1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file ghost/intern/GHOST_Rect.cpp
* \ingroup GHOST
*/
#include "GHOST_Rect.h"
void GHOST_Rect::inset(GHOST_TInt32 i)
{
if (i > 0) {
// Grow the rectangle
m_l -= i;
m_r += i;
m_t -= i;
m_b += i;
}
else if (i < 0) {
// Shrink the rectangle, check for insets larger than half the size
GHOST_TInt32 i2 = i * 2;
if (getWidth() > i2) {
m_l += i;
m_r -= i;
}
else {
m_l = m_l + ((m_r - m_l) / 2);
m_r = m_l;
}
if (getHeight() > i2) {
m_t += i;
m_b -= i;
}
else {
m_t = m_t + ((m_b - m_t) / 2);
m_b = m_t;
}
}
}
GHOST_TVisibility GHOST_Rect::getVisibility(GHOST_Rect& r) const
{
bool lt = isInside(r.m_l, r.m_t);
bool rt = isInside(r.m_r, r.m_t);
bool lb = isInside(r.m_l, r.m_b);
bool rb = isInside(r.m_r, r.m_b);
GHOST_TVisibility v;
if (lt && rt && lb && rb) {
// All points inside, rectangle is inside this
v = GHOST_kFullyVisible;
}
else if (!(lt || rt || lb || rb)) {
// None of the points inside
// Check to see whether the rectangle is larger than this one
if ((r.m_l < m_l) && (r.m_t < m_t) && (r.m_r > m_r) && (r.m_b > m_b)) {
v = GHOST_kPartiallyVisible;
}
else {
v = GHOST_kNotVisible;
}
}
else {
// Some of the points inside, rectangle is partially inside
v = GHOST_kPartiallyVisible;
}
return v;
}
void GHOST_Rect::setCenter(GHOST_TInt32 cx, GHOST_TInt32 cy)
{
GHOST_TInt32 offset = cx - (m_l + (m_r - m_l) / 2);
m_l += offset;
m_r += offset;
offset = cy - (m_t + (m_b - m_t) / 2);
m_t += offset;
m_b += offset;
}
void GHOST_Rect::setCenter(GHOST_TInt32 cx, GHOST_TInt32 cy, GHOST_TInt32 w, GHOST_TInt32 h)
{
long w_2, h_2;
w_2 = w >> 1;
h_2 = h >> 1;
m_l = cx - w_2;
m_t = cy - h_2;
m_r = m_l + w;
m_b = m_t + h;
}
bool GHOST_Rect::clip(GHOST_Rect& r) const
{
bool clipped = false;
if (r.m_l < m_l) {
r.m_l = m_l;
clipped = true;
}
if (r.m_t < m_t) {
r.m_t = m_t;
clipped = true;
}
if (r.m_r > m_r) {
r.m_r = m_r;
clipped = true;
}
if (r.m_b > m_b) {
r.m_b = m_b;
clipped = true;
}
return clipped;
}
|
