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matplotlib/src/path_cleanup.cpp at master · flothesof/matplotlib · GitHub
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/*
-*- mode: c++; c-basic-offset: 4 -*-
*/
#
include
<
Python.h
>
#
define
NO_IMPORT_ARRAY
#
include
"
numpy/arrayobject.h
"
#
include
"
py_converters.h
"
#
include
"
py_adaptors.h
"
#
include
"
agg_conv_transform.h
"
#
include
"
path_converters.h
"
class
PathCleanupIterator
{
typedef
agg::conv_transform<py::PathIterator>
transformed_path_t
;
typedef
PathNanRemover<
transformed_path_t
>
nan_removal_t
;
typedef
PathClipper<
nan_removal_t
>
clipped_t
;
typedef
PathSnapper<
clipped_t
>
snapped_t
;
typedef
PathSimplifier<
snapped_t
>
simplify_t
;
typedef
Sketch<
simplify_t
>
sketch_t
;
py::PathIterator m_path_iter;
agg::trans_affine m_transform;
transformed_path_t
m_transformed;
nan_removal_t
m_nan_removed;
clipped_t
m_clipped;
snapped_t
m_snapped;
simplify_t
m_simplify;
sketch_t
m_sketch;
public:
PathCleanupIterator
(PyObject *path,
agg::trans_affine trans,
bool
remove_nans,
bool
do_clip,
const
agg::rect_base<
double
> &rect,
e_snap_mode snap_mode,
double
stroke_width,
bool
do_simplify,
double
sketch_scale,
double
sketch_length,
double
sketch_randomness)
: m_transform(trans),
m_transformed
(m_path_iter, m_transform),
m_nan_removed(m_transformed, remove_nans, m_path_iter.has_curves()),
m_clipped(m_nan_removed, do_clip, rect),
m_snapped(m_clipped, snap_mode, m_path_iter.total_vertices(), stroke_width),
m_simplify(m_snapped,
do_simplify && m_path_iter.should_simplify(),
m_path_iter.simplify_threshold()),
m_sketch(m_simplify, sketch_scale, sketch_length, sketch_randomness)
{
convert_path
(path, &m_path_iter);
Py_INCREF
(path);
m_path_iter.
rewind
(
0
);
}
unsigned
vertex
(
double
*x,
double
*y)
{
return
m_simplify.
vertex
(x, y);
}
};
extern
"
C
"
{
void
*
get_path_iterator
(PyObject *path,
PyObject *trans,
int
remove_nans,
int
do_clip,
double
rect[
4
],
e_snap_mode snap_mode,
double
stroke_width,
int
do_simplify,
double
sketch_scale,
double
sketch_length,
double
sketch_randomness)
{
agg::trans_affine agg_trans;
if
(!
convert_trans_affine
(trans, &agg_trans)) {
return
NULL
;
}
agg::rect_base<
double
>
clip_rect
(rect[
0
], rect[
1
], rect[
2
], rect[
3
]);
PathCleanupIterator *pipeline =
new
PathCleanupIterator
(path,
agg_trans,
remove_nans !=
0
,
do_clip !=
0
,
clip_rect,
snap_mode,
stroke_width,
do_simplify !=
0
,
sketch_scale,
sketch_length,
sketch_randomness);
return
(
void
*)pipeline;
}
unsigned
get_vertex
(
void
*pipeline,
double
*x,
double
*y)
{
PathCleanupIterator *pipeline_iter = (PathCleanupIterator *)pipeline;
unsigned
code = pipeline_iter->
vertex
(x, y);
return
code;
}
void
free_path_iterator
(
void
*pipeline)
{
PathCleanupIterator *pipeline_iter = (PathCleanupIterator *)pipeline;
delete
pipeline_iter;
}
}
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