#include <rlsvganimator.h>

Collaboration diagram for rlSvgAnimator:

Public Member Functions
	rlSvgAnimator ()
virtual	~rlSvgAnimator ()
int	setSocket (int *socket)
int	setId (int Id)
int	read (const char infile, rlIniFile inifile=NULL)
int	writeSocket ()
	The following methods are for modifying a object within a SVG graphic identified by objectname.
int	svgPrintf (const char objectname, const char tag, const char *format,...)
int	svgRecursivePrintf (const char objectname, const char tag, const char *format,...)
int	svgSearchAndReplace (const char objectname, const char tag, const char before, const char after)
int	svgRecursiveSearchAndReplace (const char objectname, const char tag, const char before, const char after)
int	svgTextPrintf (const char objectname, const char format,...)
int	show (const char *objectname, int state)
int	setMatrix (const char *objectname, float sx, float alpha, float x0, float y0, float cx, float cy)
int	setMatrix (const char *objectname, rlSvgPosition &pos)
	The following methods are for moveing and zooming the whole SVG identified by mainObject. default: main.
int	setMainObject (const char *main_object)
const char *	mainObject ()
int	setXY0 (float x0, float y0)
float	x0 ()
float	y0 ()
int	setMouseXY0 (float x0, float y0)
float	mouseX0 ()
float	mouseY0 ()
int	setMouseXY1 (float x1, float y1)
float	mouseX1 ()
float	mouseY1 ()
int	setScale (float scale)
float	scale ()
int	zoomCenter (float newScale)
int	zoomRect ()
int	setMainObjectMatrix ()
int	setWindowSize (int width, int height)
float	windowWidth ()
float	windowHeight ()
int	moveMainObject (float x, float y)
Public Attributes
int	isModified
Private Member Functions
int	tcpsend (const char *buf, int len)
int	fillIniFile (rlIniFile inifile, const char line)
int	fileFillIniFile (const char infile, rlIniFile inifile)
Private Attributes
int	inifileState
int	inifileCount
rlSpreadsheetCell	inifileID
rlSpreadsheetTable	inifileTable
int *	s
int	id
float	svgX0
float	svgY0
float	svgWindowWidth
float	svgWindowHeight
float	svgScale
float	svgMouseX0
float	svgMouseY0
float	svgMouseX1
float	svgMouseY1
rlString	main_object_name

Detailed Description

This class allows you to animate SVG graphics within pvbrowser.
First the SVG is send to pvbrowser.
Then you may modify the SVG within the pvbrowser client.

Definition at line 48 of file rlsvganimator.h.

Constructor & Destructor Documentation

rlSvgAnimator::rlSvgAnimator ( )

Definition at line 113 of file rlsvganimator.cpp.

{
  s = NULL;
  id = 0;
  isModified = 1;

  // zoomer follows
  svgX0 = svgY0 = 0.0f;
  svgScale = 1.0f;
  svgWindowWidth  = 640.0f;
  svgWindowHeight = 480.0f;
  svgMouseX0 = svgMouseY0 = 0.0f;
  svgMouseX1 = svgMouseY1 = 0.0f;
  main_object_name.setText("main");
}

rlSvgAnimator::~rlSvgAnimator ( ) [virtual]

Definition at line 129 of file rlsvganimator.cpp.

{
}

Member Function Documentation

int rlSvgAnimator::fileFillIniFile	(	const char *	infile,
		rlIniFile *	inifile
	)		`[private]`

Definition at line 597 of file rlsvganimator.cpp.

{
  char line[MAXLINE];
  FILE *fin;

  fin = fopen(infile,"r");
  if(fin == NULL) return -1;
  while(fgets(line,sizeof(line)-1,fin) != NULL)
  {
    fillIniFile(inifile, line);
  }
  fclose(fin);
  return 0;
}

int rlSvgAnimator::fillIniFile	(	rlIniFile *	inifile,
		const char *	line
	)		`[private]`

Definition at line 539 of file rlsvganimator.cpp.

