1340 lines
40 KiB
C
1340 lines
40 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup mathutils
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*
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* This file defines the 'mathutils.bvhtree' module, a general purpose module to access
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* blenders bvhtree for mesh surface nearest-element search and ray casting.
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*/
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#include <Python.h>
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#include "MEM_guardedalloc.h"
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#include "BLI_ghash.h"
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#include "BLI_kdopbvh.h"
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#include "BLI_math.h"
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#include "BLI_memarena.h"
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#include "BLI_polyfill_2d.h"
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#include "BLI_utildefines.h"
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#include "BKE_bvhutils.h"
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#include "../generic/py_capi_utils.h"
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#include "../generic/python_utildefines.h"
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#include "mathutils.h"
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#include "mathutils_bvhtree.h" /* own include */
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#ifndef MATH_STANDALONE
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# include "DNA_mesh_types.h"
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# include "DNA_meshdata_types.h"
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# include "DNA_object_types.h"
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# include "BKE_customdata.h"
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# include "BKE_editmesh_bvh.h"
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# include "BKE_lib_id.h"
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# include "BKE_mesh.h"
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# include "BKE_mesh_runtime.h"
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# include "DEG_depsgraph_query.h"
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# include "bmesh.h"
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# include "../bmesh/bmesh_py_types.h"
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#endif /* MATH_STANDALONE */
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#include "BLI_strict_flags.h"
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/* -------------------------------------------------------------------- */
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/** \name Documentation String (snippets)
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* \{ */
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#define PYBVH_FIND_GENERIC_DISTANCE_DOC \
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" :arg distance: Maximum distance threshold.\n" \
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" :type distance: float\n"
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#define PYBVH_FIND_GENERIC_RETURN_DOC \
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" :return: Returns a tuple\n" \
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" (:class:`Vector` location, :class:`Vector` normal, int index, float distance),\n" \
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" Values will all be None if no hit is found.\n" \
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" :rtype: :class:`tuple`\n"
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#define PYBVH_FIND_GENERIC_RETURN_LIST_DOC \
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" :return: Returns a list of tuples\n" \
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" (:class:`Vector` location, :class:`Vector` normal, int index, float distance),\n" \
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" :rtype: :class:`list`\n"
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#define PYBVH_FROM_GENERIC_EPSILON_DOC \
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" :arg epsilon: Increase the threshold for detecting overlap and raycast hits.\n" \
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" :type epsilon: float\n"
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/** \} */
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/* sqrt(FLT_MAX) */
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#define PYBVH_MAX_DIST_STR "1.84467e+19"
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static const float max_dist_default = 1.844674352395373e+19f;
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static const char PY_BVH_TREE_TYPE_DEFAULT = 4;
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static const char PY_BVH_AXIS_DEFAULT = 6;
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typedef struct {
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PyObject_HEAD BVHTree *tree;
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float epsilon;
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float (*coords)[3];
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uint (*tris)[3];
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uint coords_len, tris_len;
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/* Optional members */
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/* aligned with 'tris' */
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int *orig_index;
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/* aligned with array that 'orig_index' points to */
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float (*orig_normal)[3];
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} PyBVHTree;
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/* -------------------------------------------------------------------- */
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/** \name Utility helper functions
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* \{ */
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static PyObject *bvhtree_CreatePyObject(BVHTree *tree,
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float epsilon,
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float (*coords)[3],
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uint coords_len,
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uint (*tris)[3],
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uint tris_len,
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/* optional arrays */
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int *orig_index,
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float (*orig_normal)[3])
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{
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PyBVHTree *result = PyObject_New(PyBVHTree, &PyBVHTree_Type);
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result->tree = tree;
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result->epsilon = epsilon;
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result->coords = coords;
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result->tris = tris;
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result->coords_len = coords_len;
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result->tris_len = tris_len;
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result->orig_index = orig_index;
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result->orig_normal = orig_normal;
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return (PyObject *)result;
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name BVHTreeRayHit to Python utilities
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* \{ */
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static void py_bvhtree_raycast_to_py_tuple(const BVHTreeRayHit *hit, PyObject *py_retval)
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{
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BLI_assert(hit->index >= 0);
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BLI_assert(PyTuple_GET_SIZE(py_retval) == 4);
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PyTuple_SET_ITEMS(py_retval,
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Vector_CreatePyObject(hit->co, 3, NULL),
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Vector_CreatePyObject(hit->no, 3, NULL),
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PyLong_FromLong(hit->index),
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PyFloat_FromDouble(hit->dist));
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}
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static PyObject *py_bvhtree_raycast_to_py(const BVHTreeRayHit *hit)
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{
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PyObject *py_retval = PyTuple_New(4);
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py_bvhtree_raycast_to_py_tuple(hit, py_retval);
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return py_retval;
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}
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static PyObject *py_bvhtree_raycast_to_py_none(void)
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{
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PyObject *py_retval = PyTuple_New(4);
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PyC_Tuple_Fill(py_retval, Py_None);
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return py_retval;
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}
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#if 0
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static PyObject *py_bvhtree_raycast_to_py_and_check(const BVHTreeRayHit *hit)
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{
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PyObject *py_retval;
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py_retval = PyTuple_New(4);
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if (hit->index != -1) {
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py_bvhtree_raycast_to_py_tuple(hit, py_retval);
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}
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else {
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PyC_Tuple_Fill(py_retval, Py_None);
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}
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return py_retval;
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}
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#endif
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name BVHTreeNearest to Python utilities
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* \{ */
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static void py_bvhtree_nearest_to_py_tuple(const BVHTreeNearest *nearest, PyObject *py_retval)
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{
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BLI_assert(nearest->index >= 0);
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BLI_assert(PyTuple_GET_SIZE(py_retval) == 4);
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PyTuple_SET_ITEMS(py_retval,
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Vector_CreatePyObject(nearest->co, 3, NULL),
