
mat->yy = Double_field (v, 3);
mat->x0 = Double_field (v, 4);
mat->y0 = Double_field (v, 5);
}
value
ml_convert_cairo_matrix_out (const cairo_matrix_t *mat)
{
value v;
v = caml_alloc_small (6 * Double_wosize, Double_array_tag);
Store_double_field (v, 0, mat->xx);
Store_double_field (v, 1, mat->yx);
Store_double_field (v, 2, mat->xy);
Store_double_field (v, 3, mat->yy);
Store_double_field (v, 4, mat->x0);
Store_double_field (v, 5, mat->y0);
return v;
}
#endif
/* matrix_init */
/* matrix_init_identity */
/* matrix_init_translate */
/* matrix_init_scale */
/* matrix_init_rotate */
CAMLprim value
ml_cairo_matrix_translate (value m, value x, value y)
{
#ifndef ARCH_ALIGN_DOUBLE
CAMLparam3(m, x, y);
value v = cairo_matrix_alloc();
cairo_copy_matrix (v, m);
cairo_matrix_translate (cairo_matrix_t_val (v), Double_val (x), Double_val (y));
CAMLreturn (v);
#else
cairo_matrix_t mat;
ml_convert_cairo_matrix_in (m, &mat);
cairo_matrix_translate (&mat, Double_val (x), Double_val (y));
return ml_convert_cairo_matrix_out (&mat);
#endif
}
CAMLprim value
ml_cairo_matrix_scale (value m, value x, value y)
{
#ifndef ARCH_ALIGN_DOUBLE
CAMLparam3(m, x, y);
value v = cairo_matrix_alloc();
cairo_copy_matrix (v, m);
cairo_matrix_scale (cairo_matrix_t_val (v), Double_val (x), Double_val (y));
CAMLreturn (v);
#else
cairo_matrix_t mat;
ml_convert_cairo_matrix_in (m, &mat);
cairo_matrix_scale (&mat, Double_val (x), Double_val (y));
return ml_convert_cairo_matrix_out (&mat);
#endif
}
CAMLprim value
ml_cairo_matrix_rotate (value m, value a)
{
#ifndef ARCH_ALIGN_DOUBLE
CAMLparam2(m, a);
value v = cairo_matrix_alloc();
cairo_copy_matrix (v, m);
cairo_matrix_rotate (cairo_matrix_t_val (v), Double_val (a));
CAMLreturn (v);
#else
cairo_matrix_t mat;
ml_convert_cairo_matrix_in (m, &mat);
cairo_matrix_rotate (&mat, Double_val (a));
return ml_convert_cairo_matrix_out (&mat);
#endif
}
CAMLprim value
ml_cairo_matrix_invert (value m)
{
#ifndef ARCH_ALIGN_DOUBLE
CAMLparam1(m);
value v = cairo_matrix_alloc();
cairo_copy_matrix (v, m);
cairo_matrix_invert (cairo_matrix_t_val (v));
CAMLreturn (v);
#else
cairo_matrix_t mat;
ml_convert_cairo_matrix_in (m, &mat);
cairo_matrix_invert (&mat);
return ml_convert_cairo_matrix_out (&mat);
#endif
}
CAMLprim value
ml_cairo_matrix_multiply (value a, value b)
{
#ifndef ARCH_ALIGN_DOUBLE
CAMLparam2(a, b);
value r = cairo_matrix_alloc();
cairo_matrix_multiply (cairo_matrix_t_val (r),
cairo_matrix_t_val (a),
cairo_matrix_t_val (b));
CAMLreturn (r);
#else
cairo_matrix_t r, m_a, m_b;
ml_convert_cairo_matrix_in (a, &m_a);
ml_convert_cairo_matrix_in (b, &m_b);
cairo_matrix_multiply (&r, &m_a, &m_b);
return ml_convert_cairo_matrix_out (&r);
#endif
}
CAMLprim value
ml_cairo_matrix_transform_distance (value m, value p)
{
double x = Double_field (p, 0);
double y = Double_field (p, 1);
#ifndef ARCH_ALIGN_DOUBLE
cairo_matrix_transform_distance (cairo_matrix_t_val (m), &x, &y);
#else
cairo_matrix_t mat;
ml_convert_cairo_matrix_in (m, &mat);
cairo_matrix_transform_distance (&mat, &x, &y);
#endif
return ml_cairo_point (x, y);
}
CAMLprim value
ml_cairo_matrix_transform_point (value m, value p)
{
double x = Double_field (p, 0);
double y = Double_field (p, 1);
#ifndef ARCH_ALIGN_DOUBLE
cairo_matrix_transform_point (cairo_matrix_t_val (m), &x, &y);
#else
cairo_matrix_t mat;
ml_convert_cairo_matrix_in (m, &mat);
cairo_matrix_transform_point (&mat, &x, &y);
#endif
return ml_cairo_point (x, y);
}
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