From 7b09710392d35fb55b52031d447a542d99fc6b4b Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Tue, 19 Aug 2014 17:10:03 -0400 Subject: Modularize the libdimension codebase. --- libdimension/dimension/pattern/pattern.h | 62 ++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 libdimension/dimension/pattern/pattern.h (limited to 'libdimension/dimension/pattern/pattern.h') 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 * + * * + * 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 * + * . * + *************************************************************************/ + +/** + * @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); -- cgit v1.2.3