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Vector_CreatePyObject(nearest->no, 3, NULL),
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PyLong_FromLong(nearest->index),
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PyFloat_FromDouble(sqrtf(nearest->dist_sq)));
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}
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static PyObject *py_bvhtree_nearest_to_py(const BVHTreeNearest *nearest)
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{
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PyObject *py_retval = PyTuple_New(4);
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py_bvhtree_nearest_to_py_tuple(nearest, py_retval);
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return py_retval;
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}
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static PyObject *py_bvhtree_nearest_to_py_none(void)
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{
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PyObject *py_retval = PyTuple_New(4);
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PyC_Tuple_Fill(py_retval, Py_None);
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return py_retval;
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}
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#if 0
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static PyObject *py_bvhtree_nearest_to_py_and_check(const BVHTreeNearest *nearest)
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{
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PyObject *py_retval;
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py_retval = PyTuple_New(4);
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if (nearest->index != -1) {
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py_bvhtree_nearest_to_py_tuple(nearest, py_retval);
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}
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else {
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PyC_Tuple_Fill(py_retval, Py_None);
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}
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return py_retval;
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}
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#endif
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/** \} */
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static void py_bvhtree__tp_dealloc(PyBVHTree *self)
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{
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if (self->tree) {
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BLI_bvhtree_free(self->tree);
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}
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MEM_SAFE_FREE(self->coords);
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MEM_SAFE_FREE(self->tris);
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MEM_SAFE_FREE(self->orig_index);
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MEM_SAFE_FREE(self->orig_normal);
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Py_TYPE(self)->tp_free((PyObject *)self);
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}
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/* -------------------------------------------------------------------- */
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/** \name Methods
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* \{ */
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static void py_bvhtree_raycast_cb(void *userdata,
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int index,
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const BVHTreeRay *ray,
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BVHTreeRayHit *hit)
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{
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const PyBVHTree *self = userdata;
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const float(*coords)[3] = (const float(*)[3])self->coords;
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const uint *tri = self->tris[index];
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const float *tri_co[3] = {coords[tri[0]], coords[tri[1]], coords[tri[2]]};
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float dist;
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if (self->epsilon == 0.0f) {
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dist = bvhtree_ray_tri_intersection(ray, hit->dist, UNPACK3(tri_co));
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}
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else {
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dist = bvhtree_sphereray_tri_intersection(ray, self->epsilon, hit->dist, UNPACK3(tri_co));
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}
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if (dist >= 0 && dist < hit->dist) {
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hit->index = self->orig_index ? self->orig_index[index] : index;
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hit->dist = dist;
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madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist);
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if (self->orig_normal) {
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copy_v3_v3(hit->no, self->orig_normal[hit->index]);
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}
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else {
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normal_tri_v3(hit->no, UNPACK3(tri_co));
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}
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}
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}
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static void py_bvhtree_nearest_point_cb(void *userdata,
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int index,
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const float co[3],
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BVHTreeNearest *nearest)
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{
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PyBVHTree *self = userdata;
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const float(*coords)[3] = (const float(*)[3])self->coords;
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const uint *tri = self->tris[index];
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const float *tri_co[3] = {coords[tri[0]], coords[tri[1]], coords[tri[2]]};
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float nearest_tmp[3], dist_sq;
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closest_on_tri_to_point_v3(nearest_tmp, co, UNPACK3(tri_co));
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dist_sq = len_squared_v3v3(co, nearest_tmp);
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if (dist_sq < nearest->dist_sq) {
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nearest->index = self->orig_index ? self->orig_index[index] : index;
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nearest->dist_sq = dist_sq;
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copy_v3_v3(nearest->co, nearest_tmp);
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if (self->orig_normal) {
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copy_v3_v3(nearest->no, self->orig_normal[nearest->index]);
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}
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else {
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normal_tri_v3(nearest->no, UNPACK3(tri_co));
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}
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}
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}
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PyDoc_STRVAR(py_bvhtree_ray_cast_doc,
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".. method:: ray_cast(origin, direction, distance=sys.float_info.max)\n"
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"\n"
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" Cast a ray onto the mesh.\n"
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"\n"
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" :arg origin: Start location of the ray in object space.\n"
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" :type origin: :class:`Vector`\n"
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" :arg direction: Direction of the ray in object space.\n"
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" :type direction: :class:`Vector`\n" PYBVH_FIND_GENERIC_DISTANCE_DOC
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PYBVH_FIND_GENERIC_RETURN_DOC);
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static PyObject *py_bvhtree_ray_cast(PyBVHTree *self, PyObject *args)
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{
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const char *error_prefix = "ray_cast";
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float co[3], direction[3];
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float max_dist = FLT_MAX;
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BVHTreeRayHit hit;
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/* parse args */
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{
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PyObject *py_co, *py_direction;
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if (!PyArg_ParseTuple(args, "OO|f:ray_cast", &py_co, &py_direction, &max_dist)) {
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return NULL;
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}
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if ((mathutils_array_parse(co, 2, 3 | MU_ARRAY_ZERO, py_co, error_prefix) == -1) ||
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(mathutils_array_parse(direction, 2, 3 | MU_ARRAY_ZERO, py_direction, error_prefix) ==
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-1)) {
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return NULL;
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}
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normalize_v3(direction);
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}
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hit.dist = max_dist;
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hit.index = -1;
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/* may fail if the mesh has no faces, in that case the ray-cast misses */
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if (self->tree) {
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if (BLI_bvhtree_ray_cast(self->tree, co, direction, 0.0f, &hit, py_bvhtree_raycast_cb, self) !=
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-1) {
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return py_bvhtree_raycast_to_py(&hit);
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}
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}
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return py_bvhtree_raycast_to_py_none();
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}
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PyDoc_STRVAR(py_bvhtree_find_nearest_doc,
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".. method:: find_nearest(origin, distance=" PYBVH_MAX_DIST_STR
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")\n"
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"\n"