{
  char myline[MAXLINE],*cptr, *cptr2;
  const char *id;
  int i;

  strcpy(myline,line);
  cptr = strchr(myline,'\n');
  if(cptr != NULL) *cptr = '\0';

  if(myline[0] == '>' || strncmp(myline,"/>",2) == 0)
  { // end of data -> fill inifile
    if(inifileState == 1) // if id was found
    {
      for(i=0; i<inifileCount; i++)
      {
        id = inifileID.text();
        inifile->setText(id, inifileTable.text(1,i+1), inifileTable.text(2,i+1));
      }
    }
    inifileState = 0;
    inifileCount = 0;
    inifileID.clear();
    inifileTable.clear();
  }
  else if(myline[0] == '<')
  { // ignore this
  }
  else if(strncmp(myline,"id=",3) == 0)
  { // remenber id
    cptr = strchr(myline,'=');
    if(cptr != NULL)
    {
      cptr++; cptr++;
      cptr2 = strchr(cptr,'\"');
      if(cptr2 != NULL) *cptr2 = '\0';
      inifileID.setText(cptr);
      inifileState = 1; // id was found
    }
  }
  else
  { // fill this in table
    cptr = strchr(myline,'=');
    if(cptr != NULL)
    {
      *cptr = '\0';
      cptr++; cptr++;
      cptr2 = strrchr(cptr,'\"');
      if(cptr2 != NULL) *cptr2 = '\0';
      inifileTable.setText(1,inifileCount+1,myline);
      inifileTable.setText(2,inifileCount+1,cptr);
      inifileCount++;
    }
  }

  return 0;
}

const char * rlSvgAnimator::mainObject ( )

Definition at line 622 of file rlsvganimator.cpp.

{
  return main_object_name.text();
}

float rlSvgAnimator::mouseX0 ( )

Definition at line 653 of file rlsvganimator.cpp.

{
  return svgMouseX0;
}

float rlSvgAnimator::mouseX1 ( )

Definition at line 671 of file rlsvganimator.cpp.

{
  return svgMouseX1;
}

float rlSvgAnimator::mouseY0 ( )

Definition at line 658 of file rlsvganimator.cpp.

{
  return svgMouseY0;
}

float rlSvgAnimator::mouseY1 ( )

Definition at line 676 of file rlsvganimator.cpp.

{
  return svgMouseY1;
}

int rlSvgAnimator::moveMainObject	(	float	x,
		float	y
	)

move MainObject to position

Definition at line 757 of file rlsvganimator.cpp.

{
  isModified = 1;
  float xx0 = x0() + (x - mouseX0());
  float yy0 = y0() + (y - mouseY0());
  setXY0(xx0,yy0);
  setMainObjectMatrix();
  return 0;
}

int rlSvgAnimator::read	(	const char *	infile,
		rlIniFile *	inifile = `NULL`
	)

read SVG file infile and load it into the pvbrowser client. if inifile is given inifile will be set with properties within the SVG XML file. The id's of the SVG objects will result in section names of the inifile.

Definition at line 171 of file rlsvganimator.cpp.

{
  isModified = 1;
#ifdef RLUNIX
  rlSpawn rlsvg;
  int ret, use_stdout;
  char command[MAXLINE];
  const char *line;

  inifileState = 0;
  inifileCount = 0;
  if(inifile == NULL) use_stdout = 0;
  use_stdout = 0;
  if(s != NULL && *s == 1) use_stdout = 1;

  rlDebugPrintf("rlSvgAnimator step=1 infile=%s\n",infile);
  if(use_stdout == 0) 
  {
    sprintf(command,"rlsvgcat %s",infile);
    ret = rlsvg.spawn(command);
    if(ret < 0) return -1;
  }

  rlDebugPrintf("rlSvgAnimator step=2\n");

  if(id != 0 && s != NULL) // new style programming
  {
    sprintf(command,"gsvgRead(%d)\n",id);
    tcpsend(command,strlen(command));
    if(use_stdout == 0)
    {
      while((line = rlsvg.readLine()) != NULL)
      {
        tcpsend(line,strlen(line));
        if(inifile != NULL) fillIniFile(inifile, line);
      }
    }
    else
    {
      sprintf(command,"/usr/bin/rlsvgcat %s",infile);
      ret = system(command);
      if(ret == -1) return -1;
      if(inifile != NULL) 
      {
        char outfile[80];
        sprintf(outfile,"PVTMP%d.svg",*s);
        sprintf(command,"/usr/bin/rlsvgcat %s %s",infile,outfile);
        ret = system(command);
        if(ret == -1) return -1;
        fileFillIniFile(outfile, inifile);
        unlink(outfile);
      }  
    }
    sprintf(command,"\n<svgend></svgend>\n");
    tcpsend(command,strlen(command));
    return 0;
  }
  else 
  {
    return -1;
  }  
#else
  // Windows: use file instead of pipe
  FILE *fin;
  int  ret;
  char filename[1024];
  char cmd[1024];
  char command[MAXLINE];
  char line[MAXLINE];
  char *cptr;

