canvas_variant/qtcanvas.cpp File Reference

#include "qtcanvas.h"
#include <QtGui/QApplication>
#include <QtGui/QBitmap>
#include <QtGui/QDesktopWidget>
#include <QtGui/QImage>
#include <QtGui/QPainter>
#include <QtCore/QTimer>
#include <QtCore/qhash.h>
#include <QtCore/qset.h>
#include <QtCore/qalgorithms.h>
#include <QtGui/qevent.h>
#include <QtGui/qpainterpath.h>
#include <stdlib.h>

Include dependency graph for canvas_variant/qtcanvas.cpp:

Classes
struct	_EdgeTableEntry
struct	_ScanLineList
struct	_ScanLineListBlock
struct	BRESINFO
struct	DDXPointRec
struct	EdgeTable
class	QPolygonalProcessor
class	QtCanvasChunk
class	QtCanvasClusterizer
class	QtCanvasData
class	QtCanvasItemExtra
class	QtCanvasItemLess
class	QtCanvasPolygonScanner
class	QtCanvasViewData
class	QtCanvasWidget
class	QtPolygonScanner

Macros
#define	BRESINCRPGON(d, minval, m, m1, incr1, incr2)
#define	BRESINCRPGONSTRUCT(bres)   BRESINCRPGON(bres.d, bres.minor, bres.m, bres.m1, bres.incr1, bres.incr2)
#define	BRESINITPGON(dy, x1, x2, xStart, d, m, m1, incr1, incr2)
#define	BRESINITPGONSTRUCT(dmaj, min1, min2, bres)
#define	EVALUATEEDGEEVENODD(pAET, pPrevAET, y)
#define	EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET)
#define	MAXINT   0x7fffffff
#define	MININT   -MAXINT
#define	NUMPTSTOBUFFER   200
#define	SLLSPERBLOCK   25

Typedefs
typedef struct DDXPointRec *	DDXPointPtr
typedef struct _EdgeTableEntry	EdgeTableEntry
typedef struct _ScanLineList	ScanLineList
typedef struct _ScanLineListBlock	ScanLineListBlock

Functions
static bool	collision_double_dispatch (const QtCanvasSprite *s1, const QtCanvasPolygonalItem *p1, const QtCanvasRectangle *r1, const QtCanvasEllipse *e1, const QtCanvasText *t1, const QtCanvasSprite *s2, const QtCanvasPolygonalItem *p2, const QtCanvasRectangle *r2, const QtCanvasEllipse *e2, const QtCanvasText *t2)
static const QBrush &	defaultPolygonBrush ()
static const QPen &	defaultPolygonPen ()
static int	gcd (int a, int b)
static void	include (QRect &r, const QRect &rect)
static void	micomputeWAET (EdgeTableEntry *AET)
static bool	miCreateETandAET (int count, DDXPointPtr pts, EdgeTable *ET, EdgeTableEntry *AET, EdgeTableEntry *pETEs, ScanLineListBlock *pSLLBlock)
static void	miFreeStorage (ScanLineListBlock *pSLLBlock)
static bool	miInsertEdgeInET (EdgeTable *ET, EdgeTableEntry *ETE, int scanline, ScanLineListBlock **SLLBlock, int *iSLLBlock)
static int	miInsertionSort (EdgeTableEntry *AET)
static void	miloadAET (EdgeTableEntry *AET, EdgeTableEntry *ETEs)
bool	qt_testCollision (const QtCanvasSprite *s1, const QtCanvasSprite *s2)
static int	scm (int a, int b)

Macro Definition Documentation

BRESINCRPGON

#define BRESINCRPGON	(		d,
			minval,
			m,
			m1,
			incr1,
			incr2
	)

Value:

    { \
    if (m1 > 0) { \
        if (d > 0) { \
            minval += m1; \
            d += incr1; \
        } \
        else { \
            minval += m; \
            d += incr2; \
        } \
    } else {\
        if (d >= 0) { \
            minval += m1; \
            d += incr1; \
        } \
        else { \
            minval += m; \
            d += incr2; \
        } \
    } \
}

BRESINCRPGONSTRUCT

#define BRESINCRPGONSTRUCT

(

bres

)

BRESINCRPGON(bres.d, bres.minor, bres.m, bres.m1, bres.incr1, bres.incr2)

BRESINITPGON

#define BRESINITPGON	(		dy,
			x1,
			x2,
			xStart,
			d,
			m,
			m1,
			incr1,
			incr2
	)

Value:

    { \
    int dx;      /* local storage */ \
\
    /* \
     *  if the edge is horizontal, then it is ignored \
     *  and assumed not to be processed.  Otherwise, do this stuff. \
     */ \
    if ((dy) != 0) { \
        xStart = (x1); \
        dx = (x2) - xStart; \
        if (dx < 0) { \
            m = dx / (dy); \
            m1 = m - 1; \
            incr1 = -2 * dx + 2 * (dy) * m1; \
            incr2 = -2 * dx + 2 * (dy) * m; \
            d = 2 * m * (dy) - 2 * dx - 2 * (dy); \
        } else { \
            m = dx / (dy); \
            m1 = m + 1; \
            incr1 = 2 * dx - 2 * (dy) * m1; \
            incr2 = 2 * dx - 2 * (dy) * m; \
            d = -2 * m * (dy) + 2 * dx; \
        } \
    } \
}