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" Find the nearest element (typically face index) to a point.\n"
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"\n"
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" :arg co: Find nearest element to this point.\n"
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" :type co: :class:`Vector`\n" PYBVH_FIND_GENERIC_DISTANCE_DOC
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PYBVH_FIND_GENERIC_RETURN_DOC);
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static PyObject *py_bvhtree_find_nearest(PyBVHTree *self, PyObject *args)
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{
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const char *error_prefix = "find_nearest";
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float co[3];
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float max_dist = max_dist_default;
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BVHTreeNearest nearest;
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/* parse args */
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{
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PyObject *py_co;
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if (!PyArg_ParseTuple(args, "O|f:find_nearest", &py_co, &max_dist)) {
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return NULL;
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}
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if (mathutils_array_parse(co, 2, 3 | MU_ARRAY_ZERO, py_co, error_prefix) == -1) {
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return NULL;
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}
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}
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nearest.index = -1;
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nearest.dist_sq = max_dist * max_dist;
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/* may fail if the mesh has no faces, in that case the ray-cast misses */
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if (self->tree) {
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if (BLI_bvhtree_find_nearest(self->tree, co, &nearest, py_bvhtree_nearest_point_cb, self) !=
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-1) {
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return py_bvhtree_nearest_to_py(&nearest);
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}
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}
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return py_bvhtree_nearest_to_py_none();
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}
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struct PyBVH_RangeData {
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PyBVHTree *self;
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PyObject *result;
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float dist_sq;
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};
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static void py_bvhtree_nearest_point_range_cb(void *userdata,
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int index,
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const float co[3],
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float UNUSED(dist_sq_bvh))
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{
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struct PyBVH_RangeData *data = userdata;
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PyBVHTree *self = data->self;
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const float(*coords)[3] = (const float(*)[3])self->coords;
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const uint *tri = self->tris[index];
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const float *tri_co[3] = {coords[tri[0]], coords[tri[1]], coords[tri[2]]};
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float nearest_tmp[3], dist_sq;
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closest_on_tri_to_point_v3(nearest_tmp, co, UNPACK3(tri_co));
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dist_sq = len_squared_v3v3(co, nearest_tmp);
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if (dist_sq < data->dist_sq) {
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BVHTreeNearest nearest;
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nearest.index = self->orig_index ? self->orig_index[index] : index;
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nearest.dist_sq = dist_sq;
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copy_v3_v3(nearest.co, nearest_tmp);
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if (self->orig_normal) {
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copy_v3_v3(nearest.no, self->orig_normal[nearest.index]);
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}
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else {
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normal_tri_v3(nearest.no, UNPACK3(tri_co));
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}
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PyList_APPEND(data->result, py_bvhtree_nearest_to_py(&nearest));
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}
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}
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PyDoc_STRVAR(
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py_bvhtree_find_nearest_range_doc,
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".. method:: find_nearest_range(origin, distance=" PYBVH_MAX_DIST_STR
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")\n"
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"\n"
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" Find the nearest elements (typically face index) to a point in the distance range.\n"
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|
"\n"
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" :arg co: Find nearest elements to this point.\n"
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" :type co: :class:`Vector`\n" PYBVH_FIND_GENERIC_DISTANCE_DOC
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PYBVH_FIND_GENERIC_RETURN_LIST_DOC);
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static PyObject *py_bvhtree_find_nearest_range(PyBVHTree *self, PyObject *args)
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{
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const char *error_prefix = "find_nearest_range";
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float co[3];
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float max_dist = max_dist_default;
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|
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/* parse args */
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{
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PyObject *py_co;
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if (!PyArg_ParseTuple(args, "O|f:find_nearest_range", &py_co, &max_dist)) {
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return NULL;
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}
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if (mathutils_array_parse(co, 2, 3 | MU_ARRAY_ZERO, py_co, error_prefix) == -1) {
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return NULL;
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}
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}
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|
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PyObject *ret = PyList_New(0);
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|
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if (self->tree) {
|
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struct PyBVH_RangeData data = {
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.self = self,
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.result = ret,
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.dist_sq = square_f(max_dist),
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};
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BLI_bvhtree_range_query(self->tree, co, max_dist, py_bvhtree_nearest_point_range_cb, &data);
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}
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|
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return ret;
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}
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|
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BLI_INLINE uint overlap_hash(const void *overlap_v)
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{
|
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const BVHTreeOverlap *overlap = overlap_v;
|
|
/* same constants as edge-hash */
|
|
return (((uint)overlap->indexA * 65) ^ ((uint)overlap->indexA * 31));
|
|
}
|
|
|
|
BLI_INLINE bool overlap_cmp(const void *a_v, const void *b_v)
|
|
{
|
|
const BVHTreeOverlap *a = a_v;
|
|
const BVHTreeOverlap *b = b_v;
|
|
return (memcmp(a, b, sizeof(*a)) != 0);
|
|
}
|
|
|
|
struct PyBVHTree_OverlapData {
|
|
PyBVHTree *tree_pair[2];
|
|
float epsilon;
|
|
};
|
|
|
|
static bool py_bvhtree_overlap_cb(void *userdata, int index_a, int index_b, int UNUSED(thread))
|
|
{
|
|
struct PyBVHTree_OverlapData *data = userdata;
|
|
PyBVHTree *tree_a = data->tree_pair[0];
|
|
PyBVHTree *tree_b = data->tree_pair[1];
|
|
const uint *tri_a = tree_a->tris[index_a];
|
|
const uint *tri_b = tree_b->tris[index_b];
|
|
const float *tri_a_co[3] = {
|
|
tree_a->coords[tri_a[0]], tree_a->coords[tri_a[1]], tree_a->coords[tri_a[2]]};
|
|
const float *tri_b_co[3] = {
|
|
tree_b->coords[tri_b[0]], tree_b->coords[tri_b[1]], tree_b->coords[tri_b[2]]};
|
|
float ix_pair[2][3];
|
|
int verts_shared = 0;
|
|
|
|
if (tree_a == tree_b) {
|
|
if (UNLIKELY(index_a == index_b)) {
|
|
return false;
|
|
}
|
|
|
|
verts_shared = (ELEM(tri_a_co[0], UNPACK3(tri_b_co)) + ELEM(tri_a_co[1], UNPACK3(tri_b_co)) +
|
|
ELEM(tri_a_co[2], UNPACK3(tri_b_co)));
|
|
|
|
/* if 2 points are shared, bail out */
|
|
if (verts_shared >= 2) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return (isect_tri_tri_v3(UNPACK3(tri_a_co), UNPACK3(tri_b_co), ix_pair[0], ix_pair[1]) &&
|
|
((verts_shared == 0) || (len_squared_v3v3(ix_pair[0], ix_pair[1]) > data->epsilon)));
|
|
}
|
|
|
|
PyDoc_STRVAR(
|
|
py_bvhtree_overlap_doc,
|
|
".. method:: overlap(other_tree)\n"
|
|
"\n"
|
|
" Find overlapping indices between 2 trees.\n"
|
|
"\n"
|
|
" :arg other_tree: Other tree to perform overlap test on.\n"
|
|
" :type other_tree: :class:`BVHTree`\n"
|
|
" :return: Returns a list of unique index pairs,"
|
|
" the first index referencing this tree, the second referencing the **other_tree**.\n"
|
|
" :rtype: :class:`list`\n");
|
|
static PyObject *py_bvhtree_overlap(PyBVHTree *self, PyBVHTree *other)
|
|
{
|
|
struct PyBVHTree_OverlapData data;
|
|
BVHTreeOverlap *overlap;
|
|
uint overlap_len = 0;
|
|
PyObject *ret;
|
|
|
|
if (!PyBVHTree_CheckExact(other)) {
|
|
PyErr_SetString(PyExc_ValueError, "Expected a BVHTree argument");
|
|
return NULL;
|
|
}
|
|
|
|
data.tree_pair[0] = self;
|
|
data.tree_pair[1] = other;
|
|
data.epsilon = max_ff(self->epsilon, other->epsilon);
|
|
|
|
overlap = BLI_bvhtree_overlap(
|
|
self->tree, other->tree, &overlap_len, py_bvhtree_overlap_cb, &data);
|
|
|
|
ret = PyList_New(0);
|
|
|
|
if (overlap == NULL) {
|
|
/* pass */
|
|
}
|
|
else {
|
|
const bool use_unique = (self->orig_index || other->orig_index);
|
|
GSet *pair_test = use_unique ?
