summaryrefslogtreecommitdiffstats
path: root/kturtle/src/canvas.cpp
blob: c0b3910acaa40d3271265cae04e887b0447bcba8 (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
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
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
/*
 * Copyright (C) 2003 Cies Breijs <cies # kde ! nl>
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of version 2 of the GNU General Public
    License as published by the Free Software Foundation.

    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.
 */


 
// Note on this file:
// It contains 200 lines of code just to make sure very long line are drawn correctly
// till a certain extent... Beyond that extent the code just cuts the crap, since use user
// it then probably not doing anything usefull anymore; so he she will not notice the code
// is cheating a bit in order to prevent CPU hogging.
// If anyone has a good fix for this problem, than please test it with these logo scripts:

// # bastard script 1
// reset
// canvassize 350,348
// center
// for x = 1 to 255 [
//   fw x
//   tr x / 65
// ]

// # bastard script 2
// reset
// canvassize 350,350
// center
// for x = 1 to 255 [
//   fw x*x
//   tr x
// ]

// Thanks for looking at the code of KTurtle!

// Updated 21.10.2004 by Kiril Jovchev
//    -- Changed that position is kept in double values.
//       This makes accuracy higher.


// BEGIN includes, defines and constants

#include <cmath>

#include <tqpainter.h>

#include <kdebug.h>
#include <klocale.h>
#include <kmessagebox.h>

#include "settings.h"
#include "canvas.h"


// this function is used in executer and canvas:
#define ROUND2INT(x) ( (x) >= 0 ? (int)( (x) + .5 ) : (int)( (x) - .5 ) )

const double PI = 3.14159265358979323846;
const double DEG2RAD = 3.14159265358979323846/180;

// END



// BEGIN public methods

Canvas::Canvas(TQWidget *parent, const char *name) : TQCanvasView(0, parent, name)
{
	// Create a new canvas for this view
	canvas = new TQCanvas(TQT_TQOBJECT(parent));
	canvas->setAdvancePeriod(250);  // refresh-rate in [ms]
	
	// set initial values
	initValues();
	
	// at last we assign the canvas to the view
	setCanvas(canvas);
}

Canvas::~Canvas()
{
	delete sprite;
	delete spriteFrames;
}


TQPixmap* Canvas::canvas2Pixmap()
{
	pixmap = TQPixmap( canvas->width(), canvas->height() );
	TQPainter painter(&pixmap);
	canvas->drawArea(canvas->rect(), &painter);
	return &pixmap;
}

// END



// BEGIN public slots

void Canvas::slotClear()
{
	TQCanvasItemList list = canvas->allItems();
	TQCanvasItemList::Iterator it = list.begin();
	for (; it != list.end(); ++it)
	{
		// kill everything but the turtle (who lives on a seperate layer)
		if ( *it && !( (*it)->z() == 250 ) ) delete *it;
	}
}

void Canvas::slotClearSpriteToo()
{
	TQCanvasItemList list = canvas->allItems();
	TQCanvasItemList::Iterator it = list.begin();
	for (; it != list.end(); ++it)
	{
		if (*it) delete *it;
	}
}


void Canvas::slotGo(double x, double y)
{
	int intX = ROUND2INT(x);
	int intY = ROUND2INT(y);
	
	if ( wrap && !canvas->onCanvas(intX, intY) )
	{
		TQPoint offsetPoint = offset(intX, intY);
		posX = x - ( offsetPoint.x() * canvasWidth );
		posY = y - ( offsetPoint.y() * canvasHeight );
	}
	else
	{
		posX = x;
		posY = y;
	}
	updateSpritePos();
}

void Canvas::slotGoX(double x)
{
	int intX = ROUND2INT(x);
	int intPosY = ROUND2INT(posY);
	if ( wrap && !canvas->onCanvas(intX, intPosY) )
	{
		TQPoint offsetPoint = offset(intX, intPosY);
		posX = x - ( offsetPoint.x() * canvasWidth );
	}
	else posX = x;
	updateSpritePos();
}

void Canvas::slotGoY(double y)
{
	int intY = ROUND2INT(y);
	int intPosX = ROUND2INT(posX);
	if ( wrap && !canvas->onCanvas(intPosX, intY) )
	{
		TQPoint offsetPoint = offset(intPosX, intY);
		posY = y - ( offsetPoint.y() * canvasHeight );
	}
	else posY = y;
	updateSpritePos();
}

