rlSvgVdi Class Reference

#include <rlsvgvdi.h>

Collaboration diagram for rlSvgVdi:

Public Member Functions
	rlSvgVdi ()
	~rlSvgVdi ()
int	setOutput (int *socket_out, int idForPvbrowser=0)
int	setOutput (FILE *fout)
int	setOutput (const char *outputfilename)
int	setOutput (rlSpawn *pipe)
int	endOutput ()
const char *	svgHeader (int width=1280, int height=1024, int rbackground=255, int gbackground=255, int bbackground=255)
const char *	svgTrailer ()
const char *	drawEllipse (int x, int y, int rx, int ry)
const char *	moveTo (int x, int y)
const char *	lineTo (int x, int y)
const char *	line (int x1, int y1, int x2, int y2)
const char *	text (int x, int y, const char *text, int alignment=ALIGN_LEFT)
const char *	textInAxis (float x, float y, const char *text, int alignment)
const char *	box (int x, int y, int w, int h)
const char *	boxWithText (int x, int y, int w, int h, int fontsize, const char *xlabel, const char *ylabel, const char *rylabel)
const char *	rect (int x, int y, int w, int h)
const char *	xAxis (float start, float delta, float end, int draw=1)
const char *	yAxis (float start, float delta, float end, int draw=1)
const char *	xGrid ()
const char *	yGrid ()
const char *	rightYAxis (float start, float delta, float end, int draw=1)
const char *	drawSymbol (int x, int y, int type)
const char *	line (float *x, float *y, int n, int linestayle=LINESTYLE_NONE)
const char *	setColor (int r, int g, int b)
const char *	setFont (const char *family, int size, int weight, int italic)
const char *	setWidth (int w)
const char *	setLinestyle (const char *dasharray)
const char *	comment (const char *text)
const char *	svg_put (const char *text)
const char *	svg_printf (const char *format,...)
const char *	svg_d (int *x, int *y, int count)
const char *	svg_points (int *x, int *y, int count)
int	getFontsize ()
int	getBoxX ()
int	getBoxY ()
int	getBoxW ()
int	getBoxH ()

Public Attributes
int	outputState

Private Member Functions
int	perhapsSend (const char *text)
int	tx (float x)
int	ty (float y)

Private Attributes
int *	sout
FILE *	fout
rlSpawn *	pipe
rlString	filename
rlString	outputfilename
int	idForPvbrowser
rlString	svg
rlString	svg2
rlString	svg3
rlString	fontstring
char	stroke [16]
int	width
rlString	dasharray
rlString	lineoptions
rlString	textoptions
int	xold
int	yold
float	xmin
float	dx
float	xmax
float	ymin
float	dy
float	ymax
int	boxx
int	boxy
int	boxw
int	boxh
int	fontsize
int	sr
char	floatFormat [80]

Detailed Description

class for drawing xy-graphics and any svg graphics either on the client or on the server.

SVG (Tiny) is a flexible and powerfull graphics format.

It can be rendered on a pvbrowser DrawWidget on the client, 
  where the user will also be able to interact with the SVG (example: clicking on named objects within the SVG)
It can be rendered into another format by SVG converters on the server and/or the client
It can be used to implement scalable user interfaces especially when using on mobile devices

rlSvgVdi brings some conveniance functions to draw xy-graphics with SVG and 
some general SVG interface functions, that produce SVG content directly.

The Output might be send to File/Socket/stdout or simply collected as a rlString with all the generated SVG.

See example within pvbaddon/demos/rlsvgvdi

HINT 1: Use rlSpawn and the rlsvgcat utility to read static SVG templates and insert the content generated by rlSvgVdi dynamically into the output stream.
        You might use comment strings within the SVG for controlling the filter pipeline.

HINT 2: Use this class for the purpose of generating reports in pdf

HINT 3: Use SVG converters with a commandline interface to convert SVG to png, jpg, pdf ...
        Examples: rsvg, imagemagick
        https://wiki.gnome.org/action/show/Projects/LibRsvg
        http://imagemagick.org/script/index.php

Definition at line 79 of file rlsvgvdi.h.

