RMTransform.m
2.78 KB
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
//
// RMTransform.m
//
// Copyright (c) 2008, Route-Me Contributors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#import "proj_api.h"
#import "RMTransform.h"
#import "RMProjection.h"
@implementation RMTransform
-(id) initFrom: (RMProjection*)_source To: (RMProjection*)_dest
{
if (![super init])
return nil;
source = _source;
destination = _dest;
is_source_latlong = pj_is_latlong(source.internalProjection);
is_dest_latlong = pj_is_latlong(destination.internalProjection);
if (source == nil || destination == nil)
{
[self dealloc];
return nil;
}
return self;
}
-(void) dealloc
{
[source release];
[destination release];
[super dealloc];
}
-(CLLocationCoordinate2D) projectForward: (CLLocationCoordinate2D)point AtZoom: (double)z
{
double zo = z;
if (is_source_latlong)
{
point.latitude *= DEG_TO_RAD;
point.longitude *= DEG_TO_RAD;
}
int retval = pj_transform(source.internalProjection, destination.internalProjection, 1, 0,
&point.longitude, &point.latitude, &z);
if (is_dest_latlong)
{
point.latitude *= RAD_TO_DEG;
point.longitude *= RAD_TO_DEG;
}
if (z != zo)
{
NSLog(@"z changed....");
}
if (retval != 0)
{ // This should be fixed to handle these errors...
NSLog(@"Error occured during pj_transform: %s", pj_strerrno(retval));
}
return point;
}
-(CLLocationCoordinate2D) projectInverse: (CLLocationCoordinate2D)point AtZoom: (double)z
{
pj_transform(destination.internalProjection, source.internalProjection, 1, 0,
&point.longitude,&point.latitude,&z);
return point;
}
@end