|
|
BLI_gset_new_ex(overlap_hash, overlap_cmp, __func__, overlap_len) :
|
|
NULL;
|
|
/* simple case, no index remapping */
|
|
uint i;
|
|
|
|
for (i = 0; i < overlap_len; i++) {
|
|
PyObject *item;
|
|
if (use_unique) {
|
|
if (self->orig_index) {
|
|
overlap[i].indexA = self->orig_index[overlap[i].indexA];
|
|
}
|
|
if (other->orig_index) {
|
|
overlap[i].indexB = other->orig_index[overlap[i].indexB];
|
|
}
|
|
|
|
/* skip if its already added */
|
|
if (!BLI_gset_add(pair_test, &overlap[i])) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
item = PyTuple_New(2);
|
|
PyTuple_SET_ITEMS(
|
|
item, PyLong_FromLong(overlap[i].indexA), PyLong_FromLong(overlap[i].indexB));
|
|
|
|
PyList_Append(ret, item);
|
|
Py_DECREF(item);
|
|
}
|
|
|
|
if (pair_test) {
|
|
BLI_gset_free(pair_test, NULL);
|
|
}
|
|
}
|
|
|
|
if (overlap) {
|
|
MEM_freeN(overlap);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Class Methods
|
|
* \{ */
|
|
|
|
PyDoc_STRVAR(
|
|
C_BVHTree_FromPolygons_doc,
|
|
".. classmethod:: FromPolygons(vertices, polygons, all_triangles=False, epsilon=0.0)\n"
|
|
"\n"
|
|
" BVH tree constructed geometry passed in as arguments.\n"
|
|
"\n"
|
|
" :arg vertices: float triplets each representing ``(x, y, z)``\n"
|
|
" :type vertices: float triplet sequence\n"
|
|
" :arg polygons: Sequence of polyugons, each containing indices to the vertices argument.\n"
|
|
" :type polygons: Sequence of sequences containing ints\n"
|
|
" :arg all_triangles: Use when all **polygons** are triangles for more efficient "
|
|
"conversion.\n"
|
|
" :type all_triangles: bool\n" PYBVH_FROM_GENERIC_EPSILON_DOC);
|
|
static PyObject *C_BVHTree_FromPolygons(PyObject *UNUSED(cls), PyObject *args, PyObject *kwargs)
|
|
{
|
|
const char *error_prefix = "BVHTree.FromPolygons";
|
|
const char *keywords[] = {"vertices", "polygons", "all_triangles", "epsilon", NULL};
|
|
|
|
PyObject *py_coords, *py_tris;
|
|
PyObject *py_coords_fast = NULL, *py_tris_fast = NULL;
|
|
|
|
MemArena *poly_arena = NULL;
|
|
MemArena *pf_arena = NULL;
|
|
|
|
float(*coords)[3] = NULL;
|
|
uint(*tris)[3] = NULL;
|
|
uint coords_len, tris_len;
|
|
float epsilon = 0.0f;
|
|
bool all_triangles = false;
|
|
|
|
/* when all_triangles is False */
|
|
int *orig_index = NULL;
|
|
float(*orig_normal)[3] = NULL;
|
|
|
|
uint i;
|
|
bool valid = true;
|
|
|
|
if (!PyArg_ParseTupleAndKeywords(args,
|
|
kwargs,
|
|
"OO|$O&f:BVHTree.FromPolygons",
|
|
(char **)keywords,
|
|
&py_coords,
|
|
&py_tris,
|
|
PyC_ParseBool,
|
|
&all_triangles,
|
|
&epsilon)) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!(py_coords_fast = PySequence_Fast(py_coords, error_prefix)) ||
|
|
!(py_tris_fast = PySequence_Fast(py_tris, error_prefix))) {
|
|
Py_XDECREF(py_coords_fast);
|
|
return NULL;
|
|
}
|
|
|
|
if (valid) {
|
|
PyObject **py_coords_fast_items = PySequence_Fast_ITEMS(py_coords_fast);
|
|
coords_len = (uint)PySequence_Fast_GET_SIZE(py_coords_fast);
|
|
coords = MEM_mallocN((size_t)coords_len * sizeof(*coords), __func__);
|
|
|
|
for (i = 0; i < coords_len; i++) {
|
|
PyObject *py_vert = py_coords_fast_items[i];
|
|
|
|
if (mathutils_array_parse(coords[i], 3, 3, py_vert, "BVHTree vertex: ") == -1) {
|
|
valid = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (valid == false) {
|
|
/* pass */
|
|
}
|
|
else if (all_triangles) {
|
|
/* all triangles, simple case */
|
|
PyObject **py_tris_fast_items = PySequence_Fast_ITEMS(py_tris_fast);
|
|
tris_len = (uint)PySequence_Fast_GET_SIZE(py_tris_fast);
|
|
tris = MEM_mallocN((size_t)tris_len * sizeof(*tris), __func__);
|
|
|
|
for (i = 0; i < tris_len; i++) {
|
|
PyObject *py_tricoords = py_tris_fast_items[i];
|
|
PyObject *py_tricoords_fast;
|
|
PyObject **py_tricoords_fast_items;
|
|
uint *tri = tris[i];
|
|
int j;
|
|
|
|
if (!(py_tricoords_fast = PySequence_Fast(py_tricoords, error_prefix))) {
|
|
valid = false;
|
|
break;
|
|
}
|
|
|
|
if (PySequence_Fast_GET_SIZE(py_tricoords_fast) != 3) {
|
|
Py_DECREF(py_tricoords_fast);
|
|
PyErr_Format(PyExc_ValueError,
|
|
"%s: non triangle found at index %d with length of %d",
|
|
error_prefix,
|
|
i,
|
|
PySequence_Fast_GET_SIZE(py_tricoords_fast));
|
|
valid = false;
|
|
break;
|
|
}
|
|
|
|
