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libcw/cwSvg.cpp

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#include "cwCommon.h"
#include "cwLog.h"
#include "cwCommonImpl.h"
#include "cwMem.h"
#include "cwFile.h"
#include "cwSvg.h"
#include "cwText.h"
#include "cwNumericConvert.h"
namespace cw
{
namespace svg
{
enum
{
kLineTId,
kPLineTId,
kRectTId,
kTextTId,
kPixelTId
};
// Attribute record used for CSS and SVG element attributes
typedef struct attr_str
{
char* label;
char* value;
struct attr_str* link;
} attr_t;
// CSS selector record with attribute list
typedef struct css_str
{
char* selectorStr;
attr_t* attrL;
struct css_str* link;
} css_t;
// SVG element record
typedef struct ele_str
{
unsigned typeId; // kLineTId,kRectPId,...
attr_t* attrL; // element attributes (e.g. id, class)
css_t* css; // style attributes
double x0; // left,top
double y0;
double x1; // right,bot
double y1;
char* text;
double* xV; // poly line coords
double* yV;
unsigned yN;
struct ele_str* link;
} ele_t;
typedef struct color_map_str
{
unsigned id;
unsigned colorN;
unsigned* colorV;
struct color_map_str* link;
} color_map_t;
typedef struct svg_str
{
css_t* cssL; // CSS selector records
color_map_t* cmapL; // Color maps
ele_t* eleL; // SVG elements
double dx; // Offset new elements by this amount
double dy;
ele_t* curEle; // Last SVG element allocated
} svg_t;
inline svg_t* _handleToPtr(handle_t h )
{ return handleToPtr<handle_t,svg_t>(h); }
void _destroy_attr_list( attr_t* a )
{
while( a != nullptr )
{
attr_t* a0 = a->link;
mem::release(a->label);
mem::release(a->value);
mem::release(a);
a = a0;
}
}
void _destroy_css( css_t* r )
{
if( r != nullptr )
{
mem::release(r->selectorStr);
_destroy_attr_list(r->attrL);
mem::release(r);
}
}
rc_t _destroy( struct svg_str* p )
{
ele_t* e = p->eleL;
while( e != nullptr )
{
ele_t* e0 = e->link;
mem::release(e->text);
mem::release(e->xV);
mem::release(e->yV);
_destroy_attr_list(e->attrL);
_destroy_css(e->css);
mem::release(e);
e = e0;
}
color_map_t* c = p->cmapL;
while( c != nullptr )
{
color_map_t* c0 = c->link;
mem::release(c->colorV);
mem::release(c);
c = c0;
}
css_t* r = p->cssL;
while( r != nullptr )
{
css_t* r0 = r->link;
_destroy_css(r);
r = r0;
}
mem::release(p);
return kOkRC;
}
rc_t _install_cmap( svg_t* p, unsigned id, unsigned* cV, unsigned cN )
{
color_map_t* cmap = mem::allocZ<color_map_t>(1);
cmap->id = id;
cmap->colorN = cN;
cmap->colorV = cV;
cmap->link = p->cmapL;
p->cmapL = cmap;
return kOkRC;
}
color_map_t* _cmap_from_id( svg_t* p, unsigned id )
{
color_map_t* cm;
for(cm=p->cmapL; cm!=nullptr; cm=cm->link)
if( cm->id == id )
return cm;
cwLogWarning("Unknown color map id:%i.", id );
return nullptr;
}
rc_t _install_basic_eight_cmap( svg_t* p )
{
unsigned colorN = 8;
unsigned* colorV = mem::allocZ<unsigned>(colorN);
colorV[0] = 0x0000ff;
colorV[1] = 0x00ff00;
colorV[2] = 0xff0000;
colorV[3] = 0x00ffff;
colorV[4] = 0xffff00;
