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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* -*-c++-*- Present3D - Copyright (C) 1999-2006 Robert Osfield
*
* This software is open source and may be redistributed and/or modified under
* the terms of the GNU General Public License (GPL) version 2.0.
* The full license is in LICENSE.txt file included with this distribution,.
*
* This software 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
* include LICENSE.txt for more details.
*/
#include "ExportHTML.h"
#include <osgDB/FileNameUtils>
#include <osgDB/WriteFile>
#include <sstream>
#include <iostream>
template<typename A, typename B, typename C>
std::string createString(const A& a, const B& b, const C& c)
{
std::ostringstream hos;
hos << a << b << c;
return hos.str();
}
template<typename A, typename B, typename C, typename D>
std::string createString(const A& a, const B& b, const C& c, const D& d)
{
std::ostringstream hos;
hos << a << b << c << d;
return hos.str();
}
class SnapImageDrawCallback : public osg::Camera::DrawCallback
{
public:
SnapImageDrawCallback():
_snapImageOnNextFrame(false)
{
}
void setFileName(const std::string& filename) { _filename = filename; }
const std::string& getFileName() const { return _filename; }
void setSnapImageOnNextFrame(bool flag) { _snapImageOnNextFrame = flag; }
bool getSnapImageOnNextFrame() const { return _snapImageOnNextFrame; }
virtual void operator () (const osg::Camera& camera) const
{
if (!_snapImageOnNextFrame) return;
int x = static_cast<int>(camera.getViewport()->x());
int y = static_cast<int>(camera.getViewport()->y());
unsigned int width = static_cast<unsigned int>(camera.getViewport()->width());
unsigned int height = static_cast<unsigned int>(camera.getViewport()->height());
osg::ref_ptr<osg::Image> image = new osg::Image;
image->readPixels(x,y,width,height,
GL_RGB,GL_UNSIGNED_BYTE);
if (osgDB::writeImageFile(*image,_filename))
{
osg::notify(osg::NOTICE) << "Saved screen image to `"<<_filename<<"`"<< std::endl;
}
_snapImageOnNextFrame = false;
}
protected:
std::string _filename;
mutable bool _snapImageOnNextFrame;
};
std::string ExportHTML::createFileName(const std::string& basename, unsigned int page, const std::string& ext)
{
if (page==0) return basename+ext;
else return createString(basename,'_', page, ext);
}
bool ExportHTML::write(osgPresentation::SlideEventHandler* seh, osgViewer::Viewer& viewer, const std::string& filename)
{
std::string image_basename;
std::string image_ext;
std::string html_basename;
std::string html_ext;
std::string ext = osgDB::getFileExtension(filename);
if (ext=="html" || ext=="htm")
{
image_basename = osgDB::getNameLessExtension(filename);
image_ext = ".jpg";
html_basename = osgDB::getNameLessExtension(filename);
html_ext = std::string(".")+ext;
}
else
{
image_basename = osgDB::getNameLessExtension(filename);
image_ext = ".jpg";
}
std::cout<<"Writing slides to "<<image_basename<<"_[slidenumber]"<<image_ext<<std::endl;
osg::ref_ptr<SnapImageDrawCallback> sidc = new SnapImageDrawCallback;
osgViewer::Viewer::Cameras cameras;
viewer.getCameras(cameras);
for(osgViewer::Viewer::Cameras::iterator itr = cameras.begin();
itr != cameras.end();
++itr)
{
(*itr)->setPostDrawCallback(sidc.get());
}
std::string home_file = createFileName(html_basename, 0, html_ext);
unsigned int i;
for(i=0; i<seh->getNumSlides(); ++i)
{
std::ostringstream os;
os << image_basename <<"_"<<i<<image_ext;
sidc->setFileName(os.str());
sidc->setSnapImageOnNextFrame(true);
if (!html_basename.empty())
{
std::string htmlFileName = createFileName(html_basename, i, html_ext);
std::ofstream fout(htmlFileName.c_str());
if (fout)
{
std::string previous_file = i>0 ? createFileName(html_basename,i-1,html_ext) : "";
std::string next_file = i<seh->getNumSlides()-1 ? createFileName(html_basename,i+1,html_ext) : "";
std::cout<<"Writing html slides "<<htmlFileName<<std::endl;
fout<<"<html>"<<std::endl;
fout<<"<table width=\"100%\">"<<std::endl;
fout<<"<tr>"<<std::endl;
if (!previous_file.empty())
{
fout<<"<td align=\"left\" width=\"33%\"><a href=\""<<osgDB::getSimpleFileName(previous_file)<<"\"> Previous </a></td>"<<std::endl;
}
else
{
fout<<"<td align=\"left\" width=\"33%\"></td>"<<std::endl;
}
if (i != 0)
{
fout<<"<td align=\"center\" width=\"33%\"><a href=\""<<osgDB::getSimpleFileName(home_file)<<"\"> Home </a></td>"<<std::endl;
}
else
{
fout<<"<td align=\"center\" width=\"33%\"></td>"<<std::endl;
}
if (!next_file.empty())
{
fout<<"<td align=\"right\" width=\"33%\"><a href=\""<<osgDB::getSimpleFileName(next_file)<<"\"> Next </a></td>"<<std::endl;
}
else
{
fout<<"<td align=\"right\" width=\"33%\"></td>"<<std::endl;
}
fout<<"</tr>"<<std::endl;
fout<<"</table>"<<std::endl;
fout<<"<img src=\""<<osgDB::getSimpleFileName(os.str())<<"\">"<<std::endl;
fout<<"</html>"<<std::endl;
}
else
{
std::cout<<"Could not open '"<<filename<<"' for writing."<<std::endl;
}
}
// wait for all cull and draw threads to complete.
seh->selectSlide(i, osgPresentation::SlideEventHandler::LAST_POSITION);
// fire off the cull and draw traversals of the scene.
viewer.frame();
}
return true;
}
|