py_tricoords_fast_items = PySequence_Fast_ITEMS(py_tricoords_fast);
|
|
|
|
for (j = 0; j < 3; j++) {
|
|
tri[j] = PyC_Long_AsU32(py_tricoords_fast_items[j]);
|
|
if (UNLIKELY(tri[j] >= (uint)coords_len)) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"%s: index %d must be less than %d",
|
|
error_prefix,
|
|
tri[j],
|
|
coords_len);
|
|
|
|
/* decref below */
|
|
valid = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
Py_DECREF(py_tricoords_fast);
|
|
}
|
|
}
|
|
else {
|
|
/* ngon support (much more involved) */
|
|
const uint polys_len = (uint)PySequence_Fast_GET_SIZE(py_tris_fast);
|
|
struct PolyLink {
|
|
struct PolyLink *next;
|
|
uint len;
|
|
uint poly[0];
|
|
} *plink_first = NULL, **p_plink_prev = &plink_first, *plink = NULL;
|
|
int poly_index;
|
|
|
|
tris_len = 0;
|
|
|
|
poly_arena = BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE, __func__);
|
|
|
|
for (i = 0; i < polys_len; i++) {
|
|
PyObject *py_tricoords = PySequence_Fast_GET_ITEM(py_tris_fast, i);
|
|
PyObject *py_tricoords_fast;
|
|
PyObject **py_tricoords_fast_items;
|
|
uint py_tricoords_len;
|
|
uint j;
|
|
|
|
if (!(py_tricoords_fast = PySequence_Fast(py_tricoords, error_prefix))) {
|
|
valid = false;
|
|
break;
|
|
}
|
|
|
|
py_tricoords_len = (uint)PySequence_Fast_GET_SIZE(py_tricoords_fast);
|
|
py_tricoords_fast_items = PySequence_Fast_ITEMS(py_tricoords_fast);
|
|
|
|
plink = BLI_memarena_alloc(poly_arena,
|
|
sizeof(*plink) + (sizeof(int) * (size_t)py_tricoords_len));
|
|
|
|
plink->len = (uint)py_tricoords_len;
|
|
*p_plink_prev = plink;
|
|
p_plink_prev = &plink->next;
|
|
|
|
for (j = 0; j < py_tricoords_len; j++) {
|
|
plink->poly[j] = PyC_Long_AsU32(py_tricoords_fast_items[j]);
|
|
if (UNLIKELY(plink->poly[j] >= (uint)coords_len)) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"%s: index %d must be less than %d",
|
|
error_prefix,
|
|
plink->poly[j],
|
|
coords_len);
|
|
/* decref below */
|
|
valid = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
Py_DECREF(py_tricoords_fast);
|
|
|
|
if (py_tricoords_len >= 3) {
|
|
tris_len += (py_tricoords_len - 2);
|
|
}
|
|
}
|
|
*p_plink_prev = NULL;
|
|
|
|
/* all ngon's are parsed, now tessellate */
|
|
|
|
pf_arena = BLI_memarena_new(BLI_POLYFILL_ARENA_SIZE, __func__);
|
|
tris = MEM_mallocN(sizeof(*tris) * (size_t)tris_len, __func__);
|
|
|
|
orig_index = MEM_mallocN(sizeof(*orig_index) * (size_t)tris_len, __func__);
|
|
orig_normal = MEM_mallocN(sizeof(*orig_normal) * (size_t)polys_len, __func__);
|
|
|
|
for (plink = plink_first, poly_index = 0, i = 0; plink; plink = plink->next, poly_index++) {
|
|
if (plink->len == 3) {
|
|
uint *tri = tris[i];
|
|
memcpy(tri, plink->poly, sizeof(uint[3]));
|
|
orig_index[i] = poly_index;
|
|
normal_tri_v3(orig_normal[poly_index], coords[tri[0]], coords[tri[1]], coords[tri[2]]);
|
|
i++;
|
|
}
|
|
else if (plink->len > 3) {
|
|
float(*proj_coords)[2] = BLI_memarena_alloc(pf_arena, sizeof(*proj_coords) * plink->len);
|
|
float *normal = orig_normal[poly_index];
|
|
const float *co_prev;
|
|
const float *co_curr;
|
|
float axis_mat[3][3];
|
|
uint(*tris_offset)[3] = &tris[i];
|
|
uint j;
|
|
|
|
/* calc normal and setup 'proj_coords' */
|
|
zero_v3(normal);
|
|
co_prev = coords[plink->poly[plink->len - 1]];
|
|
for (j = 0; j < plink->len; j++) {
|
|
co_curr = coords[plink->poly[j]];
|
|
add_newell_cross_v3_v3v3(normal, co_prev, co_curr);
|
|
co_prev = co_curr;
|
|
}
|
|
normalize_v3(normal);
|
|
|
|
axis_dominant_v3_to_m3_negate(axis_mat, normal);
|
|
|
|
for (j = 0; j < plink->len; j++) {
|
|
mul_v2_m3v3(proj_coords[j], axis_mat, coords[plink->poly[j]]);
|
|
}
|
|
|
|
BLI_polyfill_calc_arena(proj_coords, plink->len, 1, tris_offset, pf_arena);
|
|
|
|
j = plink->len - 2;
|
|
while (j--) {
|
|
uint *tri = tris_offset[j];
|
|
/* remap to global indices */
|
|
tri[0] = plink->poly[tri[0]];
|
|
tri[1] = plink->poly[tri[1]];
|
|
tri[2] = plink->poly[tri[2]];
|
|
|
|
orig_index[i] = poly_index;
|
|
i++;
|
|
}
|
|
|
|
BLI_memarena_clear(pf_arena);
|
|
}
|
|
else {
|
|
zero_v3(orig_normal[poly_index]);
|
|
}
|
|
}
|
|
}
|
|
|
|
Py_DECREF(py_coords_fast);
|
|
Py_DECREF(py_tris_fast);
|
|
|
|
if (pf_arena) {
|
|
BLI_memarena_free(pf_arena);
