X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=libraries%2Flibart_lgpl-2.3.7%2Fart_rect.c;fp=libraries%2Flibart_lgpl-2.3.7%2Fart_rect.c;h=0000000000000000000000000000000000000000;hp=25276b2d259da8b6b93bc7b3e1520bfba1e8bd06;hb=5d405fd05bbfbbd94a7c6cbd876e6634025c1c25;hpb=bab0189ee9d56aca8bea909275317ab4e0be09ee diff --git a/libraries/libart_lgpl-2.3.7/art_rect.c b/libraries/libart_lgpl-2.3.7/art_rect.c deleted file mode 100644 index 25276b2..0000000 --- a/libraries/libart_lgpl-2.3.7/art_rect.c +++ /dev/null @@ -1,214 +0,0 @@ -/* Libart_LGPL - library of basic graphic primitives - * Copyright (C) 1998 Raph Levien - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#include -#include "art_misc.h" -#include "art_rect.h" - -#ifndef MAX -#define MAX(a, b) (((a) > (b)) ? (a) : (b)) -#endif /* MAX */ - -#ifndef MIN -#define MIN(a, b) (((a) < (b)) ? (a) : (b)) -#endif /* MIN */ - -/* rectangle primitives stolen from gzilla */ - -/** - * art_irect_copy: Make a copy of an integer rectangle. - * @dest: Where the copy is stored. - * @src: The source rectangle. - * - * Copies the rectangle. - **/ -void -art_irect_copy (ArtIRect *dest, const ArtIRect *src) { - dest->x0 = src->x0; - dest->y0 = src->y0; - dest->x1 = src->x1; - dest->y1 = src->y1; -} - -/** - * art_irect_union: Find union of two integer rectangles. - * @dest: Where the result is stored. - * @src1: A source rectangle. - * @src2: Another source rectangle. - * - * Finds the smallest rectangle that includes @src1 and @src2. - **/ -void -art_irect_union (ArtIRect *dest, const ArtIRect *src1, const ArtIRect *src2) { - if (art_irect_empty (src1)) { - art_irect_copy (dest, src2); - } else if (art_irect_empty (src2)) { - art_irect_copy (dest, src1); - } else { - dest->x0 = MIN (src1->x0, src2->x0); - dest->y0 = MIN (src1->y0, src2->y0); - dest->x1 = MAX (src1->x1, src2->x1); - dest->y1 = MAX (src1->y1, src2->y1); - } -} - -/** - * art_irect_intersection: Find intersection of two integer rectangles. - * @dest: Where the result is stored. - * @src1: A source rectangle. - * @src2: Another source rectangle. - * - * Finds the intersection of @src1 and @src2. - **/ -void -art_irect_intersect (ArtIRect *dest, const ArtIRect *src1, const ArtIRect *src2) { - dest->x0 = MAX (src1->x0, src2->x0); - dest->y0 = MAX (src1->y0, src2->y0); - dest->x1 = MIN (src1->x1, src2->x1); - dest->y1 = MIN (src1->y1, src2->y1); -} - -/** - * art_irect_empty: Determine whether integer rectangle is empty. - * @src: The source rectangle. - * - * Return value: TRUE if @src is an empty rectangle, FALSE otherwise. - **/ -int -art_irect_empty (const ArtIRect *src) { - return (src->x1 <= src->x0 || src->y1 <= src->y0); -} - -#if 0 -gboolean irect_point_inside (ArtIRect *rect, GzwPoint *point) { - return (point->x >= rect->x0 && point->y >= rect->y0 && - point->x < rect->x1 && point->y < rect->y1); -} -#endif - -/** - * art_drect_copy: Make a copy of a rectangle. - * @dest: Where the copy is stored. - * @src: The source rectangle. - * - * Copies the rectangle. - **/ -void -art_drect_copy (ArtDRect *dest, const ArtDRect *src) { - dest->x0 = src->x0; - dest->y0 = src->y0; - dest->x1 = src->x1; - dest->y1 = src->y1; -} - -/** - * art_drect_union: Find union of two rectangles. - * @dest: Where the result is stored. - * @src1: A source rectangle. - * @src2: Another source rectangle. - * - * Finds the smallest rectangle that includes @src1 and @src2. - **/ -void -art_drect_union (ArtDRect *dest, const ArtDRect *src1, const ArtDRect *src2) { - if (art_drect_empty (src1)) { - art_drect_copy (dest, src2); - } else if (art_drect_empty (src2)) { - art_drect_copy (dest, src1); - } else { - dest->x0 = MIN (src1->x0, src2->x0); - dest->y0 = MIN (src1->y0, src2->y0); - dest->x1 = MAX (src1->x1, src2->x1); - dest->y1 = MAX (src1->y1, src2->y1); - } -} - -/** - * art_drect_intersection: Find intersection of two rectangles. - * @dest: Where the result is stored. - * @src1: A source rectangle. - * @src2: Another source rectangle. - * - * Finds the intersection of @src1 and @src2. - **/ -void -art_drect_intersect (ArtDRect *dest, const ArtDRect *src1, const ArtDRect *src2) { - dest->x0 = MAX (src1->x0, src2->x0); - dest->y0 = MAX (src1->y0, src2->y0); - dest->x1 = MIN (src1->x1, src2->x1); - dest->y1 = MIN (src1->y1, src2->y1); -} - -/** - * art_irect_empty: Determine whether rectangle is empty. - * @src: The source rectangle. - * - * Return value: TRUE if @src is an empty rectangle, FALSE otherwise. - **/ -int -art_drect_empty (const ArtDRect *src) { - return (src->x1 <= src->x0 || src->y1 <= src->y0); -} - -/** - * art_drect_affine_transform: Affine transform rectangle. - * @dst: Where to store the result. - * @src: The source rectangle. - * @matrix: The affine transformation. - * - * Find the smallest rectangle enclosing the affine transformed @src. - * The result is exactly the affine transformation of @src when - * @matrix specifies a rectilinear affine transformation, otherwise it - * is a conservative approximation. - **/ -void -art_drect_affine_transform (ArtDRect *dst, const ArtDRect *src, const double matrix[6]) -{ - double x00, y00, x10, y10; - double x01, y01, x11, y11; - - x00 = src->x0 * matrix[0] + src->y0 * matrix[2] + matrix[4]; - y00 = src->x0 * matrix[1] + src->y0 * matrix[3] + matrix[5]; - x10 = src->x1 * matrix[0] + src->y0 * matrix[2] + matrix[4]; - y10 = src->x1 * matrix[1] + src->y0 * matrix[3] + matrix[5]; - x01 = src->x0 * matrix[0] + src->y1 * matrix[2] + matrix[4]; - y01 = src->x0 * matrix[1] + src->y1 * matrix[3] + matrix[5]; - x11 = src->x1 * matrix[0] + src->y1 * matrix[2] + matrix[4]; - y11 = src->x1 * matrix[1] + src->y1 * matrix[3] + matrix[5]; - dst->x0 = MIN (MIN (x00, x10), MIN (x01, x11)); - dst->y0 = MIN (MIN (y00, y10), MIN (y01, y11)); - dst->x1 = MAX (MAX (x00, x10), MAX (x01, x11)); - dst->y1 = MAX (MAX (y00, y10), MAX (y01, y11)); -} - -/** - * art_drect_to_irect: Convert rectangle to integer rectangle. - * @dst: Where to store resulting integer rectangle. - * @src: The source rectangle. - * - * Find the smallest integer rectangle that encloses @src. - **/ -void -art_drect_to_irect (ArtIRect *dst, ArtDRect *src) -{ - dst->x0 = floor (src->x0); - dst->y0 = floor (src->y0); - dst->x1 = ceil (src->x1); - dst->y1 = ceil (src->y1); -}