Constructor & Destructor Documentation

rlSvgVdi()

rlSvgVdi::rlSvgVdi

(

)

Definition at line 40 of file rlsvgvdi.cpp.

{
  sout = NULL;
  fout = NULL;
  pipe = NULL;
  idForPvbrowser = 0;
  outputState = 0;
  fontsize = 10;
  fontstring.printf("font-family=\"%s\" font-weight=\"%s\" font-size=\"%d\"", "Times", "normal", fontsize);
  strcpy(stroke,"#000000"); // black
  lineoptions.printf("stroke=\"%s\"", stroke);
  textoptions.printf("stroke=\"%s\" %s", stroke, fontstring.text());
  strcpy(floatFormat,"%.2f");
  dx = dy = 1.0f;
  sr = 3;
  boxx = boxy = boxw = boxh = 0;
  xmin = 0.0f;
  xmax = 100.0f;
  ymin = 0.0f;
  ymax = 100.0f;
  width = 1;
  xold = yold = 0;
}

~rlSvgVdi()

rlSvgVdi::~rlSvgVdi

(

)

Definition at line 64 of file rlsvgvdi.cpp.

{
  endOutput();
}

Member Function Documentation

box()

const char * rlSvgVdi::box	(	int	x,
		int	y,
		int	w,
		int	h
	)

Definition at line 354 of file rlsvgvdi.cpp.

{
  boxx = x;
  boxy = y;
  boxw = w;
  boxh = h;
  svg2  = moveTo(x  ,y  );
  svg2 += lineTo(x+w,y  );
  svg2 += lineTo(x+w,y+h);
  svg2 += lineTo(x  ,y+h);
  svg2 += lineTo(x  ,y  );
  return svg2.text();
}

boxWithText()

const char * rlSvgVdi::boxWithText	(	int	x,
		int	y,
		int	w,
		int	h,
		int	fontsize,
		const char *	xlabel,
		const char *	ylabel,
		const char *	rylabel
	)

Definition at line 368 of file rlsvgvdi.cpp.

{
  svg3 = box(x,y,w,h);
  if(xlabel  != NULL) svg3 += text(x+w/2,y+h+fontsize*3,xlabel,ALIGN_CENTER);
  if(ylabel  != NULL) svg3 += text(x-fontsize*5,y+h/2,ylabel,ALIGN_VERT_CENTER);
  if(rylabel != NULL) svg3 += text(x+w+fontsize*5,y+h/2,rylabel,ALIGN_VERT_CENTER);
  return svg3.text();
}

comment()

const char * rlSvgVdi::comment

(

const char *

text

)

Definition at line 677 of file rlsvgvdi.cpp.

{
  svg.printf("<!-- %s -->\n", text);
  perhapsSend(svg.text());
  return svg.text();
}

drawEllipse()

const char * rlSvgVdi::drawEllipse	(	int	x,
		int	y,
		int	rx,
		int	ry
	)

Definition at line 273 of file rlsvgvdi.cpp.

{
  svg.printf("<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" %s />\n", x, y, rx, ry, lineoptions.text());
  perhapsSend(svg.text());
  return svg.text();
}

drawSymbol()

const char * rlSvgVdi::drawSymbol	(	int	x,
		int	y,
		int	type
	)

Definition at line 536 of file rlsvgvdi.cpp.

{
  //const char *cptr;
  int xnew, ynew;
  svg2 = "";
  switch(type)
  {
    case LINESTYLE_CIRCLE:
    case LINESTYLE_CIRCLE_NO_LINE:
      svg2 += drawEllipse(x-sr,y-sr,sr,sr);
      break;
    case LINESTYLE_CROSS:
    case LINESTYLE_CROSS_NO_LINE:
      xold = x+sr;
      yold = y-sr;
      svg2 += line(x-sr,y+sr,xold,yold);
      xold = x+sr;
      yold = y+sr;
      svg2 += line(x-sr,y-sr,xold,yold);
      break;
    case LINESTYLE_RECT:
    case LINESTYLE_RECT_NO_LINE:
      xold = x+sr;
      yold = y-sr;
      svg2 += line(x-sr,y-sr,xold,yold);
      xnew = x+sr;
      ynew = y+sr;
      svg2 += line(xold,yold,xnew,ynew);
      xold = xnew;
      yold = ynew;
      xnew = x-sr;
      ynew = y+sr;
      svg2 += line(xold,yold,xnew,ynew);
      xold = xnew;
      yold = ynew;
      xnew = x-sr;
      ynew = y-sr;
      svg2 += line(xold,yold,xnew,ynew);
      xold = xnew;
      yold = ynew;
      break;
    default:
      break;
  }
  return svg2.text();
}

