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Diffstat (limited to 'extern/curve_fit_nd/curve_fit_nd.h')
| -rw-r--r-- | extern/curve_fit_nd/curve_fit_nd.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/extern/curve_fit_nd/curve_fit_nd.h b/extern/curve_fit_nd/curve_fit_nd.h new file mode 100644 index 00000000000..67b0ed75b8e --- /dev/null +++ b/extern/curve_fit_nd/curve_fit_nd.h @@ -0,0 +1,125 @@ +/* + * Copyright (c) 2016, DWANGO Co., Ltd. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the <organization> nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __SPLINE_FIT__ +#define __SPLINE_FIT__ + +/** \file curve_fit_nd.h + * \ingroup curve_fit + */ + + +/* curve_fit_cubic.c */ + +/** + * Takes a flat array of points and evalues that to calculate a bezier spline. + * + * \param points, points_len: The array of points to calculate a cubics from. + * \param dims: The number of dimensions for for each element in \a points. + * \param error_threshold: the error threshold to allow for, + * the curve will be within this distance from \a points. + * \param corners, corners_len: indices for points which will not have aligned tangents (optional). + * This can use the output of #curve_fit_corners_detect_db which has been included + * to evaluate a line to detect corner indices. + * + * \param r_cubic_array, r_cubic_array_len: Resulting array of tangents and knots, formatted as follows: + * ``r_cubic_array[r_cubic_array_len][3][dims]``, + * where each point has 0 and 2 for the tangents and the middle index 1 for the knot. + * The size of the *flat* array will be ``r_cubic_array_len * 3 * dims``. + * \param r_corner_index_array, r_corner_index_len: Corner indices in in \a r_cubic_array (optional). + * This allows you to access corners on the resulting curve. + * + * \returns zero on success, nonzero is reserved for error values. + */ +int curve_fit_cubic_from_points_db( + const double *points, + const unsigned int points_len, + const unsigned int dims, + const double error_threshold, + const unsigned int *corners, + unsigned int corners_len, + + double **r_cubic_array, unsigned int *r_cubic_array_len, + unsigned int **r_cubic_orig_index, + unsigned int **r_corner_index_array, unsigned int *r_corner_index_len); + +int curve_fit_cubic_from_points_fl( + const float *points, + const unsigned int points_len, + const unsigned int dims, + const float error_threshold, + const unsigned int *corners, + const unsigned int corners_len, + + float **r_cubic_array, unsigned int *r_cubic_array_len, + unsigned int **r_cubic_orig_index, + unsigned int **r_corners_index_array, unsigned int *r_corners_index_len); + + +/* curve_fit_corners_detect.c */ + +/** + * A helper function that takes a line and outputs its corner indices. + * + * \param points, points_len: Curve to evaluate. + * \param dims: The number of dimensions for for each element in \a points. + * \param radius_min: Corners on the curve between points below this radius are ignored. + * \param radius_max: Corners on the curve above this radius are ignored. + * \param samples_max: Prevent testing corners beyond this many points + * (prevents a large radius taking excessive time to compute). + * \param angle_threshold: Angles above this value are considered corners + * (higher value for fewer corners). + * + * \param r_corners, r_corners_len: Resulting array of corners. + * + * \returns zero on success, nonzero is reserved for error values. + */ +int curve_fit_corners_detect_db( + const double *points, + const unsigned int points_len, + const unsigned int dims, + const double radius_min, + const double radius_max, + const unsigned int samples_max, + const double angle_threshold, + + unsigned int **r_corners, + unsigned int *r_corners_len); + +int curve_fit_corners_detect_fl( + const float *points, + const unsigned int points_len, + const unsigned int dims, + const float radius_min, + const float radius_max, + const unsigned int samples_max, + const float angle_threshold, + + unsigned int **r_corners, + unsigned int *r_corners_len); + +#endif /* __SPLINE_FIT__ */ |