|
|
}
|
|
|
|
if (poly_arena) {
|
|
BLI_memarena_free(poly_arena);
|
|
}
|
|
|
|
if (valid) {
|
|
BVHTree *tree;
|
|
|
|
tree = BLI_bvhtree_new((int)tris_len, epsilon, PY_BVH_TREE_TYPE_DEFAULT, PY_BVH_AXIS_DEFAULT);
|
|
if (tree) {
|
|
for (i = 0; i < tris_len; i++) {
|
|
float co[3][3];
|
|
|
|
copy_v3_v3(co[0], coords[tris[i][0]]);
|
|
copy_v3_v3(co[1], coords[tris[i][1]]);
|
|
copy_v3_v3(co[2], coords[tris[i][2]]);
|
|
|
|
BLI_bvhtree_insert(tree, (int)i, co[0], 3);
|
|
}
|
|
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
|
|
return bvhtree_CreatePyObject(
|
|
tree, epsilon, coords, coords_len, tris, tris_len, orig_index, orig_normal);
|
|
}
|
|
|
|
if (coords) {
|
|
MEM_freeN(coords);
|
|
}
|
|
if (tris) {
|
|
MEM_freeN(tris);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#ifndef MATH_STANDALONE
|
|
|
|
PyDoc_STRVAR(C_BVHTree_FromBMesh_doc,
|
|
".. classmethod:: FromBMesh(bmesh, epsilon=0.0)\n"
|
|
"\n"
|
|
" BVH tree based on :class:`BMesh` data.\n"
|
|
"\n"
|
|
" :arg bmesh: BMesh data.\n"
|
|
" :type bmesh: :class:`BMesh`\n" PYBVH_FROM_GENERIC_EPSILON_DOC);
|
|
static PyObject *C_BVHTree_FromBMesh(PyObject *UNUSED(cls), PyObject *args, PyObject *kwargs)
|
|
{
|
|
const char *keywords[] = {"bmesh", "epsilon", NULL};
|
|
|
|
BPy_BMesh *py_bm;
|
|
|
|
float(*coords)[3] = NULL;
|
|
uint(*tris)[3] = NULL;
|
|
uint coords_len, tris_len;
|
|
float epsilon = 0.0f;
|
|
|
|
BMesh *bm;
|
|
BMLoop *(*looptris)[3];
|
|
|
|
if (!PyArg_ParseTupleAndKeywords(args,
|
|
kwargs,
|
|
"O!|$f:BVHTree.FromBMesh",
|
|
(char **)keywords,
|
|
&BPy_BMesh_Type,
|
|
&py_bm,
|
|
&epsilon)) {
|
|
return NULL;
|
|
}
|
|
|
|
bm = py_bm->bm;
|
|
|
|
/* Get data for tessellation */
|
|
{
|
|
int tris_len_dummy;
|
|
|
|
coords_len = (uint)bm->totvert;
|
|
tris_len = (uint)poly_to_tri_count(bm->totface, bm->totloop);
|
|
|
|
coords = MEM_mallocN(sizeof(*coords) * (size_t)coords_len, __func__);
|
|
tris = MEM_mallocN(sizeof(*tris) * (size_t)tris_len, __func__);
|
|
|
|
looptris = MEM_mallocN(sizeof(*looptris) * (size_t)tris_len, __func__);
|
|
|
|
BM_mesh_calc_tessellation(bm, looptris, &tris_len_dummy);
|
|
BLI_assert(tris_len_dummy == (int)tris_len);
|
|
}
|
|
|
|
{
|
|
BMIter iter;
|
|
BVHTree *tree;
|
|
uint i;
|
|
|
|
int *orig_index = NULL;
|
|
float(*orig_normal)[3] = NULL;
|
|
|
|
tree = BLI_bvhtree_new((int)tris_len, epsilon, PY_BVH_TREE_TYPE_DEFAULT, PY_BVH_AXIS_DEFAULT);
|
|
if (tree) {
|
|
BMFace *f;
|
|
BMVert *v;
|
|
|
|
orig_index = MEM_mallocN(sizeof(*orig_index) * (size_t)tris_len, __func__);
|
|
orig_normal = MEM_mallocN(sizeof(*orig_normal) * (size_t)bm->totface, __func__);
|
|
|
|
BM_ITER_MESH_INDEX (v, &iter, bm, BM_VERTS_OF_MESH, i) {
|
|
copy_v3_v3(coords[i], v->co);
|
|
BM_elem_index_set(v, (int)i); /* set_inline */
|
|
}
|
|
BM_ITER_MESH_INDEX (f, &iter, bm, BM_FACES_OF_MESH, i) {
|
|
copy_v3_v3(orig_normal[i], f->no);
|
|
BM_elem_index_set(f, (int)i); /* set_inline */
|
|
}
|
|
bm->elem_index_dirty &= (char)~(BM_VERT | BM_FACE);
|
|
|
|
for (i = 0; i < tris_len; i++) {
|
|
float co[3][3];
|
|
|
|
tris[i][0] = (uint)BM_elem_index_get(looptris[i][0]->v);
|
|
tris[i][1] = (uint)BM_elem_index_get(looptris[i][1]->v);
|
|
tris[i][2] = (uint)BM_elem_index_get(looptris[i][2]->v);
|
|
|
|
copy_v3_v3(co[0], coords[tris[i][0]]);
|
|
copy_v3_v3(co[1], coords[tris[i][1]]);
|
|
copy_v3_v3(co[2], coords[tris[i][2]]);
|
|
|
|
BLI_bvhtree_insert(tree, (int)i, co[0], 3);
|
|
orig_index[i] = BM_elem_index_get(looptris[i][0]->f);
|
|
}
|
|
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
|
|
MEM_freeN(looptris);
|
|
|
|
return bvhtree_CreatePyObject(
|
|
tree, epsilon, coords, coords_len, tris, tris_len, orig_index, orig_normal);
|
|
}
|
|
}
|
|
|
|
/* return various derived meshes based on requested settings */
|
|
static Mesh *bvh_get_mesh(const char *funcname,
|
|
struct Depsgraph *depsgraph,
|
|
struct Scene *scene,
|
|
Object *ob,
|
|
const bool use_deform,
|
|
const bool use_cage,
|
|
bool *r_free_mesh)
|
|
{
|
|
Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
|
|
/* we only need minimum mesh data for topology and vertex locations */
|
|
const CustomData_MeshMasks data_masks = CD_MASK_BAREMESH;
|
|