void Canvas::slotForward(double x)
{
	double posXnew = posX + ( x * sin(direction * DEG2RAD) );
	double posYnew = posY - ( x * cos(direction * DEG2RAD) );
	if (pen) lineShell(posX, posY, posXnew, posYnew);
	slotGo(posXnew, posYnew);
}

void Canvas::slotBackward(double x)
{
	double posXnew = posX - ( x * sin(direction * DEG2RAD) );
	double posYnew = posY + ( x * cos(direction * DEG2RAD) );
	if (pen) lineShell(posX, posY, posXnew, posYnew);
	slotGo(posXnew, posYnew);
}

void Canvas::slotDirection(double deg)
{
	direction = deg;
	updateSpriteAngle();
}

void Canvas::slotTurnLeft(double deg)
{
	direction = direction - deg;
	updateSpriteAngle();
}

void Canvas::slotTurnRight(double deg)
{
	direction = direction + deg;
	updateSpriteAngle();
}

void Canvas::slotCenter()
{
	posX = canvasWidth / 2;
	posY = canvasHeight / 2;
	updateSpritePos();
}

void Canvas::slotSetPenWidth(int w)
{
	if (w == 1) penWidth = 0; // 0 gives 1 pixel lines using fast algorithem
	else penWidth = w;
}

void Canvas::slotPenUp()
{
	pen = false;
}

void Canvas::slotPenDown()
{
	pen = true;
}

void Canvas::slotSetFgColor(int r, int g, int b)
{
	// shouldn't it be checked if: ( 0 =< r, g, b =< 255) ?
	fgR = r;
	fgG = g;
	fgB = b;
}

void Canvas::slotSetBgColor(int r, int g, int b)
{
	canvas->setBackgroundColor( TQColor(r, g, b) );
}

void Canvas::slotResizeCanvas(int x, int y)
{
	if (x <= 0 || y <= 0)
	{
		// TODO put error message
		x = 100;
		y = 100;
	}
	canvasWidth = x;
	canvasHeight = y;
	canvas->resize(x, y);
	emit CanvasResized(); 
}


// I'm having major problems with the canvas and qt-3.2
// qt-3.3 will fix it and the supposed fix is allready in qt-copy
// i'll not work any further on sprites, while i dont have qt-3.3 or a fresh qt-copy

void Canvas::slotSpriteShow()
{
	sprite->show();
}

void Canvas::slotSpriteHide()
{
	sprite->hide();
}

void Canvas::slotSpritePress()
{
}

void Canvas::slotSpriteChange(int x)
{
	sprite->setFrame(x);
	sprite->move(ROUND2INT(posX - sprite->width()/2), ROUND2INT(posY - sprite->height()/2));
}

void Canvas::slotPrint(TQString text)
{
	TQCanvasText* t = new TQCanvasText(text, font, canvas);
	// text does not do the wrapping, never... sorry
	t->setColor( TQColor(fgR, fgG, fgB) );
	t->move(ROUND2INT(posX), ROUND2INT(posY));
	t->show();
}

void Canvas::slotFontType(TQString family, TQString extra)
{
	font.setFamily(family);
	font.setBold( extra.contains("bold") > 0 );
	font.setItalic( extra.contains("italic") > 0 );
	font.setUnderline( extra.contains("underline") > 0 );
	font.setOverline( extra.contains("overline") > 0 );
	font.setStrikeOut( extra.contains("strikeout") > 0 );
}

void Canvas::slotFontSize(int px)
{
	font.setPixelSize(px);
}

void Canvas::slotWrapOn()
{
	wrap = true;
}

void Canvas::slotWrapOff()
{
	wrap = false;
}

void Canvas::slotReset()
{
	slotClearSpriteToo();
	initValues();
}

// END



// BEGIN private methods

void Canvas::initValues()
{
	// canvas size
	slotResizeCanvas( Settings::canvasWidth(), Settings::canvasHeight() );
	canvasWidth = Settings::canvasWidth();
	canvasHeight = Settings::canvasHeight();
	// colors
	canvas->setBackgroundColor( TQColor(255, 255, 255) ); // background
	fgR = 0; // pencolor (forground)
	fgG = 0;
	fgB = 0;
	// pen, wrap, direction and font
	penWidth = 0;
	pen = true;
	wrap = true;
	direction = 0;
	font = TQFont("serif", 18);
	// the position
	posX = canvasWidth / 2;
	posY = canvasHeight / 2;
	// construct the default sprite
	loadSpriteFrames("turtle");
	updateSpritePos();
	updateSpriteAngle();
	sprite->show();
}