endOutput()

int rlSvgVdi::endOutput

(

)

Definition at line 163 of file rlsvgvdi.cpp.

{
  if(sout != NULL && idForPvbrowser > 0)
  {
    char buf[80];
    sprintf(buf,"\n<svgend></svgend>\n");
    perhapsSend(buf);
    sprintf(buf,"gbeginDraw(%d)\n", idForPvbrowser);
    perhapsSend(buf);
    sprintf(buf,"gupdateSVG(%d)\n", idForPvbrowser);
    perhapsSend(buf);
    sprintf(buf,"gendDraw\n");
    perhapsSend(buf);
  }
  if(strlen(outputfilename.text()) == 0)
  {
  }
  else
  {
    if(fout != NULL) fclose(fout);
    fout = NULL;
  }
  if(pipe != NULL)
  {
    char buf[4];
    buf[0] = EOF;
    buf[1] = '\0';
    pipe->writeString(buf);
    pipe = NULL;
  }
  svg  = "";
  svg2 = "";
  svg3 = "";
  if(outputState < 0) return -1;
  outputState = 0;
  return 0;
}

getBoxH()

int rlSvgVdi::getBoxH

(

)

Definition at line 764 of file rlsvgvdi.cpp.

{
  return boxh;
}

getBoxW()

int rlSvgVdi::getBoxW

(

)

Definition at line 759 of file rlsvgvdi.cpp.

{
  return boxw;
}

getBoxX()

int rlSvgVdi::getBoxX

(

)

Definition at line 749 of file rlsvgvdi.cpp.

{
  return boxx;
}

getBoxY()

int rlSvgVdi::getBoxY

(

)

Definition at line 754 of file rlsvgvdi.cpp.

{
  return boxy;
}

getFontsize()

int rlSvgVdi::getFontsize

(

)

Definition at line 744 of file rlsvgvdi.cpp.

{
  return fontsize;
}

line() [1/2]

const char * rlSvgVdi::line	(	int	x1,
		int	y1,
		int	x2,
		int	y2
	)

Definition at line 299 of file rlsvgvdi.cpp.

{
  int xnew, ynew;
  xold = x2;
  yold = y2;
  xnew = x1;
  ynew = y1;
  svg.printf("<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" %s />\n", xold, yold, xnew, ynew, lineoptions.text());
  perhapsSend(svg.text());
  return svg.text();
}

line() [2/2]

const char * rlSvgVdi::line	(	float *	x,
		float *	y,
		int	n,
		int	linestayle = LINESTYLE_NONE
	)

Definition at line 583 of file rlsvgvdi.cpp.

{
  char buf[80];
  svg3 = "";
  if(linestyle != LINESTYLE_CROSS_NO_LINE && linestyle != LINESTYLE_CIRCLE_NO_LINE &&linestyle != LINESTYLE_RECT_NO_LINE )
  {
    //svg3 = moveTo(tx(x[0]),ty(y[0]));
    //for(int i=1; i<n; i++) svg3 += lineTo(tx(x[i]),ty(y[i]));
    svg3 = "<polyline points=\"";
    for(int i=0; i<n; i++)
    {
      sprintf(buf," %d,%d", tx(x[i]), ty(y[i]));
      svg3 += buf;
    }
    svg3 += "\"\n";
    svg3 += lineoptions.text();
    svg3 += " fill=\"none\"/>\n";
    perhapsSend(svg3.text());
  }  
  if(linestyle != LINESTYLE_NONE)
  {
    for(int i=1; i<n; i++) svg3 += drawSymbol(tx(x[i]),ty(y[i]),linestyle);
  }
  return svg3.text();
}

lineTo()

const char * rlSvgVdi::lineTo	(	int	x,
		int	y
	)

Definition at line 287 of file rlsvgvdi.cpp.

