e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup pymathutils
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*/
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#include <Python.h>
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#include "mathutils.h"
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#include "mathutils_interpolate.h"
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#include "BLI_math_geom.h"
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#include "BLI_utildefines.h"
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#ifndef MATH_STANDALONE /* define when building outside blender */
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# include "MEM_guardedalloc.h"
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#endif
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/*-------------------------DOC STRINGS ---------------------------*/
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PyDoc_STRVAR(M_Interpolate_doc, "The Blender interpolate module");
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/* ---------------------------------WEIGHT CALCULATION ----------------------- */
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#ifndef MATH_STANDALONE
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PyDoc_STRVAR(M_Interpolate_poly_3d_calc_doc,
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".. function:: poly_3d_calc(veclist, pt)\n"
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"\n"
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" Calculate barycentric weights for a point on a polygon.\n"
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"\n"
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" :arg veclist: list of vectors\n"
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" :arg pt: point"
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" :rtype: list of per-vector weights\n");
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static PyObject *M_Interpolate_poly_3d_calc(PyObject * /*self*/, PyObject *args)
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{
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float fp[3];
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float(*vecs)[3];
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Py_ssize_t len;
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PyObject *point, *veclist, *ret;
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int i;
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if (!PyArg_ParseTuple(args, "OO:poly_3d_calc", &veclist, &point)) {
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return nullptr;
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}
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if (mathutils_array_parse(
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fp, 2, 3 | MU_ARRAY_ZERO, point, "pt must be a 2-3 dimensional vector") == -1)
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{
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return nullptr;
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}
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len = mathutils_array_parse_alloc_v(((float **)&vecs), 3, veclist, __func__);
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if (len == -1) {
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return nullptr;
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}
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if (len) {
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float *weights = static_cast<float *>(MEM_mallocN(sizeof(float) * len, __func__));
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interp_weights_poly_v3(weights, vecs, len, fp);
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ret = PyList_New(len);
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for (i = 0; i < len; i++) {
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PyList_SET_ITEM(ret, i, PyFloat_FromDouble(weights[i]));
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}
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MEM_freeN(weights);
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PyMem_Free(vecs);
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}
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else {
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ret = PyList_New(0);
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}
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return ret;
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}
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#endif /* MATH_STANDALONE */
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static PyMethodDef M_Interpolate_methods[] = {
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#ifndef MATH_STANDALONE
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{"poly_3d_calc",
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(PyCFunction)M_Interpolate_poly_3d_calc,
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METH_VARARGS,
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M_Interpolate_poly_3d_calc_doc},
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#endif
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{nullptr, nullptr, 0, nullptr},
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};
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static PyModuleDef M_Interpolate_module_def = {
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/*m_base*/ PyModuleDef_HEAD_INIT,
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/*m_name*/ "mathutils.interpolate",
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/*m_doc*/ M_Interpolate_doc,
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/*m_size*/ 0,
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/*m_methods*/ M_Interpolate_methods,
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/*m_slots*/ nullptr,
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/*m_traverse*/ nullptr,
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/*m_clear*/ nullptr,
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/*m_free*/ nullptr,
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};
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/*----------------------------MODULE INIT-------------------------*/
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PyMODINIT_FUNC PyInit_mathutils_interpolate()
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{
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PyObject *submodule = PyModule_Create(&M_Interpolate_module_def);
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return submodule;
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}
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