diff options
Diffstat (limited to 'libdimension/dimension/pattern')
| -rw-r--r-- | libdimension/dimension/pattern/map.h | 68 | ||||
| -rw-r--r-- | libdimension/dimension/pattern/pattern.h | 62 | ||||
| -rw-r--r-- | libdimension/dimension/pattern/patterns.h | 48 |
3 files changed, 178 insertions, 0 deletions
diff --git a/libdimension/dimension/pattern/map.h b/libdimension/dimension/pattern/map.h new file mode 100644 index 0000000..7229a24 --- /dev/null +++ b/libdimension/dimension/pattern/map.h @@ -0,0 +1,68 @@ +/************************************************************************* + * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com> * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * <http://www.gnu.org/licenses/>. * + *************************************************************************/ + +/** + * @file + * Generic maps (backend for pigment_maps, etc.). + */ + +/** A map. */ +typedef struct dmnsn_map dmnsn_map; + +/** + * Create an empty map. + * @param[in] pool The memory pool to allocate from. + * @param[in] size The size of the objects to store in the map. + * @return A map with no entries. + */ +dmnsn_map *dmnsn_new_map(dmnsn_pool *pool, size_t size); + +/** + * Add an entry (a scalar-object pair) to a map. + * @param[in,out] map The map to add to. + * @param[in] n The index of the entry. + * @param[in] obj The value of the entry. + */ +void dmnsn_map_add_entry(dmnsn_map *map, double n, const void *obj); + +/** + * Return the number of entries in a map. + * @param[in] map The map to measure. + * @return The size of \p map. + */ +size_t dmnsn_map_size(const dmnsn_map *map); + +/** + * Evaluate a map. + * @param[in] map The map to evaluate. + * @param[in] n The index to evaluate. + * @param[out] val The normalized distance of \p n from \p obj1. + * @param[out] obj1 The first object. + * @param[out] obj2 The second object. + */ +void dmnsn_map_evaluate(const dmnsn_map *map, double n, + double *val, void *obj1, void *obj2); + +/** + * Apply a callback to each element of a map. + * @param[in,out] map The map. + * @param[in] callback The callback to apply to the elements. + */ +void dmnsn_map_apply(dmnsn_map *map, dmnsn_callback_fn *callback); diff --git a/libdimension/dimension/pattern/pattern.h b/libdimension/dimension/pattern/pattern.h new file mode 100644 index 0000000..2caed07 --- /dev/null +++ b/libdimension/dimension/pattern/pattern.h @@ -0,0 +1,62 @@ +/************************************************************************* + * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com> * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * <http://www.gnu.org/licenses/>. * + *************************************************************************/ + +/** + * @file + * Patterns. Patterns are functions which map vectors to scalars, which are + * used for pigments and normals. + */ + +/* Forward-declare dmnsn_pattern */ +typedef struct dmnsn_pattern dmnsn_pattern; + +/** + * Pattern callback. + * @param[in] pattern The pattern itself. + * @param[in] v The point at which to evaluate the pattern. + * @return The value of the pattern at \p v. + */ +typedef double dmnsn_pattern_fn(const dmnsn_pattern *pattern, dmnsn_vector v); + +/** A pattern. */ +struct dmnsn_pattern { + dmnsn_pattern_fn *pattern_fn; /**< The pattern callback. */ +}; + +/** + * Allocate a dummy pattern. + * @param[in] pool The memory pool to allocate from. + * @return A pattern with no callbacks set. + */ +dmnsn_pattern *dmnsn_new_pattern(dmnsn_pool *pool); + +/** + * Initialize a dmnsn_pattern field. + * @param[out] pattern The pattern to initialize. + */ +void dmnsn_init_pattern(dmnsn_pattern *pattern); + +/** + * Invoke the pattern callback. + * @param[in] pattern The pattern to evaluate. + * @param[in] v The point to get the pattern value for. + * @return The value of the pattern at \p v. + */ +double dmnsn_pattern_value(const dmnsn_pattern *pattern, dmnsn_vector v); diff --git a/libdimension/dimension/pattern/patterns.h b/libdimension/dimension/pattern/patterns.h new file mode 100644 index 0000000..59b7fec --- /dev/null +++ b/libdimension/dimension/pattern/patterns.h @@ -0,0 +1,48 @@ +/************************************************************************* + * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com> * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * <http://www.gnu.org/licenses/>. * + *************************************************************************/ + +/** + * @file + * Pre-defined patterns. + */ + +/** + * A checker pattern. The pattern is composed of tesselating unit cubes + * alternating between 0 and 1. + * @param[in] pool The memory pool to allocate from. + * @return A checker pattern. + */ +dmnsn_pattern *dmnsn_new_checker_pattern(dmnsn_pool *pool); + +/** + * A gradient. The value starts at 0 at the origin, and goes linearly to 1 in + * the direction of \p orientation, then repeats after a distance of 1. + * @param[in] pool The memory pool to allocate from. + * @param[in] orientation The direction of the gradient. + * @return A gradient pattern. + */ +dmnsn_pattern *dmnsn_new_gradient_pattern(dmnsn_pool *pool, dmnsn_vector orientation); + +/** + * A leopard pattern. + * @param[in] pool The memory pool to allocate from. + * @return A leopard pattern. + */ +dmnsn_pattern *dmnsn_new_leopard_pattern(dmnsn_pool *pool); |