{
  int xnew, ynew;
  xnew = x;
  ynew = y;
  svg.printf("<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" %s />\n", xold, yold, xnew, ynew, lineoptions.text());
  xold = xnew;
  yold = ynew;
  perhapsSend(svg.text());
  return svg.text();
}

moveTo()

const char * rlSvgVdi::moveTo	(	int	x,
		int	y
	)

Definition at line 280 of file rlsvgvdi.cpp.

{
  xold = x;
  yold = y;
  return "";
}

perhapsSend()

int rlSvgVdi::perhapsSend ( const char *  text )

private

Definition at line 201 of file rlsvgvdi.cpp.

{
  if(outputState <= 0) return -1;
  if(sout != NULL)
  {
    int ret,bytes_left,first_byte;
    const char *cbuf;
    if(sout == NULL) return -1;
    if(*sout == -1) return -1;
    cbuf = text;
    bytes_left = strlen(text);
    first_byte = 0;

    while(bytes_left > 0)
    {
      ret = send(*sout,&cbuf[first_byte],bytes_left,MSG_NOSIGNAL);
      if(ret <= 0)
      {
        //disconnect();
        if(*sout != -1)
        {
#ifdef RLWIN32
          closesocket(*sout);
#else
          close(*sout);
#endif
        }
        *sout = -1;
        outputState = -1;
        return -1;
      }
      bytes_left -= ret;
      first_byte += ret;
    }
  }
  else if(fout != NULL)
  {
    if(fputs(text, fout) < 0)
    {
      outputState = -1;
    }  
  }
  else if(pipe != NULL)
  {
    if(pipe->writeString(text) < 0)
    {
      outputState = -1;
    }
  }
  else
  {
    outputState = 0;
  }
  return 0;
}

rect()

const char * rlSvgVdi::rect	(	int	x,
		int	y,
		int	w,
		int	h
	)

Definition at line 377 of file rlsvgvdi.cpp.

{
  svg2  = moveTo(x   ,y  );
  svg2 += lineTo(x+w ,y  );
  svg2 += lineTo(x+w ,y+h);
  svg2 += lineTo(x   ,y+h);
  svg2 += lineTo(x   ,y  );
  return svg2.text();
}

rightYAxis()

const char * rlSvgVdi::rightYAxis	(	float	start,
		float	delta,
		float	end,
		int	draw = 1
	)

Definition at line 493 of file rlsvgvdi.cpp.

{
float y;
int   x;
char  txt[80];

  ymin = start;
  dy   = delta;
  ymax = end;
  if(draw==0) return "";
  x = boxx+boxw;
  y = start;

  svg2 = "";
  while(y <= end)
  {
    xold = x;
    yold = ty(y);
    svg2 += moveTo(xold, yold);
    svg2 += lineTo(xold+8,yold);
    //p.drawLine(x,ty(y),xold,yold);
    sprintf(txt,floatFormat,y);
    beautyval(txt);
    svg2 += text(xold+10,yold,txt,ALIGN_LEFT);
    y += delta;
  }

  if(start < 0.0f && end > 0.0f)
  {
    int xnew, ynew;
    xold = boxx+boxw;
    yold = ty(0.0f);
    xnew = boxx+boxw;
    ynew = ty(0.0f);
    svg2 += moveTo(xold,yold);
    svg2 += lineTo(xnew,ynew);
    //p.drawLine(xold,yold,xnew,ynew);
    xold = xnew;
    yold = ynew;
  }
  return svg2.text();
}

setColor()

const char * rlSvgVdi::setColor	(	int	r,
		int	g,
		int	b
	)

Definition at line 609 of file rlsvgvdi.cpp.

