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Click on a line that starts with a "+" to see the C code that Cython generated for it.
Raw output: simplify_wrapper.cpp
+001: # distutils: language = c++
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002:
003: from libcpp.vector cimport vector
004: from libcpp cimport bool
005:
006: import cython
007: from cython.parallel cimport prange
008:
+009: import numpy as np
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010: cimport numpy as np
+011: from numpy import int32,float64, signedinteger, unsignedinteger
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012:
+013: from time import time
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014:
+015: import trimesh as tr
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016:
017: cdef extern from "Simplify.h" namespace "Simplify" :
018: void simplify_mesh( int target_count, int update_rate, double aggressiveness,
019: bool verbose, int max_iterations,double alpha, int K,
020: bool lossless, double threshold_lossless, bool preserve_border)
021: void setMeshFromExt(vector[vector[double]] vertices, vector[vector[int]] faces)
022: vector[vector[int]] getFaces()
023: vector[vector[double]] getVertices()
024: vector[vector[double]] getNormals()
025:
026:
+027: cdef class pySimplify :
struct __pyx_obj_16simplify_wrapper_pySimplify {
PyObject_HEAD
struct __pyx_vtabstruct_16simplify_wrapper_pySimplify *__pyx_vtab;
__Pyx_memviewslice faces_mv;
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std::vector<std::vector<double> > vertices_cpp;
std::vector<std::vector<double> > normals_cpp;
};
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struct __pyx_vtabstruct_16simplify_wrapper_pySimplify {
void (*setMesh)(struct __pyx_obj_16simplify_wrapper_pySimplify *, PyObject *, int __pyx_skip_dispatch);
void (*simplify_mesh)(struct __pyx_obj_16simplify_wrapper_pySimplify *, int __pyx_skip_dispatch, struct __pyx_opt_args_16simplify_wrapper_10pySimplify_simplify_mesh *__pyx_optional_args);
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028:
029: cdef int[:,:] faces_mv
030: cdef double[:,:] vertices_mv
031: cdef double[:,:] normals_mv
032:
033: cdef vector[vector[int]] triangles_cpp
034: cdef vector[vector[double]] vertices_cpp
035: cdef vector[vector[double]] normals_cpp
036:
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/* Python wrapper */
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038: pass
039:
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062: cdef vector[int] triangle
063: cdef vector[double] vertex
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int K;
bool preserve_border;
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086: """Simplify mesh
087:
088: Parameters
089: ----------
090: target_count : int
091: Target number of triangles, not used if lossless is True
092: update_rate : int
093: Number of iterations between each update.
094: If lossless flag is set to True, rate is 1
095: aggressiveness : float
096: Parameter controlling the growth rate of the threshold at each
097: iteration when lossless is False.
098: max_iterations : int
099: Maximal number of iterations
100: verbose : bool
101: control verbosity
102: lossless : bool
103: Use the lossless simplification method
104: threshold_lossless : float
105: Maximal error after which a vertex is not deleted, only for
106: lossless method.
107: alpha : float
108: Parameter for controlling the threshold growth
109: K : int
110: Parameter for controlling the thresold growth
111: preserve_border : Bool
112: Flag for preserving vertices on open border
113:
114: Note
115: ----
116: threshold = alpha*pow( iteration + K, agressiveness)
117: """
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+120: simplify_mesh(target_count, update_rate, aggressiveness, verbose, max_iterations, alpha, K,
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121: lossless, threshold_lossless, preserve_border)
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+123: print('simplified mesh in {} seconds '.format(round(t_end-t_start,4), N_start, target_count))
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124:
125:
+126: cdef vector[vector[double]] setVerticesNogil(double[:,:] vertices, vector[vector[double]] vector_vertices )nogil:
static std::vector<std::vector<double> > __pyx_f_16simplify_wrapper_setVerticesNogil(__Pyx_memviewslice __pyx_v_vertices, std::vector<std::vector<double> > __pyx_v_vector_vertices) {
