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olutil.h
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1 /* -*-C-*-
2 ********************************************************************************
3 *
4 * File: olutil.h (Formerly olutil.h)
5 * Description:
6 * Author: Mark Seaman, SW Productivity
7 * Created: Fri Oct 16 14:37:00 1987
8 * Modified: Wed Jul 10 14:21:55 1991 (Mark Seaman) marks@hpgrlt
9 * Language: C
10 * Package: N/A
11 * Status: Reusable Software Component
12 *
13 * (c) Copyright 1987, Hewlett-Packard Company.
14 ** Licensed under the Apache License, Version 2.0 (the "License");
15 ** you may not use this file except in compliance with the License.
16 ** You may obtain a copy of the License at
17 ** http://www.apache.org/licenses/LICENSE-2.0
18 ** Unless required by applicable law or agreed to in writing, software
19 ** distributed under the License is distributed on an "AS IS" BASIS,
20 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 ** See the License for the specific language governing permissions and
22 ** limitations under the License.
23 *
24 *********************************************************************************/
25 #ifndef OLUTIL_H
26 #define OLUTIL_H
27
28 /*----------------------------------------------------------------------
29 I n c l u d e s
30 ----------------------------------------------------------------------*/
31 #include "blobs.h"
32
33 /*----------------------------------------------------------------------
34 M a c r o s
35 ----------------------------------------------------------------------*/
36 /**********************************************************************
37 * is_inside_angle
38 *
39 * Return true if the edgept supplied as input is an inside angle. This
40 * is determined by the angular change of the vectors from point to
41 * point.
42
43 **********************************************************************/
44
45 #define is_inside_angle(pt) \
46 (angle_change ((pt)->prev, (pt), (pt)->next) < chop_inside_angle)
47
48 /**********************************************************************
49 * same_outline_bounds
50 *
51 * Return TRUE if these two outlines have the same bounds.
52 **********************************************************************/
53
54 #define same_outline_bounds(outline,other_outline) \
55 (outline->topleft.x == other_outline->topleft.x && \
56 outline->topleft.y == other_outline->topleft.y && \
57 outline->botright.x == other_outline->botright.x && \
58 outline->botright.y == other_outline->botright.y) \
59
60
61 /**********************************************************************
62 * weighted_edgept_dist
63 *
64 * Return the distance (squared) between the two edge points.
65 **********************************************************************/
66
67 #define weighted_edgept_dist(p1,p2,chop_x_y_weight) \
68 (((p1)->pos.x - (p2)->pos.x) * \
69 ((p1)->pos.x - (p2)->pos.x) * chop_x_y_weight + \
70 ((p1)->pos.y - (p2)->pos.y) * \
71 ((p1)->pos.y - (p2)->pos.y))
72
73 /*----------------------------------------------------------------------
74 F u n c t i o n s
75 ----------------------------------------------------------------------*/
76 void correct_blob_order(TBLOB *blob1, TBLOB *blob2);
77
78 void eliminate_duplicate_outlines(TBLOB *blob);
79
80 void setup_blob_outlines(TBLOB *blob);
81
82 #endif