{
  sprintf(stroke,"#%02x%02x%02x", r, g, b);
  lineoptions.printf("stroke=\"%s\"", stroke);
  if(strlen(dasharray.text()) > 0)
  {
    lineoptions += " stroke-dasharray=\"";
    lineoptions += dasharray.text();
    lineoptions += "\"";
  }
  if(width != 1)
  {
    rlString buf;
    buf.printf(" stroke-width=\"%d\"", width);
    lineoptions += buf.text();
  }
  textoptions.printf("stroke=\"%s\" %s", stroke, fontstring.text());
  return "";
}

setFont()

const char * rlSvgVdi::setFont	(	const char *	family,
		int	size,
		int	weight,
		int	italic
	)

Definition at line 629 of file rlsvgvdi.cpp.

{
  fontsize = size;
  if(weight == 1) fontstring.printf("font-family=\"%s\" font-weight=\"%s\" font-size=\"%d\"", family, "normal", size);
  else            fontstring.printf("font-family=\"%s\" font-weight=\"%s\" font-size=\"%d\"", family, "bold",   size);
  if(italic == 1) fontstring += " font-style=\"italic\"";
  textoptions.printf("stroke=\"%s\" %s", stroke, fontstring.text());
  return "";
}

setLinestyle()

const char * rlSvgVdi::setLinestyle

(

const char *

dasharray

)

Definition at line 658 of file rlsvgvdi.cpp.

{
  dasharray = _dasharray;
  lineoptions.printf("stroke=\"%s\"", stroke);
  if(strlen(dasharray.text()) > 0)
  {
    lineoptions += " stroke-dasharray=\"";
    lineoptions += dasharray.text();
    lineoptions += "\"";
  }
  if(width != 1)
  {
    rlString buf;
    buf.printf(" stroke-width=\"%d\"", width);
    lineoptions += buf.text();
  }
  return "";
}

setOutput() [1/4]

int rlSvgVdi::setOutput	(	int *	socket_out,
		int	idForPvbrowser = 0
	)

Definition at line 69 of file rlsvgvdi.cpp.

{
  pipe = NULL;
  sout = _socket_out;
  if(*sout < 0)
  {
    outputState = -1;
    return -1;
  }
  if(strlen(outputfilename.text()) == 0)
  {
  }
  else
  {
    if(fout != NULL) fclose(fout);
  }
  fout = NULL;
  outputfilename = "";
  idForPvbrowser = _idForPvbrowser;
  outputState = 1;
  if(idForPvbrowser > 0)
  {
    char buf[80];
    sprintf(buf,"gsvgRead(%d)\n", idForPvbrowser);
    perhapsSend(buf);
  }
  return 0;
}

setOutput() [2/4]

int rlSvgVdi::setOutput

(

FILE *

fout

)

Definition at line 98 of file rlsvgvdi.cpp.

{
  pipe = NULL;
  sout = NULL;
  if(strlen(outputfilename.text()) == 0)
  {
  }
  else
  {
    if(fout != NULL) fclose(fout);
  }
  fout = _fout;
  if(fout == NULL)
  {
    outputState = -1;
    return -1;
  }
  outputfilename = "";
  outputState = 1;
  return 0;
}

setOutput() [3/4]

int rlSvgVdi::setOutput

(

const char *

outputfilename

)

Definition at line 120 of file rlsvgvdi.cpp.

{
  pipe = NULL;
  sout = NULL;
  if(strlen(outputfilename.text()) == 0)
  {
  }
  else
  {
    if(fout != NULL) fclose(fout);
  }
  outputfilename = _outputfilename;
  fout = fopen(_outputfilename,"w");
  if(fout == NULL) 
  {
    outputState = -1;
    return -1;
  } 
  outputState = 1;
  return 0;
}

setOutput() [4/4]

int rlSvgVdi::setOutput

(

rlSpawn *

pipe

)

Definition at line 142 of file rlsvgvdi.cpp.

{
  pipe = _pipe;
  sout = NULL;
  if(strlen(outputfilename.text()) == 0)
  {
  }
  else
  {
    if(fout != NULL) fclose(fout);
  }
  outputfilename = "";
  if(pipe == NULL)
  {
    outputState = -1;
    return -1;
  }
  outputState = 1;
  return 0;
}

setWidth()

const char * rlSvgVdi::setWidth

(

int

w

)

Definition at line 639 of file rlsvgvdi.cpp.

