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Diffstat (limited to 'libgimpmath/gimpvector.h')
| -rw-r--r-- | libgimpmath/gimpvector.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/libgimpmath/gimpvector.h b/libgimpmath/gimpvector.h new file mode 100644 index 0000000..77230da --- /dev/null +++ b/libgimpmath/gimpvector.h @@ -0,0 +1,160 @@ +/* LIBGIMP - The GIMP Library + * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball + * + * gimpvector.h + * + * The gimp_vector* functions were taken from: + * GCK - The General Convenience Kit + * Copyright (C) 1996 Tom Bech + * + * This 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. + * + * This 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 library. If not, see + * <https://www.gnu.org/licenses/>. + */ + +#if !defined (__GIMP_MATH_H_INSIDE__) && !defined (GIMP_MATH_COMPILATION) +#error "Only <libgimpmath/gimpmath.h> can be included directly." +#endif + +#ifndef __GIMP_VECTOR_H__ +#define __GIMP_VECTOR_H__ + +G_BEGIN_DECLS + +/* For information look into the C source or the html documentation */ + + +/* Two dimensional vector functions */ +/* ================================ */ + +GimpVector2 gimp_vector2_new (gdouble x, + gdouble y); +void gimp_vector2_set (GimpVector2 *vector, + gdouble x, + gdouble y); +gdouble gimp_vector2_length (const GimpVector2 *vector); +gdouble gimp_vector2_length_val (GimpVector2 vector); +void gimp_vector2_mul (GimpVector2 *vector, + gdouble factor); +GimpVector2 gimp_vector2_mul_val (GimpVector2 vector, + gdouble factor); +void gimp_vector2_normalize (GimpVector2 *vector); +GimpVector2 gimp_vector2_normalize_val (GimpVector2 vector); +void gimp_vector2_neg (GimpVector2 *vector); +GimpVector2 gimp_vector2_neg_val (GimpVector2 vector); +void gimp_vector2_add (GimpVector2 *result, + const GimpVector2 *vector1, + const GimpVector2 *vector2); +GimpVector2 gimp_vector2_add_val (GimpVector2 vector1, + GimpVector2 vector2); +void gimp_vector2_sub (GimpVector2 *result, + const GimpVector2 *vector1, + const GimpVector2 *vector2); +GimpVector2 gimp_vector2_sub_val (GimpVector2 vector1, + GimpVector2 vector2); +gdouble gimp_vector2_inner_product (const GimpVector2 *vector1, + const GimpVector2 *vector2); +gdouble gimp_vector2_inner_product_val (GimpVector2 vector1, + GimpVector2 vector2); +GimpVector2 gimp_vector2_cross_product (const GimpVector2 *vector1, + const GimpVector2 *vector2); +GimpVector2 gimp_vector2_cross_product_val (GimpVector2 vector1, + GimpVector2 vector2); +void gimp_vector2_rotate (GimpVector2 *vector, + gdouble alpha); +GimpVector2 gimp_vector2_rotate_val (GimpVector2 vector, + gdouble alpha); +GimpVector2 gimp_vector2_normal (GimpVector2 *vector); +GimpVector2 gimp_vector2_normal_val (GimpVector2 vector); + +/* Three dimensional vector functions */ +/* ================================== */ + +GimpVector3 gimp_vector3_new (gdouble x, + gdouble y, + gdouble z); +void gimp_vector3_set (GimpVector3 *vector, + gdouble x, + gdouble y, + gdouble z); +gdouble gimp_vector3_length (const GimpVector3 *vector); +gdouble gimp_vector3_length_val (GimpVector3 vector); +void gimp_vector3_mul (GimpVector3 *vector, + gdouble factor); +GimpVector3 gimp_vector3_mul_val (GimpVector3 vector, + gdouble factor); +void gimp_vector3_normalize (GimpVector3 *vector); +GimpVector3 gimp_vector3_normalize_val (GimpVector3 vector); +void gimp_vector3_neg (GimpVector3 *vector); +GimpVector3 gimp_vector3_neg_val (GimpVector3 vector); +void gimp_vector3_add (GimpVector3 *result, + const GimpVector3 *vector1, + const GimpVector3 *vector2); +GimpVector3 gimp_vector3_add_val (GimpVector3 vector1, + GimpVector3 vector2); +void gimp_vector3_sub (GimpVector3 *result, + const GimpVector3 *vector1, + const GimpVector3 *vector2); +GimpVector3 gimp_vector3_sub_val (GimpVector3 vector1, + GimpVector3 vector2); +gdouble gimp_vector3_inner_product (const GimpVector3 *vector1, + const GimpVector3 *vector2); +gdouble gimp_vector3_inner_product_val (GimpVector3 vector1, + GimpVector3 vector2); +GimpVector3 gimp_vector3_cross_product (const GimpVector3 *vector1, + const GimpVector3 *vector2); +GimpVector3 gimp_vector3_cross_product_val (GimpVector3 vector1, + GimpVector3 vector2); +void gimp_vector3_rotate (GimpVector3 *vector, + gdouble alpha, + gdouble beta, + gdouble gamma); +GimpVector3 gimp_vector3_rotate_val (GimpVector3 vector, + gdouble alpha, + gdouble beta, + gdouble gamma); + +/* 2d <-> 3d Vector projection functions */ +/* ===================================== */ + +void gimp_vector_2d_to_3d (gint sx, + gint sy, + gint w, + gint h, + gint x, + gint y, + const GimpVector3 *vp, + GimpVector3 *p); + +GimpVector3 gimp_vector_2d_to_3d_val (gint sx, + gint sy, + gint w, + gint h, + gint x, + gint y, + GimpVector3 vp, + GimpVector3 p); + +void gimp_vector_3d_to_2d (gint sx, + gint sy, + gint w, + gint h, + gdouble *x, + gdouble *y, + const GimpVector3 *vp, + const GimpVector3 *p); + + +G_END_DECLS + +#endif /* __GIMP_VECTOR_H__ */ |