void Canvas::lineShell(double xa, double ya, double xb, double yb)
{
	// line can fallback into this function in case of cutLoop == true
	cutLoop = false;
	// Reset the loop detection memory
	prevStartPos3 = prevStartPos2 = prevStartPos1 = prevEndPos3 = prevEndPos2 = prevEndPos1 = TQPoint(0, 0);
	// and go!
	line(xa, ya, xb, yb);
}

void Canvas::line(double xa, double ya, double xb, double yb)
{
	TQCanvasLine* l = new TQCanvasLine(canvas);
	int intXa = ROUND2INT(xa);
	int intYa = ROUND2INT(ya);
	int intXb = ROUND2INT(xb);
	int intYb = ROUND2INT(yb);	
	l->setPoints(intXa, intYa, intXb, intYb);
	l->setPen( TQPen(TQColor(fgR, fgG, fgB), penWidth, SolidLine) );
	l->setZ(1);
	l->show();
	// kdDebug(0)<<"Canvas::line(); xa:"<<xa<<", ya:"<<ya<<", xb:"<<xb<<", yb:"<<yb<<endl;
	if ( wrap && !canvas->onCanvas( ROUND2INT(xb), ROUND2INT(yb) ) )
	{
		if (endlessLoop( TQPoint(intXa, intYa), TQPoint(intXb, intYb) ) == true) // detect for endless loop
		{
			slotCenter();
			kdDebug(0)<<"Canvas::line(): ENDLESS LOOP DETECTED, BROKE THE LOOP"<<endl;
			cutLoop = true;
			return;
		}
		
		TQPoint translation = translationFactor(xa, ya, xb, yb);
		if (translation == TQPoint(0, 0) )
		{
			// this could never happen in theory
			kdDebug(0)<<"Canvas::line(): ***********ERRORRR***********"<<endl;
			return;
		}
		// kdDebug(0)<<"Canvas::line(); translate by: <<tranlation<<endl;
		line (xa + translation.x() * canvasWidth, ya + translation.y() * canvasHeight, 
		      xb + translation.x() * canvasWidth, yb + translation.y() * canvasHeight);
		if (cutLoop == true)
		{
			// kdDebug(0)<<"Canvas::line(): cutLoop is set to TRUE!  ABORT LINE MISSION"<<endl;
			return;
		}
	}
}

bool Canvas::endlessLoop(TQPoint begin, TQPoint end)
{
	// kdDebug(0)<<"prevStartPos3: "<<prevStartPos3<<", prevStartPos2: "<<prevStartPos2<<", prevStartPos1: "<<prevStartPos1<<", prevStartPos0: "<<begin<<", prevEndPos3: "<<prevEndPos3<<", prevEndPos2: "<<prevEndPos2<<", prevEndPos1: "<<prevEndPos1<<", prevEndPos0: "<<end<<endl;
	if ( prevStartPos2 == begin && prevStartPos3 == prevStartPos1 &&
	     prevEndPos2   == end   && prevEndPos3   == prevEndPos1 )
	{
		// this is to break the horrible endless loop bug that i cannot fix...
		// i need more simple reproductions of this bug to really find it
		// for now i say it is something with TQCanvas but i'm likely wrong on thisone
		// kdDebug(0)<<"Canvas::endlessLoop TRUE!!"<<endl;
		return true;
	}
	else
	{
		// kdDebug(0)<<"Canvas::endlessLoop FASLE!!"<<endl;
		prevStartPos3 = prevStartPos2;
		prevStartPos2 = prevStartPos1;
		prevStartPos1 = begin;
		prevEndPos3 = prevEndPos2;
		prevEndPos2 = prevEndPos1;
		prevEndPos1 = end;
		return false;
	}
	return false; // fallback will not be used
}

bool Canvas::pointInRange(double px, double py, double xa, double ya, double xb, double yb)
{
	if ( ( ( px >= xa && px <= xb ) || ( px <= xa && px >= xb ) ) &&
	     ( ( py >= ya && py <= yb ) || ( py <= ya && py >= yb ) ) ) return true;
	return false;
}

TQPoint Canvas::offset(int x, int y)
{
	// This funktion makes is easy to read since deviding int's is a weird thing:
	// int x = 5 / 2,  outputs: x = 2,  with: 5 % 2 = 1 (the rest value) 
	if (x < 0) x = x - canvasWidth;
	if (y < 0) y = y - canvasHeight;
	TQPoint offsetPoint( x / canvasWidth, y / canvasHeight);
	return offsetPoint;
}