{
  width = w;
  lineoptions.printf("stroke=\"%s\"", stroke);
  if(strlen(dasharray.text()) > 0)
  {
    lineoptions += " stroke-dasharray=\"";
    lineoptions += dasharray.text();
    lineoptions += "\"";
  }
  if(width != 1)
  {
    rlString buf;
    buf.printf(" stroke-width=\"%d\"", width);
    lineoptions += buf.text();
  }
  return "";
}

svg_d()

const char * rlSvgVdi::svg_d	(	int *	x,
		int *	y,
		int	count
	)

Definition at line 702 of file rlsvgvdi.cpp.

{
  char buf[80];
  svg = "d=\"";
  sprintf(buf,"M %d %d", x[0], y[0]);
  svg += buf;
  for(int i=1; i<count; i++)
  {
    sprintf(buf," L %d %d", x[i], y[i]);
    svg += buf;
  }
  svg += "\"\n";
  perhapsSend(svg.text());
  return svg.text();
}

svg_points()

const char * rlSvgVdi::svg_points	(	int *	x,
		int *	y,
		int	count
	)

Definition at line 718 of file rlsvgvdi.cpp.

{
  char buf[80];
  svg = "points=\"";
  for(int i=0; i<count; i++)
  {
    sprintf(buf," %d,%d", x[i], y[i]);
    svg += buf;
  }
  svg += "\"\n";
  perhapsSend(svg.text());
  return svg.text();
}

svg_printf()

const char * rlSvgVdi::svg_printf	(	const char *	format,
			...
	)

Definition at line 690 of file rlsvgvdi.cpp.

{
  int ret;
  char message[rl_PRINTF_LENGTH]; // should be big enough
  va_list ap;
  va_start(ap,format);
  ret = rlvsnprintf(message, rl_PRINTF_LENGTH - 1, format, ap);
  va_end(ap);
  if(ret < 0) return "";
  return svg_put(message);
}

svg_put()

const char * rlSvgVdi::svg_put

(

const char *

text

)

Definition at line 684 of file rlsvgvdi.cpp.

{
  perhapsSend(text);
  return text;
}

svgHeader()

const char * rlSvgVdi::svgHeader	(	int	width = 1280,
		int	height = 1024,
		int	rbackground = 255,
		int	gbackground = 255,
		int	bbackground = 255
	)

Definition at line 257 of file rlsvgvdi.cpp.

{
  svg.printf("<svg width=\"%dpx\" height=\"%dpx\" viewBox=\"0 0 %d %d\" style=\"background: rgb(%d,%d,%d)\"\n", width, height, width, height, rbackground, gbackground, bbackground);
  svg += "  xmlns=\"http://www.w3.org/2000/svg\" version=\"1.2\" baseProfile=\"tiny\">\n";
  svg += "  <desc>svgvdi for smf files</desc>\n";
  perhapsSend(svg.text());
  return svg.text();
}

svgTrailer()

const char * rlSvgVdi::svgTrailer

(

)

Definition at line 266 of file rlsvgvdi.cpp.

{
  svg = "</svg>\n";
  perhapsSend(svg.text());
  return svg.text();
}

text()

const char * rlSvgVdi::text	(	int	x,
		int	y,
		const char *	text,
		int	alignment = ALIGN_LEFT
	)

Definition at line 330 of file rlsvgvdi.cpp.

