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/model/pigment.h | 86 ++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 libdimension/dimension/model/pigment.h (limited to 'libdimension/dimension/model/pigment.h') diff --git a/libdimension/dimension/model/pigment.h b/libdimension/dimension/model/pigment.h new file mode 100644 index 0000000..14d8bae --- /dev/null +++ b/libdimension/dimension/model/pigment.h @@ -0,0 +1,86 @@ +/************************************************************************* + * 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 + * Object pigments. + */ + +/* Forward-declare dmnsn_pigment */ +typedef struct dmnsn_pigment dmnsn_pigment; + +/** + * Pigment callback. + * @param[in] pigment The pigment itself. + * @param[in] v The point to color. + * @return The color of the pigment at \p v. + */ +typedef dmnsn_tcolor dmnsn_pigment_fn(const dmnsn_pigment *pigment, + dmnsn_vector v); + +/** + * Pigment initializer callback. + * @param[in,out] pigment The pigment to initialize. + */ +typedef void dmnsn_pigment_initialize_fn(dmnsn_pigment *pigment); + +/** A pigment. */ +struct dmnsn_pigment { + dmnsn_pigment_fn *pigment_fn; /**< The pigment callback. */ + dmnsn_pigment_initialize_fn *initialize_fn; /**< The initializer callback. */ + + dmnsn_matrix trans; /**< Transformation matrix. */ + dmnsn_matrix trans_inv; /**< The inverse of the transformation matrix. */ + + /** Quick color -- used for low-quality renders. */ + dmnsn_tcolor quick_color; + + bool initialized; /** @internal Whether the pigment is initialized. */ +}; + +/** + * Allocate a new dummy pigment. + * @param[in] pool The memory pool to allocate from. + * @return The allocated pigment. + */ +dmnsn_pigment *dmnsn_new_pigment(dmnsn_pool *pool); + +/** + * Initialize a dmnsn_pigment field. + * @param[out] pigment The pigment to initialize. + */ +void dmnsn_init_pigment(dmnsn_pigment *pigment); + +/** + * Initialize a pigment. Pigments should not be used before being initialized, + * but should not be modified after being initialized. Pigments are generally + * initialized for you. + * @param[in,out] pigment The pigment to initialize. + */ +void dmnsn_pigment_initialize(dmnsn_pigment *pigment); + +/** + * Evaluate the color of a pigment at a point. + * @param[in] pigment The pigment to evaluate. + * @param[in] v The point to color. + * @return The color at \p v. + */ +dmnsn_tcolor dmnsn_pigment_evaluate(const dmnsn_pigment *pigment, + dmnsn_vector v); -- cgit v1.2.3