colorV[5] = 0xff00ff;
colorV[6] = 0x000000;
colorV[7] = 0xffffff;
return _install_cmap( p, kStandardColorMapId, colorV, colorN );
}
rc_t _install_gray_scale_cmap( svg_t* p )
{
unsigned colorN = 256;
unsigned* colorV = mem::allocZ<unsigned>(colorN);
for(unsigned i=0; i<colorN; ++i)
colorV[i] = (i<<16) + (i<<8) + i;
return _install_cmap( p, kGrayScaleColorMapId, colorV, colorN );
}
rc_t _install_inv_gray_scale_cmap( svg_t* p )
{
color_map_t* cm = _cmap_from_id(p, kGrayScaleColorMapId );
unsigned* colorV = mem::alloc<unsigned>(cm->colorN);
for(unsigned i=0; i<cm->colorN; ++i)
colorV[i] = 0xffffff - cm->colorV[i];
return _install_cmap( p, kInvGrayScaleColorMapId, colorV, cm->colorN );
}
rc_t _install_heat_cmap( svg_t* p )
{
unsigned colorN = 256;
unsigned* colorV = mem::allocZ<unsigned>(colorN);
double rV[] = { 0.0, 0.0, 1.0, 1.0 };
double gV[] = { 1.0, 0.0, 0.0, 1.0 };
double bV[] = { 1.0, 1.0, 0.0, 0.0 };
const unsigned xN = cwCountOf(rV);
for(unsigned i=1,k=0; i<xN; ++i)
{
unsigned c = colorN/xN; //64
for(unsigned j=0; j<c && k<colorN; ++j,++k)
{
unsigned r = 255* (rV[i-1] + (j * rV[i]-rV[i-1])/c);
unsigned g = 255* (gV[i-1] + (j * gV[i]-gV[i-1])/c);
unsigned b = 255* (bV[i-1] + (j * bV[i]-bV[i-1])/c);
colorV[k] = (r<<16) + (g<<8) + b;
}
}
return _install_cmap( p, kHeatColorMapId, colorV, colorN );
}
rc_t _insert( svg_t* p, unsigned typeId, double x, double y, double w, double h, const char* text, const double* yV=nullptr, unsigned yN=0, const double* xV=nullptr )
{
rc_t rc = kOkRC;
ele_t* e = mem::allocZ<ele_t>(1);
e->typeId = typeId;
e->x0 = x;
e->y0 = y;
e->x1 = x+w;
e->y1 = y+h;
e->text = mem::duplStr(text);
e->yV = yN>0 && yV!=nullptr ? mem::allocDupl<double>(yV,yN) : nullptr;
e->xV = yN>0 && xV!=nullptr ? mem::allocDupl<double>(xV,yN) : nullptr;
e->yN = yN;
if( yN == 0 )
{
e->x0 += p->dx;
e->y0 += p->dy;
e->x1 += p->dx;
e->y1 += p->dy;
}
else
{
if( e->xV == nullptr )
{
e->xV = mem::alloc<double>(e->yN);
for(unsigned i=0; i<e->yN; ++i)
e->xV[i] = i;
}
for(unsigned i=0; i<yN; ++i)
{
e->yV[i] += p->dy;
e->xV[i] += p->dx;
}
}
ele_t* e0 = nullptr;
ele_t* e1 = p->eleL;
while( e1!=nullptr)
{
e0 = e1;
e1 = e1->link;
}
if( e0 == NULL )
p->eleL = e;
else
e0->link = e;
p->curEle = e;
return rc;
}
void _offsetEles(svg_t* p, double dx, double dy )
{
for(ele_t* e=p->eleL; e!=nullptr; e=e->link)
{
if( e->yN == 0 )
{
e->x0 += dx;
e->x1 += dx;
e->y0 += dy;
e->y1 += dy;
}
else
{
for(unsigned i=0; i<e->yN; ++i)
{
e->yV[i] += dy;
e->xV[i] += dx;
}
}
}
}
void _ele_extents( ele_t* e, double& min_x, double& min_y, double& max_x, double& max_y )
{
if( e->yN==0 )
{
min_x = std::min(e->x0,e->x1);
max_x = std::max(e->x0,e->x1);
min_y = std::min(e->y0,e->y1);
max_y = std::max(e->y0,e->y1);
}
else
{
min_y = e->yV[0];
max_y = e->yV[0];
min_x = e->xV[0];
max_x = e->xV[0];
for(unsigned i=0; i<e->yN; ++i)
{
min_x = std::min( min_x, e->yV[i] );
max_x = std::max( max_x, e->yV[i] );