  inifileState = 0;
  inifileCount = 0;
  if(s==NULL) sprintf(filename,"PVTEMP%s",infile);
  else        sprintf(filename,"PVTEMP%d%s",*s,infile);
  sprintf(cmd,"rlsvgcat %s %s",infile,filename);
  ret = system(cmd);
  if(ret < 0) return -1;
  fin = fopen(filename,"r");
  if(fin == NULL) return -1;
  sprintf(command,"gsvgRead(%d)\n",id);
  tcpsend(command,strlen(command));
  while(fgets(line,sizeof(line)-1,fin) != NULL)
  {
    cptr = strchr(line,0x0d);
    if(cptr != NULL) *cptr = '\0';
    cptr = strchr(line,0x0a);
    if(cptr != NULL) *cptr = '\0';
    tcpsend(line,strlen(line));
    tcpsend("\n",strlen("\n"));
    if(inifile != NULL) fillIniFile(inifile, line);
  }
  sprintf(command,"\n<svgend></svgend>\n");
  tcpsend(command, strlen(command));;
  unlink(filename);
  return 0;
#endif
}

float rlSvgAnimator::scale ( )

Definition at line 688 of file rlsvganimator.cpp.

{
  return svgScale;
}

int rlSvgAnimator::setId ( int Id )

initialize the id with the pvbrowser object id

Definition at line 277 of file rlsvganimator.cpp.

{
  isModified = 1;
  id = _id;
  return 0;
}

int rlSvgAnimator::setMainObject ( const char * main_object )

set/get the name of the MainObject . The object name holding the whole SVG graphic. default: main

Definition at line 614 of file rlsvganimator.cpp.

{
  isModified = 1;
  if(main_object == NULL) return -1; 
  main_object_name.setText(main_object);
  return 0;
}

int rlSvgAnimator::setMainObjectMatrix ( )

sets the MainObject matrix according to scale,x0,y0

Definition at line 732 of file rlsvganimator.cpp.

{
  isModified = 1;
  setMatrix(main_object_name.text(), svgScale, 0.0f, svgX0, svgY0, 0.0f, 0.0f);
  return 0;
}

int rlSvgAnimator::setMatrix	(	const char *	objectname,
		float	sx,
		float	alpha,
		float	x0,
		float	y0,
		float	cx,
		float	cy
	)

set transformation matrix of object

Definition at line 464 of file rlsvganimator.cpp.

{
  // sx    = scale x
  // alpha = rotation
  // x0,y0 = tranlation
  // cx,cy = rotation center
  //
  // matrix:
  // a11 a12 a13
  // a21 a22 a23
  // a31 a32 a33

  float a11, a12, a13, a21, a22, a23, a31, a32, a33, cx, cy;

  isModified = 1;
  cx = cx_in + x0;
  cy = cy_in + y0;

  a11 = sx*((float) cos(alpha));
  a12 = -sx*((float) sin(alpha));
  a13 = (x0 - cx)*((float) cos(alpha)) - (y0 - cy)*((float) sin(alpha)) + cx;
  a21 = sx*((float) sin(alpha));
  a22 = sx*((float) cos(alpha));
  a23 = (x0 - cx)*((float) sin(alpha)) + (y0 - cy)*((float) cos(alpha)) + cy;
  a31 = 0.0f;
  a32 = 0.0f;
  a33 = 1.0f;

  return svgPrintf(objectname,"transform=","matrix(%f,%f,%f,%f,%f,%f)",a11,a21,a12,a22,a13,a23);

/*********************************************************************************************

Definition
CTM := CurrentTransformationMatrix
t   := translate
r   := rotate
s   := scale