{
  switch(alignment)
  {
    case ALIGN_LEFT:     //  |example
      svg.printf("<text x=\"%d\" y=\"%d\" %s>%s</text>\n", x, y, textoptions.text(), txt);
      break;
    case ALIGN_CENTER:   //  exa|mple
      svg.printf("<text x=\"%d\" y=\"%d\" text-anchor=\"middle\" %s>%s</text>\n", x, y, textoptions.text(), txt);
      break;
    case ALIGN_RIGHT:    //  example|
      svg.printf("<text x=\"%d\" y=\"%d\" text-anchor=\"end\" %s>%s</text>\n", x, y, textoptions.text(), txt);
      break;
    case ALIGN_VERT_CENTER:
      svg.printf("<g transform=\"translate(%d,%d)\" >\n  <g transform=\"rotate(-90)\" >\n    <text x=\"0\" y=\"0\" text-anchor=\"middle\" %s>%s</text>\n  </g>\n</g>\n", x, y, textoptions.text(), txt);
      break;
    default:
      svg.printf("<text x=\"%d\" y=\"%d\" %s>%s/text>\n", x, y, textoptions.text(), txt);
      break;
  }
  perhapsSend(svg.text());
  return svg.text();
}

textInAxis()

const char * rlSvgVdi::textInAxis	(	float	x,
		float	y,
		const char *	text,
		int	alignment
	)

Definition at line 311 of file rlsvgvdi.cpp.

{
  float dy;
/*
  ymax-ymin        dy
  -----------   =  ----------
  boxh             fontsize/2
*/
  if(alignment == ALIGN_CENTER)
  {
    dy = ((ymax-ymin) * (fontsize/2) ) / (boxh);
    return text(tx(x), ty(y+dy), txt, alignment);
  }
  else
  {
    return text(tx(x), ty(y), txt, alignment);
  }
}

tx()

int rlSvgVdi::tx ( float  x )

private

Definition at line 732 of file rlsvgvdi.cpp.

{
  return (int)(boxx + (((x-xmin)*boxw)/(xmax-xmin)));    // x          i
}                                                        // xmax-xmin  boxw

ty()

int rlSvgVdi::ty ( float  y )

private

Definition at line 737 of file rlsvgvdi.cpp.

{
  int i0;
  i0 = (int)((ymin * boxh)/(ymax-ymin));
  return i0 + (int)(boxy+boxh-((y*boxh)/(ymax-ymin))); // y          i        ymin       i0
}                                                      // ymax-ymin  boxh     ymax-ymin  boxh

xAxis()

const char * rlSvgVdi::xAxis	(	float	start,
		float	delta,
		float	end,
		int	draw = 1
	)

Definition at line 427 of file rlsvgvdi.cpp.

{
  float x;
  int   y;
  char  txt[80];

  svg2 = "";
  xmin = start;
  dx   = delta;
  xmax = end;
  if(draw==0) return "";

  x = start;
  y = boxy + boxh;

  while(x <= end)
  {
    svg2 += moveTo(tx(x),y);
    svg2 += lineTo(tx(x),y+8);
    sprintf(txt,floatFormat,x);
    beautyval(txt);
    svg2 += text(tx(x),y+((3*fontsize)/2),txt,ALIGN_CENTER);
    x += delta;
  }

  if(start < 0.0f && end > 0.0f)
  {
    svg2 += moveTo(tx(0.0f),boxy);
    svg2 += lineTo(tx(0.0f),boxy+boxh);
  }
  return svg2.text();
}

xGrid()

const char * rlSvgVdi::xGrid

(

)

Definition at line 405 of file rlsvgvdi.cpp.

{
  svg2 = "";
  for(float x=(xmin+dx); x<xmax; x+=dx)
  {
    svg2 += moveTo(tx(x),boxy);
    svg2 += lineTo(tx(x),boxy+boxh);
  }
  return svg2.text();
}

yAxis()

const char * rlSvgVdi::yAxis	(	float	start,
		float	delta,
		float	end,
		int	draw = 1
	)

Definition at line 460 of file rlsvgvdi.cpp.

{
float y;
int   x;
char  txt[80];

  svg2 = "";
  ymin = start;
  dy   = delta;
  ymax = end;
  if(draw==0) return "";
  x = boxx;
  y = start;

  while(y <= end)
  {
    svg2 += moveTo(x,ty(y));
    svg2 += lineTo(x-8,ty(y));
    sprintf(txt,floatFormat,y);
    beautyval(txt);
    svg2 += text(x-10,ty(y),txt,ALIGN_RIGHT);
    y += delta;
  }


  if(start < 0.0f && end > 0.0f)
  {
    svg2 += moveTo(boxx,ty(0.0f));
    svg2 += lineTo(boxx+boxw,ty(0.0f));
  }
  return svg2.text();
}

yGrid()

const char * rlSvgVdi::yGrid

(

)

Definition at line 416 of file rlsvgvdi.cpp.