min_y = std::min( min_y, e->xV[i] );
max_y = std::max( max_y, e->xV[i] );
}
}
}
void _extents( svg_t* p, double& min_x, double& min_y, double& max_x, double& max_y )
{
if( p->eleL == NULL )
return;
ele_t* e = p->eleL;
_ele_extents(e,min_x,min_y,max_x,max_y);
for(e=e->link; e!=NULL; e=e->link)
{
double e_min_x,e_min_y,e_max_x,e_max_y;
_ele_extents(e,e_min_x,e_min_y,e_max_x,e_max_y);
min_x = std::min(min_x,e_min_x);
max_x = std::max(max_x,e_max_x);
min_y = std::min(min_y,e_min_y);
max_y = std::max(max_y,e_max_y);
}
}
double _size( svg_t* p, double& widthRef, double& heightRef )
{
double min_x,min_y,max_x,max_y;
widthRef = 0;
heightRef = 0;
_extents( p, min_x, min_y, max_x, max_y );
widthRef = max_x - min_x;
heightRef = max_y - min_y;
return max_y;
}
void _flipY( svg_t* p, unsigned height )
{
ele_t* e = p->eleL;
for(; e!=NULL; e=e->link)
{
if( e->yN == 0 )
{
e->y0 = (-e->y0) + height;
e->y1 = (-e->y1) + height;
if( e->typeId == kRectTId )
{
double t = e->y1;
e->y1 = e->y0;
e->y0 = t;
}
}
else
{
for(unsigned i=0; i<e->yN; ++i)
e->yV[i] = (-e->yV[i]) + height;
}
}
}
// Write a HTML element attribute list
char* _print_ele_attr_list( const attr_t* attrL, char*& s )
{
for(const attr_t* a=attrL; a!=nullptr; a=a->link)
s = mem::printp(s,"%s=\"%s\" ",a->label,a->value);
return s;
}
// Write a CSS record attribute list
char* _print_css_attr_list( const attr_t* attrL, char*& s )
{
for(const attr_t* a=attrL; a!=nullptr; a=a->link)
s = mem::printp(s,"%s: %s;",a->label,a->value);
return s;
}
// Print a CSS record
char* _print_css( const css_t* r, char*& s )
{
char* s0 = nullptr;
s0 = _print_css_attr_list( r->attrL, s0 );
s = mem::printp(s,"%s { %s }\n", r->selectorStr, s0 );
mem::release(s0);
return s;
}
char* _print_css_list( svg_t* p, char*& s )
{
for( const css_t* r=p->cssL; r!=nullptr; r=r->link)
s = _print_css(r,s);
return s;
}
rc_t _writeCssFile( svg_t* p, const char* fn )
{
rc_t rc;
file::handle_t fH;
char* s;
if( p->cssL == nullptr )
return kOkRC;
if((rc = file::open(fH,fn,file::kWriteFl)) != kOkRC )
return cwLogError(rc,"CSS file create failed on '%s'.",cwStringNullGuard(fn));
s = _print_css_list(p,s);
file::printf(fH,"%s\n",s);
mem::release(s);
file::close(fH);
return rc;
}
css_t* _cssSelectorToRecd( svg_t* p, const char* selectorStr )
{
css_t* r = p->cssL;
for(; r!=nullptr; r=r->link)
if( strcmp(selectorStr,r->selectorStr)==0 )
return r;
return nullptr;
}
css_t* _cssCreate( svg_t* p )
{
return mem::allocZ<css_t>();
}
css_t* _cssFindOrCreate( svg_t* p, const char* selectorStr )
{
css_t* r;
if((r = _cssSelectorToRecd(p,selectorStr)) == nullptr )
{
r = _cssCreate(p);
r->selectorStr = mem::duplStr(selectorStr);
r->link = p->cssL;
p->cssL = r;
}
return r;
}
char* _cssGenUniqueIdLabel( svg_t* p )
{
unsigned i = 0;
const unsigned bufN = 64;
char buf[ bufN + 1];
do
{
snprintf(buf,bufN,"#id_%i",i);
if( _cssSelectorToRecd(p,buf) == nullptr )
return mem::duplStr(buf);