Equotiation
CTM = t(cx,cy)*r(a)*t(-cx,-cy)*t(x0,y0)*s(sx)

      |1 0 cx| |cos(a) -sin(a) 0| |1 0 -cx| |1 0 x0| |sx 0  0|
CTM = |0 1 cy|*|sin(a)  cos(a) 0|*|0 1 -cy|*|0 1 y0|*|0  sx 0|                            # OK
      |0 0 1 | |  0       0    1| |0 0  1 | |0 0 1 | |0  0  1|

      |1 0 cx| |cos(a) -sin(a) 0| |1 0 -cx| |sx 0  x0|
CTM = |0 1 cy|*|sin(a)  cos(a) 0|*|0 1 -cy|*|0  sx y0|                                    # OK
      |0 0 1 | |  0       0    1| |0 0  1 | |0  0  1 |

      |1 0 cx| |cos(a) -sin(a) 0| |sx 0  x0-cx|
CTM = |0 1 cy|*|sin(a)  cos(a) 0|*|0  sx y0-cy|                                           # OK
      |0 0 1 | |  0       0    1| |0  0  1    |

      |1 0 cx| |sx*cos(a) -sx*sin(a) (x0-cx)*cos(a)-(y0-cy)*sin(a)|
CTM = |0 1 cy|*|sx*sin(a)  sx*cos(a) (x0-cx)*sin(a)+(y0-cy)*cos(a)|                       # OK
      |0 0 1 | |  0          0                        1           |

      |sx*cos(a) -sx*sin(a) (x0-cx)*cos(a)-(y0-cy)*sin(a)+cx|
CTM = |sx*sin(a)  sx*cos(a) (x0-cx)*sin(a)+(y0-cy)*cos(a)+cy|                             # OK
      |  0          0                     1                 |

Check
with sx = 1 and a,x0,y0,cx,cy = 0

      |1 0 0|
CTM = |0 1 0|                                                                             # OK
      |0 0 1|

|x'|         |x|   |sx*cos(a)*x-sx*sin(a)*y+(x0-cx)*cos(a)-(y0-cy)*sin(a)+cx|   |1*x-0*y|
|y'| = CTM * |y| = |sx*sin(a)*x+sx*cos(a)*y+(x0-cx)*sin(a)+(y0-cy)*cos(a)+cy| = |0*x+1*y| # OK
|0 |         |0|   |                       0                                |   |   0   |

**********************************************************************************************/
}

int rlSvgAnimator::setMatrix	(	const char *	objectname,
		rlSvgPosition &	pos
	)

The following methods are for moveing and zooming the whole SVG identified by mainObject. default: main.

set transformation matrix of object

Definition at line 458 of file rlsvganimator.cpp.

{
  isModified = 1;
  return setMatrix(objectname, pos.sx, pos.alpha, pos.x0, pos.y0, pos.cx, pos.cy);
}

int rlSvgAnimator::setMouseXY0	(	float	x0,
		float	y0
	)

set/get mouse position 0 for the MainObject

Definition at line 645 of file rlsvganimator.cpp.

{
  isModified = 1;
  svgMouseX0 = x0;
  svgMouseY0 = y0;
  return 0;
}

int rlSvgAnimator::setMouseXY1	(	float	x1,
		float	y1
	)

set/get mouse position 1 for the MainObject

Definition at line 663 of file rlsvganimator.cpp.

{
  isModified = 1;
  svgMouseX1 = x1;
  svgMouseY1 = y1;
  return 0;
}

int rlSvgAnimator::setScale ( float scale )

set/get the scaling factor for the MainObject

Definition at line 681 of file rlsvganimator.cpp.

{
  isModified = 1;
  svgScale = scale;
  return 0;
}

int rlSvgAnimator::setSocket ( int * socket )

initialize the socket with pvbrowser p->s

Definition at line 270 of file rlsvganimator.cpp.

{
  isModified = 1;
  s = socket;
  return 0;
}

int rlSvgAnimator::setWindowSize	(	int	width,
		int	height
	)

call this method when the widget is resized

Definition at line 739 of file rlsvganimator.cpp.

{
  isModified = 1;
  svgWindowWidth  = (float) width;
  svgWindowHeight = (float) height;
  return 0;
}

int rlSvgAnimator::setXY0	(	float	x0,
		float	y0
	)

set/get x0,y0 coordinates for the MainObject

Definition at line 627 of file rlsvganimator.cpp.

{
  isModified = 1;
  svgX0 = x0;
  svgY0 = y0;
  return 0;
}

int rlSvgAnimator::show	(	const char *	objectname,
		int	state
	)

hide/show object state := 0=hide 1=show

Definition at line 441 of file rlsvganimator.cpp.