const bool use_render = DEG_get_mode(depsgraph) == DAG_EVAL_RENDER;
|
|
*r_free_mesh = false;
|
|
|
|
/* Write the display mesh into the dummy mesh */
|
|
if (use_deform) {
|
|
if (use_render) {
|
|
if (use_cage) {
|
|
PyErr_Format(
|
|
PyExc_ValueError,
|
|
"%s(...): cage arg is unsupported when dependency graph evaluation mode is RENDER",
|
|
funcname);
|
|
return NULL;
|
|
}
|
|
|
|
*r_free_mesh = true;
|
|
return mesh_create_eval_final(depsgraph, scene, ob, &data_masks);
|
|
}
|
|
if (ob_eval != NULL) {
|
|
if (use_cage) {
|
|
return mesh_get_eval_deform(depsgraph, scene, ob_eval, &data_masks);
|
|
}
|
|
|
|
return mesh_get_eval_final(depsgraph, scene, ob_eval, &data_masks);
|
|
}
|
|
|
|
PyErr_Format(PyExc_ValueError,
|
|
"%s(...): Cannot get evaluated data from given dependency graph / object pair",
|
|
funcname);
|
|
return NULL;
|
|
}
|
|
|
|
/* !use_deform */
|
|
if (use_render) {
|
|
if (use_cage) {
|
|
PyErr_Format(
|
|
PyExc_ValueError,
|
|
"%s(...): cage arg is unsupported when dependency graph evaluation mode is RENDER",
|
|
funcname);
|
|
return NULL;
|
|
}
|
|
|
|
*r_free_mesh = true;
|
|
return mesh_create_eval_no_deform_render(depsgraph, scene, ob, &data_masks);
|
|
}
|
|
|
|
if (use_cage) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"%s(...): cage arg is unsupported when deform=False and dependency graph "
|
|
"evaluation mode is not RENDER",
|
|
funcname);
|
|
return NULL;
|
|
}
|
|
|
|
*r_free_mesh = true;
|
|
return mesh_create_eval_no_deform(depsgraph, scene, ob, &data_masks);
|
|
}
|
|
|
|
PyDoc_STRVAR(C_BVHTree_FromObject_doc,
|
|
".. classmethod:: FromObject(object, depsgraph, deform=True, render=False, "
|
|
"cage=False, epsilon=0.0)\n"
|
|
"\n"
|
|
" BVH tree based on :class:`Object` data.\n"
|
|
"\n"
|
|
" :arg object: Object data.\n"
|
|
" :type object: :class:`Object`\n"
|
|
" :arg depsgraph: Depsgraph to use for evaluating the mesh.\n"
|
|
" :type depsgraph: :class:`Depsgraph`\n"
|
|
" :arg deform: Use mesh with deformations.\n"
|
|
" :type deform: bool\n"
|
|
" :arg cage: Use modifiers cage.\n"
|
|
" :type cage: bool\n" PYBVH_FROM_GENERIC_EPSILON_DOC);
|
|
static PyObject *C_BVHTree_FromObject(PyObject *UNUSED(cls), PyObject *args, PyObject *kwargs)
|
|
{
|
|
/* note, options here match 'bpy_bmesh_from_object' */
|
|
const char *keywords[] = {"object", "depsgraph", "deform", "cage", "epsilon", NULL};
|
|
|
|
PyObject *py_ob, *py_depsgraph;
|
|
Object *ob;
|
|
struct Depsgraph *depsgraph;
|
|
struct Scene *scene;
|
|
Mesh *mesh;
|
|
bool use_deform = true;
|
|
bool use_cage = false;
|
|
bool free_mesh = false;
|
|
|
|
const MLoopTri *lt;
|
|
const MLoop *mloop;
|
|
|
|
float(*coords)[3] = NULL;
|
|
uint(*tris)[3] = NULL;
|
|
uint coords_len, tris_len;
|
|
float epsilon = 0.0f;
|
|
|
|
if (!PyArg_ParseTupleAndKeywords(args,
|
|
kwargs,
|
|
"OO|$O&O&f:BVHTree.FromObject",
|
|
(char **)keywords,
|
|
&py_ob,
|
|
&py_depsgraph,
|
|
PyC_ParseBool,
|
|
&use_deform,
|
|
PyC_ParseBool,
|
|
&use_cage,
|
|
&epsilon) ||
|
|
((ob = PyC_RNA_AsPointer(py_ob, "Object")) == NULL) ||
|
|
((depsgraph = PyC_RNA_AsPointer(py_depsgraph, "Depsgraph")) == NULL)) {
|
|
return NULL;
|
|
}
|
|
|
|
scene = DEG_get_evaluated_scene(depsgraph);
|
|
mesh = bvh_get_mesh("BVHTree", depsgraph, scene, ob, use_deform, use_cage, &free_mesh);
|
|
|
|
if (mesh == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Get data for tessellation */
|
|
{
|
|
lt = BKE_mesh_runtime_looptri_ensure(mesh);
|
|
|
|
tris_len = (uint)BKE_mesh_runtime_looptri_len(mesh);
|
|
coords_len = (uint)mesh->totvert;
|
|
|
|
coords = MEM_mallocN(sizeof(*coords) * (size_t)coords_len, __func__);
|
|
tris = MEM_mallocN(sizeof(*tris) * (size_t)tris_len, __func__);
|
|
|
|
MVert *mv = mesh->mvert;
|
|
for (int i = 0; i < mesh->totvert; i++, mv++) {
|
|
copy_v3_v3(coords[i], mv->co);
|
|
}
|
|
|
|
mloop = mesh->mloop;
|
|
}
|
|
|
|
{
|
|
BVHTree *tree;
|
|
uint i;
|
|
|
|
int *orig_index = NULL;
|
|
float(*orig_normal)[3] = NULL;
|
|
|
|
tree = BLI_bvhtree_new((int)tris_len, epsilon, PY_BVH_TREE_TYPE_DEFAULT, PY_BVH_AXIS_DEFAULT);
|
|
if (tree) {
|
|
orig_index = MEM_mallocN(sizeof(*orig_index) * (size_t)tris_len, __func__);
|
|
CustomData *pdata = &mesh->pdata;