BRESINITPGONSTRUCT

#define BRESINITPGONSTRUCT	(		dmaj,
			min1,
			min2,
			bres
	)

Value:

        BRESINITPGON(dmaj, min1, min2, bres.minor, bres.d, \
                     bres.m, bres.m1, bres.incr1, bres.incr2)

EVALUATEEDGEEVENODD

#define EVALUATEEDGEEVENODD	(		pAET,
			pPrevAET,
			y
	)

Value:

   { \
   if (pAET->ymax == y) {          /* leaving this edge */ \
      pPrevAET->next = pAET->next; \
      pAET = pPrevAET->next; \
      if (pAET) \
         pAET->back = pPrevAET; \
   } \
   else { \
      BRESINCRPGONSTRUCT(pAET->bres) \
      pPrevAET = pAET; \
      pAET = pAET->next; \
   } \
}

EVALUATEEDGEWINDING

#define EVALUATEEDGEWINDING	(		pAET,
			pPrevAET,
			y,
			fixWAET
	)

Value:

   { \
   if (pAET->ymax == y) {          /* leaving this edge */ \
      pPrevAET->next = pAET->next; \
      pAET = pPrevAET->next; \
      fixWAET = 1; \
      if (pAET) \
         pAET->back = pPrevAET; \
   } \
   else { \
      BRESINCRPGONSTRUCT(pAET->bres); \
      pPrevAET = pAET; \
      pAET = pAET->next; \
   } \
}

MAXINT

#define MAXINT   0x7fffffff

MININT

#define MININT   -MAXINT

NUMPTSTOBUFFER

#define NUMPTSTOBUFFER   200

SLLSPERBLOCK

#define SLLSPERBLOCK   25

Typedef Documentation

DDXPointPtr

typedef struct DDXPointRec * DDXPointPtr

EdgeTableEntry

typedef struct _EdgeTableEntry EdgeTableEntry

ScanLineList

typedef struct _ScanLineList ScanLineList

ScanLineListBlock

typedef struct _ScanLineListBlock ScanLineListBlock

Function Documentation

collision_double_dispatch()

static bool collision_double_dispatch ( const QtCanvasSprite *  s1, const QtCanvasPolygonalItem *  p1, const QtCanvasRectangle *  r1, const QtCanvasEllipse *  e1, const QtCanvasText *  t1, const QtCanvasSprite *  s2, const QtCanvasPolygonalItem *  p2, const QtCanvasRectangle *  r2, const QtCanvasEllipse *  e2, const QtCanvasText *  t2  )

static

References QtCanvasEllipse::angleLength(), QtCanvasPolygonalItem::areaPointsAdvanced(), QtCanvasItem::boundingRectAdvanced(), QtCanvasEllipse::height(), qt_testCollision(), QtCanvasEllipse::width(), QtCanvasItem::x(), QtCanvasItem::xVelocity(), QtCanvasItem::y(), and QtCanvasItem::yVelocity().

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defaultPolygonBrush()

static const QBrush& defaultPolygonBrush ( )

static

defaultPolygonPen()

static const QPen& defaultPolygonPen ( )

static

gcd()

static int gcd ( int  a, int  b  )

static

References a.

Referenced by scm().

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include()

static void include ( QRect &  r, const QRect &  rect  )

static

micomputeWAET()

static void micomputeWAET ( EdgeTableEntry *  AET )

static

References _EdgeTableEntry::ClockWise, _EdgeTableEntry::next, and _EdgeTableEntry::nextWETE.

miCreateETandAET()

static bool miCreateETandAET ( int  count, DDXPointPtr  pts, EdgeTable *  ET, EdgeTableEntry *  AET, EdgeTableEntry *  pETEs, ScanLineListBlock *  pSLLBlock  )

static

miFreeStorage()

static void miFreeStorage ( ScanLineListBlock *  pSLLBlock )

static

References _ScanLineListBlock::next.

miInsertEdgeInET()

static bool miInsertEdgeInET ( EdgeTable *  ET, EdgeTableEntry *  ETE, int  scanline, ScanLineListBlock **  SLLBlock, int *  iSLLBlock  )

static

References _EdgeTableEntry::bres, _ScanLineList::edgelist, BRESINFO::minor, _EdgeTableEntry::next, _ScanLineList::next, _ScanLineListBlock::next, _ScanLineList::scanline, EdgeTable::scanlines, and SLLSPERBLOCK.

miInsertionSort()

static int miInsertionSort ( EdgeTableEntry *  AET )

static

References _EdgeTableEntry::back, _EdgeTableEntry::bres, BRESINFO::minor, and _EdgeTableEntry::next.

miloadAET()

static void miloadAET ( EdgeTableEntry *  AET, EdgeTableEntry *  ETEs  )

static

References _EdgeTableEntry::back, _EdgeTableEntry::bres, BRESINFO::minor, and _EdgeTableEntry::next.

qt_testCollision()

bool qt_testCollision	(	const QtCanvasSprite *	s1,
		const QtCanvasSprite *	s2
	)

References QtCanvasItem::boundingRectAdvanced(), QtCanvasPixmap::collision_mask, and QtCanvasSprite::imageAdvanced().

Referenced by collision_double_dispatch().

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scm()

static int scm ( int  a, int  b  )

static

References a, and gcd().

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