# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Cython wrapper for ``helpers.f90``."""


from libcpp cimport bool as bool_t


cdef extern from "bezier/helpers.h":
    void cross_product(double* vec0, double* vec1, double* result)
    void bbox(int* num_nodes, double* nodes, double* left, double* right,
        double* bottom, double* top)
    void wiggle_interval(double* value, double* result, bool_t* success)
    void contains_nd(int* num_nodes, int* dimension, double* nodes, double* point,
        bool_t* predicate)
    bool_t vector_close(int* num_values, double* vec1, double* vec2, double* eps)
    bool_t in_interval(double* value, double* start, double* end)
    void simple_convex_hull(
        int* num_points, double* points, int* polygon_size, double* polygon)
    void polygon_collide(int* polygon_size1, double* polygon1, int* polygon_size2,
        double* polygon2, bool_t* collision)