{
  svg2 = "";
  for(float y=(ymin+dy); y<=(ymax-dy); y+=dy)
  {
    svg2 += moveTo(boxx,ty(y));
    svg2 += lineTo(boxx+boxw, ty(y));
  }
  return svg2.text();
}

Member Data Documentation

boxh

int rlSvgVdi::boxh

private

Definition at line 140 of file rlsvgvdi.h.

boxw

int rlSvgVdi::boxw

private

Definition at line 140 of file rlsvgvdi.h.

boxx

int rlSvgVdi::boxx

private

Definition at line 140 of file rlsvgvdi.h.

boxy

int rlSvgVdi::boxy

private

Definition at line 140 of file rlsvgvdi.h.

dasharray

rlString rlSvgVdi::dasharray

private

Definition at line 132 of file rlsvgvdi.h.

dx

float rlSvgVdi::dx

private

Definition at line 136 of file rlsvgvdi.h.

dy

float rlSvgVdi::dy

private

Definition at line 137 of file rlsvgvdi.h.

filename

rlString rlSvgVdi::filename

private

Definition at line 127 of file rlsvgvdi.h.

floatFormat

char rlSvgVdi::floatFormat[80]

private

Definition at line 143 of file rlsvgvdi.h.

fontsize

int rlSvgVdi::fontsize

private

Definition at line 141 of file rlsvgvdi.h.

fontstring

rlString rlSvgVdi::fontstring

private

Definition at line 129 of file rlsvgvdi.h.

fout

FILE* rlSvgVdi::fout

private

Definition at line 125 of file rlsvgvdi.h.

idForPvbrowser

int rlSvgVdi::idForPvbrowser

private

Definition at line 128 of file rlsvgvdi.h.

lineoptions

rlString rlSvgVdi::lineoptions

private

Definition at line 133 of file rlsvgvdi.h.

outputfilename

rlString rlSvgVdi::outputfilename

private

Definition at line 127 of file rlsvgvdi.h.

outputState

int rlSvgVdi::outputState

Definition at line 116 of file rlsvgvdi.h.

pipe

rlSpawn* rlSvgVdi::pipe

private

Definition at line 126 of file rlsvgvdi.h.

sout

int* rlSvgVdi::sout

private

Definition at line 124 of file rlsvgvdi.h.

sr

int rlSvgVdi::sr

private

Definition at line 142 of file rlsvgvdi.h.

stroke

char rlSvgVdi::stroke[16]

private

Definition at line 130 of file rlsvgvdi.h.

svg

rlString rlSvgVdi::svg

private

Definition at line 129 of file rlsvgvdi.h.

svg2

rlString rlSvgVdi::svg2

private

Definition at line 129 of file rlsvgvdi.h.

svg3

rlString rlSvgVdi::svg3

private

Definition at line 129 of file rlsvgvdi.h.

textoptions

rlString rlSvgVdi::textoptions

private

Definition at line 133 of file rlsvgvdi.h.

width

int rlSvgVdi::width

private

Definition at line 131 of file rlsvgvdi.h.

xmax

float rlSvgVdi::xmax

private

Definition at line 136 of file rlsvgvdi.h.

xmin

float rlSvgVdi::xmin

private

Definition at line 136 of file rlsvgvdi.h.

xold

int rlSvgVdi::xold

private

Definition at line 135 of file rlsvgvdi.h.

ymax

float rlSvgVdi::ymax

private

Definition at line 137 of file rlsvgvdi.h.

ymin

float rlSvgVdi::ymin

private

Definition at line 137 of file rlsvgvdi.h.

yold

int rlSvgVdi::yold

private

Definition at line 135 of file rlsvgvdi.h.

---

The documentation for this class was generated from the following files:

• rlsvgvdi.h
• rlsvgvdi.cpp