{
  rlDebugPrintf("rlSvgAnimator.show state=%d objectname=%s\n",state,objectname);
  isModified = 1;
  if(id != 0)
  {
    char buf[MAXLINE];
    sprintf(buf,"gsvgShow(%d,%d)\n",id,state);
    printf("buf=%s",buf);
    tcpsend(buf, strlen(buf));
    sprintf(buf,"%s\n",objectname);
    tcpsend(buf, strlen(buf));
    return 0;
  }
  return -1;
}

int rlSvgAnimator::svgPrintf	(	const char *	objectname,
		const char *	tag,
		const char *	format,
			...
	)

change a property of tag = "name="

Definition at line 306 of file rlsvganimator.cpp.

{
  char buf[MAXBUF+40];
  char text[MAXBUF];
  int  len = strlen(objectname);

  isModified = 1;
  if(id != 0)
  {
    sprintf(buf,"gsvgPrintf(%d)\n",id);
    tcpsend(buf, strlen(buf));
    sprintf(buf,"%s\n",objectname);
    tcpsend(buf, strlen(buf));
    sprintf(buf,"%s\n",tag);
    tcpsend(buf, strlen(buf));
    va_list ap;
    va_start(ap,format);
#ifdef RLWIN32
    _vsnprintf(text, MAXBUF - 1, format, ap);
#endif
#ifdef __VMS
    vsprintf(text, format, ap);
#endif
#ifdef RLUNIX
    vsnprintf(text, MAXBUF - 1, format, ap);
#endif
    va_end(ap);
    strcat(text,"\n");
    len = strlen(text);
    tcpsend(text, len);
    return len;
  }
  return -1;
}

int rlSvgAnimator::svgRecursivePrintf	(	const char *	objectname,
		const char *	tag,
		const char *	format,
			...
	)

recursively change a property of tag = "name="

Definition at line 341 of file rlsvganimator.cpp.

{
  char buf[MAXBUF+40];
  char text[MAXBUF];
  int  len;

  isModified = 1;
  sprintf(buf,"gsvgRecursivePrintf(%d)\n",id);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",objectname);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",tag);
  tcpsend(buf, strlen(buf));
  va_list ap;
  va_start(ap,format);
#ifdef RLWIN32
  _vsnprintf(text, MAXBUF - 1, format, ap);
#endif
#ifdef __VMS
  vsprintf(text, format, ap);
#endif
#ifdef RLUNIX
  vsnprintf(text, MAXBUF - 1, format, ap);
#endif
  va_end(ap);
  strcat(text,"\n");
  len = strlen(text);
  tcpsend(text, len);
  return len;
}

int rlSvgAnimator::svgRecursiveSearchAndReplace	(	const char *	objectname,
		const char *	tag,
		const char *	before,
		const char *	after
	)

recursively search for "before" within "tag=" property and replace it with "after". You may use wildcards within "before"

Definition at line 390 of file rlsvganimator.cpp.

{
  char buf[MAXBUF+40];

  isModified = 1;
  sprintf(buf,"gsvgRecursiveSearchAndReplace(%d)\n",id);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",objectname);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",tag);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",before);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",after);
  tcpsend(buf, strlen(buf));
  return 0;
}

int rlSvgAnimator::svgSearchAndReplace	(	const char *	objectname,
		const char *	tag,
		const char *	before,
		const char *	after
	)

search for "before" within "tag=" property and replace it with "after". You may use wildcards whin "before"

Definition at line 372 of file rlsvganimator.cpp.

{
  char buf[MAXBUF+40];

  isModified = 1;
  sprintf(buf,"gsvgSearchAndReplace(%d)\n",id);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",objectname);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",tag);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",before);
  tcpsend(buf, strlen(buf));
  sprintf(buf,"%s\n",after);
  tcpsend(buf, strlen(buf));
  return 0;
}

int rlSvgAnimator::svgTextPrintf	(	const char *	objectname,
		const char *	format,
			...
	)

change the text of "objectname"

Definition at line 408 of file rlsvganimator.cpp.

{
  char buf[MAXBUF+40];
  char text[MAXBUF];
  int  len = strlen(objectname);

  isModified = 1;
  if(id != 0)
  {
    sprintf(buf,"gsvgTextPrintf(%d)\n",id);
    tcpsend(buf, strlen(buf));
    sprintf(buf,"%s\n",objectname);
    tcpsend(buf, strlen(buf));
    va_list ap;
    va_start(ap,format);
#ifdef RLWIN32
    _vsnprintf(text, MAXBUF - 1, format, ap);
#endif
#ifdef __VMS
    vsprintf(text, format, ap);
#endif
#ifdef RLUNIX
    vsnprintf(text, MAXBUF - 1, format, ap);
#endif
    va_end(ap);
    strcat(text,"\n");
    len = strlen(text);
    tcpsend(text, len);
    return len;
  }
  return -1;
}

int rlSvgAnimator::tcpsend	(	const char *	buf,
		int	len
	)		`[private]`

Definition at line 133 of file rlsvganimator.cpp.