|
|
orig_normal = CustomData_get_layer(pdata, CD_NORMAL); /* can be NULL */
|
|
if (orig_normal) {
|
|
orig_normal = MEM_dupallocN(orig_normal);
|
|
}
|
|
|
|
for (i = 0; i < tris_len; i++, lt++) {
|
|
float co[3][3];
|
|
|
|
tris[i][0] = mloop[lt->tri[0]].v;
|
|
tris[i][1] = mloop[lt->tri[1]].v;
|
|
tris[i][2] = mloop[lt->tri[2]].v;
|
|
|
|
copy_v3_v3(co[0], coords[tris[i][0]]);
|
|
copy_v3_v3(co[1], coords[tris[i][1]]);
|
|
copy_v3_v3(co[2], coords[tris[i][2]]);
|
|
|
|
BLI_bvhtree_insert(tree, (int)i, co[0], 3);
|
|
orig_index[i] = (int)lt->poly;
|
|
}
|
|
|
|
BLI_bvhtree_balance(tree);
|
|
}
|
|
|
|
if (free_mesh) {
|
|
BKE_id_free(NULL, mesh);
|
|
}
|
|
|
|
return bvhtree_CreatePyObject(
|
|
tree, epsilon, coords, coords_len, tris, tris_len, orig_index, orig_normal);
|
|
}
|
|
}
|
|
#endif /* MATH_STANDALONE */
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Module & Type definition
|
|
* \{ */
|
|
|
|
static PyMethodDef py_bvhtree_methods[] = {
|
|
{"ray_cast", (PyCFunction)py_bvhtree_ray_cast, METH_VARARGS, py_bvhtree_ray_cast_doc},
|
|
{"find_nearest",
|
|
(PyCFunction)py_bvhtree_find_nearest,
|
|
METH_VARARGS,
|
|
py_bvhtree_find_nearest_doc},
|
|
{"find_nearest_range",
|
|
(PyCFunction)py_bvhtree_find_nearest_range,
|
|
METH_VARARGS,
|
|
py_bvhtree_find_nearest_range_doc},
|
|
{"overlap", (PyCFunction)py_bvhtree_overlap, METH_O, py_bvhtree_overlap_doc},
|
|
|
|
/* class methods */
|
|
{"FromPolygons",
|
|
(PyCFunction)C_BVHTree_FromPolygons,
|
|
METH_VARARGS | METH_KEYWORDS | METH_CLASS,
|
|
C_BVHTree_FromPolygons_doc},
|
|
#ifndef MATH_STANDALONE
|
|
{"FromBMesh",
|
|
(PyCFunction)C_BVHTree_FromBMesh,
|
|
METH_VARARGS | METH_KEYWORDS | METH_CLASS,
|
|
C_BVHTree_FromBMesh_doc},
|
|
{"FromObject",
|
|
(PyCFunction)C_BVHTree_FromObject,
|
|
METH_VARARGS | METH_KEYWORDS | METH_CLASS,
|
|
C_BVHTree_FromObject_doc},
|
|
#endif
|
|
{NULL, NULL, 0, NULL},
|
|
};
|
|
|
|
PyTypeObject PyBVHTree_Type = {
|
|
PyVarObject_HEAD_INIT(NULL, 0) "BVHTree", /* tp_name */
|
|
sizeof(PyBVHTree), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)py_bvhtree__tp_dealloc, /* tp_dealloc */
|
|
(printfunc)NULL, /* tp_print */
|
|
NULL, /* tp_getattr */
|
|
NULL, /* tp_setattr */
|
|
NULL, /* tp_compare */
|
|
NULL, /* tp_repr */
|
|
NULL, /* tp_as_number */
|
|
NULL, /* tp_as_sequence */
|
|
NULL, /* tp_as_mapping */
|
|
NULL, /* tp_hash */
|
|
NULL, /* tp_call */
|
|
NULL, /* tp_str */
|
|
NULL, /* tp_getattro */
|
|
NULL, /* tp_setattro */
|
|
NULL, /* tp_as_buffer */
|
|
Py_TPFLAGS_DEFAULT, /* tp_flags */
|
|
NULL, /* Documentation string */
|
|
NULL, /* tp_traverse */
|
|
NULL, /* tp_clear */
|
|
NULL, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
NULL, /* tp_iter */
|
|
NULL, /* tp_iternext */
|
|
py_bvhtree_methods, /* tp_methods */
|
|
NULL, /* tp_members */
|
|
NULL, /* tp_getset */
|
|
NULL, /* tp_base */
|
|
NULL, /* tp_dict */
|
|
NULL, /* tp_descr_get */
|
|
NULL, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
NULL, /* tp_init */
|
|
(allocfunc)PyType_GenericAlloc, /* tp_alloc */
|
|
(newfunc)PyType_GenericNew, /* tp_new */
|
|
(freefunc)0, /* tp_free */
|
|
NULL, /* tp_is_gc */
|
|
NULL, /* tp_bases */
|
|
NULL, /* tp_mro */
|
|
NULL, /* tp_cache */
|
|
NULL, /* tp_subclasses */
|
|
NULL, /* tp_weaklist */
|
|
(destructor)NULL, /* tp_del */
|
|
};
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/* Module definition */
|
|
|
|
PyDoc_STRVAR(py_bvhtree_doc,
|
|
"BVH tree structures for proximity searches and ray casts on geometry.");
|
|
static struct PyModuleDef bvhtree_moduledef = {
|
|
PyModuleDef_HEAD_INIT,
|
|
"mathutils.bvhtree", /* m_name */
|
|
py_bvhtree_doc, /* m_doc */
|
|
0, /* m_size */
|
|
NULL, /* m_methods */
|
|
NULL, /* m_reload */
|
|
NULL, /* m_traverse */
|
|
NULL, /* m_clear */
|
|
NULL, /* m_free */
|
|
};
|
|
|
|
PyMODINIT_FUNC PyInit_mathutils_bvhtree(void)
|
|
{
|
|
PyObject *m = PyModule_Create(&bvhtree_moduledef);
|
|
|
|
if (m == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Register classes */
|
|
if (PyType_Ready(&PyBVHTree_Type) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
PyModule_AddType(m, &PyBVHTree_Type);
|
|
|
|
return m;
|
|
}
|
|
|
|
/** \} */
|