i += 1;
}while(1);
return nullptr;
}
template< typename T >
rc_t _set_attr_int( handle_t h, const char* selectorStr, const char* attrLabel, const T& value, const char* suffix )
{
const int bufN = 64;
char buf[ bufN + 1 ];
if( suffix == nullptr )
suffix = "";
else
{
if( strcmp(suffix,"rgb") == 0 )
{
snprintf(buf,bufN,"#%06x",value);
}
else
{
snprintf(buf,bufN,"%i%s",value,suffix);
}
}
return _set_attr( h, selectorStr, attrLabel, buf, nullptr );
}
rc_t _write_pline(file::handle_t fH, ele_t* e, const char* styleStr)
{
rc_t rc = kOkRC;
if( e->yN == 0 )
return rc;
file::printf(fH,"<polyline points=\"");
for(unsigned i=0; i<e->yN; ++i)
if((rc = file::printf(fH,"%f,%f ", e->xV[i], e->yV[i] )) != kOkRC)
return rc;
return file::printf(fH,"\" %s />\n", styleStr);
}
}
}
cw::rc_t cw::svg::create( handle_t& h )
{
rc_t rc;
if((rc = destroy(h)) != kOkRC )
return rc;
svg_t* p = mem::allocZ<svg_t>();
_install_basic_eight_cmap(p);
_install_gray_scale_cmap(p);
_install_inv_gray_scale_cmap(p);
_install_heat_cmap(p);
h.set(p);
return rc;
}
cw::rc_t cw::svg::destroy( handle_t& h )
{
rc_t rc = kOkRC;
if( !h.isValid())
return rc;
svg_t* p = _handleToPtr(h);
if((rc = _destroy(p)) != kOkRC )
return rc;
h.clear();
return rc;
}
cw::rc_t cw::svg::install_color_map( handle_t h, const unsigned* colorV, unsigned colorN, unsigned id )
{ return _install_cmap( _handleToPtr(h), id, mem::allocDupl<unsigned>(colorV,colorN), colorN ); }
void cw::svg::offset( handle_t h, double dx, double dy )
{
svg_t* p = _handleToPtr(h);
p->dx = dx;
p->dy = dy;
}
unsigned cw::svg::color( handle_t h, unsigned colorMapId, double colorMin, double colorMax, double colorValue )
{
color_map_t* cm;
svg_t* p = _handleToPtr(h);
if((cm = _cmap_from_id(p, colorMapId )) == nullptr )
{
cwLogWarning("Unknown color map id:%i.", colorMapId );
return 0;
}
double c = std::min( colorMax, std::max( colorMin, colorValue ) );
unsigned idx = (cm->colorN-1) * (c - colorMin)/(colorMax - colorMin);
assert(idx<cm->colorN);
return cm->colorV[idx];
}
unsigned cw::svg::color( handle_t h, unsigned colorMapId, unsigned colorIdx )
{
color_map_t* cm;
svg_t* p = _handleToPtr(h);
if((cm = _cmap_from_id(p, colorMapId )) == nullptr )
return 0;
colorIdx = colorIdx % cm->colorN;
return cm->colorV[colorIdx];
}
cw::rc_t cw::svg::_set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const char* value, const char* suffix )
{
svg_t* p = _handleToPtr(h);
css_t* r = nullptr;
int bufN = 64;
char buf[ bufN + 1 ];
if( suffix != nullptr )
{
snprintf(buf,bufN,"%s%s",value,suffix);
value = buf;
}
// allocate and fill the CSS attribute record
attr_t* a = mem::allocZ<attr_t>();
a->label = mem::duplStr(attrLabel);
a->value = mem::duplStr(value);
// if a selector is given then find or create a CSS selector record
if( selectorStr != nullptr )
r = _cssFindOrCreate(p,selectorStr);
else
{
// 'id' and 'class' attributes are always added to the ele attribute list ...