std::vector<double> __pyx_v_vertex;
Py_ssize_t __pyx_v_i;
long __pyx_v_j;
std::vector<std::vector<double> > __pyx_r;
/* … */
/* function exit code */
__pyx_L1_error:;
__Pyx_WriteUnraisable("simplify_wrapper.setVerticesNogil", __pyx_clineno, __pyx_lineno, __pyx_filename, 1, 1);
__Pyx_pretend_to_initialize(&__pyx_r);
__pyx_L0:;
return __pyx_r;
}
127: cdef vector[double] vertex
+128: for i in range(vertices.shape[0]):
__pyx_t_1 = (__pyx_v_vertices.shape[0]);
__pyx_t_2 = __pyx_t_1;
for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
__pyx_v_i = __pyx_t_3;
+129: vertex.clear()
__pyx_v_vertex.clear();
+130: for j in range(3):
for (__pyx_t_4 = 0; __pyx_t_4 < 3; __pyx_t_4+=1) {
__pyx_v_j = __pyx_t_4;
+131: vertex.push_back(vertices[i,j])
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__pyx_t_6 = __pyx_v_j;
__pyx_t_7 = -1;
if (__pyx_t_5 < 0) {
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PyGILState_STATE __pyx_gilstate_save = __Pyx_PyGILState_Ensure();
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try {
__pyx_v_vector_vertices.push_back(__pyx_v_vertex);
} catch(...) {
#ifdef WITH_THREAD
PyGILState_STATE __pyx_gilstate_save = __Pyx_PyGILState_Ensure();
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__Pyx_CppExn2PyErr();
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__Pyx_PyGILState_Release(__pyx_gilstate_save);
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+133: return vector_vertices
__pyx_r = __pyx_v_vector_vertices; goto __pyx_L0;
134:
+135: cdef vector[vector[int]] setFacesNogil(int[:,:] faces, vector[vector[int]] vector_faces )nogil:
static std::vector<std::vector<int> > __pyx_f_16simplify_wrapper_setFacesNogil(__Pyx_memviewslice __pyx_v_faces, std::vector<std::vector<int> > __pyx_v_vector_faces) {
std::vector<int> __pyx_v_triangle;
Py_ssize_t __pyx_v_i;
long __pyx_v_j;
std::vector<std::vector<int> > __pyx_r;
/* … */
/* function exit code */
__pyx_L1_error:;
__Pyx_WriteUnraisable("simplify_wrapper.setFacesNogil", __pyx_clineno, __pyx_lineno, __pyx_filename, 1, 1);
__Pyx_pretend_to_initialize(&__pyx_r);
__pyx_L0:;
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136: cdef vector[int] triangle
+137: for i in range(faces.shape[0]):
__pyx_t_1 = (__pyx_v_faces.shape[0]);
__pyx_t_2 = __pyx_t_1;
for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
__pyx_v_i = __pyx_t_3;
+138: triangle.clear()
__pyx_v_triangle.clear();
+139: for j in range(3):
for (__pyx_t_4 = 0; __pyx_t_4 < 3; __pyx_t_4+=1) {
__pyx_v_j = __pyx_t_4;
+140: triangle.push_back(faces[i,j])
__pyx_t_5 = __pyx_v_i;
__pyx_t_6 = __pyx_v_j;
__pyx_t_7 = -1;
if (__pyx_t_5 < 0) {
__pyx_t_5 += __pyx_v_faces.shape[0];
if (unlikely(__pyx_t_5 < 0)) __pyx_t_7 = 0;
} else if (unlikely(__pyx_t_5 >= __pyx_v_faces.shape[0])) __pyx_t_7 = 0;
if (__pyx_t_6 < 0) {
__pyx_t_6 += __pyx_v_faces.shape[1];
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__Pyx_RaiseBufferIndexErrorNogil(__pyx_t_7);
__PYX_ERR(0, 140, __pyx_L1_error)
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__pyx_v_triangle.push_back((*((int *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_faces.data + __pyx_t_5 * __pyx_v_faces.strides[0]) ) + __pyx_t_6 * __pyx_v_faces.strides[1]) ))));
} catch(...) {
#ifdef WITH_THREAD
PyGILState_STATE __pyx_gilstate_save = __Pyx_PyGILState_Ensure();
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__Pyx_CppExn2PyErr();
#ifdef WITH_THREAD
__Pyx_PyGILState_Release(__pyx_gilstate_save);
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__PYX_ERR(0, 140, __pyx_L1_error)
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+141: vector_faces.push_back(triangle)
try {
__pyx_v_vector_faces.push_back(__pyx_v_triangle);
} catch(...) {
#ifdef WITH_THREAD
PyGILState_STATE __pyx_gilstate_save = __Pyx_PyGILState_Ensure();
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__Pyx_CppExn2PyErr();
#ifdef WITH_THREAD
__Pyx_PyGILState_Release(__pyx_gilstate_save);
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__PYX_ERR(0, 141, __pyx_L1_error)
}
}
+142: return vector_faces
__pyx_r = __pyx_v_vector_faces; goto __pyx_L0;
143:
144:
145:
146: '''
147: from pySimplify import pySimplify
148: import trimesh as tr
149: mesh = tr.load_mesh('Stanford_Bunny_sample.stl')
150:
151: simplify = pySimplify()
152: simplify.setMesh(mesh)
153: simplify.simplify_mesh(100, preserve_border=True)
154: mesh_simple = simplify.getMesh()
155:
156: '''
157: