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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
|
/*
* Kivio - Visual Modelling and Flowcharting
* Copyright (C) 2000-2001 theKompany.com & Dave Marotti
*
* 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.
*/
#include "kivio_common.h"
#include "kivio_connector_point.h"
#include <kdebug.h>
#include <tqstringlist.h>
#include <math.h>
#include <KoPoint.h>
#include <KoRect.h>
/**
* Read a floating point value from a @ref TQDomElement.
*
* @param e The @ref TQDomElement to read from
* @param att The attribute to locate
* @param def The default value to return if the attribute is not found
*
* This will read a floating point attribute from a @ref TQDomElement, and
* if it is not found, return the default value.
*/
float XmlReadFloat( const TQDomElement &e, const TQString &att, const float &def)
{
// Check if this value exists, if not, return the default
if( e.hasAttribute( att )==false )
return def;
// Read the attribute
TQString val = e.attribute( att );
bool ok=false;
// Make sure it is a floating point value. If not, return the default
float fVal = val.toFloat( &ok );
if( !ok )
{
kdDebug(43000) << "Invalid XML-value read for " << att.ascii() << ", expected float\n" << endl;
return 1.0;
}
// Return the value
return fVal;
}
/**
* Write a floating point value to a @ref TQDomElement
*
* @param e The @ref TQDomElement to write to
* @param att The attribute to write
* @param val The value of the attribute to write
*
* This will write a floating point value to a @ref TQDomElement.
*/
void XmlWriteFloat( TQDomElement &e, const TQString &att, const float &val )
{
e.setAttribute( att, (double)val );
}
/**
* Read an int value from a @ref TQDomElement.
*
* @param e The @ref TQDomElement to read from
* @param att The attribute to locate
* @param def The default value to return if the attribute is not found
*
* This will read an int attribute from a @ref TQDomElement, and
* if it is not found, return the default value.
*/
int XmlReadInt( const TQDomElement &e, const TQString &att, const int &def)
{
// Check if this value exists, if not, return the default
if( e.hasAttribute( att )==false )
return def;
// Read the attribute
TQString val = e.attribute( att, "1" );
bool ok=false;
// Make sure it is a floating point value. If not, return the default
int iVal = val.toInt( &ok );
if( !ok )
{
kdDebug(43000) << "Invalid XML-value read for " << att << " expected int\n" << endl;
return 1;
}
// Return the value
return iVal;
}
/**
* Write a int value to a @ref TQDomElement
*
* @param e The @ref TQDomElement to write to
* @param att The attribute to write
* @param val The value of the attribute to write
*
* This will write an int value to a @ref TQDomElement.
*/
void XmlWriteInt( TQDomElement &e, const TQString &att, const int &val )
{
e.setAttribute( att, (int)val );
}
/**
* Read an uint value from a @ref TQDomElement.
*
* @param e The @ref TQDomElement to read from
* @param att The attribute to locate
* @param def The default value to return if the attribute is not found
*
* This will read an uint attribute from a @ref TQDomElement, and
* if it is not found, return the default value.
*/
uint XmlReadUInt( const TQDomElement &e, const TQString &att, const uint &def)
{
// Check if this value exists, if not, return the default
if( e.hasAttribute( att )==false )
return def;
// Read the attribute
TQString val = e.attribute( att, "1" );
bool ok=false;
// Make sure it is a floating point value. If not, return the default
uint iVal = val.toUInt( &ok );
if( !ok )
{
kdDebug(43000) << "Invalid XML-value read for " << att.ascii() << ", expected uint\n" << endl;
return 1;
}
// Return the value
return iVal;
}
/**
* Write an uint value to a @ref TQDomElement
*
* @param e The @ref TQDomElement to write to
* @param att The attribute to write
* @param val The value of the attribute to write
*
* This will write an uint value to a @ref TQDomElement.
*/
void XmlWriteUInt( TQDomElement &e, const TQString &att, const uint &val )
{
e.setAttribute( att, (uint)val );
}
/**
* Read a @ref TQString from a @ref TQDomElement.
*
* @param e The @ref TQDomElement to read from
* @param att The attribute to locate
* @param def The default value to return if the attribute is not found
*
* This will read a TQString attribute from a @ref TQDomElement, and
* if it is not found, return the default value.
*/
TQString XmlReadString( const TQDomElement &e, const TQString &att, const TQString &def )
{
// Check if the attribute exists, if not, return the default
if( e.hasAttribute( att )==false )
return TQString(def);
// Otherwise return the attribute
else return e.attribute( att );
}
/**
* Write a TQString to a @ref TQDomElement
*
* @param e The @ref TQDomElement to write to
* @param att The attribute to write
* @param val The value of the attribute to write
*
* This will write a TQString to a @ref TQDomElement.
*/
void XmlWriteString( TQDomElement &e, const TQString &att, const TQString &val )
{
e.setAttribute( att, val );
}
/**
* Read a TQColor value from a @ref TQDomElement.
*
* @param e The @ref TQDomElement to read from
* @param att The attribute to locate
* @param def The default value to return if the attribute is not found
*
* This will read a TQColor attribute from a @ref TQDomElement, and
* if it is not found, return the default value.
*/
TQColor XmlReadColor( const TQDomElement &e, const TQString &att, const TQColor &def)
{
// Check if this value exists, if not, return the default
if( e.hasAttribute( att )==false )
return def;
// Read the attribute
TQString val = e.attribute( att, "1" );
bool ok=false;
TQColor newColor;
if( val.contains("#") ) // Is it #RRGGBB format?
{
newColor.setNamedColor(val);
return newColor;
}
// Otherwise it is a #xxxxxxxx color (rgb format)
// Make sure it is a uint value. If not, return the default
uint iVal = val.toUInt( &ok );
if( !ok )
{
kdDebug(43000) << "Invalid XML-value read for " << att.ascii() << ", expected TQColor" << endl;
return 1;
}
// Return the value
return TQColor(iVal);
}
/**
* Write a TQColor value to a @ref TQDomElement
*
* @param e The @ref TQDomElement to write to
* @param att The attribute to write
* @param val The value of the attribute to write
*
* This will write a TQColor value to a @ref TQDomElement.
*/
void XmlWriteColor( TQDomElement &e, const TQString &att, const TQColor &val )
{
// Write it out in #RRGGBB format
e.setAttribute( att, val.name() );
}
/**
* Read a double value from a @ref TQDomElement.
*
* @param e The @ref TQDomElement to read from
* @param att The attribute to locate
* @param def The default value to return if the attribute is not found
*
* This will read a double attribute from a @ref TQDomElement, and
* if it is not found, return the default value.
*/
double XmlReadDouble( const TQDomElement &e, const TQString &att, const double &def)
{
// Check if this value exists, if not, return the default
if( e.hasAttribute( att )==false )
return def;
// Read the attribute
TQString val = e.attribute( att, "1.0" );
bool ok=false;
// Make sure it is a floating point value. If not, return the default
double dVal = val.toDouble( &ok );
if( !ok )
{
kdDebug(43000) << "Invalid XML-value read for ," << att.ascii() << " expected double" << endl;
return 1.0;
}
// Return the value
return dVal;
}
/**
* Write a double value to a @ref TQDomElement
*
* @param e The @ref TQDomElement to write to
* @param att The attribute to write
* @param val The value of the attribute to write
*
* This will write a double value to a @ref TQDomElement.
*/
void XmlWriteDouble( TQDomElement &e, const TQString &att, const double &val )
{
e.setAttribute( att, (double)val );
}
#define WHICH_QUAD( vertex, hitPos ) \
( (vertex.x() > hitPos->x()) ? ((vertex.y() > hitPos->y()) ? 1 : 4 ) : ((vertex.y() > hitPos->y())?2:3))
#define X_INTERCEPT( point1, point2, hitY ) \
(point2.x() - (((point2.y()-hitY)*(point1.x()-point2.x()))/(point1.y()-point2.y())))
/**
* Determines if a point is inside a given polygon
* @param points An array of points representing the polygon
* @param numPoints The number of points in the array
* @param hitPos The point we are to check
*
* Code taken from Game Developer magazine page 22, January 1999 issue
* Explaination:
*
* A better strategy is to divide the polygon into quadrants centered on the test point.
* Start at the first vertex in the polygon and set a counter to 0. Anytime an edge crosses
* from one quadrant to the next, add one to the counter if it crosses clockwise around the
* test point and subtract one if it crosses counter-clockwise. If the edge crosses diagonally
* across two quadrants, you need to determine which side of the test point it crossed, and then
* either add or subtract 2.
*
* Quad layout:
* 1 2
* 4 3
*/
bool PointInPoly( KoPoint *points, int numPoints, KoPoint *hitPos )
{
int edge, next;
int quad, next_quad, delta, total;
edge = 0;
quad = WHICH_QUAD( points[ edge ], hitPos );
total = 0; // count of absolute sectors crossed
// Loop through all the vertices
do {
next = (edge + 1) % numPoints;
next_quad = WHICH_QUAD( points[ next ], hitPos );
// Calculate how many quads have been crossed
delta = next_quad - quad;
// Special case to handle crossings of more than one quad
switch( delta )
{
case 2: // If we crossed the middle, figure out if it was clockwise or counter clockwise
case -2: // Use the X-position at the hit point to determine which way around
if( X_INTERCEPT( points[edge], points[next], hitPos->y() ) > hitPos->x() )
delta = -delta;
break;
case 3: // Moving 3 quads is like moving back 1
delta = -1;
break;
case -3: // Moving back 3 is like moving forward 1
delta = 1;
break;
}
// Add in the delta
total += delta;
quad = next_quad;
edge = next;
} while( edge != 0 );
// After everything, if the total is 4, then we are inside
if((total==4) || (total==-4))
return true;
else
return false;
}
KoRect XmlReadRect( const TQDomElement &e, const TQString &att, const KoRect &def )
{
// Check if this value exists, if not, return the default
if( e.hasAttribute( att )==false )
return def;
// Read the attribute
TQString val = e.attribute( att );
if (val.find("[") == 0 && val.find("]") == (int)val.length()-1) {
val.remove(0,1);
val.remove(val.length()-1,1);
TQStringList vlist = TQStringList::split(",",val);
if (vlist.count() == 4) {
bool allOk = true;
bool ok = false;
double x = vlist[0].toDouble(&ok);
allOk = allOk & ok;
double y = vlist[1].toDouble(&ok);
allOk = allOk & ok;
double w = vlist[2].toDouble(&ok);
allOk = allOk & ok;
double h = vlist[3].toDouble(&ok);
allOk = allOk & ok;
if (allOk)
return KoRect(x, y, w, h);
}
}
return def;
}
void XmlWriteRect( TQDomElement &e, const TQString &att, const KoRect &val )
{
e.setAttribute( att, TQString("[%1,%2,%3,%4]").arg(val.x()).arg(val.y()).arg(val.width()).arg(val.height()) );
}
float shortestDistance( KivioConnectorPoint *pStart, KivioConnectorPoint *pEnd, KivioConnectorPoint *q )
{
float uX, uY;
float pqX, pqY;
uX = pStart->x() - pEnd->x();
uY = pStart->y() - pEnd->y();
pqX = pStart->x() - q->x();
pqY = pStart->y() - q->y();
float magTop = fabs(pqX*uY - (pqY*uX));
float magU = sqrt( uX*uX + uY*uY );
if( magU == 0.0f )
{
kdDebug(43000) << "shortestDistance() - SERIOUS ERROR: magU is 0.0f!\n";
return 10.0f;
}
return magTop / magU;
}
|