summaryrefslogtreecommitdiff
path: root/libs/cairo-1.16.0/src/cairo-rectangle.c
diff options
context:
space:
mode:
authorsanine <sanine.not@pm.me>2023-02-12 23:53:22 -0600
committersanine <sanine.not@pm.me>2023-02-12 23:53:22 -0600
commitf1fe73d1909a2448a004a88362a1a532d0d4f7c3 (patch)
treeab37ae3837e2f858de2932bcee9f26e69fab3db1 /libs/cairo-1.16.0/src/cairo-rectangle.c
parentf567ea1e2798fd3156a416e61f083ea3e6b95719 (diff)
switch to tinyobj and nanovg from assimp and cairo
Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-rectangle.c')
-rw-r--r--libs/cairo-1.16.0/src/cairo-rectangle.c299
1 files changed, 0 insertions, 299 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-rectangle.c b/libs/cairo-1.16.0/src/cairo-rectangle.c
deleted file mode 100644
index 2d51d7b..0000000
--- a/libs/cairo-1.16.0/src/cairo-rectangle.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
-/* cairo - a vector graphics library with display and print output
- *
- * Copyright © 2002 University of Southern California
- * Copyright © 2005 Red Hat, Inc.
- * Copyright © 2006 Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it either under the terms of the GNU Lesser General Public
- * License version 2.1 as published by the Free Software Foundation
- * (the "LGPL") or, at your option, under the terms of the Mozilla
- * Public License Version 1.1 (the "MPL"). If you do not alter this
- * notice, a recipient may use your version of this file under either
- * the MPL or the LGPL.
- *
- * You should have received a copy of the LGPL along with this library
- * in the file COPYING-LGPL-2.1; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
- * You should have received a copy of the MPL along with this library
- * in the file COPYING-MPL-1.1
- *
- * The contents of this file are subject to the Mozilla Public License
- * Version 1.1 (the "License"); you may not use this file except in
- * compliance with the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
- * OF ANY KIND, either express or implied. See the LGPL or the MPL for
- * the specific language governing rights and limitations.
- *
- * The Original Code is the cairo graphics library.
- *
- * The Initial Developer of the Original Code is University of Southern
- * California.
- *
- * Contributor(s):
- * Carl D. Worth <cworth@cworth.org>
- */
-
-#include "cairoint.h"
-
-#include "cairo-box-inline.h"
-
-const cairo_rectangle_int_t _cairo_empty_rectangle = { 0, 0, 0, 0 };
-const cairo_rectangle_int_t _cairo_unbounded_rectangle = {
- CAIRO_RECT_INT_MIN, CAIRO_RECT_INT_MIN,
- CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN,
- CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN,
-};
-
-cairo_private void
-_cairo_box_from_doubles (cairo_box_t *box,
- double *x1, double *y1,
- double *x2, double *y2)
-{
- box->p1.x = _cairo_fixed_from_double (*x1);
- box->p1.y = _cairo_fixed_from_double (*y1);
- box->p2.x = _cairo_fixed_from_double (*x2);
- box->p2.y = _cairo_fixed_from_double (*y2);
-}
-
-cairo_private void
-_cairo_box_to_doubles (const cairo_box_t *box,
- double *x1, double *y1,
- double *x2, double *y2)
-{
- *x1 = _cairo_fixed_to_double (box->p1.x);
- *y1 = _cairo_fixed_to_double (box->p1.y);
- *x2 = _cairo_fixed_to_double (box->p2.x);
- *y2 = _cairo_fixed_to_double (box->p2.y);
-}
-
-void
-_cairo_box_from_rectangle (cairo_box_t *box,
- const cairo_rectangle_int_t *rect)
-{
- box->p1.x = _cairo_fixed_from_int (rect->x);
- box->p1.y = _cairo_fixed_from_int (rect->y);
- box->p2.x = _cairo_fixed_from_int (rect->x + rect->width);
- box->p2.y = _cairo_fixed_from_int (rect->y + rect->height);
-}
-
-void
-_cairo_boxes_get_extents (const cairo_box_t *boxes,
- int num_boxes,
- cairo_box_t *extents)
-{
- assert (num_boxes > 0);
- *extents = *boxes;
- while (--num_boxes)
- _cairo_box_add_box (extents, ++boxes);
-}
-
-/* XXX We currently have a confusing mix of boxes and rectangles as
- * exemplified by this function. A #cairo_box_t is a rectangular area
- * represented by the coordinates of the upper left and lower right
- * corners, expressed in fixed point numbers. A #cairo_rectangle_int_t is
- * also a rectangular area, but represented by the upper left corner
- * and the width and the height, as integer numbers.
- *
- * This function converts a #cairo_box_t to a #cairo_rectangle_int_t by
- * increasing the area to the nearest integer coordinates. We should
- * standardize on #cairo_rectangle_fixed_t and #cairo_rectangle_int_t, and
- * this function could be renamed to the more reasonable
- * _cairo_rectangle_fixed_round.
- */
-
-void
-_cairo_box_round_to_rectangle (const cairo_box_t *box,
- cairo_rectangle_int_t *rectangle)
-{
- rectangle->x = _cairo_fixed_integer_floor (box->p1.x);
- rectangle->y = _cairo_fixed_integer_floor (box->p1.y);
- rectangle->width = _cairo_fixed_integer_ceil (box->p2.x) - rectangle->x;
- rectangle->height = _cairo_fixed_integer_ceil (box->p2.y) - rectangle->y;
-}
-
-cairo_bool_t
-_cairo_rectangle_intersect (cairo_rectangle_int_t *dst,
- const cairo_rectangle_int_t *src)
-{
- int x1, y1, x2, y2;
-
- x1 = MAX (dst->x, src->x);
- y1 = MAX (dst->y, src->y);
- /* Beware the unsigned promotion, fortunately we have bits to spare
- * as (CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN) < UINT_MAX
- */
- x2 = MIN (dst->x + (int) dst->width, src->x + (int) src->width);
- y2 = MIN (dst->y + (int) dst->height, src->y + (int) src->height);
-
- if (x1 >= x2 || y1 >= y2) {
- dst->x = 0;
- dst->y = 0;
- dst->width = 0;
- dst->height = 0;
-
- return FALSE;
- } else {
- dst->x = x1;
- dst->y = y1;
- dst->width = x2 - x1;
- dst->height = y2 - y1;
-
- return TRUE;
- }
-}
-
-/* Extends the dst rectangle to also contain src.