{
  int ret,bytes_left,first_byte;

  if(s == NULL) return -1;
  //rlDebugPrintf("tcpsend len=%d buf=%s",len,buf);
  bytes_left = len;
  first_byte = 0;
  while(bytes_left > 0)
  {
    if(*s == 1) // use stdout
    {
#ifdef __VMS
      ret = send(1,&buf[first_byte],bytes_left,MSG_NOSIGNAL);
#else
      ret = write(1,&buf[first_byte],bytes_left);
#endif
      if(ret <= 0) 
      {
        *s = -1;
        return -1;
      }
    }
    else // use socket
    {
      ret = send(*s,&buf[first_byte],bytes_left,MSG_NOSIGNAL);
      if(ret <= 0) 
      {
        *s = -1;
        return -1;
      }
    }
    bytes_left -= ret;
    first_byte += ret;
  }
  return 0;
}

float rlSvgAnimator::windowHeight ( )

Definition at line 752 of file rlsvganimator.cpp.

{
  return svgWindowHeight;
}

float rlSvgAnimator::windowWidth ( )

Definition at line 747 of file rlsvganimator.cpp.

{
  return svgWindowWidth;
}

int rlSvgAnimator::writeSocket ( )

The following methods are for modifying a object within a SVG graphic identified by objectname.

update the SVG graphic with: gBeginDraw(p,id); d->svgAnimator.writeSocket(); gEndDraw(p);

Definition at line 284 of file rlsvganimator.cpp.

{
  char buf[80];
  
  isModified = 0;

  if(s == NULL)
  {
    printf("rlSvgAnimator: ERROR please use setSocket first\n");
    return -1;
  }
  if(id != 0)
  {
    sprintf(buf,"gupdateSVG(%d)\n",id);
    tcpsend(buf, strlen(buf));
    return 0;
  }
  return -1;
}

float rlSvgAnimator::x0 ( )

Definition at line 635 of file rlsvganimator.cpp.

{
  return svgX0;
}

float rlSvgAnimator::y0 ( )

Definition at line 640 of file rlsvganimator.cpp.

{
  return svgY0;
}

int rlSvgAnimator::zoomCenter ( float newScale )

zooms the whole SVG graphic keeping it centered to the viewport

Definition at line 693 of file rlsvganimator.cpp.

{
  float oldX0, oldY0;

  isModified = 1;
  if (newScale > 1000) newScale = 1000.0f;

  oldX0 = (svgX0 - ((svgWindowWidth) * (1.0f - svgScale)) / 2.0f) / svgScale;
  oldY0 = (svgY0 - ((svgWindowHeight) * (1.0f - svgScale)) / 2.0f) / svgScale;

  svgScale  = newScale;

  svgX0 = oldX0*svgScale + ((svgWindowWidth) * (1.0f - svgScale)) / 2.0f;
  svgY0 = oldY0*svgScale + ((svgWindowHeight) * (1.0f - svgScale)) / 2.0f;

  return 0;
}

int rlSvgAnimator::zoomRect ( )

zooms the whole SVG graphic so that the visible section is from x0,x0 to x1,y1

Definition at line 711 of file rlsvganimator.cpp.

{
  float newScale, scale1, scale2, rectWidth, rectHeight;

  isModified = 1;
  rectWidth  = svgMouseX1-svgMouseX0;
  rectHeight = svgMouseY1-svgMouseY0;
  svgX0 = svgX0 + svgWindowWidth/2  - (svgMouseX0 + rectWidth/2);
  svgY0 = svgY0 + svgWindowHeight/2 - (svgMouseY0 + rectHeight/2);
  rectWidth  = rectWidth  / svgScale;
  rectHeight = rectHeight / svgScale;
  scale1 = svgWindowWidth  / rectWidth;
  scale2 = svgWindowHeight / rectHeight;

  if(scale1 < scale2) newScale = scale1;
  else                newScale = scale2;
  zoomCenter(newScale);

  return 0;
}