Generic Drawing Functions

:Associate with "Generic Drawing Functions" More...

Defines
#define	DRAWGEN_4Connected   0x0080
#define	DRAWGEN_Closed   0x0002
#define	DRAWGEN_Highlight   0x0001
#define	DRAWGEN_NoLastPixel   0x0040
#define	TRACEGEN_8Connected   0x0001
Typedefs
typedef int(*	GDrawHSpanL )(INT32, INT32, INT32, void *)
typedef int(*	GDrawPointL )(INT32, INT32, void *)
typedef int(*	GTestPointL )(INT32, INT32, void *)
Functions
GEOMLIBEXPORT int	DrawLineGen (INT32 x1, INT32 y1, INT32 x2, INT32 y2, GDrawPointL gdrawpoint, void *userdata, UINT32 flags)
GEOMLIBEXPORT int	DrawLinesGen (LPOINT2D *points, int numpoints, GDrawPointL gdrawpoint, void *userdata, UINT32 flags)
GEOMLIBEXPORT int	DrawLineWideGen (INT32 x1, INT32 y1, INT32 x2, INT32 y2, double width, GDrawHSpanL gdrawhspan, GDrawPointL gdrawpoint, void *userdata, UINT32 flags)
int	FillCircleGen (INT32 x, INT32 y, INT32 radius, GDrawHSpanL gdrawhspan, void *userdata, UINT32 flags)
GEOMLIBEXPORT int	FillPolygonsGen (int numpolys, LPOLYGON *polys, GDrawHSpanL gdrawhspan, GDrawPointL gdrawpoint, void *userdata, MSTATUSINTERFACE statinterface, UINT32 flags)
int	FillSeededGenL (INT32 SeedX, INT32 SeedY, GTestPointL TestInside, GDrawHSpanL gdrawhspan, LPOINT2D *boundpt, void *userdata, UINT32 flags)
int	TraceBoundaryL (INT32 xstart, INT32 ystart, LPOLYGON *poly, GTestPointL testfunc, void *userdata, UINT32 flags)

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Detailed Description

:Associate with "Generic Drawing Functions"

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Define Documentation

#define DRAWGEN_4Connected   0x0080

Draw 4-connected lines in MxgDrawLineGenX(). Definition at line 53 of file drawgen.h.

#define DRAWGEN_Closed   0x0002

Set to "close" polylines, forming a polygon. Definition at line 51 of file drawgen.h.

#define DRAWGEN_Highlight   0x0001

"Highlight" when drawing Definition at line 50 of file drawgen.h.

#define DRAWGEN_NoLastPixel   0x0040

Don't draw last pixel in horizontal span when filling. Definition at line 52 of file drawgen.h.

#define TRACEGEN_8Connected   0x0001

Trace 8-connected boundary. Definition at line 55 of file drawgen.h.

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Typedef Documentation

typedef int(* GDrawHSpanL)(INT32, INT32, INT32, void *)

Generic horizontal span function. Definition at line 42 of file drawgen.h.

typedef int(* GDrawPointL)(INT32, INT32, void *)

Generic putpixel function. Definition at line 45 of file drawgen.h.

typedef int(* GTestPointL)(INT32, INT32, void *)

Generic function to test if point in region. Definition at line 48 of file drawgen.h.

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Function Documentation

GEOMLIBEXPORT int DrawLineGen (  INT32  x1, INT32  y1, INT32  x2, INT32  y2, GDrawPointL  gdrawpoint, void *  userdata, UINT32  flags )

Draw multiple connected lines on "generic display". Parameters: x1  Starting X coordinate y1  Starting Y coordinate x2  Ending X coordinate y2  Ending Y coordinate gdrawpoint  Generic putpixel function userdata  Data to pass on to drawhspan flags  Flags: DRAWGEN_4Connected Create 4-connected line (default is 8-connected)

GEOMLIBEXPORT int DrawLinesGen (  LPOINT2D *  points, int  numpoints, GDrawPointL  gdrawpoint, void *  userdata, UINT32  flags )

Draw multiple connected lines on "generic display". Parameters: points  Array of points numpoints  Number of points gdrawpoint  Generic putpixel function userdata  Data to pass on to drawhspan flags  Flags: DRAWGEN_4Connected Create 4-connected line (default is 8-connected) DRAWGEN_Closed Line defines close shape

GEOMLIBEXPORT int DrawLineWideGen (  INT32  x1, INT32  y1, INT32  x2, INT32  y2, double  width, GDrawHSpanL  gdrawhspan, GDrawPointL  gdrawpoint, void *  userdata, UINT32  flags )

Draw wide line on "generic display". Parameters: x1  Starting X coordinate y1  Starting Y coordinate x2  Ending X coordinate y2  Ending y coordinate width  Line width in pixels gdrawhspan  Generic horizontal span function gdrawpoint  Generic putpixel function userdata  Data to pass on to drawhspan flags  Flags: DRAWGEN_4Connected Create 4-connected line (default is 8-connected)

int FillCircleGen (  INT32  x, INT32  y, INT32  radius, GDrawHSpanL  gdrawhspan, void *  userdata, UINT32  flags )

Fill circle in generic bitmap. Parameters: x  X coordinate of center y  Y coordinate of center radius  Radius in pixels gdrawhspan  Generic horizontal span function userdata  Data to pass on to drawhspan flags  Flags (none currently)

GEOMLIBEXPORT int FillPolygonsGen (  int  numpolys, LPOLYGON *  polys, GDrawHSpanL  gdrawhspan, GDrawPointL  gdrawpoint, void *  userdata, MSTATUSINTERFACE  statinterface, UINT32  flags )

Fill polygon(s) in generic bitmap. Parameters: numpolys  Number of polygons to fill polys  Array of polygons to fill gdrawhspan  Generic horizontal span function gdrawpoint  Generic putpixel function userdata  Data to pass on to drawhspan/drawpoint statinterface  Status interface flags  Flags: DRAWGEN_NoLastPixel Don't draw last pixel in horizontal span when filling

int FillSeededGenL (  INT32  SeedX, INT32  SeedY, GTestPointL  TestInside, GDrawHSpanL  gdrawhspan, LPOINT2D *  boundpt, void *  userdata, UINT32  flags )

Perform seeded fill on "generic display" (LONG coordinates). Parameters: SeedX  Seed point X coordinate SeedY  Seed point Y coordinate TestInside  Function to test if a point is inside region gdrawhspan  Function to "draw" horizontal spans boundpt  Rightmost "boundary" point returned (NULL if not needed) userdata  Data to pass to TestInside and DrawHSpan functions flags  Flags (none currently defined)

int TraceBoundaryL (  INT32  xstart, INT32  ystart, LPOLYGON *  poly, GTestPointL  testfunc, void *  userdata, UINT32  flags )

Find boundary of a region (LONG coordinates). Parameters: xstart  X starting coordinate ystart  Y starting coordinate poly  Polygon returned testfunc  Function to test if point in region userdata  Data to be passed to testfunc flags  Flags: TRACEGEN_8Connected Trace 8-connected (allow diagonals) boundary

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