TQPoint Canvas::translationFactor(double xa, double ya, double xb, double yb)
{
	// this class returns a TQPoint which can be used to properly 'wrap' a line
	TQPoint crossPoint[4]; // under wicked circumstances we can need this
	                      // namely when crossing both corners, we have 4 bordercrossings
	TQPoint translate[4];
	int i = 0;
	if ( (xb - xa) > -0.00001 && (xb - xa) < 0.00001 ) // check for an infinite tangent (direction coefficient)
	{
		i++;
		translate[i]  = TQPoint( 0, 1 );
		crossPoint[i] = TQPoint( ROUND2INT(xa), 0 );
		i++;
		translate[i]  = TQPoint(0,-1 );
		crossPoint[i] = TQPoint( ROUND2INT(xa), canvasHeight );
	}
	else
	{
		// Here we find out what crossing points the line has with canvas border lines (lines are ENDLESS here)
		
		// f(t) == (yb - ya) / (xb - xa) * t + ya - (A * xa) == A*t + B
		double A    = (yb - ya) / (xb - xa);
		double B    = ya - (A * xa);
		
		double x_sT = -B / A;                              // A * x_sT + B == 0   =>  x_sT == -B / A 
		double x_sB = ( (double)(canvasHeight) - B ) / A;  // A * x_sB + B == CH  =>  x_sB == (CH - B) / A
		double y_sL = B;                                   // A * 0 + B == y_sL   =>  y_sL == B
		double y_sR = ( A * (double)(canvasWidth) ) + B;   // A * CW + B == y_sR
		// kdDebug(0)<<"Canvas::translationFactor; rc:"<<A<<", xTop:"<<x_sT<<", xBot:"<<x_sB<<", yLft:"<<y_sL<<", yRft:"<<y_sR<<". "<<endl;
		
		// Here we find out what crossing points are on the borders AND on the linePIECES
		// pointInRange only checks wether the crossing point of the ENDLESS line is on the line PIECE.
		if ( 0 <= x_sT && x_sT <= canvasWidth && pointInRange(x_sT, 0, xa, ya, xb, yb) )
		{
			i++;
			translate[i]  = TQPoint( 0, 1 );
			crossPoint[i] = TQPoint( ROUND2INT(x_sT), 0 );
		}
		if ( 0 <= x_sB && x_sB <= canvasWidth && pointInRange(x_sB, canvasHeight, xa, ya, xb, yb) )
		{
			i++;
			translate[i]  = TQPoint( 0,-1 );
			crossPoint[i] = TQPoint( ROUND2INT(x_sB), ROUND2INT(canvasHeight) );
		} 
		if ( 0 <= y_sL && y_sL <= canvasHeight && pointInRange(0, y_sL, xa, ya, xb, yb) )
		{
			i++;
			translate[i]  = TQPoint( 1, 0 );
			crossPoint[i] = TQPoint( 0, ROUND2INT(y_sL) );
		}
		if ( 0 <= y_sR && y_sR <= canvasHeight && pointInRange(canvasWidth, y_sR, xa, ya, xb, yb) )
		{
			i++;
			translate[i]  = TQPoint(-1, 0 );
			crossPoint[i] = TQPoint( ROUND2INT(canvasWidth), ROUND2INT(y_sR) );
		}
	
		if ( i == 0 )
		{
			// kdDebug(0)<<"Canvas::translationFactor:  FIRST NO BORDER CROSSINGS DETECTED"<<endl;
			TQPoint returnValue = TQPoint(0, 0); // initiate the returnValue
			// Here a fallback if the line has no crossings points with any borders.
			// This mostly happens because of unlucky rounding, when this happens the line is nearly
			// crossing a corner of the canvas.
			// This code make sure the line is tranlated back onto the canvas.
			// The -2 and +2 was just something i learnt from examples... I HAVE NO PROOF FOR THIS!
			// This, luckily, allmost never happens.
			if ( -2 <= x_sT && x_sT <= (canvasWidth + 2) && pointInRange(x_sT, 0, xa, ya, xb, yb) )
			{
				returnValue = returnValue + TQPoint(0, 1);
			}
			if ( -2 <= x_sB && x_sB <= (canvasWidth + 2) && pointInRange(x_sB, canvasHeight, xa, ya, xb, yb) )
			{
				returnValue = returnValue + TQPoint(0,-1);
			} 
			if ( -2 <= y_sL && y_sL <= (canvasHeight + 2) && pointInRange(0, y_sL, xa, ya, xb, yb) )
			{
				returnValue = returnValue + TQPoint(1, 0);
			}
			if ( -2 <= y_sR && y_sR <= (canvasHeight + 2)  && pointInRange(canvasWidth, y_sR, xa, ya, xb, yb) )
			{
				returnValue = returnValue + TQPoint(-1, 0);
			}
		
			if ( returnValue == TQPoint(0, 0) )
			{
				// kdDebug(0)<<"Canvas::translationFactor:  *****This shouldn't happen (1) *****"<<endl;
				// and this doesnt happen, that why +3 and -3 are ok values and the code above works.
			}
			return returnValue;
		}
	}
	