- * If one of the rectangles is empty, the result is undefined
- */
-void
-_cairo_rectangle_union (cairo_rectangle_int_t *dst,
- const cairo_rectangle_int_t *src)
-{
- int x1, y1, x2, y2;
-
- x1 = MIN (dst->x, src->x);
- y1 = MIN (dst->y, src->y);
- /* Beware the unsigned promotion, fortunately we have bits to spare
- * as (CAIRO_RECT_INT_MAX - CAIRO_RECT_INT_MIN) < UINT_MAX
- */
- x2 = MAX (dst->x + (int) dst->width, src->x + (int) src->width);
- y2 = MAX (dst->y + (int) dst->height, src->y + (int) src->height);
-
- dst->x = x1;
- dst->y = y1;
- dst->width = x2 - x1;
- dst->height = y2 - y1;
-}
-
-#define P1x (line->p1.x)
-#define P1y (line->p1.y)
-#define P2x (line->p2.x)
-#define P2y (line->p2.y)
-#define B1x (box->p1.x)
-#define B1y (box->p1.y)
-#define B2x (box->p2.x)
-#define B2y (box->p2.y)
-
-/*
- * Check whether any part of line intersects box. This function essentially
- * computes whether the ray starting at line->p1 in the direction of line->p2
- * intersects the box before it reaches p2. Normally, this is done
- * by dividing by the lengths of the line projected onto each axis. Because
- * we're in fixed point, this function does a bit more work to avoid having to
- * do the division -- we don't care about the actual intersection point, so
- * it's of no interest to us.
- */
-
-cairo_bool_t
-_cairo_box_intersects_line_segment (const cairo_box_t *box, cairo_line_t *line)
-{
- cairo_fixed_t t1=0, t2=0, t3=0, t4=0;
- cairo_int64_t t1y, t2y, t3x, t4x;
-
- cairo_fixed_t xlen, ylen;
-
- if (_cairo_box_contains_point (box, &line->p1) ||
- _cairo_box_contains_point (box, &line->p2))
- return TRUE;
-
- xlen = P2x - P1x;
- ylen = P2y - P1y;
-
- if (xlen) {
- if (xlen > 0) {
- t1 = B1x - P1x;
- t2 = B2x - P1x;
- } else {
- t1 = P1x - B2x;
- t2 = P1x - B1x;
- xlen = - xlen;
- }
-
- if ((t1 < 0 || t1 > xlen) &&
- (t2 < 0 || t2 > xlen))
- return FALSE;
- } else {
- /* Fully vertical line -- check that X is in bounds */
- if (P1x < B1x || P1x > B2x)
- return FALSE;
- }
-
- if (ylen) {
- if (ylen > 0) {
- t3 = B1y - P1y;
- t4 = B2y - P1y;
- } else {
- t3 = P1y - B2y;
- t4 = P1y - B1y;
- ylen = - ylen;
- }
-
- if ((t3 < 0 || t3 > ylen) &&
- (t4 < 0 || t4 > ylen))
- return FALSE;
- } else {
- /* Fully horizontal line -- check Y */
- if (P1y < B1y || P1y > B2y)
- return FALSE;
- }
-
- /* If we had a horizontal or vertical line, then it's already been checked */
- if (P1x == P2x || P1y == P2y)
- return TRUE;
-
- /* Check overlap. Note that t1 < t2 and t3 < t4 here. */
- t1y = _cairo_int32x32_64_mul (t1, ylen);
- t2y = _cairo_int32x32_64_mul (t2, ylen);
- t3x = _cairo_int32x32_64_mul (t3, xlen);
- t4x = _cairo_int32x32_64_mul (t4, xlen);
-
- if (_cairo_int64_lt(t1y, t4x) &&
- _cairo_int64_lt(t3x, t2y))
- return TRUE;
-
- return FALSE;
-}
-
-static cairo_status_t
-_cairo_box_add_spline_point (void *closure,
- const cairo_point_t *point,
- const cairo_slope_t *tangent)
-{
- _cairo_box_add_point (closure, point);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-/* assumes a has been previously added */
-void
-_cairo_box_add_curve_to (cairo_box_t *extents,
- const cairo_point_t *a,
- const cairo_point_t *b,
- const cairo_point_t *c,
- const cairo_point_t *d)
-{
- _cairo_box_add_point (extents, d);
- if (!_cairo_box_contains_point (extents, b) ||
- !_cairo_box_contains_point (extents, c))
- {
- cairo_status_t status;
-
- status = _cairo_spline_bound (_cairo_box_add_spline_point,
- extents, a, b, c, d);
- assert (status == CAIRO_STATUS_SUCCESS);
- }
-}
-
-void
-_cairo_rectangle_int_from_double (cairo_rectangle_int_t *recti,
- const cairo_rectangle_t *rectf)
-{
- recti->x = floor (rectf->x);
- recti->y = floor (rectf->y);
- recti->width = ceil (rectf->x + rectf->width) - floor (rectf->x);
- recti->height = ceil (rectf->y + rectf->height) - floor (rectf->y);
-}