blob: 64f2df190d6a155f07a0761104108aa2fd528b23 (
plain)
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
|
//-----------------------------------------------------------------------------
// BSPLIB MODULE: VrmlFile.cpp
//
// Copyright (c) 1997-1998 by Markus Hadwiger
// All Rights Reserved.
//-----------------------------------------------------------------------------
// bsplib header files
#include "VrmlFile.h"
#include "BspObject.h"
#include "BspTool.h"
// qvlib header files
#include <QvDB.h>
#include <QvInput.h>
#include <QvNode.h>
#include <QvState.h>
BSPLIB_NAMESPACE_BEGIN
// file is read and parsed immediately after construction ---------------------
//
VrmlFile::VrmlFile( BspObjectList objectlist, const char *filename ) :
InputData3D( objectlist, filename, DONT_CREATE_OBJECT ),
m_bboxlist( NULL )
{
ParseObjectData();
}
// write outputfile before destruction ----------------------------------------
//
VrmlFile::~VrmlFile()
{
if ( m_inputok && !m_filename.IsNULL() )
WriteOutputFile();
delete m_bboxlist;
}
// apply all transformations to scene -----------------------------------------
//
void VrmlFile::ApplySceneTransformations()
{
BspObject *sceneobj = m_objectlist.getListHead();
for ( ; sceneobj; sceneobj = sceneobj->getNext() )
sceneobj->ApplyTransformation();
}
// enforce maximum extents for entire scene -----------------------------------
//
void VrmlFile::EnforceSceneExtents( BoundingBox& unionbox )
{
double fmext = getMaxExtents();
Vertex3 minvertex = unionbox.getMinVertex();
Vertex3 maxvertex = unionbox.getMaxVertex();
double extent_x = maxvertex.getX() - minvertex.getX();
double extent_y = maxvertex.getY() - minvertex.getY();
double extent_z = maxvertex.getZ() - minvertex.getZ();
double mext = extent_x;
if ( extent_y > mext ) mext = extent_y;
if ( extent_z > mext ) mext = extent_z;
double cfac = fmext / mext;
BspObject *sceneobj = m_objectlist.getListHead();
for ( ; sceneobj; sceneobj = sceneobj->getNext() )
sceneobj->ApplyScale( cfac );
}
// parse vrml 1.0 file and build data structures for all contained objects ----
//
int VrmlFile::ParseObjectData()
{
// open input data file
FileAccess input( m_filename, "r" );
InfoMessage( "Processing input data file (format='VRML V1.0') ..." );
// init qvlib database
QvDB::init();
// tie input file to QvInput object
QvInput inputdata;
inputdata.setFilePointer( input );
// read and parse vrml input data
QvNode *vrmlroot = NULL;
if ( QvDB::read( &inputdata, vrmlroot ) && ( vrmlroot != NULL ) ) {
InfoMessage( "\nObject data ok.\n" );
m_inputok = TRUE;
} else {
sprintf( line, "%sVRML tree data invalid.\n", parser_err_str );
ErrorMessage( line );
HandleCriticalError( CRITERR_ALLOW_RET );
delete vrmlroot;
return ( m_inputok = FALSE );
}
// create object for traversal state
QvState state( this );
// traverse entire vrml tree and construct scene representation for bsplib
vrmlroot->traverse( &state );
// if scene scale desired calculate union bounding box and scale entire scene
if ( getEnforceExtentsFlag() && ( m_bboxlist != NULL ) ) {
BoundingBox unionbox;
m_bboxlist->BoundingBoxListUnion( unionbox );
EnforceSceneExtents( unionbox );
}
delete vrmlroot;
return m_inputok;
}
// write output file(s) for objects constructed out of vrml file --------------
//
int VrmlFile::WriteOutputFile()
{
return FALSE;
}
BSPLIB_NAMESPACE_END
//-----------------------------------------------------------------------------
|