	TQPoint returnValue = TQPoint(0, 0); // a new returnValue TQPoint gets inited
	if (i == 1)
	{
		// only one border crossing, this is normal when the start point
		// is within the canvas and no corners are crossed
		// kdDebug(0)<<"***only one border crossing!"<<endl;
		return translate[1];
	}
	if (i > 1) 
	{
		// more than one border crossing starting point if of the canvas
		// we now have to find out which crossing occurs 'first' to know how to translate the line
		// NOTE2SELF: the line does NOT have to start on the canvas!!
		TQPoint endPos( ROUND2INT(xb), ROUND2INT(yb));
		int smallestSize = ( TQPoint( ROUND2INT(xa), ROUND2INT(ya) ) - endPos ).manhattanLength();
		// smallestSize is initiated to the total size of the line
		for (int ii = 1; ii <= i; ii++)
		{
			int testSize = ( crossPoint[ii] - endPos ).manhattanLength(); // size till the crosspoint
			if (testSize < smallestSize) // if testSize is smaller then...
			{
				smallestSize = testSize;       // ...it becomes smallestSize
				returnValue = translate[ii];
				// and the returnValue is updated to the corresponing translaton factors
				// kdDebug(0)<<"Canvas::translationFactor: UPDATED"<<endl;
			}
			else if (testSize == smallestSize) // this only happens on corners
			{
				// kdDebug(0)<<"Canvas::translationFactor: CORNER EXCEPTION"<<endl;
				returnValue = TQPoint(0, 0);
				if      (xb < 0)            returnValue = returnValue + TQPoint( 1, 0);
				else if (xb > canvasWidth)  returnValue = returnValue + TQPoint(-1, 0);
				
				if      (yb < 0)            returnValue = returnValue + TQPoint( 0, 1);
				else if (yb > canvasHeight) returnValue = returnValue + TQPoint( 0,-1);
				
				return returnValue;
			}
		}
		// kdDebug(0)<<"Canvas::translationFactor:  NOT RETURNED YET SO DOING IT NOW"<<endl;
		return returnValue;
	}
	// kdDebug(0)<<"Canvas::translationFactor:  *****This shouldn't happen (3) *****"<<endl;
	return returnValue;
}



// Sprite related methods:

void Canvas::loadSpriteFrames(TQString name)
{
	// read the pixmaps name.0001.png, name.0002.png, ..., name.0035.png: the different rotations
	// #0000 for 0 or 360, #0001 for 10, #0002 for 20, ..., #0018 for 180, etc.
	
	// WARNING if the dir doesnt exists the app will crash!!!
	// This will be fixed in qt3.3 and in the current qt-copy
	TQPixmap turtlePix = TQPixmap(locate("data","kturtle/pics/turtle.0000.png") );
	if ( turtlePix.isNull() )
	{
		KMessageBox::sorry( this,
			i18n("The turtle picture could not be found. "
			     "Please check your installation."), i18n("Error") );
		return;
	}
	TQString spritePath = locate("data","kturtle/pics/"+name+".0000.png");
	spritePath.remove(".0000.png");
	spriteFrames = new TQCanvasPixmapArray(spritePath+".%1.png", 36);
	sprite = new TQCanvasSprite(spriteFrames, canvas);
	sprite->setZ(250);
}

void Canvas::updateSpritePos()
{
	sprite->move( posX - ( sprite->width() / 2 ), posY - ( sprite->height() / 2 ), -1 );
}

void Canvas::updateSpriteAngle()
{
	// get the direction back on the 1st circle 
	while (direction < 0 || direction >= 360)
	{
		if (direction >= 360)  direction = direction - 360;
		if (direction <  0)    direction = direction + 360;
	}
	// convert to degrees, fix the direction, divide by 10 (for picnr), and round
	int i = (int) ( direction / 10 );
	// kdDebug(0)<<"########## direction = "<<direction<<";  int i = "<< i << endl;
	// int i = (int) ( ( ( (-direction * 180) / PI ) / 10) + 0.000000001 );
	sprite->setFrame(i);
	updateSpritePos(); // pixmaps of different rotations have different sizes, so refresh
}

// END

    
#include "canvas.moc"