161 lines
8.7 KiB
C
161 lines
8.7 KiB
C
/* LIBPIKA - The PIKA Library
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* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
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*
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* pikavector.h
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*
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* The pika_vector* functions were taken from:
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* GCK - The General Convenience Kit
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* Copyright (C) 1996 Tom Bech
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*
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* This library is free software: you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <https://www.gnu.org/licenses/>.
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*/
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#if !defined (__PIKA_MATH_H_INSIDE__) && !defined (PIKA_MATH_COMPILATION)
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#error "Only <libpikamath/pikamath.h> can be included directly."
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#endif
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#ifndef __PIKA_VECTOR_H__
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#define __PIKA_VECTOR_H__
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G_BEGIN_DECLS
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/* For information look into the C source or the html documentation */
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/* Two dimensional vector functions */
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/* ================================ */
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PikaVector2 pika_vector2_new (gdouble x,
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gdouble y);
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void pika_vector2_set (PikaVector2 *vector,
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gdouble x,
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gdouble y);
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gdouble pika_vector2_length (const PikaVector2 *vector);
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gdouble pika_vector2_length_val (PikaVector2 vector);
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void pika_vector2_mul (PikaVector2 *vector,
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gdouble factor);
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PikaVector2 pika_vector2_mul_val (PikaVector2 vector,
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gdouble factor);
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void pika_vector2_normalize (PikaVector2 *vector);
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PikaVector2 pika_vector2_normalize_val (PikaVector2 vector);
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void pika_vector2_neg (PikaVector2 *vector);
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PikaVector2 pika_vector2_neg_val (PikaVector2 vector);
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void pika_vector2_add (PikaVector2 *result,
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const PikaVector2 *vector1,
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const PikaVector2 *vector2);
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PikaVector2 pika_vector2_add_val (PikaVector2 vector1,
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PikaVector2 vector2);
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void pika_vector2_sub (PikaVector2 *result,
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const PikaVector2 *vector1,
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const PikaVector2 *vector2);
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PikaVector2 pika_vector2_sub_val (PikaVector2 vector1,
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PikaVector2 vector2);
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gdouble pika_vector2_inner_product (const PikaVector2 *vector1,
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const PikaVector2 *vector2);
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gdouble pika_vector2_inner_product_val (PikaVector2 vector1,
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PikaVector2 vector2);
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PikaVector2 pika_vector2_cross_product (const PikaVector2 *vector1,
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const PikaVector2 *vector2);
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PikaVector2 pika_vector2_cross_product_val (PikaVector2 vector1,
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PikaVector2 vector2);
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void pika_vector2_rotate (PikaVector2 *vector,
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gdouble alpha);
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PikaVector2 pika_vector2_rotate_val (PikaVector2 vector,
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gdouble alpha);
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PikaVector2 pika_vector2_normal (PikaVector2 *vector);
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PikaVector2 pika_vector2_normal_val (PikaVector2 vector);
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/* Three dimensional vector functions */
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/* ================================== */
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PikaVector3 pika_vector3_new (gdouble x,
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gdouble y,
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gdouble z);
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void pika_vector3_set (PikaVector3 *vector,
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gdouble x,
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gdouble y,
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gdouble z);
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gdouble pika_vector3_length (const PikaVector3 *vector);
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gdouble pika_vector3_length_val (PikaVector3 vector);
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void pika_vector3_mul (PikaVector3 *vector,
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gdouble factor);
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PikaVector3 pika_vector3_mul_val (PikaVector3 vector,
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gdouble factor);
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void pika_vector3_normalize (PikaVector3 *vector);
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PikaVector3 pika_vector3_normalize_val (PikaVector3 vector);
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void pika_vector3_neg (PikaVector3 *vector);
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PikaVector3 pika_vector3_neg_val (PikaVector3 vector);
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void pika_vector3_add (PikaVector3 *result,
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const PikaVector3 *vector1,
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const PikaVector3 *vector2);
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PikaVector3 pika_vector3_add_val (PikaVector3 vector1,
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PikaVector3 vector2);
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void pika_vector3_sub (PikaVector3 *result,
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const PikaVector3 *vector1,
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const PikaVector3 *vector2);
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PikaVector3 pika_vector3_sub_val (PikaVector3 vector1,
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PikaVector3 vector2);
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gdouble pika_vector3_inner_product (const PikaVector3 *vector1,
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const PikaVector3 *vector2);
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gdouble pika_vector3_inner_product_val (PikaVector3 vector1,
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PikaVector3 vector2);
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PikaVector3 pika_vector3_cross_product (const PikaVector3 *vector1,
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const PikaVector3 *vector2);
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PikaVector3 pika_vector3_cross_product_val (PikaVector3 vector1,
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PikaVector3 vector2);
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void pika_vector3_rotate (PikaVector3 *vector,
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gdouble alpha,
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gdouble beta,
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gdouble gamma);
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PikaVector3 pika_vector3_rotate_val (PikaVector3 vector,
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gdouble alpha,
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gdouble beta,
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gdouble gamma);
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/* 2d <-> 3d Vector projection functions */
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/* ===================================== */
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void pika_vector_2d_to_3d (gint sx,
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gint sy,
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gint w,
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gint h,
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gint x,
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gint y,
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const PikaVector3 *vp,
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PikaVector3 *p);
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PikaVector3 pika_vector_2d_to_3d_val (gint sx,
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gint sy,
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gint w,
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gint h,
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gint x,
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gint y,
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PikaVector3 vp,
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PikaVector3 p);
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void pika_vector_3d_to_2d (gint sx,
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gint sy,
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gint w,
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gint h,
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gdouble *x,
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gdouble *y,
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const PikaVector3 *vp,
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const PikaVector3 *p);
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G_END_DECLS
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#endif /* __PIKA_VECTOR_H__ */
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