if( strcmp(attrLabel,"id")!=0 && strcmp(attrLabel,"class")!=0 )
{
// ... otherwise the attributes are added to the ele style list
if( p->curEle->css == nullptr )
p->curEle->css = _cssCreate(p);
r = p->curEle->css;
}
}
if( r != nullptr )
{
a->link = r->attrL;
r->attrL = a;
}
else
{
a->link = p->curEle->attrL;
p->curEle->attrL = a;
}
return kOkRC;
}
cw::rc_t cw::svg::_set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const unsigned& value, const char* suffix )
{
return _set_attr_int(h,selectorStr,attrLabel,value,suffix);
}
cw::rc_t cw::svg::_set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const int& value, const char* suffix )
{
return _set_attr_int(h,selectorStr,attrLabel,value,suffix);
}
cw::rc_t cw::svg::_set_attr( handle_t h, const char* selectorStr, const char* attrLabel, const double& value, const char* suffix )
{
const int bufN = 32;
char buf[ bufN+1 ];
number_to_string(value,buf,bufN);
return _set_attr(h,selectorStr,attrLabel,buf,suffix);
}
cw::rc_t cw::svg::_rect( handle_t h, double x, double y, double ww, double hh )
{
svg_t* p = _handleToPtr(h);
return _insert( p, kRectTId, x, y, ww, hh, nullptr);
}
cw::rc_t cw::svg::_line( handle_t h, double x0, double y0, double x1, double y1 )
{
svg_t* p = _handleToPtr(h);
return _insert( p, kLineTId, x0, y0, x1-x0, y1-y0, nullptr);
}
cw::rc_t cw::svg::_pline( handle_t h, const double* yV, unsigned n, const double* xV )
{
svg_t* p = _handleToPtr(h);
return _insert( p, kPLineTId, 0,0,0,0, nullptr, yV, n, xV);
}
cw::rc_t cw::svg::_text( handle_t h, double x, double y, const char* text )
{
svg_t* p = _handleToPtr(h);
return _insert( p, kTextTId, x, y, 0, 0, text);
}
cw::rc_t cw::svg::image( handle_t h, const float* xM, unsigned rowN, unsigned colN, unsigned pixSize, unsigned cmapId )
{
svg_t* p = _handleToPtr(h);
char* idLabel = _cssGenUniqueIdLabel(p);
_parse_attr( h, idLabel,
"width", pixSize, "px",
"height", pixSize, "px",
"stroke-width", 1, "px",
"stroke-opacity", 1.0, nullptr,
"fill-opacity", 1.0, nullptr );
for(unsigned i=0; i<rowN; ++i)
for(unsigned j=0; j<colN; ++j)
{
int c = color( h, cmapId, 0, 1, xM[j*colN + i + 1] );
_insert(p, kPixelTId, i*pixSize, j*pixSize, pixSize, pixSize, nullptr );
_set_attr( h, nullptr, "stroke", c, "rgb" );
_set_attr( h, nullptr, "fill", c, "rgb" );
_set_attr( h, nullptr, "id", idLabel+1, nullptr );
}
mem::release(idLabel);
return kOkRC;
}
cw::rc_t cw::svg::write( handle_t h, const char* outFn, const char* cssFn, unsigned flags, double bordL, double bordT, double bordR, double bordB)
{
rc_t rc = kOkRC;
svg_t* p = _handleToPtr(h);
double svgWidth = 0;
double svgHeight = 0;
char* cssStr = nullptr;
char* styleStr = nullptr;
char* fileHdr = nullptr;
char* svgHdr = nullptr;
ele_t* e = p->eleL;
bool standAloneFl = cwIsFlag(flags,kStandAloneFl);
bool panZoomFl = cwIsFlag(flags,kPanZoomFl);
bool genCssFileFl = cwIsFlag(flags,kGenCssFileFl) && cssFn!=nullptr;
file::handle_t fH;
char panZoomHdr[] =
"<script type=\"text/javascript\" src=\"svg-pan-zoom/dist/svg-pan-zoom.js\"></script>\n"
"<script>\n"
" var panZoom = null;\n"
" function doOnLoad() { panZoom = svgPanZoom(document.querySelector('#mysvg'), { controlIconsEnabled:true } ) }\n"
"</script>\n";
char standAloneFmt[] =
"<!DOCTYPE html>\n"
"<html>\n"
"<head>\n"
"<meta charset=\"utf-8\">\n"
"%s"
"<style>%s</style>\n"
"%s\n"
"</head>\n"
"<body onload=\"doOnLoad()\">\n";
char svgFmt[] = "<svg id=\"mysvg\" width=\"%f\" height=\"%f\">\n";
char cssFmt[] = "<link rel=\"stylesheet\" type=\"text/css\" href=\"%s\">\n";
//double max_y = _size(p, svgWidth, svgHeight );
//_flipY( p, max_y );
_size(p,svgWidth,svgHeight);
_offsetEles(p, bordR, bordT );
svgWidth += bordR + bordL;
svgHeight += bordT + bordB;
if( p->cssL != nullptr )
{
if( genCssFileFl )
_writeCssFile( p, cssFn );
else
styleStr = _print_css_list(p,styleStr);
}
cssStr = mem::printf(cssStr,cssFn==nullptr ? "%s" : cssFmt, cssFn==nullptr ? " " : cssFn);
fileHdr = mem::printf(fileHdr,standAloneFmt, cssStr, styleStr==nullptr ? "" : styleStr, panZoomFl ? panZoomHdr : "");
svgHdr = mem::printf(svgHdr,"%s%s", standAloneFl ? fileHdr : "", svgFmt);
fileHdr = mem::printf(fileHdr,svgHdr,svgWidth,svgHeight);
mem::release(svgHdr);
mem::release(cssStr);
mem::release(styleStr);
if((rc = file::open(fH,outFn,file::kWriteFl)) != kOkRC )
{
rc = cwLogError(rc,"SVG file create failed for '%s'.",cwStringNullGuard(outFn));
goto errLabel;
}
if((rc = file::printf(fH,"%s",fileHdr)) != kOkRC )
goto errLabel;
for(; e!=NULL; e=e->link)
{
char* dStyleStr = nullptr;
if( e->css != nullptr )
dStyleStr = mem::printf(dStyleStr, "style=\"%s\" ",_print_css_attr_list(e->css->attrL,dStyleStr));
if( e->attrL != nullptr )
dStyleStr = mem::printp(dStyleStr,"%s",_print_ele_attr_list(e->attrL,dStyleStr) );
const char* styleStr = dStyleStr==nullptr ? "" : dStyleStr;
switch( e->typeId )
{
case kRectTId:
rc = file::printf(fH,"<rect x=\"%f\" y=\"%f\" width=\"%f\" height=\"%f\" %s/>\n",e->x0,e->y0,e->x1-e->x0,e->y1-e->y0,styleStr);
break;
case kPixelTId:
rc = file::printf(fH,"<rect x=\"%f\" y=\"%f\" %s/>\n",e->x0,e->y0,e->x1-e->x0,e->y1-e->y0,styleStr);
break;
case kLineTId:
rc = file::printf(fH,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" %s/>\n",e->x0,e->y0,e->x1,e->y1,styleStr);
break;
case kPLineTId:
rc = _write_pline(fH,e,styleStr);
break;
case kTextTId:
rc = file::printf(fH,"<text x=\"%f\" y=\"%f\" %s>%s</text>\n",e->x0,e->y0, styleStr,e->text);
break;
}
mem::release(dStyleStr);
if( rc != kOkRC )
goto errLabel;
}
if( (rc = file::printf(fH,"</svg>\n")) != kOkRC )
{
rc = cwLogError(kMemAllocFailRC,"File suffix write failed.");
goto errLabel;
}
if( standAloneFl )
rc = file::printf(fH,"</body>\n</html>\n");
errLabel:
if( rc != kOkRC )
rc = cwLogError(rc,"SVG file write failed.");
file::close(fH);
mem::release(fileHdr);
return rc;
}
cw::rc_t cw::svg::test( const char* outFn, const char* cssFn )
{
rc_t rc = kOkRC;
handle_t h;
if((rc = create(h)) != kOkRC )
cwLogError(rc,"SVG Test failed on create.");
double yV[] = { 0, 10, 30, 60, 90 };
double xV[] = { 0, 40, 60, 40, 10 };
unsigned yN = cwCountOf(yV);
install_css(h,"#my_rect","fill-opacity",0.25,nullptr);
rect(h, 0, 0, 100, 100, "fill", 0x7f7f7f, "rgb", "id", "my_rect", nullptr );
line(h, 0, 0, 100, 100, "stroke", 0xff0000, "rgb" );
line(h, 0,100, 100, 0, "stroke", 0x00ff00, "rgb", "stroke-width", 3, "px", "stroke-opacity", 0.5, nullptr );
pline(h, yV, yN, xV, "stroke", 0x0, "rgb", "fill-opacity", 0.25, nullptr );
text(h, 10, 10, "foo" );
float imgM[] = {
0.0f, 0.5f, 1.0f,
0.5f, 0.0f, 0.5f,
1.0f, 1.0f, 0.0f,
0.5f, 0.0f, 1.0f };
offset( h, 10, 200 );
image(h, imgM, 4, 3, 20, kInvGrayScaleColorMapId );
write(h,outFn, cssFn, kStandAloneFl, 10,10,10,10);
if((rc = destroy(h)) != kOkRC )
cwLogError(rc,"SVG destroy failed.");
return rc;
}
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